A Conversion System for Positioning Images

A technology for locating images and images, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of unreliable and unsafe reference benchmarks, and achieve the effect of non-invasive in vivo dose dynamic monitoring and precise management of respiratory motion

Active Publication Date: 2022-05-20
PEKING UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of unreliable and unsafe reference standards in the prior art, and propose a positioning image conversion system, which is closer to the reference anatomical structure of the patient, and can be applied to multiple Dynamic tracking of respiratory phase state while retaining the advantages of the original technology such as high efficiency, non-invasive, safe, reliable and flexible

Method used

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  • A Conversion System for Positioning Images
  • A Conversion System for Positioning Images
  • A Conversion System for Positioning Images

Examples

Experimental program
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Embodiment 1

[0031] Embodiment one: if figure 1 As shown, the technical solution adopted in the present invention is: a positioning image conversion system, including: an image conversion unit, according to the positioning CT to obtain the two-dimensional projection associated with the corresponding breathing time as a reference standard and collected during the treatment process The breathing motion information is compared to obtain a real-time reference benchmark that matches the breathing motion.

[0032] The methods of obtaining respiratory motion signals include but are not limited to: optical body surface system to monitor body surface motion information, respiratory gating system to use infrared rays to track the motion waveform of body surface reflection markers, implant beacons to obtain target areas through signal acquisition devices Or the real-time position of organs, tracking human anatomical markers (such as diaphragm), etc.

[0033] The breathing motion information collecte...

Embodiment 2

[0035] Embodiment two: if figure 2 Shown, on the basis of embodiment one,

[0036] Further, the comparison unit compares the treatment beam with the real-time reference, so as to monitor the status of the patient's treatment beam.

[0037] The treatment beam has time dimension and anatomical space information, which can be compared with the real-time reference benchmark to monitor whether the patient’s treatment beam is set properly. When an abnormal situation occurs, it can give an alarm in time to suspend the treatment. If it is not appropriate, it can be adjusted in real time. Improve patient treatment safety and prognosis, and reduce the risk of major radiotherapy accidents. Further, the positioning CT is three-dimensional CT or four-dimensional CT. Both three-dimensional CT and four-dimensional CT can realize the object of the present invention, and generate a two-dimensional projection map of a specified angle.

[0038] Further, the image conversion unit generates a ...

Embodiment 3

[0087] Embodiment 3: A conversion method for positioning images, comprising:

[0088] The two-dimensional projection associated with the corresponding respiratory time obtained from the positioning CT is compared with the respiratory motion information collected during the treatment process as a reference, and a real-time reference that matches the respiratory motion is obtained.

[0089] Further, the positioning CT is three-dimensional CT or four-dimensional CT.

[0090] Further, the treatment outgoing beam is compared with the real-time reference, so that the state of the patient's treatment outgoing beam can be monitored.

[0091] Further, according to the different respiratory phases of the four-dimensional positioning CT, a two-dimensional projection map of a specified angle is generated, and the two-dimensional projection map is associated with its corresponding breathing time, as the input of the synthetic network model, and the output is the predicted EPID exit beam pr...

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Abstract

The invention discloses a positioning image conversion system, which includes: an image conversion unit, which obtains the two-dimensional projection associated with the corresponding breathing time according to the positioning CT as a reference, compares it with the breathing motion signal collected during the treatment process, and calculates Get a real-time reference benchmark that matches your breathing motion. The positioning image conversion system of the present invention is closer to the patient's reference anatomical structure, and can be applied to dynamic tracking involving multiple respiratory phase states, and has the advantages of high efficiency, non-invasiveness, safety, reliability, and flexibility.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a positioning image conversion system. Background technique [0002] Respiratory exercise is one of the most common causes of tumor off-target in thoracic radiotherapy patients, which can easily lead to failure of tumor control and / or damage to important normal organs. Because the amplitude and frequency of respiratory movement are determined by many factors such as the patient's gender and age, mental state, related diseases, radiotherapy position fixation device, respiratory movement management measures, and many other factors, there are complex individual differences and uncertainties in the pattern. The previous patents failed to solve the problem of dynamic tracking of moving tumor targets. The main reason is that although 4DCBCT has information about the time-varying anatomical structure of the same patient, it currently only has a kilovolt imaging modality, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/33A61B6/00A61B6/03A61N5/10
CPCG06T7/344A61B6/032A61B6/5211A61N5/1037A61N5/1064G06T2207/20081G06T2207/20084G06T2207/10081
Inventor 张艺宝黄宇亮马文君李晨光王少彬吴昊刘宏嘉
Owner PEKING UNIV
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