Filling defect sign in CT diagnosis of ruptured aneurysm |
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Authors: | K. Noguchi T. Ogawa H. Fujita A. Inugami T. Okudera K. Uemura H. Seto |
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Affiliation: | (1) Department of Radiology, Toyama Medical and Pharmaceutical University, 2630, Sugitani, Toyama city, 930-01, Toyama, Japan, JP;(2) Department of Radiology and Nuclear Medicine, Research Institute of Brain and Blood Vessels, Akita, Japan, JP |
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Abstract: | We have encountered a ruptured aneurysm as a filling defect in cisternal blood on CT in patients with acute subarachnoid haemorrhage (SAH), as high-attenuation blood can act as a contrast medium. We term this finding the “filling defect sign”. To evaluate the usefulness of the sign in the diagnosis of a ruptured aneurysm, we retrospectively analysed CT with 10-mm-thick slices obtained within 2 days of onset of SAH in 100 consecutive patients. The sign was observed in 30 of the 100 patients, and in 13 (68 %) of 19 patients with a ruptured aneurysm more than 10 mm in diameter. The filling defect sign is useful in predicting the site of rupture. Received: 30 May 1996 Accepted: 6 September 1996 |
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Keywords: | Computed tomography Aneurysm Subarachnoid haemorrhage |
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