Monte Carlo studies of x-ray scattering in transmission diagnostic radiology

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Med. Phys.; (United States)

DOI:https://doi.org/10.1118/1.595855· OSTI ID:5689376

Barnea, G; Dick, C E

Monte Carlo methods have been used to simulate the scattering of x rays in polystyrene and water phantoms. In particular, the ratio of the scattered to total x-ray fluence (scatter fraction) has been calculated for monoenergetic x-ray beams in the energy region relevant to diagnostic radiology and nuclear medicine (30--660 keV). Simulations have been made for representative values of the pertinent geometrical factors; phantom thickness from 5 to 21 cm, x-ray beam diameters of 10 and 25 cm, and scatterer-to-image-plane separations from 0 to 20 cm. As a function of x-ray energy, the scatter fraction was found to vary slowly between 30 and 100 keV, and to decrease between 100 and 660 keV. The present results were generated with a special transport code which included the effects of special geometries and the response of the x-ray detector. With the inclusion of these effects, the results resolved inconsistencies and showed good agreement with previous measured and calculated data.

• Research Organization: Center for Radiation Research, National Bureau of Standards, Gaithersburg, Maryland 20899
• OSTI ID: 5689376
• Journal Information: Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 13:4; ISSN MPHYA
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
BIOMEDICAL RADIOGRAPHY
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
HYDROGEN COMPOUNDS
IMAGE PROCESSING
INDUSTRIAL RADIOGRAPHY
IONIZING RADIATIONS
MATERIALS
MEDICINE
MOCKUP
MONTE CARLO METHOD
NUCLEAR MEDICINE
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHANTOMS
PLASTICS
POLYMERS
POLYOLEFINS
POLYSTYRENE
POLYVINYLS
PROCESSING
RADIATIONS
RADIOLOGY
SCATTERING
STRUCTURAL MODELS
SYNTHETIC MATERIALS
WATER
X RADIATION
X-RAY RADIOGRAPHY