Computer-Aided Detection of Intracranial Aneurysms in MR Angiography
نویسندگان
چکیده
منابع مشابه
Contrast-enhanced MR angiography of intracranial giant aneurysms.
BACKGROUND AND PURPOSE Intravoxel phase dispersion and flow saturation often prevent adequate depiction of intracranial giant aneurysms on 3D time-of-flight (3D-TOF) MR angiography (MRA). Additional diagnostic difficulties may arise from T1 contamination artifact of an associated blood clot. Our aim was to assess whether contrast-enhanced MRA could improve the evaluation of giant aneurysms and ...
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We report three cases of intracranial unruptured aneurysm evaluated with MR angiography using both three-dimensional time-of-flight and three-dimensional phase-contrast techniques. It has been said that the phase-contrast technique has advantages over the time-of-flight technique in the detection of intracranial aneurysms. However, in our three cases, three-dimensional time-of-flight MR angiogr...
متن کاملIntracranial aneurysms and MR angiography: questions and answers.
Many patients with unruptured aneurysms come to medical attention because their lesions are discovered by magnetic resonance (MR). Recent studies suggest a low ( 1) mortality and morbidity with surgical obliteration of these unruptured aneurysms. This contrasts with significantly higher overall rates once the aneurysm is ruptured. Thus, a highly reliable and accurate detection technique to disc...
متن کاملComputer-aided diagnosis improves detection of small intracranial aneurysms on MRA in a clinical setting.
BACKGROUND AND PURPOSE MRA is widely accepted as a noninvasive diagnostic tool for the detection of intracranial aneurysms, but detection is still a challenging task with rather low detection rates. Our aim was to examine the performance of a computer-aided diagnosis algorithm for detecting intracranial aneurysms on MRA in a clinical setting. MATERIALS AND METHODS Aneurysm detectability was e...
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The combination of 3T and parallel-acquisition techniques holds promise for improved performance of contrast-enhanced MR angiography (MRA), in terms of speed, spatial resolution, and coverage. We present a comparison of 2 MRA techniques, including time-of-flight (TOF) and contrast-enhanced MRA, for detection and evaluation of intracranial aneurysms. Our results show that contrast-enhanced MRA w...
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ژورنال
عنوان ژورنال: Journal of Digital Imaging
سال: 2009
ISSN: 0897-1889,1618-727X
DOI: 10.1007/s10278-009-9254-0