Techniques and errors in scintigraphic measurements of gastric emptying. [/sup 99m/Tc and /sup 113m/In tracer techniques]

Journal Article · Wed Mar 01 00:00:00 EST 1978 · J. Nucl. Med.; (United States)

OSTI ID:5090677

Tothill, P; McLoughlin, G P; Heading, R C

For the monitoring of gastric emptying, a gamma camera or scanner operating from one side of the patient is subject to variations of counting efficiency due to the changing depth of radioactivity. A double-headed scanner was used to investigate the effects of such changes. Tc-99m and In-113m were used as labels for the solid and liquid components of a meal. It was found that the depth of Tc-99m within the stomach decreased by a mean of 13 mm during the first half hour of emptying. Anterior detection alone underestimated emptying rates by an average of 26 percent. Depth changes also introduced errors into ''early emptying'' measurements made unilaterally. Such artifacts of measurement may compromise mathematical analyses of emptying patterns.

• Research Organization: Royal Infirmary, Edinburgh
• OSTI ID: 5090677
• Journal Information: J. Nucl. Med.; (United States), Vol. 19:3
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
INDIUM 113
SCINTISCANNING
STOMACH
PHYSIOLOGY
TECHNETIUM 99
ERRORS
GAMMA CAMERAS
ISOMERIC NUCLEI
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CAMERAS
COUNTING TECHNIQUES
DIAGNOSTIC TECHNIQUES
DIGESTIVE SYSTEM
GASTROINTESTINAL TRACT
HOURS LIVING RADIOISOTOPES
INDIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ORGANS
RADIOISOTOPE SCANNING
RADIOISOTOPES
STABLE ISOTOPES
TECHNETIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
550601* - Medicine- Unsealed Radionuclides in Diagnostics