Acta radiologica
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To evaluate the usefulness of CT angiography (CTA) in the detection of intracranial aneurysms in patients with acute subarachnoid hemorrhage (SAH). ⋯ Although CTA cannot replace cerebral arteriography in the diagnostic work-up of acute SAH, it proved to be helpful in demonstrating the topographic anatomy of cerebral aneurysms and surrounding structures.
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To compare conventional spin-echo (SE) sequences with T2-weighted turbo SE and serial gadolinium-enhanced T1-weighted FLASH sequences in the detection and characterization of hepatic hemangiomas, and to describe the enhancement characteristics of the lesions on dynamic MR imaging. ⋯ Further clinical study is needed for evaluating the differential diagnostic advantages of turbo SE T2-weighted imaging compared to the calculation of T2-values by means of a SE T2-weighted sequence. However, the results of the present study suggest that T2-weighted turbo SE imaging and precontrast and serial gadolinium-enhanced FLASH imaging have the potential to replace conventional SE imaging in the evaluation of hepatic hemangiomas.
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To retrospectively evaluate the underlying pathomechanism of isolated fracture of the posterolateral tibial lip (Volkmann's triangle), and to demonstrate associated radiographic methods. ⋯ Plain conventional radiography is still necessary in the primary diagnosis of ankle joint lesions. The isolated fracture of the dorsal tibial margin is best seen in the standard lateral view. Indication for CT in routine diagnostics is limited to cases showing clinical evidence of ankle injury without roentgenological signs of a fracture in the standard images. Differential diagnoses include the pilon lesion and the Maison-neuve-type fracture.
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To define various cranial MR appearances in Wilson's disease (WD). ⋯ On T2-weighted images, WD is suggested by: atrophy; putaminal lesions with a pattern of symmetric, bilateral, concentric-laminar T2 hyperintensity; and the involvement of the pars compacta of the substantia nigra, periaqueductal gray matter, the pontine tegmentum and the thalamus. The hepatic component of WD may cause increased T1 signal intensity in basal ganglia. In the adult age group, the basal ganglia lesions may be different from those in the pediatric group; the putaminal lesions may not be present; the globus pallidus and substantia nigra may show increased hypointensity on T2-weighted images. Cortical and subcortical lesions may also be present with a predilection to the frontal lobe.
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Review Case Reports
Intracranial aneurysm following radiation therapy for medulloblastoma. A case report and review of the literature.
Radiation-induced intracranial aneurysm formation is a rare but life-threatening condition with a high mortality rate secondary to rupture of the aneurysm. Furthermore, this condition can mimic tumour recurrence. ⋯ The development of intracranial aneurysms and rupture following radiation damage of the arteries has been reported previously, but in no case as soon as 10 months after radiation therapy. It is important to diagnose these aneurysms as they can be successfully treated.