Fusing speed and phase information for vascular segmentation of phase contrast MR angiograms
نویسندگان
چکیده
منابع مشابه
Fusing speed and phase information for vascular segmentation of phase contrast MR angiograms
This paper presents a statistical approach to aggregating speed and phase (directional) information for vascular segmentation of phase contrast magnetic resonance angiograms (PC-MRA). Rather than relying on speed information alone, as done by others and in our own work, we demonstrate that including phase information as a priori knowledge in a Markov random field (MRF) model can improve the qua...
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This paper presents a statistical approach to aggregating speed and phase (directional) information for vascular segmentation in phase contrast magnetic resonance angiograms (PC-MRA), and proposes a Maxwell-Gaussian finite mixture distribution to model the background noise distribution. In this paper, we extend our previous work [6] to the segmentation of phase-difference PC-MRA speed images. W...
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Pulmonary hypertension (PH) is a life-threatening, multifactorial pathophysiological haemodynamic condition, diagnosed when the mean pulmonary arterial pressure equals or exceeds 25 mmHg at rest during right heart catheterization. Cardiac MRI, in general, and MR phase-contrast (PC) imaging, in particular, have emerged as potential techniques for the standardized assessment of cardiovascular fun...
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Introduction For many applications of MRI angiography (MRA), high spatial resolution images obtained in reasonable scan times are required. For significantly decreasing the image acquisition time, projection reconstruction based approaches have been proposed, using highly undersampled two-dimensional projections [1,2]. These methods have e.g. been successfully applied to temporally resolved MRA...
متن کاملSubtraction MR Venography Acquired from Time-Resolved Contrast-Enhanced MR Angiography: Comparison with Phase-Contrast MR Venography and Single-Phase Contrast-Enhanced MR Venography
OBJECTIVE To evaluate the image characteristics of subtraction magnetic resonance venography (SMRV) from time-resolved contrast-enhanced MR angiography (TRMRA) compared with phase-contrast MR venography (PCMRV) and single-phase contrast-enhanced MR venography (CEMRV). MATERIALS AND METHODS Twenty-one patients who underwent brain MR venography (MRV) using standard protocols (PCMRV, CEMRV, and ...
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ژورنال
عنوان ژورنال: Medical Image Analysis
سال: 2002
ISSN: 1361-8415
DOI: 10.1016/s1361-8415(02)00057-9