Keyhole Imaging Combined Phase Contrast MR Angiography Technique
نویسندگان
چکیده
منابع مشابه
3D-Rotational Phase-Contrast MR Angiography
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 کاملNon-contrast MR Angiography
Figure 1. NC-MRA (inflow inversion recovery) shows normal arterial vasculature of the lower extremities. PA, popliteal artery; AT, anterior tibial arteries; PT, posterior tibial arteries; and PER, peroneal arteries. Techniques for performing non-contrast MR angiography (NC-MRA) have been available since the introduction of MR imaging. These techniques were largely displaced by contrast-enhanced...
متن کاملContrast-Enhanced MR Angiography
Magnetic resonance angiography (MRA) is increasingly used to evaluate arterial and venous diseases. Although the resolution of MRA is not as high as that of conventional angiography, it is sufficient to evaluate pathologic conditions in the larger vascular structures of most parts of the body. It is especially useful in patients who cannot tolerate the risks of iodinated contrast agents or arte...
متن کاملMR phase-contrast imaging in pulmonary hypertension
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...
متن کاملPhase-enhancement Technique for a Hybrid-of-opposite-contrast Mr Angiography
Introduction: A Flow-sensitive black-blood (FSBB) technique employing to 3D gradient echo (GRE) with motion-probing-gradient [1], and a MRA technique named Hybrid-of-opposite-contrast (HOP) MR angiography combining TOF and FSBB using dual-echo 3DGRE [2] were proposed. In addition, basic idea for correcting wraparound signal in vessels using phase-corrected real signal in FSBB was also proposed ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Biomedical Engineering Research
سال: 2012
ISSN: 1229-0807
DOI: 10.9718/jber.2012.33.2.072