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Significance of radiocontaminants in /sup 123/I for dosimetry and scintillation camera imaging. [/sup 131/I, /sup 122/Te, /sup 124/Te, /sup 127/I, /sup 123/Xe]

Journal Article · · J. Nucl. Med.; (United States)
OSTI ID:7263554
; ; ;

Estimates of absorbed radiation dose and qualitative assessments of image resolution were compared for pure /sup 131/I and for /sup 123/I produced by the /sup 122/Te(d,n), /sup 124/Te(p,2n), and /sup 127/I(p,5n)/sup 123/Xe reactions. A substantial reduction in radiation dose is indicated when /sup 123/I replaces /sup 131/I, in spite of the radiocontaminants typically present 30 to 35 hr after the production of /sup 123/I by any of these methods. Only a marginal further reduction in radiation dose was noted with use of the most ''pure'' /sup 123/I as opposed to the least ''pure'' /sup 123/I. Comparable scintillation camera resolution was obtained for all /sup 123/I preparations at 30 to 35 hr after bombardment when the medium-energy and pinhole collimators were used. However, the radiocontaminants in the /sup 123/I produced from tellurium affected image resolution when the low-energy collimator was used.

Research Organization:
Medi-Physics, Inc., Emeryville, CA
OSTI ID:
7263554
Journal Information:
J. Nucl. Med.; (United States), Journal Name: J. Nucl. Med.; (United States) Vol. 17:8; ISSN JNMEA
Country of Publication:
United States
Language:
English

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Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CAMERAS
COLLIMATORS
CONTAMINATION
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
DOSES
DOSIMETRY
ELECTRON CAPTURE RADIOISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
IMAGES
INTERMEDIATE MASS NUCLEI
IODINE 123
IODINE 127
IODINE 131
IODINE ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
MOCKUP
NUCLEI
ODD-EVEN NUCLEI
PHANTOMS
RADIATION DOSES
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
STABLE ISOTOPES
STRUCTURAL MODELS
TELLURIUM 122
TELLURIUM 124
TELLURIUM ISOTOPES
TRACER TECHNIQUES
XENON 123
XENON ISOTOPES