Title of article :
64-Multidetector Row CT Angiography (64-MDCTA) in Diagnosis of Intracranial Aneurysms in Acute Subarachnoid Hemorrhage: Comparative Study with Digital SubtractionAngiography (DSA)
Author/Authors :
ABDULGHAFFAR, WAEL Mansoura University - Faculty of Medicine - Department of Medical Imaging, Egypt , FOUDA, MONTASAR Zagazig University - Neurosurgery Department, Egypt
From page :
65
To page :
70
Abstract :
Objective: The aim of this study was to compare 64- multidetector row CT angiography (64-MDCTA) with digital subtraction angiography (DSA) in diagnosis of intracranial aneurysms in cases of acute subarachnoid hemorrhage. Materials and Methods: Our study included 50 patients 33 women and 17 men who undergone imaging on a 64- MDCT scanner (Light Speed VCT; GE Healthcare). The CTA was done using the following parameters; collimation 64 x 0.625mm; rotation time 0.350ms; pitch 0.531 in a caudocranial scan direction; tube voltage 120 kVp, tube current 350 mA, matrix of 512x512, field of view 18- 22cm, section thickness 1.25mm and reconstruction interval 0.625mm (50% overlapping). For post-processing, the reconstructed images were used to produce; Maximum intensity projection (MIP) reformats in axial, sagittal and coronal planes, 3-D Maximum intensity projection (MIP), and 3D volume rendered (VR) model. Digital subtraction angiography (DSA) was done in all cases. Resuks: Out of 50 patients included in our study, 12 (24%) patients had negative study on CTA and DSA. A total 40 aneurysms had been identified on DSA (two patients had two aneurysms) in 38 patients and 38 aneurysms (95%) had been detected on CTA with two missed aneurysms on CTA (5%). Most of CTA-identified aneurysms (28 aneurysms=70%) were located within the anterior cerebral circulation and the remaining 10 aneurysms (25%) were located in posterior cerebral circulation. The sensitivity of MDCTA in detection of aneurysms in our study was 95%, the specificity was 100% and the total accuracy of about 96.2%. Conclusion: 64-MDCTA is an accurate method in the diagnosis of intracranial aneurysms in acute spontaneous subarachnoid hemorrhage and can be used as an alternative method to DSA.
Keywords :
Row CT angiography , Digital subtraction , angiography (DSA).
Journal title :
The Medical Journal of Cairo University
Journal title :
The Medical Journal of Cairo University
Record number :
2540808
Link To Document :
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