Results 221 to 230 of about 951,958 (288)

Magnetic resonance coronary angiography

Current Cardiology Reports, 2003
Magnetic resonance coronary angiography (MRCA) has witnessed tremendous technical advances over the past decade. Although high-quality images of the coronary arteries have been demonstrated, this imaging modality is not performed routinely today. The fundamental properties of the coronary arteries deterring noninvasive imaging are well known.
Phillip C, Yang, Michael V, McConnell, Dwight G, Nishimura, Bob S, Hu   +3 more
openaire   +4 more sources

Magnetic resonance angiography

Seminars in Vascular Surgery, 2004
MRA and MRI have become increasingly important diagnostic modalities in vascular surgery. The ability to obtain cross-sectional and angiographic images by these noninvasive and non-nephrotoxic modalities represents one of the most significant advances in vascular surgery over the past decade.
Erik K, Insko, Jeffrey P, Carpenter
openaire   +2 more sources

Computed Tomography Angiography and Magnetic Resonance Angiography of Congenital Anomalies of Pulmonary Veins.

Journal of computer assisted tomography, 2019
We aimed to review computed tomography and magnetic resonance angiography of congenital anomalies of pulmonary veins. Total anomalous pulmonary venous return shows all pulmonary veins drain abnormally in another site rather than left atrium.
A. A. Abdel Razek, Hala Al-Marsafawy, M. Elmansy, M. A. El-Latif, D. Sobh   +4 more
semanticscholar   +1 more source

Instrumentation for Magnetic Resonance Angiography

Cardiovascular and Interventional Radiology, 1992
Magnetic resonance angiography (MRA) places high demands on instrumentation capabilities. Magnetic gradient strength capabilities, main magnetic field strength and homogeneity, and eddy current compensation all play a role in determining the quality of the flow studies.
D, Saloner, C M, Anderson
openaire   +2 more sources

Multiecho magnetic resonance angiography

Magnetic Resonance in Medicine, 1987
AbstractSeveral pulse sequences which generate projected MR angiograms are presented. These pulse sequences exploit multiple‐gradient refocused echoes to obtain several independent angiograms, which can be combined or separately analyzed to provide more information than an individual angiogram. For example, a series of angiograms, each with a different
C L, Dumoulin, S P, Souza, H, Feng
openaire   +2 more sources

Coronary magnetic resonance angiography

Journal of Magnetic Resonance Imaging, 2007
AbstractCoronary magnetic resonance angiography (MRA) is a powerful noninvasive technique with high soft‐tissue contrast for the visualization of the coronary anatomy without X‐ray exposure. Due to the small dimensions and tortuous nature of the coronary arteries, a high spatial resolution and sufficient volumetric coverage have to be obtained. However,
Matthias, Stuber, Robert G, Weiss
openaire   +2 more sources

Magnetic Resonance Angiography in Prostatodynia

European Urology, 1995
Three-dimensional magnetic resonance venography (3D MRV) of the prostate and the pelvic cavity was demonstrated in 8 normal subjects and 12 patients with prostatodynia. In all normal subjects and patients, 3D MRV images were successfully obtained. The deep dorsal vein of the penis sends major branches into the anterior and lateral capsular veins as ...
T, Terasaki, H, Watanabe, M, Saitoh, M, Uchida, S, Okamura, K, Shimizu   +5 more
openaire   +2 more sources

Stereotactic Magnetic Resonance Angiography

Stereotactic and Functional Neurosurgery, 1992
Visualization of the surgical trajectory with respect to the cerebral vasculature may enhance the safety of some stereotactic neurosurgical procedures. Traditional stereotactic angiography is tedious and, being an invasive procedure, poses some risk to the patient.
G H, Barnett, D W, Kormos, C P, Steiner
openaire   +2 more sources

Magnetic Resonance Angiography Techniques

Investigative Radiology, 1992
After a radio frequency pulse, the decay of the magnetic resonance (MR) signal is described by two relaxation processes, T1 and T2. T1 describes the rate at which the magnetization realigns itself along the external magnetic field direction (ML), and T2 describes the rate of decay of the magnetization component along the transverse axis (MT).
R R, Price, J L, Creasy, C H, Lorenz, C L, Partain   +3 more
openaire   +2 more sources

GI magnetic resonance angiography

Gastrointestinal Endoscopy, 2002
MRA is a type of magnetic resonance imaging (MRI) in which blood appears bright. To form a magnetic resonance (MR) angiogram, a 3-dimensional set of thin sections is acquired through the region of interest. The images are then processed by computer to create a 2-dimensional projected display that resembles a conventional angiogram.
openaire   +2 more sources