"NB: This article is intended to outline some general principles of protocol design. The specifics will vary depending on CT hardware and software, radiologists' and referrers' preference, institutional protocols, patient factors (e.g. allergy) and time constraints."
"NB: This article is intended to outline some general principles of protocol design. The specifics will vary depending on CT hardware and software, radiologists' and referrers' preference, institutional protocols, patient factors (e.g. allergy) and time constraints."
"Additional post processing may include maximum intensity projections, curved reformats, and shaded surface display volume rendering (SS-VRT)."
Expected headings
"Purpose"
"Postprocessing"
"CT angiography of the circle of Willis (CTA COW) is a technique that allows visualisation of the intracranial arteries; specifically the circle of Willis. While digital subtraction angiography (DSA) remains the gold standard for the diagnosis of intracranial aneurysms especially, CTA is a less invasive, cost-effective, and more widely available technique 1."
"The purpose of a CTA COW is to achieve maximum opacification of the circle of Willis in order to identify vascular structure abnormalities or bleeding subarachnoid vessels. Ideally, there should be minimal contrast within the dural venous sinuses; such an instance indicates that the timing is somewhat late."