JPS54121089A - Test device using radiant rays - Google Patents
Test device using radiant raysInfo
- Publication number
- JPS54121089A JPS54121089A JP2822178A JP2822178A JPS54121089A JP S54121089 A JPS54121089 A JP S54121089A JP 2822178 A JP2822178 A JP 2822178A JP 2822178 A JP2822178 A JP 2822178A JP S54121089 A JPS54121089 A JP S54121089A
- Authority
- JP
- Japan
- Prior art keywords
- subject
- detector
- data
- radiant rays
- fan
- 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
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000005855 radiation Effects 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
PURPOSE: To secure an accurate sensitivity correction for the detection system through a simple constitution for the test device which obtains the tomogram iamge of the subject via the transmissible radiant rays by providing the transmission material for correction plus the detaching mechanism.
CONSTITUTION: Radiation source 1 irradiates the fan-shaped radiant rays to subject 3, and detector 6 contains plural units of photo detector 5 to detect each part of fan- shaped beam 2 individually which passed through subject 3. In addition, the following units are added to constitute a test device: the means which turns detector 6 and source 1 in order to turn the radiant rays within the fan-shaped surface and thus to cut subject 3; and A/D converter 11 which recompose the beam data obtained through detector 6 in the form of the picture regarding the absorption destribution of the radiant rays at the cut-off part. Then wedge 7 is inserted into beam 2 along with radiation transmission material 8 and 9 inserted detachably into beam 2 in order to minimize the test width of the readings of detector 6. Thus, the data of material 8 and 9 are collected before collection of the optical data and before or after collection of the data of subject 3, thus obtaining the desired corrected data for each collected data.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2822178A JPS54121089A (en) | 1978-03-14 | 1978-03-14 | Test device using radiant rays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2822178A JPS54121089A (en) | 1978-03-14 | 1978-03-14 | Test device using radiant rays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54121089A true JPS54121089A (en) | 1979-09-19 |
Family
ID=12242556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2822178A Pending JPS54121089A (en) | 1978-03-14 | 1978-03-14 | Test device using radiant rays |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54121089A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787098A (en) * | 1987-04-10 | 1988-11-22 | Kabushiki Kaisha Toshiba | Method for obtaining calibrated tomographic image data to correct for collimator width differences |
| JP2016007546A (en) * | 2014-06-25 | 2016-01-18 | 清華大學 | Ct image calibration method, ct image calibration device and ct system |
-
1978
- 1978-03-14 JP JP2822178A patent/JPS54121089A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787098A (en) * | 1987-04-10 | 1988-11-22 | Kabushiki Kaisha Toshiba | Method for obtaining calibrated tomographic image data to correct for collimator width differences |
| JP2016007546A (en) * | 2014-06-25 | 2016-01-18 | 清華大學 | Ct image calibration method, ct image calibration device and ct system |
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