CN116115245B - Stereotactic frame for fusion of abdominal basin PET, CT and MR images - Google Patents
Stereotactic frame for fusion of abdominal basin PET, CT and MR images Download PDFInfo
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- 230000004927 fusion Effects 0.000 title claims abstract description 19
- 230000003187 abdominal effect Effects 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 72
- 210000001015 abdomen Anatomy 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 12
- 239000002872 contrast media Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229910052740 iodine Inorganic materials 0.000 claims description 4
- 239000011630 iodine Substances 0.000 claims description 4
- 230000005298 paramagnetic effect Effects 0.000 claims description 4
- 239000000700 radioactive tracer Substances 0.000 claims description 4
- 239000011796 hollow space material Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- 238000012790 confirmation Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 210000003414 extremity Anatomy 0.000 description 13
- 238000003384 imaging method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
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- 210000004072 lung Anatomy 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0033—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room
- A61B5/0035—Features or image-related aspects of imaging apparatus, e.g. for MRI, optical tomography or impedance tomography apparatus; Arrangements of imaging apparatus in a room adapted for acquisition of images from more than one imaging mode, e.g. combining MRI and optical tomography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/037—Emission tomography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
- A61B6/0421—Supports, e.g. tables or beds, for the body or parts of the body with immobilising means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
- A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
- A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
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Abstract
The invention belongs to the field of medical images, and particularly relates to a stereotactic frame for fusion of abdominal basin PET, CT and MR images, which comprises a direction adjusting mechanism, a first bracket mechanism and a second bracket mechanism; the direction adjusting mechanism comprises a shaft bracket and a rotating shaft arranged in a through hole of the shaft bracket; the three-dimensional orientation frame is formed by combining a plurality of support mechanisms, the combined design is convenient for independent and rapid installation on each PET, CT and MR examination bed, the overlapped composite registration of positioning points displayed by each tracking rod in the corresponding coordinate axis direction is assisted, and the folding design of each support mechanism is convenient for storage and transfer to the examination bed required for examination for repeated installation; the three-dimensional directional frame is in a standard three-dimensional state, is convenient to combine, has the positioning points on X, Y and Z axes which are positioned clearly, is provided with initial reference points at the crotch stopping part, is convenient for the comparison and fusion of the positioning points, is an external three-dimensional directional frame for assisting in the confirmation of the positioning points, and the positioning points comprise an external body and an internal body and are not interfered by the body types of patients.
Description
Technical Field
The invention relates to the field of medical images, in particular to a stereotactic frame for fusion of abdominal basin PET, CT and MR images.
Background
PET examination is a novel imaging technology for displaying the activities of biomolecule metabolism, receptors and neuromediators on living bodies, has high sensitivity, can find the focus when nuclear magnetism and CT examination are not clearly diagnosed, can obtain three-dimensional images for quantitative analysis, achieves the aim of early diagnosis, is incomparable with other image examination at present, has high specificity and can make qualitative diagnosis according to the high metabolism characteristics of malignant tumors;
The CT examination refers to an electronic computer X-ray tomography technology, which measures the human body by an instrument with extremely high sensitivity according to the difference of absorption and transmittance of different tissues of the human body, then inputs the data obtained by measurement into an electronic computer, and after the electronic computer processes the data, the electronic computer can shoot the cross section or three-dimensional image of the examined part of the human body, find out the tiny lesions of any part in the body, the CT can better display organs composed of soft tissues, such as brain, spinal cord, mediastinum, lung, liver, gall, pancreas, pelvic organs and the like, the images of the CT are expressed by different gray scales, and reflect the absorption degree of the organs and tissues to the X rays;
The so-called MR examination is a nuclear magnetic resonance examination, which is a very common imaging examination technical means at present, is used for determining some damages and tumors which cannot be determined by X-rays and CT, is relatively safe because of no radiation, and works on the principle that nuclei with non-zero magnetic moment form zeeman splitting, and then the generated frequency and spectrum are absorbed identically, so that an image is formed;
The above-mentioned inspection can only be carried out by using special PET equipment, CT equipment and MR equipment, and the difference between the imaging model and the image after the inspection is great, the focus area is estimated after the professional knowledge of the reader is combined with the imaging model and the image to carry out contrast analysis, although the accuracy of searching the focus area is improved, the focus area confirmation difference is still easy to appear due to the existence of the influence of the difference, and the follow-up confirmation of the operation scheme aiming at the focus area is influenced.
The prior art has the following problems:
The conventional external characteristic method is used for installing a tracking rod on a limb (abdominal basin) of a patient, positioning points are externally arranged on an imaging model and an image, and image fusion of PET, CT and MR is assisted by the positioning points.
Disclosure of Invention
Object of the invention
In order to solve the technical problems in the background technology, the invention provides a three-dimensional directional frame for fusion of images of abdominal region PET, CT and MR, which has the characteristics that the combined design is convenient, the combined type frame is independently and quickly installed on each PET, CT and MR examination bed, the overlapped composite registration of positioning points displayed by each tracking rod in the direction of the corresponding coordinate axis is assisted, and the folding type design of each bracket mechanism is convenient, and the folded type frame is convenient to be stored and transferred to the examination bed required to be used for examination for repeated installation.
(II) technical scheme
In order to solve the technical problems, the invention provides a stereotactic frame for fusion of PET, CT and MR images of the abdomen basin, which comprises a direction adjusting mechanism, a first bracket mechanism and a second bracket mechanism;
the direction adjusting mechanism comprises a shaft bracket and a rotating shaft arranged in a through hole of the shaft bracket, and two ends of the rotating shaft are provided with adjusting knobs;
The first support mechanism comprises a crotch stopping frame arranged in the middle of the PET, CT and MR examination bed, the tail end of the crotch stopping frame is connected with a first upright post rotating along the Z-axis direction through a direction adjusting mechanism, the other end of the first upright post is connected with two groups of first side posts rotating along the X-axis direction through a direction adjusting mechanism, and the other end of the first side post is provided with a hollow first positioning frame;
the second support mechanism comprises a second upright post, one end of the second upright post is formed with a second positioning table penetrating into the clamping cavity of the first positioning frame, the other end of the second upright post is connected with a second side post rotating along the X-axis direction through a direction adjusting mechanism, and the other end of the second side post is provided with a hollow second positioning frame;
The clamping mechanism comprises a column clamp which is clamped and installed on the outer walls of the first upright post, the first side post and the second upright post, a shaft collar is installed on the upper portion of the column clamp, a rotatable loose axle is installed in an inner cavity of the shaft collar, a tracking rod frame with a clamping groove formed in the inner portion is installed at the other end of the loose axle, and a tracking rod is installed in the tracking rod frame in a clamping mode;
Five groups of tracking rods are arranged in total, and two groups of tracking rods on opposite faces are staggered.
Preferably, the end face of the crotch stop frame, which is contacted with limbs, is of a curved surface structure, and a bed seat connected with any of PET, CT and MR examining beds is arranged at the bottom.
Preferably, the first upright post and the two first side posts are in a T-shaped structure when unfolded, and the crotch stop frame, the first upright post and the two first side posts are in an L-shaped structure when folded.
Preferably, the first positioning frame inner cavity is matched with the second positioning table in specification, and the first positioning frame inner cavity and the second positioning table are fixedly spliced.
Preferably, a cavity is formed in the tracking rod, and a PET tracer corresponding to PET detection, an iodine agent high-density contrast agent corresponding to CT detection and a paramagnetic contrast agent corresponding to MR detection are placed in the cavity.
Preferably, the first upright post, the first side post and the second upright post are combined to form an M-shaped structure, and the legs of the patient penetrate through the hollow sections clamped by the first upright post, the first side post and the second upright post.
Preferably, the device further comprises a third support mechanism, the third support mechanism comprises a third upright post, one end of the third upright post is provided with a third positioning table penetrating into the second positioning frame, and the other end of the third upright post is connected with a third side post rotating along the X-axis direction through a direction adjusting mechanism.
Preferably, the third support mechanisms are arranged in two groups, symmetrically arranged in the second positioning frames of the second side columns after two unfolding, the two third side columns after unfolding are attached to each other, the whole of the combination of the two third support mechanisms is of an inverted U-shaped structure, and the abdomen basin of the patient body is located below the U-shaped structure.
Preferably, the column clamps are respectively clamped on the first side column and the third side column, and the tracking rods are arranged in the upper two tracking rod frames in a clamping mode.
Preferably, the column clamps are respectively clamped on the second upright column and the third upright column, and the tracking rods are arranged in the upper two tracking rod frames in a clamping mode.
The technical scheme of the invention has the following beneficial technical effects:
1. the three-dimensional orientation frame is formed by combining a plurality of bracket mechanisms, the combined design is convenient for independent and rapid installation on each PET, CT and MR examination bed, and the folding design of each bracket mechanism is convenient for storage and transfer to the examination bed required for examination for repeated installation;
2. The three-dimensional directional frame is in a standard three-dimensional state, the three-dimensional directional frame is convenient to combine, meanwhile, the three-dimensional directional frame is provided with positioning points on X, Y and a Z axis which are positioned clearly, an initial datum point is erected on the crotch stopping frame, the comparison and fusion of the positioning points are convenient, the external three-dimensional directional frame assists in the confirmation of the positioning points, and the positioning points comprise an external body and an internal body and are not interfered by the body types of patients.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a first bracket mechanism according to the present invention;
FIG. 3 is a schematic view of a folding structure of a first bracket mechanism according to the present invention;
FIG. 4 is a schematic view of a second bracket mechanism according to the present invention;
FIG. 5 is a schematic view of a clamping mechanism according to the present invention;
FIG. 6 is a schematic diagram of a second embodiment of the present invention;
FIG. 7 is a schematic view showing the combination of the first, second and third bracket mechanisms according to the present invention;
Fig. 8 is a schematic view showing the separation structure of the first bracket mechanism, the second bracket mechanism and the third bracket mechanism of the present invention.
Reference numerals:
11. A shaft bracket; 12. a rotating shaft; 13. an adjustment knob; 21. a crotch stopping frame; 22. a bed seat; 23. a first upright; 24. a first jamb; 25. a first positioning frame; 31. a second upright; 32. a second positioning table; 33. a second jamb; 34. a second positioning frame; 41. a column clamp; 42. a collar; 43. a loose axle; 44. a tracking stick frame; 5. a tracking rod; 61. a third upright; 62. a third positioning stage; 63. and a third jamb.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Examples
As shown in fig. 1-5, the stereotactic frame for fusion of images of abdomen and basin PET, CT and MR provided by the invention comprises a direction-adjusting mechanism, a first bracket mechanism and a second bracket mechanism;
The direction-adjusting mechanism comprises a shaft bracket 11 and a rotating shaft 12 arranged in a through hole of the shaft bracket 11, wherein the two ends of the rotating shaft 12 are provided with adjusting knobs 13, the direction-adjusting mechanism is in a rotary design, and the adjusting knobs 13 can drive the rotating shaft 12 to rotate in the through hole of the shaft bracket 11 so as to drive each support column arranged on the rotating shaft 12 to rotate for 90 degrees;
The first support mechanism comprises a crotch stopping frame 21 arranged in the middle of the PET, CT and MR examination bed, the tail end of the crotch stopping frame 21 is connected with a first upright post 23 rotating along the Z-axis direction through a direction adjusting mechanism, the other end of the first upright post 23 is connected with two groups of first side posts 24 rotating along the X-axis direction through a direction adjusting mechanism, and the other end of the first side post 24 is provided with a hollow first positioning frame 25;
The second bracket mechanism comprises a second upright post 31, one end of the second upright post 31 is formed with a second positioning table 32 penetrating into the clamping cavity of the first positioning frame 25, the other end of the second upright post is connected with a second side post 33 rotating along the X-axis direction through a direction adjusting mechanism, and the other end of the second side post 33 is provided with a hollow second positioning frame 34;
The clamping mechanism comprises a column clamp 41 which is clamped and installed on the outer walls of the first upright 23, the first side column 24 and the second upright 31, a shaft collar 42 is installed on the upper portion of the column clamp 41, a rotatable movable shaft 43 is installed in the inner cavity of the shaft collar 42, a tracking rod frame 44 with a clamping groove formed in the inner portion is installed at the other end of the movable shaft 43, and a tracking rod 5 is installed in the inner portion of the tracking rod frame 44 in a clamping mode;
It should be noted that: five groups of tracking rods 5 are arranged in total, and two groups of tracking rods 5 on opposite surfaces are staggered; the central tracking rod 5 corresponds to the central portion of the patient's limb, the tracking rod 5 mounted on the second upright 31 corresponds to the Z-axis direction of the patient's limb (side limb), and the tracking rod mounted on the first side column 24 corresponds to the X-axis direction of the patient's limb (upper limb).
In one embodiment, when the limb of the patient is detected, the crotch stopping frame 21 is arranged at the center point of any of the PET, CT and MR examining beds, the first support mechanism is initially fixed on the examining bed, the end face of the crotch stopping frame 21 contacting the limb is of a curved surface structure and contacts with the crotch and leg positions of the limb of the patient, the bed seat 22 connected with the examining bed is arranged at the bottom of the crotch stopping frame 21, at the moment, the first upright 23 is rotated to be in a state of being level with the examining bed by the operation of the direction adjusting mechanism, the PET, CT and MR examining under the condition of no shielding of the tracking rod is carried out, and the acquisition of the non-shielding PET, CT and MR images is carried out;
Subsequently, the first upright 23 is adjusted to be vertical to the window surface of the examination bed, the first side column 25 is rotated outwards to be vertical to the first upright 23, the second positioning table 32 of the second upright 31 is matched with the second support mechanism, the second positioning table 32 of the second upright 31 is inserted into the first positioning frame 25 of the first side column 24, the second upright 31 is vertically arranged in the interval between the first side column 24 and the examination bed, the installation of the tracking rod 5 on the first upright 23, the first side column 24 and the second upright 31 is assisted by the clamping mechanism, the length of the tracking rod 5 corresponds to the limb length of a patient at this time, the acquired PET, CT and MR images are provided with a plurality of positioning points in the whole body coordinate axis direction, the registration of the PET, CT and MR images with the positioning points is assisted by computer equipment, three images are fused into one image, and the indication data of the PET, CT and MR images under the whole body limb are displayed on the fused images.
The PET, CT and MR are inspected twice, one is in a non-shielding state, the other is in a shielding state of the tracking rod 5, and the image processing technology can be adopted to re-fuse the PET, CT and MR images in the non-shielding state according to the fused PET, CT and MR images in the shielding state, so as to acquire a non-shielding fused image to assist the focus judgment of a reader.
As shown in fig. 3-4, the first upright 23 and the two first side posts 24 are in a T-shaped structure when being unfolded, the unfolded two first side posts 24 are used for connecting the two second bracket mechanisms, the combined whole of the first upright 23, the first side posts 24 and the second upright 31 is in an M-shaped structure, and the legs of a patient pass through the hollow sections clamped by the first upright 23, the first side posts 24 and the second upright 31.
In the case of detecting the unobstructed condition, the crotch stop frame 21, the first upright 23, and the two first side posts 24 are folded to have an "L-shaped" configuration, and the limbs of the patient are exposed to the outside, so that the whole body is unobstructed.
In order to facilitate the connection between the first side column 24 and the second upright column 31, further, the inner cavity of the first positioning frame 25 is matched with the specification of the second positioning table 32, and the first positioning frame and the second positioning table are fixed in a plugging manner.
As shown in fig. 5, a cavity is formed in the tracking rod 5, a PET tracer corresponding to PET detection, an iodine agent high-density contrast agent corresponding to CT detection and a paramagnetic contrast agent corresponding to MR detection are placed in the cavity, and the tracking rod 5 corresponding to the PET tracer, the iodine agent high-density contrast agent and the paramagnetic contrast agent is selected for each detection;
The clamping mechanism is double-sided clamping, the column clamp 41 is used for connecting columns of all bracket mechanisms, the tracking rod frame 44 is used for connecting the tracking rod 5, the movable shaft 43 in the middle and the rotary design of the shaft collar 42 can enable the tracking rod 5 to be integrally inclined to the whole limb of a patient, and a plurality of positioning points are obtained.
Examples
As shown in fig. 6 to 8, the third support mechanism includes a third upright post 61, one end of the third upright post 61 is provided with a third positioning table 62 penetrating into the second positioning frame 34, the other end is connected with a third side post 63 rotating along the X-axis direction through a direction adjusting mechanism, the third support mechanism is provided with two groups in total, the third support mechanism is symmetrically arranged in the second positioning frames 34 of the two unfolded second side posts 33, the two unfolded third side posts 63 are attached, the combined whole of the two third support mechanisms is in an inverted "U-shaped" structure, and the abdomen basin of the patient body is positioned below the "U-shaped" structure.
It should be noted that: the third support mechanism can be additionally arranged through the second support mechanism to perform special detection on the abdomen basin, the interval between the first side column 24 and the third side column 63 is the abdomen basin area, and the length of the tracking rod 5 is the same as the distance between the abdomen basin area.
In another embodiment, the column clamp 41 is respectively clamped on the first side column 24 and the third side column 63, and the upper two tracking rod frames 44 are internally clamped and provided with the tracking rods 5, and the two tracking rod frames correspond to the X-axis direction of the abdomen basin of the patient;
the column clamps 41 are respectively clamped on the second column 31 and the third column 61, the upper two tracking rod frames 44 are internally and fixedly provided with the tracking rods 5, and the two tracking rod frames correspond to the Z-axis direction of the abdomen basin of the patient;
On the one hand, the abdominal basin is limited, and on the other hand, the stability of the tracking rod 5 in the state of moving along with the examination bed in the detection device is maintained;
The acquired PET, CT and MR images are provided with a plurality of positioning points aiming at the abdomen basin in the whole body coordinate axis direction, registration of the PET, CT and MR images with the positioning points is carried out by the assistance of computer equipment, the three images are fused into one, and the indication data of the PET, CT and MR images on the abdomen basin are displayed on the fused images.
The three-dimensional directional frames of the first bracket mechanism, the second bracket mechanism and the third bracket mechanism are in a standard three-dimensional state, the three-dimensional directional frames are convenient to combine, meanwhile, the three-dimensional directional frames have positioning points on X, Y and a Z axis which are positioned clearly, an initial datum point is arranged on the crotch stop frame 21, the comparison and the fusion of the positioning points are convenient, the external three-dimensional directional frames assist in the confirmation of the positioning points, and the positioning points comprise an external body and an internal body and are not interfered by the body type of a patient.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (8)
1. The stereotactic frame for fusion of the images of the abdomen basin PET, CT and MR is characterized by comprising a direction adjusting mechanism, a first bracket mechanism and a second bracket mechanism;
the direction adjusting mechanism comprises a shaft bracket (11) and a rotating shaft (12) arranged in a through hole of the shaft bracket (11), and two ends of the rotating shaft (12) are provided with adjusting knobs (13);
The first support mechanism comprises a crotch stopping frame (21) arranged in the middle of the PET, CT and MR examination bed, the tail end of the crotch stopping frame (21) is connected with a first upright post (23) rotating along the Z-axis direction through a direction adjusting mechanism, the other end of the first upright post (23) is connected with two groups of first side posts (24) rotating along the X-axis direction through a direction adjusting mechanism, and the other end of the first side post (24) is provided with a hollow first positioning frame (25);
The second support mechanism comprises a second upright post (31), one end of the second upright post (31) is formed with a second positioning table (32) penetrating into the clamping cavity of the first positioning frame (25), the other end of the second upright post is connected with a second side post (33) rotating along the X-axis direction through a direction adjusting mechanism, and the other end of the second side post (33) is provided with a hollow second positioning frame (34);
the clamping mechanism comprises a column clamp (41) which is clamped and installed on the outer walls of the first upright (23), the first side column (24) and the second upright (31), a shaft collar (42) is installed on the upper portion of the column clamp (41), a rotatable loose axle (43) is installed in an inner cavity of the shaft collar (42), a tracking rod frame (44) with a clamping groove formed in the inner portion is installed at the other end of the loose axle (43), and a tracking rod (5) is installed in the inner clamping of the tracking rod frame (44);
Five groups of tracking rods (5) are arranged in total, and two groups of tracking rods (5) on opposite faces are staggered;
the crotch stopping frame (21) is provided with an initial datum point, the end face of the crotch stopping frame (21) contacting with limbs is of a curved surface structure, and the bottom of the crotch stopping frame is provided with a bed seat (22) connected with any examination bed of PET, CT and MR;
Under the shielding of the tracking rod (5), the first upright post (23) is perpendicular to the bed seat (22), and the crotch stopping frame (21), the first upright post (23) and the two first side posts (24) are of an unfolded T-shaped structure;
under no shielding of the tracking rod (5), the first upright post (23) is flush with the bed seat (22), and the crotch stopping frame (21), the first upright post (23) and the two first side posts (24) are of a folded L-shaped structure.
2. Stereotactic frame for abdominal PET, CT and MR image fusion according to claim 1, characterized in that the first positioning frame (25) cavity and the second positioning table (32) are matched in specification, and the two are fixed in a plugging manner.
3. The stereotactic frame for abdominal PET, CT and MR image fusion according to claim 1, wherein the interior of the tracking rod (5) is provided with a cavity, and a PET tracer corresponding to PET detection, an iodine agent high-density contrast agent corresponding to CT detection and a paramagnetic contrast agent corresponding to MR detection are placed in the cavity.
4. Stereotactic frame for abdominal PET, CT and MR image fusion according to claim 1, characterized in that the first upright (23), the first side post (24) and the second upright (31) are combined as a whole in an "M-shaped" structure, the leg of the patient passing through the hollow space clamped by the first upright (23), the first side post (24) and the second upright (31).
5. Stereotactic frame for abdominal PET, CT and MR image fusion according to claim 1, characterized in that it further comprises a third support mechanism comprising a third upright (61), one end of the third upright (61) being mounted with a third positioning table (62) penetrating the second positioning frame (34), the other end being connected with a third jamb (63) rotating in X-axis direction by means of a steering mechanism.
6. A stereotactic frame for abdominal PET, CT and MR image fusion according to claim 5, wherein the third support means are provided in two groups, symmetrically mounted in the second positioning frames (34) of the second side posts (33) after two expansions, and the two third side posts (63) after expansions are attached, the combination of the two third support means is an inverted "U" structure, and the abdominal part of the patient is located under the "U" structure.
7. Stereotactic frame for abdominal PET, CT and MR image fusion according to claim 6, characterized in that the clamps (41) are clamped on the first (24) and third (63) jambs, respectively, the upper two tracking rod holders (44) being internally clamped with the tracking rod (5).
8. Stereotactic frame for abdominal PET, CT and MR image fusion according to claim 7, characterized in that the clamps (41) are clamped on the second (31) and third (61) uprights respectively, the upper two tracking rod holders (44) having the tracking rod (5) mounted therein.
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| CN104490415A (en) * | 2015-01-12 | 2015-04-08 | 天津医科大学第二医院 | Stereotactic frame for fusion of PET, CT and MR images of the abdomen and pelvis |
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| JPH05253311A (en) * | 1992-03-12 | 1993-10-05 | Hitachi Medical Corp | Positioning apparatus for radiation therapeutic apparatus |
| CN2353317Y (en) * | 1997-12-27 | 1999-12-15 | 深圳奥沃国际科技发展有限公司 | Multifunction stereo positioning frame |
| US6159221A (en) * | 1998-11-25 | 2000-12-12 | The Ohio State University | Stereotactic apparatus and methods |
| KR20020080696A (en) * | 2001-04-17 | 2002-10-26 | 정태섭 | Portable supporting stand for a camera |
| CN103584878B (en) * | 2013-11-27 | 2016-02-10 | 北京市医疗器械检验所 | Multi-mode registration test method and equipment |
| CN104510489B (en) * | 2015-01-12 | 2017-02-08 | 天津医科大学第二医院 | Device for PET-CT-MR image fusion and fixation of experimental animal |
| CN213190160U (en) * | 2020-05-15 | 2021-05-14 | 朱忠军 | CT/MR abdominopelvic cavity directional frame |
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