Journal of vascular and interventional radiology : JVIR
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J Vasc Interv Radiol · Aug 2005
The effect of catheter-directed CT angiography on yttrium-90 radioembolization treatment of hepatocellular carcinoma.
Yttrium 90 radioembolization is a transcatheter therapy for unresectable hepatocellular carcinoma (HCC) that delivers internal radiation to tumors. In contrast to the usual method of lobar regional delivery, catheter-directed computed tomographic (CT) angiography was investigated as a potentially useful technique to evaluate the administration of segmental 90Y tumor radiation doses superselectively without significantly altering liver function or Child-Pugh classification. ⋯ CT angiography can be used to delineate the blood supply and volume to a targeted hepatic segment, allowing superselective 90Y radioembolization. This approach significantly increases effective 90Y tumor radiation dose without clinically altering liver function or Child-Pugh class.
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The authors believe that ultrasound as a primary method of image guidance for performing hip aspirations is underutilized, and the authors report their experience in performing ultrasound-guided hip injections in 358 patients, using a free-hand technique. ⋯ To the authors' knowledge, this is the largest reported series of sonographically-guided adult hip aspirations/injections without the use of a needle guide. The authors believe that ultrasound as a primary method of image guidance for performing hip aspirations is underutilized. The absence of radiation and relatively short procedure time of ultrasound-guided hip injections are favorable factors to both the authors' referring clinician population as well as the patients.