High resolution digital radiography system
A digital radiography system includes an x-ray source for projecting a beam of x-rays toward and through an object to be examined onto the input face of an image intensifier tube. A multi-hole collimator is disposed between the object and the image intensifier tube for producing a two-dimensional array of spaced pencil beams, and these pencil beams are raster scanned relative to the object being examined and across the input face of the image intensifier tube through small distances corresponding generally to the distance between the holes in the collimator. The succession of images which are produced on the output face of the image intensifier tube during the scanning of the pencil beams are scanned by a video camera whose output signals are digitized and stored as partial images, and the partial images are thereafter interleaved with one another to provide a composite comparatively high resolution image of the object being examined.
- Assignee:
- American Science and Engineering Inc
- Patent Number(s):
- US 4389729
- OSTI ID:
- 5964347
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BIOMEDICAL RADIOGRAPHY
COLLIMATORS
DATA PROCESSING
DIAGNOSTIC TECHNIQUES
EQUIPMENT
FLUOROSCOPY
IMAGE INTENSIFIERS
IMAGE PROCESSING
INDUSTRIAL RADIOGRAPHY
MEDICINE
NUCLEAR MEDICINE
OPERATION
PROCESSING
RADIATION SOURCES
RADIOLOGY
REAL TIME SYSTEMS
X-RAY EQUIPMENT
X-RAY SOURCES