Buildup factor: effect of scatter on absolute volume determination

Journal Article · Mon Apr 01 04:00:00 EST 1985 · J. Nucl. Med.; (United States)

OSTI ID:5709703

Siegel, J A; Wu, R K; Maurer, A H

The authors have developed a new method for generating attenuation-corrected images for use in absolute volume and activity measurements. 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. The buildup factors for four different scintillation camera window settings and three different sources sizes are reported. The method was validated by calculating phantom volumes and comparing the results to a previously reported technique which does not account for the scatter contribution. The results showed that the buildup factor method provides less than 7.3% error for volume determinations at all investigated depths, window settings, and source sizes, whereas errors of 3.3-26.7% were found with the other technique.

• Research Organization: Temple Univ. Hospital, Philadelphia, PA
• OSTI ID: 5709703
• Journal Information: J. Nucl. Med.; (United States), Journal Name: J. Nucl. Med.; (United States) Vol. 26:4; ISSN JNMEA
• Country of Publication: United States
• Language: English

Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
61 RADIATION PROTECTION AND DOSIMETRY
62 RADIOLOGY AND NUCLEAR MEDICINE
655003 -- Medical Physics-- Dosimetry
ATTENUATION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BUILDUP
CALCULATION METHODS
CAMERAS
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
GAMMA CAMERAS
HOURS LIVING RADIOISOTOPES
HYDROGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MOCKUP
NUCLEI
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PERTECHNETATES
PHANTOMS
RADIOISOTOPE SCANNING
RADIOISOTOPES
REFRACTORY METAL COMPOUNDS
SCATTERING
SCINTISCANNING
STRUCTURAL MODELS
TECHNETIUM 99
TECHNETIUM COMPOUNDS
TECHNETIUM ISOTOPES
TRANSITION ELEMENT COMPOUNDS
VOLUME
WATER
YEARS LIVING RADIOISOTOPES