Installation for producing radiographic layer images

Patent · Tue Nov 06 00:00:00 EST 1984

OSTI ID:6055999

Kinanen, I

The purpose of the invention is to create a mechanically uncomplicated installation for producing radiographic layer images, making it possible to use small radiation dosages and, however, to collect sufficiently information on the object by one exposure, whereby separation of the superimposed layers from each other in a desired way for visualization can be accomplished by means of tomosynthesis. The installation includes radiation generating means collimating means for confining the radiation and focusing it on an object to be radiographed, e.g. a patient, means for detecting the radiation passed through the object and means for storing and processing the information contained in said detection. Said collimating means comprise a collimation unit including at least two separate, narrow, contiguous, substantially parallel collimating slots for producing narrow, fan-shaped beams, said slots being arranged preferably in alignment with the longitudinal axis of the object to be radiographed. The installation also includes means for displacing said collimating slots and the object to be radiographed in relation to each other at least substantially in alignment with the normal of said collimating slots, those parts of the object selected to be radiographed being arranged to be exposed to radiation by said narrow fan-shaped beams from a number of different directions. The information obtained from the object to be radiographed is stored preferably in digital form and processed for visualization.

• Assignee: Instrumentarium Oy (Finland)
• Patent Number(s): US 4481650
• OSTI ID: 6055999
• Resource Relation: Patent Priority Date: Priority date 22 Apr 1982, Finland; Other Information: PAT-APPL-370615
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
BIOMEDICAL RADIOGRAPHY
X-RAY EQUIPMENT
BODY
X-RAY RADIOGRAPHY
COLLIMATORS
DATA PROCESSING
FOCUSING
IMAGE PROCESSING
LAYERS
PATIENTS
RADIATION DETECTORS
RADIATION DOSES
RADIATION SOURCES
RECORDING SYSTEMS
TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
DOSES
EQUIPMENT
INDUSTRIAL RADIOGRAPHY
MEASURING INSTRUMENTS
MEDICINE
NUCLEAR MEDICINE
PROCESSING
RADIOLOGY
550602* - Medicine- External Radiation in Diagnostics- (1980-)