Abstract #1455

Improvement of visualization of intracranial blood vessel uniformity on MR angiography using a Silent scan

Yasuhiro Fujiwara¹ and Yoshiyuki Muranaka²

¹Department of Medical Imaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan, ²Radiological Center, Fukui Prefectural Hospital, Fukui, Japan

We evaluated the uniformity of the intracranial vascular signal using a Silent MR angiography (MRA). Experiments with phantoms and healthy subjects revealed that this sequence improved the uniformity of the vascular signal under the condition of complex flow. Silent MRA improved contrast, coefficient of variation, and accuracy for intracranial blood vessels with turbulent flow compared with time-of-flight MRA. The signal intensities obtained by Silent MRA were independent of flow conditions. Although it has limited spatial resolution and requires additional imaging time, this sequence may have the potential to improve the image quality of intracranial blood vessels.

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