JPS61174908U - - Google Patents
Info
- Publication number
- JPS61174908U JPS61174908U JP6059885U JP6059885U JPS61174908U JP S61174908 U JPS61174908 U JP S61174908U JP 6059885 U JP6059885 U JP 6059885U JP 6059885 U JP6059885 U JP 6059885U JP S61174908 U JPS61174908 U JP S61174908U
- Authority
- JP
- Japan
- Prior art keywords
- projection data
- subject
- wall
- image
- enlarging
- 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
- 238000003325 tomography Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
- Image Processing (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Description
第1図はこの考案の一実施例のブロツク図、第
2図A,Bは被写体外壁を検出する動作を説明す
るための模式図、第3図は被写体に対する投影デ
ータの関係およびそれを拡大して逆投影すること
を説明するための模式図、第4図は従来例の模式
図、第5図A,Bは従来における画像再構成領域
に対する被写体像の大小関係を示す図である。
1……撮影領域、2……被写体、3……X線管
、4……検出器、5……データ収集装置、6……
CPU、7……メモリ、8……画像再構成装置、
9……表示装置、10……データ拡大装置、11
……投光器、12……受光器、21……被写体像
、31……画像再構成領域。
Figure 1 is a block diagram of an embodiment of this invention, Figures 2A and B are schematic diagrams for explaining the operation of detecting the outer wall of the object, and Figure 3 shows the relationship of projection data to the object and an enlarged view of it. FIG. 4 is a schematic diagram of a conventional example, and FIGS. 5A and 5B are diagrams showing the size relationship of a subject image with respect to an image reconstruction area in the conventional technique. 1... Imaging area, 2... Subject, 3... X-ray tube, 4... Detector, 5... Data collection device, 6...
CPU, 7...Memory, 8...Image reconstruction device,
9...Display device, 10...Data enlarging device, 11
... Emitter, 12 ... Light receiver, 21 ... Subject image, 31 ... Image reconstruction area.
Claims (1)
の外壁を測定する手段と、求められた外壁の大き
さに応じて上記投影データの位置成分を拡大する
手段と、拡大された投影データから画像を再構成
する手段とからなるコンピユータ断層撮影装置。 means for collecting projection data of a subject; means for measuring an outer wall of the subject; means for enlarging the positional component of the projection data according to the determined size of the outer wall; and reproducing an image from the enlarged projection data. A computerized tomography apparatus comprising means for configuring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6059885U JPS61174908U (en) | 1985-04-22 | 1985-04-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6059885U JPS61174908U (en) | 1985-04-22 | 1985-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61174908U true JPS61174908U (en) | 1986-10-31 |
Family
ID=30588095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6059885U Pending JPS61174908U (en) | 1985-04-22 | 1985-04-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61174908U (en) |
-
1985
- 1985-04-22 JP JP6059885U patent/JPS61174908U/ja active Pending
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