JPS6435667A - Method for reconstituting pseudo parallel - Google Patents

Method for reconstituting pseudo parallel

Info

Publication number
JPS6435667A
JPS6435667A JP62191895A JP19189587A JPS6435667A JP S6435667 A JPS6435667 A JP S6435667A JP 62191895 A JP62191895 A JP 62191895A JP 19189587 A JP19189587 A JP 19189587A JP S6435667 A JPS6435667 A JP S6435667A
Authority
JP
Japan
Prior art keywords
pseudo
data
reconstituting
processed
picture
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
JP62191895A
Other languages
Japanese (ja)
Inventor
Kyojiro Nanbu
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
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 filed Critical Toshiba Corp
Priority to JP62191895A priority Critical patent/JPS6435667A/en
Publication of JPS6435667A publication Critical patent/JPS6435667A/en
Pending legal-status Critical Current

Links

Landscapes

  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
  • Image Analysis (AREA)

Abstract

PURPOSE:To prevent the deterioration of a space resolution through a simple reconstitution processing by reconstituting a picture by using pseudo parallel beam data. CONSTITUTION:After respective outputs C, C0 from a detector 2 and a reference detector 4 are collected by a data acquisition device DAS5, they are given reference correction and log conversion by a pre-processor 6, and are converted to be fan beam data Pfan(psi,beta). This data is inputted to a reconstituting device 7, and the fan beam data is converted into the pseudo parallel beam data Pseudo(psi,theta) by a fan-pseudo parallel conversion processor 10 in a device 10, and is inputted to a convolver 20. The Pseudo is processed by a fast Fourier transformer FF11, and is outputted as being the pair of a real part Rtheta,n and an imaginary part Itheta,n, and they are multiplied 14, 15 respectively by a factor An+Bn in a constant memory 12 and the factor An-Bn in the constant memory 13, and after being processed by an inverse fast Fourier transformer IFFT16, are multiplied by a value cospsi in the constant memory 17 by a multiplier 18. As the result, after being processed by a back projector 30, the picture is displayed 8 as the picture data f(x,y), and at the same time, is stored in a file 9.
JP62191895A 1987-07-30 1987-07-30 Method for reconstituting pseudo parallel Pending JPS6435667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62191895A JPS6435667A (en) 1987-07-30 1987-07-30 Method for reconstituting pseudo parallel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62191895A JPS6435667A (en) 1987-07-30 1987-07-30 Method for reconstituting pseudo parallel

Publications (1)

Publication Number Publication Date
JPS6435667A true JPS6435667A (en) 1989-02-06

Family

ID=16282233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62191895A Pending JPS6435667A (en) 1987-07-30 1987-07-30 Method for reconstituting pseudo parallel

Country Status (1)

Country Link
JP (1) JPS6435667A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004121836A (en) * 2002-09-09 2004-04-22 Toshiba Corp Computed tomographic equipment and program
JP2010169481A (en) * 2009-01-21 2010-08-05 Toshiba Corp Spect projection data generation method, device therefor, and fan beam spect processing device
JP2012527287A (en) * 2009-05-18 2012-11-08 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 Fan-shaped parallel beam rebinning without interpolation
JP2015119901A (en) * 2013-12-25 2015-07-02 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Image generation device, radiation tomography apparatus and program

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004121836A (en) * 2002-09-09 2004-04-22 Toshiba Corp Computed tomographic equipment and program
JP2010169481A (en) * 2009-01-21 2010-08-05 Toshiba Corp Spect projection data generation method, device therefor, and fan beam spect processing device
JP2012527287A (en) * 2009-05-18 2012-11-08 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 Fan-shaped parallel beam rebinning without interpolation
JP2015119901A (en) * 2013-12-25 2015-07-02 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Image generation device, radiation tomography apparatus and program

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