Duodenal perforation by a biliary endoprosthesis: evaluation by hepatobiliary scintigraphy.
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Aged↗
Biomedical subjects
D M Achong
Publications and source records attributed to D M Achong.
False-negative morphine-augmented cholescintigraphy: a case of subacute gallbladder perforation.
The gallbladder and an infected pericholecystic biloma secondary to subacute perforation were visualized during morphine-augmented cholescintigraphy. Perforation of the gallbladder may relieve cystic duct obstruction and contribute to false-negative visualization in the setting of acute cholecystitis.
Aniline Compounds↗
The cystic duct sign during morphine-augmented cholescintigraphy.
Visualization of a "dilated cystic duct" during standard hepatobiliary imaging represents a potential source of false-negative cholescintigraphy. Intravenous morphine, commonly used to shorten study time and improve the specificity of hepatobiliary imaging, may, by virtue of its pharmacologic/physiologic actions, accentuate the appearance of a "dilated cystic duct." We present a case of transient cystic duct visualization following morphine administration in a patient with an obstructing cystic duct calculus.
Adult↗
Quantitation of differential renal function with Tc-99m MDP.
This study was designed to evaluate the usefulness of the bone tracer Tc-99m MDP for quantitative assessment of relative renal function as compared with renal imaging radiotracers used for that purpose. Differential renal function, i.e., the percent contribution each kidney makes to global renal function, was determined prospectively in 15 consecutive patients using Tc-99m MDP and a renal radionuclide tracer, either Tc-99m DTPA or Tc-99m GHA. Differential function was computed in all cases from the early (1-3 minutes) renal uptake of the tracers by region-of-interest analysis of the computer-acquired data. There was a high correlation between values of differential function obtained with Tc-99m MDP and those obtained with Tc-99m DTPA or Tc-99m GHA (r = 0.98, P less than 0.0001). Qualitative assessment of the images revealed equivalent scintigraphic patterns in all patients. It is concluded that the early characteristics of renal handling of Tc-MDP are sufficiently similar to those of Tc-DTPA and Tc-GHA so that accurate estimates of differential renal function are possible with this agent, and that Tc-MDP-determined renal differential most likely reflects differential glomerular filtration rate.
Aged↗
Demonstration of increased bone metabolism in melorheostosis by multiphase bone scanning.
The multiphase bone scan features of melorheostosis are presented. Early increased tracer delivery demonstrated by blood pool imaging supports the concept of ongoing accelerated bony metabolism as a cause of tracer uptake within the osteosclerotic lesions of melorheostosis. There is excellent correlation between the scintigraphic and radiographic distribution of these lesions.
Adult↗
Gallbladder visualization during post-therapy iodine-131 imaging of thyroid carcinoma.
A persistent, extra-thyroidal focus of 131I on whole-body imaging of thyroid carcinoma usually represents a functioning metastasis. We report a case of 131I localization within a septated gallbladder, initially mimicking an isolated hepatic metastasis. Adjunctive liver/spleen and hepatobiliary scintigraphy helped to elucidate the true nature of this 131I activity.
Adenocarcinoma↗
Skeletal angiomatosis limited to the hand: radiographic and scintigraphic correlation.
Three-phase bone scintigraphy elegantly demonstrates the vascular nature of the expansile, lytic lesions of skeletal angiomatosis and the induced bony changes in the involved areas. Unusual features of the case include its confinement to the hand and rapid progression as shown by serial radiographs.
Adolescent↗