Method and apparatus for producing tomographic images
A device useful in producing a tomographic image of a selected slice of an object to be examined is described comprising: a source of penetrating radiation, sweep means for forming energy from the source into a pencil beam and repeatedly sweeping the pencil beam over a line in space to define a sweep plane, first means for supporting an object to be examined so that the pencil beam intersections the object along a path passing through the object and the selected slice, line collimating means for filtering radiation scattered by the object, the line collimating means having a field of view which intersects and sweep plane in a bounded line so that the line collimating means passes only radiation scattered by elementary volumes of the object lying along the bounded line, and line collimating means including a plurality of channels such substantially planar in form to collectively define the field of view, the channels oriented so that pencil beam sweeps along the bounded line as a function of time, and radiation detector means responsive to radiation passed by the line collimating means.
- Assignee:
- American Science and Engineering, Inc., Cambridge, MA
- Patent Number(s):
- US 4809312
- OSTI ID:
- 6215577
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAM DYNAMICS
COLLIMATORS
DESIGN
DIAGNOSTIC TECHNIQUES
FUNCTIONS
IMAGE SCANNERS
MEASURING INSTRUMENTS
OPERATION
RADIATION DETECTORS
RADIATION SOURCES
RESPONSE FUNCTIONS
TOMOGRAPHY