Title:
【発明の名称】コンピュータ断層撮影装置
Document Type and Number:
Japanese Patent JP2772289
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a computerized tomograph which continuously provides a tomograph image from projection data provided from a continuous rotation scan without any artifact at almost real time. SOLUTION: The circumference of a subject 2 is continuously scanned, while exposing X-ray toward the subject 2 from an X-ray source 1. After the X-ray passing through the subject 2 is detected by a detector 3 and projection data at every pitch is collected by a multiplexer 11 and an A/D converter 12 in a DAS 4, it is sent to an angle inercia part. Then a computer 6a inversely projects projection data (P) in an arbitrary rotation angle θ, and the inverse projection data BP is obtained so as to set an inverse projection (Q). Secondary, the projection data (P) in a rotational angle formed by adding an angle by Δαto the angle θ is inversely projected and it is added to the inverse projection data (Q) obtained before so as to provide a new inverse projection data (Q). Such an adding processing is repeated on the projection data of the angle (Q) 0 deg.-360 deg., a memory 6b stores images of respective parts, and a TV monitor 7 displays it at real time.
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Inventors:
OZAKI MASAHIRO
Application Number:
JP27830296A
Publication Date:
July 02, 1998
Filing Date:
October 21, 1996
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
A61B6/03; (IPC1-7): A61B6/03
Domestic Patent References:
| JP123136B2 |
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)