System for circular and complex tomography

Patent · Tue Feb 13 04:00:00 EST 1979

OSTI ID:5851948

Hellstrom, M J

This invention discloses a system for conducting circular as well as complex tomographic procedures utilizing apparatus which has no mechanical linkage between the X-ray source and the X-ray receptor. The path of travel of the X-ray source both circularly and linearly is sensed by electromagnetic radiation and more particularly by light radiation which is generated by a laser. The linear travel is sensed by means of reflected laser radiation directed to the X-ray source and fed to an interferometer. The circular travel, on the other hand, is sensed by means of a laser gyroscope also receiving light radiation from a laser. Optical energy sensing means is thus used to generate command signals which are coupled to respective drive motors which act to rotate and when desirable, translate the X-ray receptor so that its motion follows the motion, both orbital and linear, of the X-ray source for performing any desired type of tomographic procedure.

• Assignee: CGR Medical Corp.
• Patent Number(s): US 4139776
• OSTI ID: 5851948
• Country of Publication: United States
• Language: English

Related Subjects

550600 -- Medicine
560151* -- Radiation Effects on Animals-- Man
62 RADIOLOGY AND NUCLEAR MEDICINE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CONTROL SYSTEMS
DESIGN
ELECTROMAGNETIC RADIATION
GYROSCOPES
INTERFEROMETERS
LASER RADIATION
MEASURING INSTRUMENTS
RADIATION SOURCES
RADIATIONS
TOMOGRAPHY
X-RAY EQUIPMENT
X-RAY SOURCES