Title:
DYNAMIC ADJUSTMENT METHOD FOR CT SYSTEM SCANNING
Document Type and Number:
WIPO Patent Application WO/2021/031968
Kind Code:
A1
Abstract:
A dynamic adjustment method for CT system scanning. In the method, a cone beam emitted by an X-ray source is adjusted by adjusting an independent opening baffle A and an opening baffle B of a CT system. The process specifically comprises three stages: an initial stage, in which upon detecting that the cone beam emitted by the X-ray source has come into contact with a region to be scanned, starting a scan and driving the opening baffle A to open, where the coverage of the cone beam on an X axis is [g(dx A), g(dx B)], and entering an intermediate stage when g(dx A) = −g(dx B); the intermediate stage, in which both the opening baffle A and the opening baffle B are maintained in a fully open state; and an end stage, which is entered when −g(dx A) > g(dx B), and which comprises driving the opening baffle B to start closing, while maintaining the opening baffle A in the fully open state. The shape/range of the cone beam can be effectively controlled according to the shape of the region to be scanned of a patient, so that it is possible to maximally reduce an ineffective scan region in clinical spiral CT scanning, reduce an overall scan dose, and ensure the quality of an image of an effective region.
Inventors:
ZENG KAI (CN)
Application Number:
PCT/CN2020/108809
Publication Date:
February 25, 2021
Filing Date:
August 13, 2020
Export Citation:
Assignee:
NANJING ANKE MED TECH CO LTD (CN)
International Classes:
A61B6/03; A61B6/06
Foreign References:
| CN110368018A | 2019-10-25 | |||
| JP2009028559A | 2009-02-12 | |||
| CN102202578A | 2011-09-28 | |||
| CN1846620A | 2006-10-18 | |||
| CN103648393A | 2014-03-19 |
Attorney, Agent or Firm:
NANJING ZHISHI LAW FIRM OF INTELLECTUAL PROPERTY (CN)
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