WO2001013797A1 - Aktiver helixscanner - Google Patents
Aktiver helixscanner Download PDFInfo
- Publication number
- WO2001013797A1 WO2001013797A1 PCT/EP2000/006925 EP0006925W WO0113797A1 WO 2001013797 A1 WO2001013797 A1 WO 2001013797A1 EP 0006925 W EP0006925 W EP 0006925W WO 0113797 A1 WO0113797 A1 WO 0113797A1
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- WO
- WIPO (PCT)
- Prior art keywords
- elements
- acoustic
- receiver
- area
- transmitter
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/13—Tomography
- A61B8/15—Transmission-tomography
Definitions
- the invention relates to an active helix scanner for detecting a structure embedded in a medium in 3D mode, in which the helix scanner is guided over the structure in a spiral.
- This active helix scanner can be used wherever an unknown structure is embedded in a medium, such as in medicine when examining the human or animal body, in technology when examining cast, pressed, coated or already assembled components Pipe systems that are difficult or inaccessible, for volume measurements and for determining the shape of a structure.
- Linear ultrasound heads are mostly used for this. These generally consist of individual piezo elements arranged next to one another, which in succession continuously emit a pulse with the same frequency on the structure to be examined. These impulses are successively reflected at acoustic boundary layers and received again. The transit time of the pulses is measured and the depth of the unknown boundary layer is then determined from the transit time.
- the representations generated in this way are also only two-dimensional.
- a three-dimensional representation can be generated if the structure to be examined is recorded from at least two different positions of the ultrasound heads, from which a three-dimensional image is then calculated.
- the linear ultrasound heads already described are designed to be pivotable, and the structure is scanned in layers. The individual layers are then converted into a three-dimensional image in a computer. Under these conditions it is also possible to have different phases of movement to represent a structure, however, this method requires a considerable amount of computation and the images generated have the disadvantages already described.
- the computer tomograph works with X-rays, which realize a sufficiently high frequency and can therefore penetrate the tissue.
- the X-rays penetrate the structure of interest from one side and are received by a detector on the opposite side.
- the fabric is in two-dimensional axial layers, the extent of which is determined by the feed of the table, on which e.g. the patient lies down.
- the x-ray arrangement encircles the patient by 360 ° per exposure.
- the patient is then moved on to the table for the next shift.
- the received signals are entered into a computer, in which the information is evaluated and combined into three-dimensional images.
- In order to capture a specific area of the human body e.g. About 40 slices of the abdomen were made, with a picture taking about 1 sec. The resolution is about 0.5 to 1 mm.
- X-rays are required so that, for example, a person's tissue can be completely penetrated.
- the data of the structure is thus acquired in transmission.
- the decisive disadvantage when using computer tomographs is that the radiation exposure to the patient may be very high, since the rays penetrate the entire body and several images have to be taken to display them.
- a contrast agent must be used in many cases, which must be administered to the patient.
- the object of the present invention is therefore to overcome the disadvantages of the prior art and to propose a recording unit for the information about an unknown structure in a medium, which provides images with a high resolution and does not cause the patient to be exposed to radiation.
- the unknown structures should be captured and displayed immediately in 3D mode.
- the detection unit should be able to be attached as close as possible to the unknown structure and the information about its position and size should be recorded as simply as possible.
- the active helix scanner for capturing a structure embedded in a medium in 3D mode is designed with a transmitter that has a conical transmission beam and a receiver that is guided in a spiral over the structure, so that a first and a second there is an acoustic module, the first acoustic module having transmitting elements with a coherent sound reinforcement room and the second acoustic module having receiver elements with a coherent receiving space, the acoustic modules being exactly opposite one another and the structure being arranged between them.
- the public address area of the transmitting elements and the receiving area of the receiving elements overlap as completely as possible in the area of the unknown structure.
- the firmly coupled acoustic modules are moved spirally around the structure.
- the pitch of the spiral movement path is at most the width of the overlap of the reception area of the receiver elements with the sound reinforcement area of the transmission elements.
- a send / receive cycle is triggered in steps which are at most equal to the diameter of the overlap of the reception area of the receiver elements with the sound reinforcement area of the transmission elements, the transmission signal being modulated with any modulation function.
- the permanently coupled pair of acoustic modules one of which is a transmission element for transmission signals with any modulation function and the other
- Receiver elements for the transmission signals weakened by the unknown structure as a result of absorption represent a transceiver device lying in a line, the connecting line of which passes through the structure to be examined.
- a transmit-receive cycle is triggered between the permanently coupled acoustic modules, ie a transmit signal with any one is generated by the first acoustic module
- Modulation function transmitted and received by the opposite acoustic module equipped with receiver elements The pair of acoustic modules then rotates around the center of their connecting line on a spiral path around a path which is determined by the diameter of the reception area and a new transmission / reception cycle is started. The pair of acoustic modules is stopped during the time of the transmit / receive cycle.
- the second acoustic module which is equipped with receiver elements, detects the entire information content of the unknown structure in the reception room when rotated through 360 °, which in the ideal case only represents a narrow line. Depending on the resolution requirement, this reception area can be widened.
- the pair of acoustic modules is thus moved in succession on the spiral path already described.
- the entire area of interest of the structure is scanned in a spiral and can be displayed in 3D mode. If the distance to the next transmit / receive cycle is greater than the diameter of the overlap of the reception area of the receiver elements with the sound reinforcement area of the transmission elements, the entire information content is no longer received, so information is lost. However, it is entirely possible to choose twice the stride length and to record the gaps when the pair is returned on the spiral path of the acoustic modules.
- the arrangement described corresponds approximately to the structure of a computer tomograph with the difference that ultrasound signals are used which are modulated with any modulation function and that the recordings are not made continuously. In addition, a patient does not experience radiation exposure.
- This arrangement can preferably be used for the acquisition and display of soft tissues, since the receiver elements record a transmission signal that passes through the unknown structure and which may contain the denser layers. cannot penetrate.
- a further development of the active helix scanner is characterized in that the first acoustic module additionally contains receiver elements with a coherent one Receiving room has such that the public address room of the transmitting elements and the receiving rooms of the receiving elements overlap as completely as possible in the area of the unknown structure and the two parts of the first acoustic module are arranged on the same side of the structure.
- the signals reflected on the structure are also received.
- the reflected part of the transmission signal emitted by the transmission elements is received by the receiver elements on the first acoustic module.
- the first acoustic module consists of two spatially separated parts, the first part of the acoustic module e.g. the transmission elements and the second part e.g. contains the receiver elements and the two parts of the first acoustic module with the second acoustic module span a plane that is perpendicular to the axis of rotation of the spiral movement path of the acoustic modules.
- Public address room of the transmitting elements and the receiving rooms of the receiving elements should also overlap as completely as possible in the area of the unknown structure.
- the two parts of the first acoustic module are preferably on the same side of the
- REPLACEMENT BLA ⁇ (RULE 26) Structure arranged so that a complete detection of the reflected signals can take place.
- This exemplary embodiment is similar to that already described, the reflections on the structure only take place at a smaller angle than in the first exemplary embodiment of this type. However, the angle should not be so large that the part of the first acoustic module with the receiver elements is shadowed by the structure. Then there would possibly be two reception volumes in transmission.
- Another solution of the active helix scanner for detecting a structure embedded in a medium in 3D mode with a transmitter and a receiver with a conical transmission beam, which are guided in a spiral over the structure arises from the fact that at least two pairs, each with a first and a second acoustic module are present, that the first acoustic module contains transmitter elements with a coherent PA room and optionally receiver elements with a coherent reception room and the second acoustic module contains receiver elements with a coherent reception room that the pairs of acoustic modules in one plane perpendicular to the axis of rotation the spiral movement path and are arranged opposite each other on a structure and are firmly coupled to one another in such a way that the sound reinforcement rooms of the transmitter elements and the reception rooms of the receiver elements of the acoustic modules are in the area of the unknown Overlap the structure as completely as possible.
- the pitch of the spiral movement path of the pairs of acoustic modules has at most the width of the smallest overlap of a public address room with the corresponding reception area of the acoustic modules multiplied by the number of acoustic modules with receiver elements.
- a send / receive cycle is triggered in steps which are at most equal to the diameter of the overlapping sound reinforcement area of the transmission elements with the reception areas of the receiver elements, the transmission signal being modulated with any modulation function.
- Another solution to the problem which enables a further reduction in the acquisition time, is to use an active helix scanner to acquire an embedded in a medium
- REPLACEMENT BLADE Structure in 3D mode with a transmitter and a receiver with a conical transmission beam, which are guided in a spiral over the structure, achieved by the fact that in superimposed planes, which are arranged perpendicular to the axis of rotation of the spiral movement path, the same number of pairs arranged firmly with each other Coupled acoustic modules are present, with each pair containing an acoustic module transmitting elements with a coherent PA room and optionally receiver elements with a coherent receiving room and the other acoustic module containing receiver elements with a coherent receiving room.
- the public address rooms and the reception rooms of the acoustic modules on each level overlap as completely as possible in the area of the unknown structure.
- the pitch of the spiral movement path of the acoustic modules has a maximum width of the smallest overlap of a reception room with the sound reinforcement of the transmitter elements of the acoustic modules multiplied by the number of acoustic modules with receiver elements and the number of levels.
- steps that are at most equal to the diameter of the overlapping sound reinforcement area of the transmission elements and the reception area of the receiver elements of one level a transmission-reception cycle is triggered simultaneously between all pairs, the transmission signal being modulated with any modulation function.
- the transmission elements with the coherent PA room on one part of the acoustic module send a transmission signal with any modulation function in the direction of the structure.
- This signal is reflected and weakened by the acoustic impedances of the structure, since absorption also takes place here.
- This transmit-receive cycle is repeated for each step on the spiral path of the acoustic module after the acoustic module has been stopped.
- the spiral movement can also have a path which, after the greatest distance between two adjacent acoustic modules, has a change of direction in the opposite direction, so that the path of movement is continued in a spiral in the opposite direction after each change.
- the acoustic modules which are firmly connected to one another, do not perform a closed spiral, but rather the spiral movement is continued in sections in the opposite direction.
- the transmission elements on the acoustic modules can be switched into receiver elements and the receiver elements can be switched over into transmission elements and if a second transmission-reception cycle is triggered after the switching of the active elements, since, as already mentioned, the reflection behavior and the transmission behavior of a tissue can be different. Two representations are then created with possibly meaningful differences. This is also possible with a closed spiral of movement.
- the transmission signals can be modulated differently by the individual acoustic modules.
- the assignment of the transmit and receive signals could then be simplified under certain conditions.
- the modules should be made as small as possible and have as many active elements as possible. Since all public address rooms and reception rooms on one level overlap, that is to say a transmission signal can be received by all receiver elements, only certain reception rooms are ever active for evaluating the received signals. The signals received by other transmission elements cause changes in the waveform of the signal and are masked out by a noise suppression circuit.
- each of the active helix scanners shown can also be constructed in such a way that the firmly coupled acoustic modules spiral around a cylindrical container filled with a contact medium, in which the medium with the unknown Structure can be arranged, moved.
- a device which is constructed such that the transmitter has a memory for storing the transmitted signal as a reference signal and the receiver an A / D converter and a memory for storing the digitized received signal follows that both memories for correlating the reference signal with the digitized received signal with a correlator for determining the position of the reflection points
- REPLACEMENT BLADE (RULE 26) are connected, which is followed by a device for noise suppression and a memory for storing the correlated and noise-reduced signal, that the transmitter and the receiver are connected to a position transmitter, which indicates the step size and the range of values for the spiral movement of the transmitter and receiver that the Position transmitter a control unit, a multiplexer and a visualization device follows.
- the modulated transmission signal is stored in a memory as a reference signal, while the received signal is digitized and also stored in a memory. Both signals are correlated in a corrector to determine the position of the reflection points.
- the resulting noisy signal is checked using a threshold function or the like. freed from noise in a device for noise suppression and initially stored in a memory. If there are several receivers at the same time, the other received signals are processed in parallel in the same way as the first one. Before the amplitude values for the visualization are finally saved, the signals of the various receivers correlated and noise-suppressed with the reference signal must be correlated with one another in a suitable manner (e.g. by averaging).
- the step size and the range of values for the spiral movement of the acoustically coupled modules can be specified on the position encoder. Then there are at least two possibilities of data storage as a basis for the representation of the amplitude values of the received signals.
- a control unit then controls the multiplexer depending on the entered step size in order to store the corresponding signal values in the intended storage location and to call them up again if necessary.
- a counter counts the memory location by 1 with each step of the scanner (i.e. even with a step size of 10, each memory location is occupied. Thus, only 10% of the
- the position (linear specification: l, ..., n) of the scanner determines the spatial coordinates of the associated public address room.
- the corresponding signal values can thus be taken from the memory and displayed using standard 3-D visualization programs.
- Fig. 1 shows a helical scanner in a schematic representation with two acoustic modules, in which one acoustic module is equipped with transmitter elements and receiver elements and the other acoustic module with receiver elements;
- Fig. 2 shows a schematic representation of a helix scanner with an acoustic module, which is equipped with transmitter elements and receiver elements;
- Fig. 3 shows a schematic representation of a helix scanner with two acoustic modules, of which one acoustic module consists of two parts;
- Fig. 4 shows a schematic representation of a helix scanner with two pairs of acoustic modules, each of which is an acoustic module with transmission elements and
- Receiver elements and the other acoustic module is equipped with receiver elements
- Fig. 5 shows a schematic representation of a helix scanner with three levels, each with one
- Pair of acoustic modules one of which is equipped with transmitter elements and receiver elements and the other acoustic module with receiver elements;
- FIG. 6 shows a device for detecting a structure embedded in a medium
- FIG. 7 shows another exemplary embodiment of a device for detecting a structure embedded in a medium in 3D mode
- FIG. 8 shows an embodiment of a device for detecting a structure embedded in a medium in 3D mode for reflected and transmitted transmission signals.
- 1 shows an active helix scanner for capturing a structure 3 embedded in a medium in 3D mode, which has a first 1 and a second 2 acoustic module, the first acoustic module 1 transmitting elements 4 with a coherent public address room and receiving elements 5 with a coherent reception room, the second acoustic module 2 receiver elements 5 with a coherent
- the acoustic modules 1, 2 face each other exactly and between them the structure 3 to be examined is arranged such that the sound reinforcement area of the transmitter elements 4 and the reception area of the receiver elements 5 overlap as completely as possible in the area of the unknown structure 3.
- the acoustic modules 1, 2 are firmly coupled to one another and move on a spiral movement path 7 about the axis of rotation 8, which lies within the structure 3.
- the pitch 6 of the spiral movement path 7 is at most the width of the overlap of the reception area of the receiver elements 5 with the sound reinforcement area of the transmission elements 4.
- the acoustic modules stopped and a transmit-receive cycle triggered, the transmit signal being modulated with any modulation function.
- FIG. 2 shows a helix scanner which has only one acoustic module 1, on which are located both transmitter elements 4 with a coherent public address room and receiver elements 5 with a coherent reception room, which overlap in the area of the unknown structure 3.
- Fig. 3 an active helix scanner is shown, which is characterized in that the first acoustic module 1 consists of two spatially separate parts, the first part of the acoustic module 1, the transmitter elements 4 and the second part, the receiver elements 5 and the second acoustic Module 2 contains receiver elements 5.
- the two parts of the first acoustic module 1 span a plane that is perpendicular to the axis of rotation 8 of the spiral movement path 7, with the
- the active helix scanner for detecting a structure 3 embedded in a medium in 3D mode in accordance with FIG. 4 is characterized in that there are at least two pairs, each with a first 1 and a second acoustic module 2, with the first acoustic module 1 transmitting elements 3 with a coherent public address room and optionally receiver elements 5 with a coherent reception room and the second acoustic module 2 contains receiver elements 5 with a coherent reception room.
- the pairs of acoustic modules 1, 2 lie in a plane perpendicular to the axis of rotation 8 of the spiral movement path 7 and are each arranged opposite one another on a structure 3 and firmly coupled to one another in such a way that the public address rooms of the transmitting elements 4 and the receiving rooms of the receiving elements 5 of the acoustic Modules 1, 2 overlap as completely as possible in the area of the unknown structure 3.
- the pitch 6 of the spiral movement path 7 of the pairs of acoustic modules 1, 2 has a maximum of
- steps that are equal to the diameter of the overlapping public address room of transmitter elements 4 and the reception room of the receivers - elements 5 a send-receive cycle is triggered, the transmit signal being modulated with any modulation function.
- FIG. 5 shows an active helix scanner for detecting a structure 3 embedded in a medium in 3D mode with a transmitter and a receiver with a conical transmission beam, which are guided in a spiral over the structure.
- the active helix scanner is designed in such a way that in planes lying one above the other, which lie perpendicular to the axis of rotation 8 of the spiral movement path 7, there is in each case the same number of paired acoustic modules 1, 2, each of which has an acoustic module in each pair 1 or 2 transmitter elements 4 with a coherent PA room and optional receiver elements 5 with a coherent one
- reception room and the other acoustic module 2 or 1 receiver elements 5 with a coherent reception room.
- REPLACEMENT BUTT (RULE 26) Structure 3 as complete as possible.
- the pitch 6 of the spiral movement path 7 of the acoustic modules 1, 2 about the axis of rotation 8 has at most the width of the smallest overlap of a reception room with the sound reinforcement area of the transmission elements 4 of the acoustic modules 1, 2 multiplied by the number of acoustic modules 2 with receiver elements 5 and the number of levels.
- steps that are at most equal to the diameter of the overlapping sound reinforcement area of the transmission elements 4 and the reception area of the receiver elements 5 of one level a transmission-reception cycle is triggered simultaneously between all pairs, the transmission signals being modulated with any modulation function.
- the received signals which contain the entire information content of the unknown structure 3, are processed in a processing unit so that the information can be represented in an image, i.e. the structure 3 can be made visible on a visualization device 19.
- the processing unit for processing the information of a structure 3 embedded in a medium in 3D mode with a transmitter and a receiver with a conical transmission beam, which are guided spirally over the structure 3, is designed according to FIG. 6 in such a way that the transmission elements 4 have a memory 9 for storing the transmission signal as a reference signal and the receiver elements 5 is followed by an A / D converter 10 and a memory 11 for storing the digitized received signal. Both memories 9, 11 are connected to a correlator 12 for correlating the reference signal with the digitized received signal for determining the position of the reflection points, which is followed by a device for noise suppression 13 and a memory 14 for storing the correlated and low-noise signal.
- the transmitter and receiver elements are connected to a position transmitter 15 which specifies the step size and the value range for the spiral movement of the acoustic modules 1, 2.
- the position transmitter 15 is followed by a control unit 16, a multiplexer 17, a memory 18 and a visualization device 19.
- FIG. 7 shows a processing unit for processing the information one in one
- the transmitter elements 4 are followed by a memory 9 for storing the transmit signal as a reference signal and the two receiver elements 5 each have an A / D converter 10 and a memory 11 for storing the digitized received signal.
- the two memories 11 each have a correlator 12 for correlating the reference signal with the digitized ones
- Received signals for determining the position of the reflection points are connected downstream, each of which is followed by a device for noise suppression 13 and a memory 14 for storing the correlated and low-noise signals.
- the transmitter and receiver elements 4, 5 are connected to a position transmitter 15 which specifies the step size and the range of values for the spiral movement of acoustic modules 1, 2.
- the position transmitter 15 is followed by a control unit 16, which is connected to a counter 20, a multiplexer 17, a memory 18 and a visualization device 19.
- FIG. 8 shows another embodiment of a processing unit for processing the information of a structure 3 embedded in a medium in 3D mode.
- Processing unit shows a structure with a small memory requirement. It is provided for a helix scanner that consists of two acoustic modules 1, 2, of which the acoustic module 1 contains transmitter elements 4 and the second acoustic module 2 contains receiver elements 5.
- the processing unit simultaneously represents a channel of a pair of acoustic modules 1, 2, in which several pairs of acoustic modules are provided.
- Transmitter elements 4 are followed by a memory 9 for storing the transmission signal as a reference signal and the receiver elements 5 are followed by an A / D converter 10 and a memory 11 for storing the digitized received signal. Both memories 9, 11 are connected to a correlator 12 for correlating the reference signal with the digitized received signal for determining the position of the reflection points, which is followed by a device for noise suppression 13 and a memory 14 for storing the correlated and low-noise signal.
- the transmitter and receiver elements are connected to a position transmitter 15 which specifies the step size and the value range for the spiral movement of the acoustic modules 1, 2.
- the position transmitter 15 is followed by a control unit 16, which is connected to a counter 20, a multiplexer 17, a memory 18 and a visualization device 19.
- the arbitrarily modulated transmission signal is stored as a reference signal in a memory 9, while the reception signal is digitized and
- REPLACEMENT BLADE (RULE 26) is also stored in a memory 11. Both signals are correlated in the correlator 12 for determining the position of the reflection points. The resulting noisy signal is freed of noise with the aid of a threshold value function or the like and is initially stored in a memory, the memory 14. If several receivers are provided for the reception of this transmission signal, the other received signals are processed in parallel in exactly the same way as the first one. Before the final storage of the amplitude values for the visualization, the signals of the receiver elements 5 which are individually correlated and noise-suppressed with the reference signal must be correlated with one another in a suitable manner in correlators 12, freed from noise and stored individually in a memory 14 (for example by averaging).
- the step size and the range of values for the spiral movement of the transmitter and receiver elements are specified by the position sensor 15. Afterwards there are at least two possibilities of data storage as basis for the visualization. Either a memory is provided that provides sufficient memory space to be able to record all amplitude values (also signal values) with a minimum step size and maximum value range, or a counter counts the memory space position by 1 with each step of the helix scanner. This will e.g. with a step size of 10 each spoke space, and thus only 10% of the space required.
- the control unit 16 then controls the multiplexer 17 depending on the step size entered, in order to then store the corresponding signal values in the intended memory location and to call them up again as required (i.e. with a step size of 10, only every tenth memory location is occupied.)
- the position of the scanner and the associated signal values are then stored at each position of the memory.
- the position (linear specification: l, ..., n) of the scanner determines the spatial coordinates of the associated public address room.
- the corresponding signal values can thus be taken from the memory and displayed using standard 3-D visualization programs.
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Radiology & Medical Imaging (AREA)
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- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002376099A CA2376099A1 (en) | 1999-08-21 | 2000-07-20 | Active helical scanner |
EP00953076A EP1204374A1 (de) | 1999-08-21 | 2000-07-20 | Aktiver helixscanner |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999139793 DE19939793A1 (de) | 1999-08-21 | 1999-08-21 | Aktiver-Helixscanner |
DE19939793.7 | 1999-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001013797A1 true WO2001013797A1 (de) | 2001-03-01 |
Family
ID=7919227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/006925 WO2001013797A1 (de) | 1999-08-21 | 2000-07-20 | Aktiver helixscanner |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1204374A1 (de) |
CA (1) | CA2376099A1 (de) |
DE (1) | DE19939793A1 (de) |
WO (1) | WO2001013797A1 (de) |
Cited By (4)
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CN104853098A (zh) * | 2015-05-06 | 2015-08-19 | 广西科技大学 | 一种3d打印机模型图像采集箱体 |
CN105415686A (zh) * | 2015-07-24 | 2016-03-23 | 广西科技大学 | 一种3d打印机图像半球形采集箱体 |
CN106686284A (zh) * | 2015-11-10 | 2017-05-17 | 湖南六新智能科技有限公司 | 一种人体人像扫描仪 |
CN112867444A (zh) * | 2018-10-15 | 2021-05-28 | 皇家飞利浦有限公司 | 用于引导对超声图像的采集的系统和方法 |
Families Citing this family (4)
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DE10112034A1 (de) * | 2001-03-14 | 2002-10-02 | Sonem Gmbh | Anordnung zur Bildwiedergabe für Computertomographen mit Ultraschall |
DE10137186A1 (de) * | 2001-07-31 | 2003-02-20 | Mohammed Ashfaq | Verfahren und Applikator für die Spiral-Computer-Tomographie mit Ultraschall in der Medizin |
CN110710990B (zh) * | 2019-09-29 | 2021-07-02 | 华中科技大学 | 一种螺旋超声断层成像方法及系统 |
CN111035411B (zh) * | 2019-12-31 | 2020-11-24 | 华中科技大学 | 一种基于螺旋扫描的超声断层三维成像方法及系统 |
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DE19614223C1 (de) * | 1996-04-10 | 1997-12-04 | Siemens Ag | Bildrekonstruktionsverfahren für Mehrzeilendetektor-Computertomographen im Spiralbetrieb |
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1999
- 1999-08-21 DE DE1999139793 patent/DE19939793A1/de not_active Withdrawn
-
2000
- 2000-07-20 WO PCT/EP2000/006925 patent/WO2001013797A1/de not_active Application Discontinuation
- 2000-07-20 EP EP00953076A patent/EP1204374A1/de not_active Withdrawn
- 2000-07-20 CA CA002376099A patent/CA2376099A1/en not_active Abandoned
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104853098A (zh) * | 2015-05-06 | 2015-08-19 | 广西科技大学 | 一种3d打印机模型图像采集箱体 |
CN105415686A (zh) * | 2015-07-24 | 2016-03-23 | 广西科技大学 | 一种3d打印机图像半球形采集箱体 |
CN105415686B (zh) * | 2015-07-24 | 2018-06-08 | 广西科技大学 | 一种3d打印机图像半球形采集箱体 |
CN106686284A (zh) * | 2015-11-10 | 2017-05-17 | 湖南六新智能科技有限公司 | 一种人体人像扫描仪 |
CN112867444A (zh) * | 2018-10-15 | 2021-05-28 | 皇家飞利浦有限公司 | 用于引导对超声图像的采集的系统和方法 |
CN112867444B (zh) * | 2018-10-15 | 2024-05-07 | 皇家飞利浦有限公司 | 用于引导对超声图像的采集的系统和方法 |
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DE19939793A1 (de) | 2001-02-22 |
CA2376099A1 (en) | 2001-03-01 |
EP1204374A1 (de) | 2002-05-15 |
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