造影剤タイミングモニタリング機能(Smart Prep^【○!R】法)を使用した造影三次元MR angiographyの有用性

概要

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The Smart Prep technique for gadolinium-enhanced three-dimensional MRangiography(3D-MRA) was evaluated in clinical practice. By monitoring signal intensity in the region of interest(tracking volume)in the target vessel, start timing after contrast injection can be optimized using the Smart Prep technique. Successful triggering was obtained in the chest, abdomen, and pelvic areas in about 80% of the cases in this study. Failures with this technique were mainly due to changes in tracking volume caused by patient motion and respiration. We noted that the scan started earlier than expected in the thoracic aorta when part of the heart or pulmonary artery was included in the tracking volume. Thus, care must be taken in defining the size and location of the tracking volume in gadolinium-enhanced 3D-MRA using the Smart Prep technique.
公益社団法人日本放射線技術学会の論文
1998-09-20