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  • Title: [Studies on renal damages after extracorporeal shock wave lithotripsy using Gd-DTPA-enhanced dynamic MRI].
    Author: Umekawa T, Kohri K, Iguchi M, Kurita T.
    Journal: Nihon Hinyokika Gakkai Zasshi; 1991 Nov; 82(11):1776-80. PubMed ID: 1762267.
    Abstract:
    Renal damages after ESWL treatment were examined by Gd-DTPA enhanced dynamic MRI. Gd-DTPA was used as the contrast medium and fast magnetic resonance imaging with suspended respiration using the flip angle of 20 degrees and gradient echo technique at 0.5 Tesla was used for photographing. In normal kidneys, a low intensity band was observed with the passage of Gd-DTPA through the kidney from 1 to 2 minutes after the injection. In patients who underwent ESWL treatment, however, the low intensity band which was observed before ESWL treatment became partly obscure after ESWL treatment. Furthermore, these find changes in the renal parenchyma could not be fully detected by usual MRI which does not use Gd-DTPA. Gd-DTPA enhanced dynamic MRI was considered to be effective for finding the limited dose of shock waves for ESWL treatment.
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