JPS6435667A - Method for reconstituting pseudo parallel - Google Patents
Method for reconstituting pseudo parallelInfo
- 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
Links
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000006866 deterioration Effects 0.000 abstract 1
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.
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)
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 |
-
1987
- 1987-07-30 JP JP62191895A patent/JPS6435667A/en active Pending
Cited By (4)
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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