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1. WO2019041101 - SYSTEMS AND METHODS FOR DETERMINING ROTATION ANGLES

Publication Number WO/2019/041101
Publication Date 07.03.2019
International Application No. PCT/CN2017/099347
International Filing Date 28.08.2017
IPC
A61B 6/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
CPC
A61B 6/032
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
032Transmission computed tomography [CT]
A61B 6/035
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
02Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
03Computerised tomographs
032Transmission computed tomography [CT]
035Mechanical aspects of CT
A61B 6/40
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
40with arrangements for generating radiation specially adapted for radiation diagnosis
A61B 6/4411
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
44Constructional features of the device for radiation diagnosis
4411the device being modular
A61B 6/5294
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
52Devices using data or image processing specially adapted for radiation diagnosis
5294involving using additional data, e.g. patient information, image labeling, acquisition parameters
A61B 6/54
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
54Control of devices for radiation diagnosis
Applicants
  • SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD. [CN]/[CN]
Inventors
  • WANG, Jingbo
  • GUO, Weiqiang
  • HUA, Xiangyu
Agents
  • METIS IP (CHENGDU) LLC
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEMS AND METHODS FOR DETERMINING ROTATION ANGLES
(FR) SYSTÈMES ET PROCÉDÉS DE DÉTERMINATION D'ANGLES DE ROTATION
Abstract
(EN)
Systems and methods for determining rotation angles are disclosed. The systems may perform the methods to: obtain a rotation speed of a radioactive scanning source(115) in a CT scanner(110); obtain a plurality of original projection acquisition times corresponding to a plurality of projection samples, the plurality of projection samples being associated with rotation of the radioactive scanning source(115); determine a plurality of original rotation angles corresponding to the plurality of projection samples based on the plurality of original projection acquisition times and the rotation speed of the radioactive scanning source(115); and determine a plurality of modified rotation angles corresponding to the plurality of projection samples by modifying the plurality of original rotation angles.
(FR)
La présente invention concerne des systèmes et des procédés de détermination d'angles de rotation. Les systèmes peuvent mettre les procédés en œuvre pour : obtenir une vitesse de rotation d'une source de balayage radioactive (115) dans un scanner CT (110); obtenir une pluralité de temps d'acquisition de projection d'origine correspondant à une pluralité d'échantillons de projection, où la pluralité d'échantillons de projection est associée à la rotation de la source de balayage radioactive (115); déterminer une pluralité d'angles de rotation d'origine correspondant à la pluralité d'échantillons de projection en fonction de la pluralité de temps d'acquisition de projection d'origine et de la vitesse de rotation de la source de balayage radioactive (115); et déterminer une pluralité d'angles de rotation modifiés correspondant à la pluralité d'échantillons de projection par modification de la pluralité d'angles de rotation d'origine.
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