کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3982015 1257713 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acute subarachnoid haemorrhage: Is a negative CT angiogram enough?
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی تومور شناسی
پیش نمایش صفحه اول مقاله
Acute subarachnoid haemorrhage: Is a negative CT angiogram enough?
چکیده انگلیسی

AimTo determine the negative predictive value of 16 channel multisection computed tomography angiography (CTA) for detecting aneurysms in spontaneous subarachnoid haemorrhage (SAH), using digital subtraction angiography (DSA) as the reference standard.Materials and methodsThe prospectively collected cerebral angiogram database of Department of Neuroradiology, Atkinson Morley Regional Neuroscience Centre was used to identify 200 consecutive patients who had undergone DSA for SAH. Of these, 176 had undergone CTA prior to DSA. Clinical details and radiology reports were correlated and images of positive investigations reviewed.ResultsDSA showed one or more cerebral aneurysms in 105 (60%) patients. These were correctly reported on CTA in 100. CTA was reported negative for aneurysms in 74 patients. Of these five were false negative and had aneurysms detected on DSA. In the CTA/DSA negative group, 11 (16%) patients had classical perimesencephalic clinical syndrome and blood distribution. There were two false positives at CTA. For ruptured cerebral aneurysms, CTA had 95.2% sensitivity, 97.2% specificity, 98.1% positive predictive value, and 93.2% negative predictive value.ConclusionThe sensitivity and negative predictive value of CTA for ruptured aneurysms remains imperfect. Continued use of DSA is recommended in most patients with a negative CTA after acute SAH. Confirmation of a negative CTA result with DSA may not be routinely required in patients with perimesencephalic syndrome.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Radiology - Volume 68, Issue 3, March 2013, Pages 232–238
نویسندگان
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