Measurement of scatter in x-ray imaging

Patent · Tue Feb 23 04:00:00 EST 1988

OSTI ID:5004712

Belanger, B F

In a medical diagnosis x-ray imaging system with scatter radiation effects, the system is described having an x-ray source transmitting a collimated beam through a first object for producing a first intensity image onto an image detector, a method for calibrating the first intensity image by measuring a scatter radiation intensity image comprising the steps of: (A) positioning second objects in the collimated beam to attenuate corresponding dispersed areas of the beam to produce a second intensity image on the image detector, the attenuation of each of the second objects being less than 100 percent in the x-ray frequency spectrum; (B) replacing second objects with a uniform sheet of material of identical composition and areal density as the second objects to produce a third image intensity onto the image detector; (C) generating the scatter radiation intensity image from the first, second and third intensity images; and (D) subtracting the scatter radiation intensity image from the first intensity image to remove any scattering effects in order to calibrate the first intensity image.

• Assignee: General Electric Co., Milwaukee, WI
• Patent Number(s): US 4727562
• OSTI ID: 5004712
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
550602 -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
BIOMEDICAL RADIOGRAPHY
CALIBRATION
DETECTION
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
EQUIPMENT
IMAGE PROCESSING
IMAGE SCANNERS
IONIZING RADIATIONS
MEDICINE
NUCLEAR MEDICINE
PROCESSING
RADIATION DETECTION
RADIATION SOURCES
RADIATIONS
RADIOLOGY
SCATTERING
X RADIATION
X-RAY DETECTION
X-RAY EQUIPMENT
X-RAY SOURCES