CN105045886A - Importing method of DICOM (Digital Imaging and Communications in Medicine) image - Google Patents

Importing method of DICOM (Digital Imaging and Communications in Medicine) image Download PDF

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CN105045886A
CN105045886A CN201510438917.4A CN201510438917A CN105045886A CN 105045886 A CN105045886 A CN 105045886A CN 201510438917 A CN201510438917 A CN 201510438917A CN 105045886 A CN105045886 A CN 105045886A
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dicom image
image file
dicom
axis
file
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CN105045886B (en
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陈宗喜
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Qingdao Hisense Medical Equipment Co Ltd
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Qingdao Hisense Medical Equipment Co Ltd
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    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G06F16/583—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using metadata automatically derived from the content
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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Abstract

The invention provides an importing method of a DICOM (Digital Imaging and Communications in Medicine) image to solve the problem in the prior art that required image data can not be quickly found during the three-dimensional reconstruction of a medical image. The method comprises the following steps: obtaining one group of DICOM image files, wherein each DICOM image file in one group of DICOM image files comprises a patient identifier, image position information, acquisition time and a serial number corresponding to the DICOM image file; according to the patient identifier, the image position information, the acquisition time and the serial number, classifying one group of DICOM image files, obtaining multiple groups of DICOM image files of the same patient, the same thickness, the same tangent plane and the same stage, wherein the multiple groups of DICOM image files are sequentially arranged according to an axial position direction; according to the patient types, the section thicknesses, the tangent plane types and the stage types of the multiple groups of DICOM image files, generating a nesting folder; and according to a root directory path of the nesting folder, independently importing the multiple groups of DICOM image files into the nesting folder. The importing method is suitable for the field of the three-dimensional reconstruction of images.

Description

A kind of introduction method of DICOM image
Technical field
The present invention relates to 3-dimensional reconstruction field, (DigitalImagingandCommunicationsinMedicine is called for short: the DICOM) introduction method of image to particularly relate to a kind of digital imaging and communications in medicine.
Background technology
Reconstruction of medical images is the technology one group of two dimension DICOM image sequence being converted to 3-D view.
Three-dimensional reconstruction Software General Requirements one group of DICOM image be same patient, same thickness, same tangent plane, by stages same and by direction, axle position order arrangement.Such as, as shown in Figure 1, when reconstruction of medical images, may need patient 1, slice thickness is 0.6, shaft-like face, and is one group of DICOM image of arterial phase, and this group DICOM image presses the order arrangement of direction, axle position.But, owing to there is no unified importing standard in current dicom standard, from CR scanning (ComputedTomography, be called for short: CT) equipment and medical image information system (PictureArchivingandCommunicationSystems, be called for short: DICOM image PACS) obtained may be unordered in a jumble, may need to travel through in the data of magnanimity to find the satisfactory DICOM image of this group, waste time and energy, be unfavorable for taking of data, manage also more chaotic.Although same patient, same thickness, same tangent plane, same DICOM image by stages has identical series number, can compare traversal and find, can not learn the characteristic such as its slice thickness and tangent plane type according to series number according to series number.
Therefore, seek a kind of introduction method of DICOM image, making it possible to the fast finding when reconstruction of medical images, to required view data, is the technical matters needing solution at present badly.
Summary of the invention
Embodiments of the invention provide a kind of introduction method of DICOM image, with at least solve prior art when reconstruction of medical images cannot fast finding to the problem of required view data.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provide a kind of introduction method of digital imaging and communications in medicine DICOM image, described method comprises:
Obtain one group of DICOM image file, wherein, in each DICOM image file in described one group of DICOM image file, comprise patient identifier corresponding to this DICOM image file, image location information, acquisition time and series number;
According to described patient identifier, image location information, acquisition time and series number, described one group of DICOM image file is classified, obtain same patient, same thickness, same tangent plane, by stages same and by the tactic many group DICOM image files in direction, axle position;
According to patient's type of described many group DICOM image files, slice thickness, tangent plane type and type by stages, generate nested file, described nested file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and type root directory by stages;
According to the root directory path of described nested file, described many group DICOM image files are imported in described nested file respectively.
The introduction method of the DICOM image that the embodiment of the present invention provides can according to described patient identifier, image location information, acquisition time and series number are classified to described one group of DICOM image file, obtain same patient, same thickness, same tangent plane, by stages same and press the tactic many group DICOM image files in direction, axle position, that is the DICOM image file needed for reconstruction of medical images is obtained, and can according to patient's type of described many group DICOM image files, slice thickness, tangent plane type and by stages type, generate corresponding nested file, simultaneously can according to the root directory path of described nested file, described many group DICOM image files are imported in described nested file respectively, wherein, described reconstruction of medical images file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and by stages type root directory.Therefore, based on the introduction method of the DICOM image that the embodiment of the present invention provides, when reconstruction of medical images, directly search this nested file and get final product fast finding to required view data.
Accompanying drawing explanation
DICOM Images Classification folder hierarchy schematic diagram when Fig. 1 is prior art traditional Chinese medicine 3-dimensional reconstruction;
The introduction method schematic flow sheet one of the DICOM image that Fig. 2 provides for the embodiment of the present invention;
The introduction method schematic flow sheet two of the DICOM image that Fig. 3 provides for the embodiment of the present invention;
The imager coordinate axle that Fig. 4 provides for the embodiment of the present invention;
The gatherer structural representation of the DICOM image that Fig. 5 provides for the embodiment of the present invention.
Embodiment
In order to being described clearly of following each embodiment is succinct, first provide briefly introducing of background context as follows:
DICOM is the international standard of medical image and relevant information, it defines the Medical Image Format that can be used for exchanges data that quality can meet clinical needs.
DICOM content of image files is made up of three parts, comprising: the file header (Header) of parameter information, figure point data (PixelData) and information entity (InformationEntity).
Wherein, each DICOM image file must comprise file header.Starting most of this file header is file foreword, and it is made up of 128 byte 00H, is next DICOM prefix, according to this value, the character string " DICM " of its to be a length be 4 byte, can judge that a file is DICOM image file.Also comprise some other useful information in file header, as file transformat, generate the application program etc. of this file.
Figure point data, i.e. image pixel, for the brightness value of each point of Description Image.
DICOM image file is made up of multiple information entity, and information entity is subdivided into again module (Module).Minimum unit inside each module is called an attribute (Attribute) or data element (Element).In DICOM image file, the position of each data element leaves fixing position in, as long as therefore know the first address that this image file is deposited in internal memory, just can find corresponding data element according to the side-play amount of deposit position.And label (TAG) value in DICOM image file also data element one by one just, that is, the corresponding data element of each TAG value.Such as TAG is that (so its value is exactly the name of an actual patient to patient name, such as Zhang San.
Usually, DICOM image file comprises 4 content levels: patient, inspection, series and image.Although in a lot of DICOM image file, some is identical to the content of this 4 level, they have in each DICOM image file, and two CT images of such as same patient, at least patient information is identical.
Patient goes to hospital to check, scanning result is saved as the picture meeting dicom standard form by CT equipment, and uploads to the server of PACS system by network, and doctor carries out diagosis by the server of Image Terminal access PACS system.Dicom standard defines the composition form of single width DICOM image file, and CT equipment and PACS system all will follow this standard design.But dicom standard does not specify name and the array format of one group of DICOM image file (compared with single image above, multiple image in other words), and therefore each producer can customize name and the array format of one group of DICOM image file.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For the ease of the technical scheme of the clear description embodiment of the present invention, in an embodiment of the present invention, have employed the printed words such as " first ", " second " to distinguish the substantially identical identical entry of function and efficacy or similar item, it will be appreciated by those skilled in the art that the printed words such as " first ", " second " do not limit quantity and execution order.
Embodiment one,
The embodiment of the present invention provides a kind of introduction method of DICOM image, as shown in Figure 2, comprising:
S201, obtain one group of DICOM image file, wherein, in each DICOM image file in described one group of DICOM image file, comprise patient identifier corresponding to this DICOM image file, image location information, acquisition time and series number.
S202, according to described patient identifier, image location information, acquisition time and series number, described one group of DICOM image file to be classified, obtain same patient, same thickness, same tangent plane, by stages same and by the tactic many group DICOM image files in direction, axle position.
S203, patient's type according to described many group DICOM image files, slice thickness, tangent plane type and type by stages, generate nested file, described nested file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and type root directory by stages.
S204, root directory path according to described nested file, import in described nested file respectively by described many group DICOM image files.
Concrete, in embodiment of the present invention step S201:
Before patient identifier normally carries out CT scan, by the artificial information inputted to equipment; Image location information, acquisition time and series number be the information that automatically generates of equipment normally.
Wherein, patient identifier is specifically as follows the information such as patient name or patient number; Image location information is specifically as follows the information such as image position coordinates or image orientation, and the embodiment of the present invention does not do concrete restriction to this.
Image position coordinates represents the volume coordinate (x, y, z) of first pixel in the image upper left corner, namely the coordinate of first pixel of DICOM image file transfers.
Image orientation is made up of six data, first three numeral represents row vector (row increases progressively direction) and x, y, z axle clamp cosine of an angle value respectively, and rear three numerals represent column vector (row increase progressively direction) and x, y, z axle clamp cosine of an angle value respectively.Because CT image is perpendicular to a certain axle scan image, therefore six data of image orientation are all 0 or 1.
Concrete, in embodiment of the present invention step S202:
As described in the background art, one group of DICOM image file needed for reconstruction of medical images, namely same patient, same thickness, same tangent plane, by stages same and press the tactic one group of DICOM image file in direction, axle position.As shown in Figure 3, step S202 specifically can comprise:
S202a, classified by described one group of DICOM image file according to described patient identifier, obtain m the first set, m is positive integer.
S202b, for each first set in described m first set, according to described series number, the DICOM image file in described each first set is classified, obtain l respectively sindividual second set.
Wherein, l srepresent the DICOM set of image files number obtained after the DICOM image file in s set in described m the first set is classified, 1≤s≤m.
S202c, for described l seach second set in individual second set, according to described image location information, determine tangent plane type corresponding to DICOM image file and slice thickness in described each second set, tangent plane type comprises shaft-like face, coronal-plane or sagittal plane.
S202d, according to described slice thickness and described tangent plane type to described l sindividual second set hierarchical classification, obtain f the 3rd set, f is positive integer.
S202e, for each 3rd set in described f the 3rd set, according to described acquisition time, determine the type by stages that each second set in described each 3rd set is corresponding, described type by stages comprises arterial phase, venous phase or balance period.
Wherein, in embodiment of the present invention step S202a:
The DICOM image file comprising same patient identifier is classified as same first set.In this step, there is the patient identifier that m different, therefore obtain m the first set.
In embodiment of the present invention step S202b:
Due to same patient, same thickness, same tangent plane, same DICOM image by stages has identical series number, therefore when carrying out DICOM Images Classification, after being classified by one group of DICOM image file according to patient identifier, can first classify according to series number, the DICOM image file being about to comprise same series number is classified as same second set, same patient can be obtained like this, same thickness, same tangent plane, same one group of DICOM image by stages.In this step, for s set in m the first set, there is l sindividual different series number, therefore obtains l sindividual second set.
In embodiment of the present invention step S202c:
Popular, sagittal plane is exactly that human body is in when to lie, along human body both sides from left to right direction (can certainly be from right to left), and the face that human body is cut from level to level, also namely sagittal plane is multiple vertical with X-axis, and direction, sagittal axle position is X-direction.Coronal-plane is exactly that human body is in when to lie, and by the face that human body cuts from level to level along level from upper surface to lower surface, also namely coronal-plane is multiple vertical with Y-axis, and the direction, axle position of coronal-plane is Y direction.Shaft-like face (also can be referred to as xsect) is exactly that human body is when to lie, along direction (can certainly be from pin to the end) so from top to bottom, the vertical face that human body is cut from level to level, also namely shaft-like face is multiple vertical with Z axis, and the direction, axle position in shaft-like face is Z-direction.
Wherein, as shown in Figure 4, DICOM coordinate system determines according to the direction of patient, and X-axis forward points to the left side of patient, and Y-axis forward points to the back of patient, and Z axis forward points to the head of patient.Direction, axle position, when specifically referring to along a certain coordinate axis scanning patient, the direction of coordinate axis indication.Such as, along Z-direction scanning patient, then direction, axle position is Z-direction.
It should be noted that, when carrying out CT scan, the sectioning image generated is perpendicular to direction, axle position, sequencing is had along direction, axle position, namely generate according to direction, axle position order, but because file designation mode is different, the order of reading in internal memory is that by file name default sort, (this is because the sortord of WINDOWS system in internal memory is sorted according to character string by filename to Windows, even if machine carries out value number according to scanning sequencing to file, but be do not note numerical values recited when carrying out character string sorting), not necessarily arrange according to direction, axle position, therefore the final DICOM image file obtained not necessarily time press axle position direction sequencing.
Wherein, in a kind of possible implementation, described image location information comprises image position coordinates.
Described according to described image location information, determine the tangent plane type that in described each second set, DICOM image file is corresponding, specifically can comprise:
The image position coordinates of DICOM image file in described each second set is decomposed into X-axis, Y-axis and Z axis data.
According to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set.
If direction, described axle position is Z-direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is shaft-like face.
If direction, described axle position is Y direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is coronal-plane.
If direction, described axle position is X-direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is sagittal plane.
In another kind of possible implementation, described image location information comprises image orientation.
Described according to described image location information, determine the tangent plane type that in described each second set, DICOM image file is corresponding, comprising:
If the row vector in described image orientation and the cosine value of column vector to Z axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is shaft-like face.
If the row vector in described image orientation and the cosine value of column vector to Y-axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is coronal-plane.
If the row vector in described image orientation and the cosine value of column vector to X-axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is sagittal plane.
In addition, slice thickness refers to the coordinate interval of tactic adjacent two the CT images according to CT scan, is generally 0.6mm, 1.0mm, 5.0mm.When described image location information comprises image position coordinates, described according to described image location information, determine the slice thickness that in described each second set, DICOM image file is corresponding, specifically can comprise:
DICOM image file in described each second set is sorted according to the order of CT scan, obtains the second set after sequence.
According to described image position coordinates, the distance of the picture position of adjacent two DICOM images in the second set after described sequence is defined as the slice thickness that in described each second set, DICOM image file is corresponding.
It should be noted that, due to second set in be one group of DICOM image file with same slice thickness, therefore only need obtain the distance of the picture position of arbitrary neighborhood two DICOM images here, just can learn the slice thickness that in the second set, DICOM image file is corresponding.
Further, in a kind of possible implementation, described by described each second set in DICOM image file sort according to the order of CT scan, specifically can comprise:
The image position coordinates of each DICOM image file in described each second set is decomposed into X-axis, Y-axis and Z axis data.
According to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set.
According to the size of each DICOM image file number of axle certificate on direction, described axle position in described each second set, the DICOM image file in described each second set is sorted according to the order of CT scan.
Optionally, in a kind of possible implementation, described by described each second set in DICOM image file sort according to the order of CT scan, specifically can comprise:
According to described acquisition time, the DICOM image file in described each second set is sorted according to the order of CT scan.
Optionally, in a kind of possible implementation, also comprise instance number in each DICOM image file in described one group of DICOM image file, described instance number is for characterizing the scanning sequency of described each DICOM image file.
Described by described each second set in DICOM image file sort according to the order of CT scan, specifically can comprise:
According to described instance number, the DICOM image file in described each second set is sorted according to the order of CT scan.
Concrete, in above-described embodiment, because in the second set, DICOM image file is the DICOM image with same tangent plane type, therefore, described according to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set, specifically can comprise:
If the X-axis of at least two DICOM image files is identical with Y-axis data in the second set, Z axis data are different, determine that the direction, axle position of DICOM image file in described each second set is Z-direction.
If the X-axis of at least two DICOM image files is identical with Z axis data in the second set, Y-axis data are different, determine that the direction, axle position of DICOM image file in described each second set is Y direction.
If the Y-axis of at least two DICOM image files is identical with Z axis data in the second set, X-axis data are different, determine that the direction, axle position of DICOM image file in described each second set is X-direction.
Exemplary, than being 12.3 respectively if any its axle bit data of two CT images, (10.0 (5.8 (with 12.3 (10.0 (6.3, then can show that they are that to belong to direction, axle position be Z-direction, the i.e. picture in shaft-like face, and slice thickness is 6.3) 5.8=0.5 (unit omission).
It should be noted that, before carrying out CT scan, can also by manually inputting slice thickness to equipment, when carrying out DICOM Images Classification, can classify according to this slice thickness, the embodiment of the present invention does not do concrete restriction to this.Certainly, the accuracy of DICOM view data during in order to ensure reconstruction of medical images, the slice thickness of artificial input for reference only section thickness usually.
In embodiment of the present invention step S202d:
Described according to described slice thickness and described tangent plane type to described l sindividual second set hierarchical classification, obtains f the 3rd set, specifically can comprise:
According to described slice thickness, by described l sindividual second set is classified, and obtain p the 4th set, p is positive integer.
For each 4th set in described p the 4th set, according to described tangent plane type, the second set in described each 4th set is classified, obtains p qindividual 3rd set.
Wherein, p qrepresent the DICOM set of image files number obtained after the second set in q the 4th set in described p the 4th set is classified, 1≤q≤p,
That is, in the embodiment of the present invention, for described l sindividual second set, is classified as same 4th set by the DICOM image file of same slice thickness.In this step, there is the slice thickness that p different, therefore obtain p the 4th set.
For the second set in q the 4th set in described p the 4th set, the DICOM image file of same tangent plane type is classified as same 3rd set.In this step, there is p qindividual different tangent plane type, therefore obtains p qindividual 3rd set.
In embodiment of the present invention step S202e:
Type generally comprises arterial phase, venous phase and balance period by stages, this is technical term medically, divides three time periods or scans for three times, and emphasis is different, such as can in the change of artery at arterial phase emphasis, can in the change of vein at venous phase emphasis.General sequence is first time scanning is arterial phase, and second time scanning is venous phase, and third phase scanning is balance period.
Accordingly, described according to described acquisition time, determine the type by stages of each second set correspondence in described each 3rd set, specifically can comprise:
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of first time period is defined as arterial phase.
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of the second time period is defined as venous phase.
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of the 3rd time period is defined as balance period.
Wherein, described first time period is early than described second time period, and described second time period is early than described 3rd time period.
It should be noted that, in the embodiment of the present invention, because when carrying out DICOM Images Classification, the next level of tangent plane level (namely by stages level) comprises arterial phase, venous phase and balance period three by stages, and each corresponding one second set by stages, from the defining method of above-mentioned type by stages, type is by stages determined if want, 3 second set must be comprised in each 3rd set, and then in each 3rd set, determine type by stages according to the sequencing of time period.Wherein, 3f=l s.
It should be noted that, consider when carrying out CT scan, different CT image by stages scans stage by stage, therefore, if the DICOM image file in the second set in each 3rd set is the DICOM image file after sorting according to the order of CT scan, then can the acquisition time of first DICOM image file in each second set directly in more each 3rd set, and then directly determine the type by stages of each second set correspondence in each 3rd set, the embodiment of the present invention does not do concrete restriction to this.
Exemplary, suppose that 3 second set comprised in the 3rd set (set 1) (are respectively set 2, set 3 and set 4) in DICOM image file be according to CT scan order sequence after DICOM image file, the acquisition time that in set 2, first DICOM image file is corresponding is 10:10:00, the acquisition time that in set 3, first DICOM image file is corresponding is 10:01:00, the acquisition time that in set 4, first DICOM image file is corresponding is 10:20:00, because 10:01:00 is early than 10:10:00, 10:10:00 is early than 10:20:00, therefore can determine that the type by stages of set 3 correspondence is defined as arterial phase, the type by stages gathering 2 correspondences is defined as venous phase, the type by stages gathering 4 correspondences is defined as balance period.
Concrete, in embodiment of the present invention step S203:
After the one group of DICOM image file obtained is classified, can according to patient's type of described many group DICOM image files, slice thickness, tangent plane type and type by stages, generate nested file, this nested file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and type root directory by stages.
Exemplary, as shown in Figure 1, file can be created by hierarchical classification from outside to inside, outermost layer is divided into multiple file by patient identifier, the image of same patient is put into a file and (or is interpreted as level, or catalogue) in, one-level sub-folder is divided into multiple file such as 0.6mm, 1.0mm by slice thickness, secondary sub-folder is divided into shaft-like face, coronal-plane and sagittal plane three files by tangent plane type, and three grades of sub-folders are divided into arterial phase, venous phase and balance period three files by type by stages.
Concrete, in embodiment of the present invention step S204:
After the nested file of generation, according to the root directory path of this nested file, described many group DICOM image files can be imported in described nested file respectively.
Exemplary, as shown in Figure 1, after spanned file folder, can according to patient identifier root directory, slice thickness root directory, tangent plane type root directory and by stages type root directory successively many groups DICOM image file that classification obtains is imported in corresponding file.Wherein, image in each three grades of sub-folders presses axle position direction sequencing and rename in order, namely ensureing that image reads in internal memory is according to arrangement (namely direction, foregoing axle position, CT scan direction, during usual CT scan, patient is in position of lying, slowly move inwards, namely be equivalent to do a lot of section along the direction-Z-direction of patient's recumbency, often opening section is a CT image, this direction, axle position is vertical with often opening CT image, often opening CT image along the data in this direction, axle position is change, be called shaft-like face, xsect in other words.This is also the data medically usually the most directly obtained, and sagittal plane and coronal-plane can be obtained by shaft-like face data mart modeling by PACS system, can certainly scan and obtain), thus in the right direction when ensureing 3-dimensional reconstruction.
Certainly, in the embodiment of the present invention, also file at different levels can be created in advance, then described one group of DICOM image file is being classified, obtain same patient, same thickness, same tangent plane, by stages same and by after the tactic many group DICOM image files in direction, axle position, directly by each classification results write corresponding file at different levels, the embodiment of the present invention does not do concrete restriction to this.
The introduction method of the DICOM image that the embodiment of the present invention provides can according to described patient identifier, image location information, acquisition time and series number are classified to described one group of DICOM image file, obtain same patient, same thickness, same tangent plane, by stages same and press the tactic many group DICOM image files in direction, axle position, that is the DICOM image file needed for reconstruction of medical images is obtained, and can according to patient's type of described many group DICOM image files, slice thickness, tangent plane type and by stages type, generate corresponding nested file, simultaneously can according to the root directory path of described nested file, described many group DICOM image files are imported in described nested file respectively, wherein, described reconstruction of medical images file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and by stages type root directory.Therefore, based on the introduction method of the DICOM image that the embodiment of the present invention provides, when reconstruction of medical images, directly search this nested file and get final product fast finding to required view data.
Embodiment two,
The gatherer 50 of a kind of DICOM image of the embodiment of the present invention, as shown in Figure 5, described gatherer 50 comprises acquiring unit 501, taxon 502, generation unit 503 and imports unit 504.
Described acquiring unit 501, for obtaining one group of DICOM image file, wherein, comprises patient identifier corresponding to this DICOM image file, image location information, acquisition time and series number in each DICOM image file in described one group of DICOM image file.
Described taxon 502, for classifying to described one group of DICOM image file according to described patient identifier, image location information, acquisition time and series number, obtain same patient, same thickness, same tangent plane, by stages same and by the tactic many group DICOM image files in direction, axle position.
Described generation unit 503, for the patient's type according to described many group DICOM image files, slice thickness, tangent plane type and type by stages, generate nested file, described nested file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and type root directory by stages.
Described importing unit 504, for the root directory path according to described nested file, imports in described nested file respectively by described many group DICOM image files.
Concrete, described taxon 502 specifically for:
Classified by described one group of DICOM image file according to described patient identifier, obtain m the first set, m is positive integer.
For each first set in described m the first set, according to described series number, the DICOM image file in described each first set is classified, obtain l respectively sindividual second set, l srepresent the DICOM set of image files number obtained after the DICOM image file in s set in described m the first set is classified, 1≤s≤m.
For described l seach second set in individual second set, according to described image location information, determine tangent plane type corresponding to DICOM image file and slice thickness in described each second set, described tangent plane type comprises shaft-like face, coronal-plane or sagittal plane.
According to described slice thickness and described tangent plane type to described l sindividual second set hierarchical classification, obtain f the 3rd set, f is positive integer.
For each 3rd set in described f the 3rd set, according to described acquisition time, determine that each second in described each 3rd set gathers corresponding type by stages, described type by stages comprises arterial phase, venous phase or balance period.
Further, described taxon 502 specifically for:
According to described slice thickness, by described l sindividual second set is classified, and obtain p the 4th set, p is positive integer.
For each 4th set in described p the 4th set, according to described tangent plane type, the second set in described each 4th set is classified, obtains p qindividual 3rd set, p qrepresent the DICOM set of image files number obtained after the second set in q the 4th set in described p the 4th set is classified, 1≤q≤p,
Further, described taxon 502 specifically for:
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of first time period is defined as arterial phase.
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of the second time period is defined as venous phase.
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of the 3rd time period is defined as balance period.
Wherein, described first time period is early than described second time period, and described second time period is early than described 3rd time period.
Further, described image location information comprises image position coordinates.
Described taxon 502 specifically for:
The image position coordinates of DICOM image file in described each second set is decomposed into X-axis, Y-axis and Z axis data.
According to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set.
If direction, described axle position is Z-direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is shaft-like face.
If direction, described axle position is Y direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is coronal-plane.
If direction, described axle position is X-direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is sagittal plane.
Optionally, described image location information comprises image orientation.
Described taxon 502 specifically for:
If the row vector in described image orientation and the cosine value of column vector to Z axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is shaft-like face.
If the row vector in described image orientation and the cosine value of column vector to Y-axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is coronal-plane.
If the row vector in described image orientation and the cosine value of column vector to X-axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is sagittal plane.
Further, described image location information comprises image position coordinates.
Described taxon 502 specifically for:
DICOM image file in described each second set is sorted according to the order of CR scanning CT scan, obtains the second set after sequence.
According to described image position coordinates, the distance of the picture position of adjacent two DICOM images in the second set after described sequence is defined as the slice thickness that in described each second set, DICOM image file is corresponding.
Further, described taxon 502 specifically for:
The image position coordinates of each DICOM image file in described each second set is decomposed into X-axis, Y-axis and Z axis data.
According to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set.
According to the size of each DICOM image file number of axle certificate on direction, described axle position in described each second set, the DICOM image file in described each second set is sorted according to the order of CT scan.
Optionally, described taxon 502 specifically for:
According to described acquisition time, the DICOM image file in described each second set is sorted according to the order of CT scan.
Optionally, also comprise instance number in each DICOM image file in described one group of DICOM image file, described instance number is for characterizing the scanning sequency of described each DICOM image file.
Described taxon 502 specifically for:
According to described instance number, the DICOM image file in described each second set is sorted according to the order of CT scan.
Further, described taxon 502 specifically for:
If the X-axis of at least two DICOM image files is identical with Y-axis data in described each second set, Z axis data are different, determine that the direction, axle position of DICOM image file in described each second set is Z-direction.
If the X-axis of at least two DICOM image files is identical with Z axis data in described each second set, Y-axis data are different, determine that the direction, axle position of DICOM image file in described each second set is Y direction.
If the Y-axis of at least two DICOM image files is identical with Z axis data in described each second set, X-axis data are different, determine that the direction, axle position of DICOM image file in described each second set is X-direction.
Concrete, the gatherer 50 of the DICOM image provided by the embodiment of the present invention carries out the method for DICOM image importing can the description of reference example one, and the embodiment of the present invention does not repeat them here.
The gatherer of the DICOM image that the embodiment of the present invention provides can according to described patient identifier, image location information, acquisition time and series number are classified to described one group of DICOM image file, obtain same patient, same thickness, same tangent plane, by stages same and press the tactic many group DICOM image files in direction, axle position, that is the DICOM image file needed for reconstruction of medical images is obtained, and can according to patient's type of described many group DICOM image files, slice thickness, tangent plane type and by stages type, generate corresponding nested file, simultaneously can according to the root directory path of described nested file, described many group DICOM image files are imported in described nested file respectively, wherein, described reconstruction of medical images file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and by stages type root directory.Therefore, based on the gatherer of the DICOM image that the embodiment of the present invention provides, when reconstruction of medical images, directly search this nested file and get final product fast finding to required view data.
Those skilled in the art can be well understood to, for convenience and simplicity of description, the device of foregoing description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, the inner structure by device is divided into different functional modules, to complete all or part of function described above.The specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM, RAM), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.

Claims (11)

1. an introduction method for digital imaging and communications in medicine DICOM image, is characterized in that, described method comprises:
Obtain one group of DICOM image file, wherein, in each DICOM image file in described one group of DICOM image file, comprise patient identifier corresponding to this DICOM image file, image location information, acquisition time and series number;
According to described patient identifier, image location information, acquisition time and series number, described one group of DICOM image file is classified, obtain same patient, same thickness, same tangent plane, by stages same and by the tactic many group DICOM image files in direction, axle position;
According to patient's type of described many group DICOM image files, slice thickness, tangent plane type and type by stages, generate nested file, described nested file comprises patient identifier root directory, slice thickness root directory, tangent plane type root directory and type root directory by stages;
According to the root directory path of described nested file, described many group DICOM image files are imported in described nested file respectively.
2. method according to claim 1, it is characterized in that, describedly according to described patient identifier, image location information, acquisition time and series number, described one group of DICOM image file to be classified, obtain same patient, same thickness, same tangent plane, by stages same and by the tactic many group DICOM image files in direction, axle position, comprising:
Classified by described one group of DICOM image file according to described patient identifier, obtain m the first set, m is positive integer;
For each first set in described m the first set, according to described series number, the DICOM image file in described each first set is classified, obtain l respectively sindividual second set, l srepresent the DICOM set of image files number obtained after the DICOM image file in s set in described m the first set is classified, 1≤s≤m;
For described l seach second set in individual second set, according to described image location information, determine tangent plane type corresponding to DICOM image file and slice thickness in described each second set, described tangent plane type comprises shaft-like face, coronal-plane or sagittal plane;
According to described slice thickness and described tangent plane type to described l sindividual second set hierarchical classification, obtain f the 3rd set, f is positive integer;
For each 3rd set in described f the 3rd set, according to described acquisition time, determine that each second in described each 3rd set gathers corresponding type by stages, described type by stages comprises arterial phase, venous phase or balance period.
3. method according to claim 2, is characterized in that, described according to described slice thickness and described tangent plane type to described l sindividual second set hierarchical classification, obtains f the 3rd set, comprising:
According to described slice thickness, by described l sindividual second set is classified, and obtain p the 4th set, p is positive integer;
For each 4th set in described p the 4th set, according to described tangent plane type, the second set in described each 4th set is classified, obtains p qindividual 3rd set, p qrepresent the DICOM set of image files number obtained after the second set in q the 4th set in described p the 4th set is classified, 1≤q≤p,
4. according to the method in claim 2 or 3, it is characterized in that, described according to described acquisition time, determine the type by stages of each second set correspondence in described each 3rd set, comprising:
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of first time period is defined as arterial phase;
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of the second time period is defined as venous phase;
The type by stages acquisition time corresponding for DICOM image file in second set in described each 3rd set being positioned at the second set correspondence of the 3rd time period is defined as balance period;
Wherein, described first time period is early than described second time period, and described second time period is early than described 3rd time period.
5. according to the method in claim 2 or 3, it is characterized in that, described image location information comprises image position coordinates;
Described according to described image location information, determine the tangent plane type that in described each second set, DICOM image file is corresponding, comprising:
The image position coordinates of DICOM image file in described each second set is decomposed into X-axis, Y-axis and Z axis data;
According to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set;
If direction, described axle position is Z-direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is shaft-like face;
If direction, described axle position is Y direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is coronal-plane;
If direction, described axle position is X-direction, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is sagittal plane.
6. according to the method in claim 2 or 3, it is characterized in that, described image location information comprises image orientation;
Described according to described image location information, determine the tangent plane type that in described each second set, DICOM image file is corresponding, comprising:
If the row vector in described image orientation and the cosine value of column vector to Z axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is shaft-like face;
If the row vector in described image orientation and the cosine value of column vector to Y-axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is coronal-plane;
If the row vector in described image orientation and the cosine value of column vector to X-axis are 0, determine that the tangent plane type that in described each second set, DICOM image file is corresponding is sagittal plane.
7. according to the method in claim 2 or 3, it is characterized in that, described image location information comprises image position coordinates;
Described according to described image location information, determine the slice thickness that in described each second set, DICOM image file is corresponding, comprising:
DICOM image file in described each second set is sorted according to the order of CR scanning CT scan, obtains the second set after sequence;
According to described image position coordinates, the distance of the picture position of adjacent two DICOM images in the second set after described sequence is defined as the slice thickness that in described each second set, DICOM image file is corresponding.
8. method according to claim 7, is characterized in that, described by described each second set in DICOM image file sort according to the order of CT scan, comprising:
The image position coordinates of each DICOM image file in described each second set is decomposed into X-axis, Y-axis and Z axis data;
According to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set;
According to the size of each DICOM image file number of axle certificate on direction, described axle position in described each second set, the DICOM image file in described each second set is sorted according to the order of CT scan.
9. method according to claim 7, is characterized in that, described by described each second set in DICOM image file sort according to the order of CT scan, comprising:
According to described acquisition time, the DICOM image file in described each second set is sorted according to the order of CT scan.
10. method according to claim 7, is characterized in that, also comprises instance number in each DICOM image file in described one group of DICOM image file, and described instance number is for characterizing the scanning sequency of described each DICOM image file;
Described by described each second set in DICOM image file sort according to the order of CT scan, comprising:
According to described instance number, the DICOM image file in described each second set is sorted according to the order of CT scan.
11. methods according to claim 5 or 8, is characterized in that, described according to described X-axis, Y-axis and Z axis data, determine the direction, axle position of DICOM image file in described each second set, comprising:
If the X-axis of at least two DICOM image files is identical with Y-axis data in described each second set, Z axis data are different, determine that the direction, axle position of DICOM image file in described each second set is Z-direction;
If the X-axis of at least two DICOM image files is identical with Z axis data in described each second set, Y-axis data are different, determine that the direction, axle position of DICOM image file in described each second set is Y direction;
If the Y-axis of at least two DICOM image files is identical with Z axis data in described each second set, X-axis data are different, determine that the direction, axle position of DICOM image file in described each second set is X-direction.
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