Publications by authors named "Deyond Yung-Woon Siu"

A 45-year-old woman complained of a progressive 2-month history of bilateral hearing impairment and diplopia on upward gaze. She had a history of a recurrent pineal region ganglioglioma with repeated tumor excision, adjuvant radiotherapy, and a ventriculo-peritoneal shunt performed 12 years prior. Subsequent imaging studies 6 years ago showed a pineal region cyst with progressive increase in size and a Rickham reservoir (Codman; Johnson & Johnson, Raynham, MA) was placed for percutaneous cyst fluid aspiration.

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With the advanced technology of multi-slice CT scans, we explored the effectiveness of CT angiography (CTA) in place of digital subtraction angiography (DSA) in patients with acute spontaneous intracerebral hemorrhage (ICH). We performed a computerized PubMed search of the literature from inception to 27 July 2011 to find reports of similar comparative studies and performed a meta-analysis of diagnostic accuracy. The pooled sensitivity was 97.

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A flow-diverting stent is placed in the parent artery to reduce blood flow in the aneurysm sac to facilitate progressive thrombosis and neointimal remodeling while maintaining outflow in the side branches and perforators. All international multicenter registries have reported on the progressive occlusion of aneurysms with time and have implied that an occluded aneurysm would not recanalize given the protective effect of the altered hemodynamics. Recanalization of an occluded aneurysm after placement of a flow-diverting stent has not been reported in the literature.

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Background And Purpose: we compared the effectiveness of using computed tomographic angiography and venography (CTAV) with digital subtraction angiography (DSA) in young or nonhypertensive patients with acute spontaneous intracerebral hemorrhage.

Methods: we prospectively recruited 109 young (age between 18 and 45 years) or nonhypertensive patients with acute spontaneous intracerebral hemorrhage for this comparative study. All patients had CTAV using multidetector CT with 64 detectors.

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Purpose: We investigated the role of noncontrast computerized tomography in predicting the treatment outcome of shock wave lithotripsy on upper ureteral stones to formulate a clinical algorithm to facilitate clinical management.

Materials And Methods: Adult patients with upper ureteral stones confirmed by noncontrast computerized tomography and scheduled for primary in situ shock wave lithotripsy were prospectively recruited. Standardized treatment was performed on each patient.

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