Tomographic imaging system

Patent · Tue Jul 08 04:00:00 EDT 1980

OSTI ID:6810471

Hayakawa, T; Kohno, H; Nakaya, C; Sekihara, K; Shiono, H; Tomura, T; Yamamoto, S

A tomographic imaging system comprising: generating means for generating penetrating radiation toward an object under investigation; detecting means including an array of radiation sensitive detectors for detecting the radiation from said generating means transmitted through the object and for providing an output indicative thereof, said detecting means including at least one side of said detector array of radiation sensitive detectors, a checking detector being responsive to the radiation generated by said generating means which normally does not pass through the object under investigation for checking whether the object is positioned within a field of view of said detector array of radiation sensitive detectors, said checking detector providing an output indicative of the radiation generated which normally does not pass through the object; means for comparing the output of said checking detector with a predetermined value for determining whether the object is positioned within the field of view of said detector array; means for rotating said generating menas and said detecting means while keeping a predetermined relative relationship in position with respect to each other; and means for processing the output form said detector array to produce a tomographic image of the object.

• Assignee: Hitachi Medical Corp Japan
• Patent Number(s): US 4211926
• OSTI ID: 6810471
• Country of Publication: United States
• Language: English

Related Subjects

440105* -- Radiation Instrumentation-- Radiometric Instruments-- (-1987)
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
550602 -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
CHEMICAL ANALYSIS
DIAGNOSTIC TECHNIQUES
IMAGE PROCESSING
MEASURING INSTRUMENTS
MOTION
NONDESTRUCTIVE ANALYSIS
PROCESSING
RADIATION ABSORPTION ANALYSIS
RADIATION DETECTORS
RADIATION SOURCES
ROTATION
TOMOGRAPHY