BACKGROUND AND PURPOSE Many cases of subarachnoid hemorrhage are due to rupture of small cerebral aneurysms. Our purpose was to evaluate the usefulness of helical CT angiography (CTA) in the detection and characterization of very small (<5 mm) intracranial aneurysms. METHODS One hundred eighty consecutive patients underwent CTA for suspected intracranial aneurysms. All aneurysms prospectively...

In vivo measurements of perfusion present a challenge to existing small animal imaging techniques such as magnetic resonance microscopy, micro computed tomography, micro positron emission tomography, and microSPECT, due to combined requirements for high spatial and temporal resolution. We demonstrate the use of tomographic digital subtraction angiography (TDSA) for estimation of perfusion in sm...

BACKGROUND AND PURPOSE A substantial percentage of coiled aneurysms are associated with persistent filling of an aneurysmal component due to incomplete initial treatment or re-growth. Traditionally follow-up of coiled aneurysms has consisted of repeated intra-arterial cerebral catheter angiography, an invasive procedure with associated risks. Hence, many authors have advocated the use of non-in...

AIMS The purpose of this study was to assess the clinical value of indocyanine green angiography (ICG) in intracranial aneurysm surgery by comparing the findings with postoperative angiographic results. MATERIALS AND METHODS One hundred and twenty patients with 148 intracranial aneurysms were included. ICG angiography was performed before and/or after the aneurysm clipping. A near-infrared ex...

Introduction. 3D Rotational Angiography (RA) is indispensable for evaluation of intracranial aneurysms, providing infinite viewing angles and defining the aneurysm morphology. Its role in follow-up of clipped aneurysms remains unclear. We aimed to compare the aneurysm residue/recurrence detection rate of 3D RA with 2D digital subtraction angiography (DSA). Methods. 47 patients harboring 54 clip...

The purpose of our study was to compare findings of 64 detector cranial computed tomographic angiography (CTA) and conventional digital subtraction angiography (DSA) mainly in patients with acute subarachnoid hemorrhage (SAH) headache and diplopia. Between March 2007 and May 2009, 65 consecutive patients were admitted with clinical symptoms and signs of intracranial aneurysm. 44 of 67 detected ...

BACKGROUND AND PURPOSE The aim of this study was to compare diagnostic performance and reproducibility of 3 different methods of quantifying stenosis on contrast-enhanced magnetic resonance angiography (CEMRA), with intra-arterial digital subtraction angiography (DSA) as the reference standard. METHODS 167 symptomatic patients scheduled for DSA, after screening Doppler ultrasound, were prospe...

OBJECTIVE To compare magnetic resonance angiography (MRA) with Intra-arterial digital subtraction angiography (IA-DSA) in detection and characterization of intracranial aneurysms. STUDY DESIGN Comparative cross-sectional study. PLACE AND DURATION OF STUDY Department of Diagnostic Imaging, Lahore General Hospital, Lahore, from January to June 2007. METHODOLOGY Thirty patients presented wit...