Three-dimensional helical CT angiography.
نویسندگان
چکیده
منابع مشابه
Three-dimensional helical CT angiography of skull base meningiomas.
PURPOSE To describe the findings of skull base meningiomas on three-dimensional CT angiograms obtained with helical scanning and to evaluate the usefulness of this method. METHODS Fifteen patients who had a meningioma near the skull base were examined with helical CT after receiving an intravenous bolus injection of contrast material. RESULTS All meningiomas had either a honeycomb (12 patie...
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A 34-year-old man was referred to for persistent dyspnea 6 months after a blunt chest trauma with subcutaneous emphysema and bilateral pneu-mothoraces, however, without initial bronchoscopy. The three-dimensional CT reconstruction revealed a stenosis of the intermedius bronchus, confirmed by bronchoscopy and successfully treated by bronchial sleeve resection (Fig. 1). Fig. 1. The arrow shows th...
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PURPOSE To evaluate the usefulness of three-dimensional CT angiography (CTA), in which contrast material is used to create reformations of dynamic scans, in the diagnosis and the preoperative evaluation of cerebral aneurysms. METHODS We used 3-D CTA to examine 65 patients with suspected or angiographically verified cerebral aneurysms. A blind study was performed to evaluate the diagnostic acc...
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Eight Beagle dogs were anesthetized and were imaged using a single channel helical CT scanner. The contrast medium used in this study was iohexol (300 mg I/ml) and doses were 0.5 ml/kg for a cine scan, 3 ml/kg for an enhanced scan. The flow rate for contrast material administration was 2 ml/sec for all scans. This study was divided into three steps, with unenhanced, cine and enhanced scans. The...
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Background and Purpose Our purpose was to develop a deep learning angiography (DLA) method to generate 3D cerebral angiograms from a single contrast-enhanced acquisition. Material and Methods Under an approved IRB protocol 105 3D-DSA exams were randomly selected from an internal database. All were acquired using a clinical system (Axiom Artis zee; Siemens Healthineers) in conjunction with a sta...
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ژورنال
عنوان ژورنال: RadioGraphics
سال: 1994
ISSN: 0271-5333,1527-1323
DOI: 10.1148/radiographics.14.4.7938777