Portal de Periódicos da CAPES

Liver: Single Breath-hold Dynamic Subtraction CT with Multi–Detector Row Helical Technology—Feasibility Study

2002; Radiological Society of North America; Volume: 222; Issue: 1 Linguagem: Inglês

10.1148/radiol.2221010190

1527-1315

Audrey L. Spielmann, Rendon C. Nelson, Carolyn Lowry, G. Allan Johnson, Gopal Sundaramoothy, Douglas H. Sheafor, Erik K. Paulson,

Advanced MRI Techniques and Applications

Fifty-two patients with known or suspected hypervascular malignancy were examined to determine the technical feasibility of performing single-breath-hold dynamic subtraction computed tomography (CT) of the liver with multi-detector row helical CT. The precontrast and hepatic arterial CT scans, which were acquired during the same breath hold, were subtracted. The mean liver-to-muscle contrast ratio on the precontrast, hepatic arterial, and subtracted images was 1.3, 1.4, and 2.3, respectively. In 13 patients with lesions, the subtracted images showed a 2.5-fold increase in mean lesion contrast compared with the hepatic arterial CT scans.