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1. WO2014206794 - IMAGING APPARATUS

Publication Number WO/2014/206794
Publication Date 31.12.2014
International Application No. PCT/EP2014/062608
International Filing Date 17.06.2014
IPC
A61B 6/03 2006.1
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
A61B 6/00 2006.1
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 6/405
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
405Source units specially adapted to modify characteristics of the beam during the data acquisition process
A61B 6/4291
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
42with arrangements for detecting radiation specially adapted for radiation diagnosis
4291the detector being combined with a grid or grating
A61B 6/5205
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
5205involving processing of raw data to produce diagnostic data
A61B 6/542
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
6Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
54Control of apparatus or devices for radiation diagnosis
542involving control of exposure
Applicants
  • KONINKLIJKE PHILIPS N.V. [NL]/[NL] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW)
  • PHILIPS GMBH [DE]/[DE] (DE)
Inventors
  • PROKSA, Roland
Agents
  • VERWEIJ, Petronella Danielle
Priority Data
13173758.726.06.2013EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) IMAGING APPARATUS
(FR) APPAREIL D'IMAGERIE
Abstract
(EN) The invention relates to an X-ray imaging apparatus and a method, particularly to a CT scanner (100) for generating sectional images of an object such as the body (P) of a patient. A given desired angular intensity distribution (Ides) is reproduced by emitting X-rays (X) in emission angle intervals (EAI) only, wherein the angular distribution of these emission angle intervals and the associated local emission intensities (1(α)) are chosen such that they reproduce, in the angular mean, the desired angular intensity distribution (Ides). Modulation of incident X-ray flux is hence realized by the modulation of the angular sampling density. The X-ray source may preferably be realized by a grid switching tube (101).
(FR) La présente invention concerne un appareil d'imagerie à rayons X et une méthode, particulièrement un tomodensitomètre (100) pour la génération d'images en section d'un objet tel que le corps (P) d'un patient. Une distribution d'intensité angulaire souhaitée donnée (Ides) est reproduite par émission de rayons X (X) à des intervalles d'angle d'émission (EAI) uniquement, la distribution angulaire de ces intervalles d'angle d'émission et des intensités d'émission locales associées (1(α)) étant choisie de sorte à reproduire, de façon angulaire, la distribution d'intensité angulaire souhaitée (Ides). La modulation du flux de rayons X incidents est ainsi obtenue par la modulation de la densité d'échantillonnage angulaire. La source de rayons X peut préférentiellement être obtenue par un tube à permutation de grille (101).
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