Initial 320-detector row coronary CT images have consistently excellent quality and iodinated contrast opacification. These patients were scanned with conservative protocols with respect to iodine load, prospective ECG-gating phase window, and craniocaudal coverage. Future work will focus on lowering contrast and radiation dose while maintaining image quality.
Contrast-enhanced 3D MRA using provocative arm positioning allows excellent imaging of the arteries and veins on both sides and thus provides a noninvasive imaging alternative to digital subtraction angiography in patients with suspected vascular TOS. Contrast-enhanced 3D MRA is also an ideal imaging modality for postsurgical follow-up for identifying restenosis or residual vascular compression. However, all imaging studies, including the contrast-enhanced 3D MRA protocol described here, should be treated as complementary tests for the diagnosis of TOS.
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