JPS5769268A - Gamma ray tomographic apparatus - Google Patents

Gamma ray tomographic apparatus

Info

Publication number
JPS5769268A
JPS5769268A JP55145690A JP14569080A JPS5769268A JP S5769268 A JPS5769268 A JP S5769268A JP 55145690 A JP55145690 A JP 55145690A JP 14569080 A JP14569080 A JP 14569080A JP S5769268 A JPS5769268 A JP S5769268A
Authority
JP
Japan
Prior art keywords
data
distance
filter
detector
reconstructed
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.)
Pending
Application number
JP55145690A
Other languages
Japanese (ja)
Inventor
Akihide Kamiyama
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 JP55145690A priority Critical patent/JPS5769268A/en
Publication of JPS5769268A publication Critical patent/JPS5769268A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
    • G01T1/2914—Measurement of spatial distribution of radiation
    • G01T1/2985—In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis)

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Nuclear Medicine (AREA)

Abstract

PURPOSE:To obtain a good reconstructed image by applying a different filter function corresponding to the distance between a test object and a detector. CONSTITUTION:A projection data from one direction is memorized by one frame into a data memory 8 to form a reconstructed data matrix. In the processing of data, memory 8 to form a reconstructed data matrix. In the processing of data, with the action of a distance discrimination circuit 12, one filter is selected from among filters 9 according to the distance between a test object and a detector and an image is reconstructed based on the data corrected by the filter thus selected. In other words, a filter enhancing the high frequency component is applied to a projection data from a distance closer to the detector with a filter inhibiting thereof is done to a projection data from a distance farther from the detector.
JP55145690A 1980-10-20 1980-10-20 Gamma ray tomographic apparatus Pending JPS5769268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55145690A JPS5769268A (en) 1980-10-20 1980-10-20 Gamma ray tomographic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55145690A JPS5769268A (en) 1980-10-20 1980-10-20 Gamma ray tomographic apparatus

Publications (1)

Publication Number Publication Date
JPS5769268A true JPS5769268A (en) 1982-04-27

Family

ID=15390834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55145690A Pending JPS5769268A (en) 1980-10-20 1980-10-20 Gamma ray tomographic apparatus

Country Status (1)

Country Link
JP (1) JPS5769268A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63200086A (en) * 1987-02-16 1988-08-18 Shimadzu Corp Ect apparatus
US5434416A (en) * 1993-03-24 1995-07-18 Kabushiki Kaisha Toshiba Method and apparatus for reconstructing SPECT image by utilizing two separate reconstruction filter functions
WO2008122903A3 (en) * 2007-04-04 2009-05-22 Koninkl Philips Electronics Nv Isotropic resolution image reconstruction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63200086A (en) * 1987-02-16 1988-08-18 Shimadzu Corp Ect apparatus
US5434416A (en) * 1993-03-24 1995-07-18 Kabushiki Kaisha Toshiba Method and apparatus for reconstructing SPECT image by utilizing two separate reconstruction filter functions
WO2008122903A3 (en) * 2007-04-04 2009-05-22 Koninkl Philips Electronics Nv Isotropic resolution image reconstruction
JP2010523965A (en) * 2007-04-04 2010-07-15 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Isotropic resolution image reconstruction
US8488850B2 (en) 2007-04-04 2013-07-16 Koninklijke Philips Electronics N.V. Isotropic resolution image reconstruction

Similar Documents

Publication Publication Date Title
EG13271A (en) Processing method of natural gamma ray well logging data
GB2347499A (en) Tomographic reconstruction of electronic components from shadow image sensor data
DE3276201D1 (en) Coin examination apparatus employing an rl relaxation oscillator
ZA772759B (en) Apparatus for minimizing radiation exposure and improving resolution in radiation imaging devices
DE3168325D1 (en) Arrangement for the stroboscopic measuring of a potential with an electron beam measuring apparatus, and method of operating such an apparatus
JPS52153493A (en) Optical measuring apparatus for particle property and adjusting method thereof
ES8305946A1 (en) X-Ray generator incorporating automatic correction of a dose-determining exposure parameter
DE3378595D1 (en) Energy window selection for a radiation signal processing system
JPS5769268A (en) Gamma ray tomographic apparatus
SE7907065L (en) ANTI-REFLECTION DEVICE FOR DATA AND RADAR SCREEN SCREENS
EP0000139A3 (en) Unloader for an x-ray film-holding casette
IL63386A0 (en) Display analyzer and method for analyzing an image
JPS56149754A (en) Particle collision localizer and cathode ray tube oscilloscope and image pickup tube with same
JPS57168645A (en) Radioactive ray image photographing apparatus
DE3375858D1 (en) Process for the examination of the radiographic image of an object irradiated with ionizing rays, and ionization chamber for carrying out this process
JPS56138268A (en) Radial fault photographing equipment for positron
JPS5428135A (en) Method and apparatus for movie projection
EP0142864A3 (en) X-ray diagnostic apparatus utilizing x-ray shield member
JPS51113572A (en) Centering method for electronic ray picture and the unit using the sai d method
GB1542193A (en) Cathode-ray tube screening exposure method
JPS57142506A (en) Measuring apparatus employing gamma ray dosemeter
JPS54129298A (en) Method and device for correcting aberration at deflection in particle ray apparatus
JPS56119135A (en) High resolution irregular electrophotographic element and photographic method
JPS5633688A (en) Method and circuit for displaying error in relative value against reference value on crt screen
JPS5291391A (en) Method of utilizing exposure time at maximum and x ray tester used directly therefor