Shunts for portal hypertension: MR and angiography for determination of patency.
- 1 January 1986
- journal article
- research article
- Published by Radiological Society of North America (RSNA) in Radiology
- Vol. 158 (1), 57-61
- https://doi.org/10.1148/radiology.158.1.3940398
Abstract
Twenty-eight patients with selective and nonselective shunts for portal hypertension were evaluated using magnetic resonance (MR) imaging. Angiograhic correlation was obtained in 25 patients. MR imaging enabled the detection of a patent shunt by visualizing the "flow void" phenomenon in 21 patients. Two patients had thrombosed shunts. In these 23 patients, there was no discrepency between the findings from MR imaging and those from angiography. In the remaining five patients, there was an area of artifact in which no signal was noted, and the shunt could not be evaluated. In all five patients who had this artifact, steel coils were noted in the area of the phenomenon. Thus, MR imaging seems to be an accurate method for detecting shunt patency in all patients with shunts except those who have had prior embolization with steel coils.This publication has 7 references indexed in Scilit:
- Magnetic resonance imaging in the diagnosis and staging of renal and perirenal neoplasms.Radiology, 1985
- Verification and evaluation of internal flow and motion. True magnetic resonance imaging by the phase gradient modulation method.Radiology, 1985
- The appearance of rapidly flowing blood on magnetic resonance imagesAmerican Journal of Roentgenology, 1984
- Chronic liver disease: evaluation by magnetic resonance.Radiology, 1984
- Potential hazards and artifacts of ferromagnetic and nonferromagnetic surgical and dental materials and devices in nuclear magnetic resonance imaging.Radiology, 1983
- Nuclear magnetic resonance imaging of the kidney.Radiology, 1983
- Potential hazards in NMR imaging: heating effects of changing magnetic fields and RF fields on small metallic implantsAmerican Journal of Roentgenology, 1981