Bone Subtraction 3-Dimension CT Angiography Using 64-Slice Multidetector CT for the Evaluation of Steno-Occlusive Intra- and Extracranial Vascular Diseases: Comparison with Digital Subtraction Angiography

CT angiography (CTA) is a noninvasive imaging method to detect arterial stenosis, cerebral aneurysm, and other vascular abnormalities. With the development of multidetector CT (MDCT) technology, the scan range and diagnostic accuracy of CTA has increased. But there are some limitations for the evaluation of intraand extracranial vascular diseases with conventional CTA technique. Separating vessels from the bone or perivascular calcifications can be difficult, particularly in areas such as the skull base (1). This limitation can be a barrier to its use in clinical practice. A further difficulty is that three dimenOriginal Article