JPH0423469B2 - - Google Patents
Info
- Publication number
- JPH0423469B2 JPH0423469B2 JP4756981A JP4756981A JPH0423469B2 JP H0423469 B2 JPH0423469 B2 JP H0423469B2 JP 4756981 A JP4756981 A JP 4756981A JP 4756981 A JP4756981 A JP 4756981A JP H0423469 B2 JPH0423469 B2 JP H0423469B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- signal
- average value
- 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.)
- Expired
Links
- 238000012937 correction Methods 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 19
- 238000000605 extraction Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims 1
- 238000002594 fluoroscopy Methods 0.000 description 12
- 238000003745 diagnosis Methods 0.000 description 8
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 8
- 239000002872 contrast media Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 238000004876 x-ray fluorescence Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000002784 stomach Anatomy 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/38—Exposure time
- H05G1/42—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube
- H05G1/44—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube in which the switching instant is determined by measuring the amount of radiation directly
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
- Closed-Circuit Television Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4756981A JPS57162300A (en) | 1981-03-31 | 1981-03-31 | X-ray automatic exposure control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4756981A JPS57162300A (en) | 1981-03-31 | 1981-03-31 | X-ray automatic exposure control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57162300A JPS57162300A (en) | 1982-10-06 |
| JPH0423469B2 true JPH0423469B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-04-22 |
Family
ID=12778858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4756981A Granted JPS57162300A (en) | 1981-03-31 | 1981-03-31 | X-ray automatic exposure control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57162300A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
1981
- 1981-03-31 JP JP4756981A patent/JPS57162300A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57162300A (en) | 1982-10-06 |