The buildup factor: A general scheme for attenuation correction

Conference · Wed May 01 04:00:00 EDT 1985 · J. Nucl. Med.; (United States)

OSTI ID:5935885

Siegel, J A

The authors have developed a genera scheme for generating attenuation-corrected nuclear medicine images for use in absolute volume and activity measurements with Tc-99m. The technique relies on the use of a set of measured buildup factors to correct for the effects of scatter inherent in the broad-beam conditions of clinical nuclear medicine and requires anterior and posterior count-rate measurements. This is the first time that use of the narrow beam ..mu.. can be justified and the method will be compared to techniques ignoring the scatter contribution and to those employing effective attenuation coefficients from 0.01-0.13 cm/sup -1/. The buildup factors for four different scintillation camera window setting and three different source sizes are reported. Phantom studies show that the technique provides less than 7.3% error for volume determinations at all investigated depths, window settings and source sizes, whereas much larger errors were found with the other techniques.

• Research Organization: Temple Univ. Health Sciences Center, Philadelphia, PA
• OSTI ID: 5935885
• Report Number(s): CONF-850611-
• Conference Information: Journal Name: J. Nucl. Med.; (United States) Journal Volume: 26:5
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ATTENUATION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOMEDICAL RADIOGRAPHY
CAMERAS
COUNTING RATES
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
GAMMA CAMERAS
HOURS LIVING RADIOISOTOPES
IMAGE PROCESSING
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEDICINE
NUCLEAR MEDICINE
NUCLEI
ODD-EVEN NUCLEI
PROCESSING
RADIOISOTOPE SCANNING
RADIOISOTOPES
RADIOLOGY
SCINTISCANNING
TECHNETIUM 99
TECHNETIUM ISOTOPES
YEARS LIVING RADIOISOTOPES