Citation

Fleckenstein JL, Chason DP, Bonte FJ, Parkey RW, Hunt JL, Purdue GF, Burns DK. Radiology 1995; 195(1): 205-210.

Affiliation

Department of Radiology, University of Texas Southwestern Medical Center, Dallas 75235-8896.

Copyright

(Copyright © 1995, Radiological Society of North America)

DOI

unavailable

PMID

7892470

Abstract

PURPOSE: To evaluate use of magnetic resonance (MR) imaging and technetium-99m pyrophosphate (PYP) scintigraphy in preoperative assessment of muscle viability after high-voltage electric injury. MATERIALS AND METHODS: Twelve injured limbs were studied. Immediate, equilibrium, and delayed Tc-99m PYP scintigrams and gadolinium-enhanced and unenhanced MR images were obtained. Imaging results were compared with clinical findings. RESULTS: Scintigraphy demonstrated nonperfusion in four limbs that were subsequently amputated, but MR imaging had poor sensitivity in nonperfused regions owing to lack of edema. Tc-99m PYP uptake increased at transition zones between normal and nonperfused regions. MR imaging allowed further characterization of these zones by demonstrating edema as enhancing (perfused) or nonenhancing (nonperfused). In all nonamputated limbs, edema showed enhancement. CONCLUSION: In high-voltage electric injury, gadolinium-enhanced MR imaging appears able to demonstrate zones of potential viability within radionuclide-avid tissue but has poor perfusion sensitivity when used alone.

Language: en