Journal of computer assisted tomography
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J Comput Assist Tomogr · Sep 2005
Case ReportsExtravasation of intracranial aneurysm during computed tomography angiography: mimicking a blood vessel.
Two cases of contrast media extravasation of a ruptured aneurysm during computed tomography angiography (CTA) are described. The contrast media extravasation appeared as a highly attenuated twisted ribbon-like structure originating from the aneurysmal dome, and this mimicked a vascular structure. Because rebleeding of an aneurysm is accompanied by disastrous consequences, it is important to understand the imaging feature of active bleeding on CTA.
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J Comput Assist Tomogr · Sep 2005
High-concentration contrast media in multiphasic abdominal multidetector-row computed tomography: effect of increased iodine flow rate on parenchymal and vascular enhancement.
The purpose of this study was to assess the influence of the iodine flow rate on parenchymal and vascular enhancement during multiphasic abdominal multidetector-row computed tomography (MDCT). ⋯ A high iodine flow rate in multiphasic abdominal MDCT improves enhancement of the aorta and the pancreas during the arterial phase but does not influence later phases.
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J Comput Assist Tomogr · Sep 2005
Case ReportsCerebral lipiodol embolism after transcatheter arterial chemoembolization of hepatocellular carcinoma.
A case of cerebral lipiodol embolism after transcatheter arterial chemoembolization (TACE) of hepatocellular carcinoma is presented. A 76-year-old man underwent TACE for advanced hepatocellular carcinoma. ⋯ Magnetic resonance imaging showed restricted diffusion within the thalami and basal ganglia. The patient's level of consciousness gradually improved, and all neurologic symptoms disappeared over 6 weeks.
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J Comput Assist Tomogr · Jul 2005
Case ReportsAge dependence of diffusion-weighted magnetic resonance imaging findings in maple syrup urine disease encephalopathy.
A patient with maple syrup urine disease (MSUD) who developed encephalopathy twice and underwent magnetic resonance examinations, including diffusion-weighted (DW) imaging, is presented. Areas of abnormal intensity on DW images dramatically differed between the initial and second attacks, apparently attributable to the difference in myelination. Our observation demonstrates the age dependence of DW imaging findings in MSUD encephalopathy attributable to progression of myelination and would help in the proper diagnosis of MSUD encephalopathy at any age.
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J Comput Assist Tomogr · Jul 2005
Case ReportsComputed tomographic angiography for determination of brain death.
A 69-year-old woman developed deep coma and brain stem areflexia after subarachnoid hemorrhage. Due to unstable vital signs, she was not a candidate for an apnea test. Computed tomographic angiography revealed absence of intracranial circulation, and brain death was diagnosed.