JPS54100680A - Computer tomographic equipment - Google Patents

Computer tomographic equipment

Info

Publication number
JPS54100680A
JPS54100680A JP760278A JP760278A JPS54100680A JP S54100680 A JPS54100680 A JP S54100680A JP 760278 A JP760278 A JP 760278A JP 760278 A JP760278 A JP 760278A JP S54100680 A JPS54100680 A JP S54100680A
Authority
JP
Japan
Prior art keywords
detector
rays
collimator
detectors
ray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP760278A
Other languages
Japanese (ja)
Other versions
JPS6336775B2 (en
Inventor
Sunao Shigemura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP760278A priority Critical patent/JPS54100680A/en
Publication of JPS54100680A publication Critical patent/JPS54100680A/en
Publication of JPS6336775B2 publication Critical patent/JPS6336775B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

PURPOSE: To eliminate the variation in sensitivity of a detector due to the shade of a collimator by making the angle interval of the plate X-ray screen part of the collimator removing scattering X rays equal to or "one divided by an integer" as much as the effective angle of the detector.
CONSTITUTION: Several X-ray detector 8 are fixed and arranged on the same circumference of a circule centering on "O". Then, X-ray source 3 goes round a detected body on the circumference concentric with detectors 8 and radiates X rays in a folding-fan shape. In order to prevent X rays from scattering, collimator 7 made of several plate X-ray screen parts rotating synchronizing with X-ray source 3 is provided to the front surface of detector 8. Here, the effective angle range of detector 8 viewed from center "O" is denoted by B degree, and an angle contained by adjacent collimators 7 is by C degree with B equal to nC (n=1, 2, 3...). As a result, one or several collimators 7 as many as detectors 8 are within the effective angle range of detectors 8 without fail and although X rays are cut off, its rate is constant invariably, so that the sensitivity of detector 8 will not change. Collimators can therefore be provided which remove scattering X rays.
COPYRIGHT: (C)1979,JPO&Japio
JP760278A 1978-01-26 1978-01-26 Computer tomographic equipment Granted JPS54100680A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP760278A JPS54100680A (en) 1978-01-26 1978-01-26 Computer tomographic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP760278A JPS54100680A (en) 1978-01-26 1978-01-26 Computer tomographic equipment

Publications (2)

Publication Number Publication Date
JPS54100680A true JPS54100680A (en) 1979-08-08
JPS6336775B2 JPS6336775B2 (en) 1988-07-21

Family

ID=11670339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP760278A Granted JPS54100680A (en) 1978-01-26 1978-01-26 Computer tomographic equipment

Country Status (1)

Country Link
JP (1) JPS54100680A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59500587A (en) * 1982-04-15 1984-04-05 エヌ・シー・アール・インターナショナル・インコーポレイテッド memory addressing system
JPS6260539A (en) * 1985-09-11 1987-03-17 株式会社東芝 X-ray ct apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52107795A (en) * 1976-02-25 1977-09-09 Emi Ltd Radiation photograph

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52107795A (en) * 1976-02-25 1977-09-09 Emi Ltd Radiation photograph

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59500587A (en) * 1982-04-15 1984-04-05 エヌ・シー・アール・インターナショナル・インコーポレイテッド memory addressing system
JPH0443304B2 (en) * 1983-04-01 1992-07-16 Ncr Co
JPS6260539A (en) * 1985-09-11 1987-03-17 株式会社東芝 X-ray ct apparatus

Also Published As

Publication number Publication date
JPS6336775B2 (en) 1988-07-21

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