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A dose modulation method and device

A technology of dose modulation and dose, applied in the field of medical imaging, to achieve the effect of low scanning dose

Active Publication Date: 2021-08-13
NEUSOFT MEDICAL SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that in a scan, there will be special position constraints and special time constraints. Under these two constraints, how to better perform dose modulation scans can not only meet the clinical requirements for image noise consistency, but also ensure the use of lower scanning dose, which is a problem that cannot be solved by conventional dose modulation methods

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Embodiment Construction

[0073] In order to make the objects, technical solutions, and advantages of the present application, the technical solutions in the present application embodiment will be clearly described, and the described embodiments will be described in conjunction with the drawings in the present application embodiment. It is an embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative labor premises, all of the present application protected.

[0074] Currently, conventional dose modulation is only concerned about reconstructing the noise consistency of the image, and its goal is to maintain the consistency of image noise throughout the scan, but cannot guarantee the minimum radiation dose.

[0075] In order to overcome the above defects, the present application proposes a dose modulation method that considers the different scanning ranges ...

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Abstract

The present application discloses a dose modulation method and device, which divides the entire dose-modulated area to be scanned into multiple to-be-scanned sections, so that the image noise corresponding to each to-be-scanned section is consistent, and the difference between different to-be-scanned sections The image noise of the to-be-scanned interval can be inconsistent; if a certain to-be-scanned interval has time constraints, the scanning time of the to-be-scanned interval can be further divided into multiple time intervals according to the time constraints within the to-be-scanned interval, so that each time The image noises corresponding to the intervals are consistent, but the image noises between different time intervals may be inconsistent. It can be seen that when dose modulation is performed based on the above position constraints and time constraints, a modulation method using a lower scan dose can be realized at different scan positions and scan times and under the premise of meeting different image noise levels that meet clinical needs.

Description

Technical field [0001] The present application relates to the field of medical imaging technology, and more particularly to a dose modulation method and apparatus. Background technique [0002] At present, when the electronic computer tomography, the computer tomography, the CT) device is used for the scan object, for different scanning doses, the corresponding image noise is inconsistent with the same scanner; for different parts of the same scan object, use When the same scanner is dose, the corresponding image noise corresponding to each portion will be inconsistent. This is because the X-rays between the different scan objects have attenuated differences, and there is attenuation difference between the different parts of the same scan object, and the same part of the same scan object is attenuated at different rotation scan angles. difference. [0003] The conventional dose modulation method is based on the attenuation of X-rays based on the scan object itself, and dispensing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/40A61B6/5258A61B6/54
Inventor 楼珊珊逄岭
Owner NEUSOFT MEDICAL SYST CO LTD
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