Magnetic resonance angiography is a minimally invasive medical test that helps physicians diagnose and treat medical conditions an angiogram uses imaging methods and in some cases a contrast material to produce pictures of major blood vessels throughout the body. Magnetic resonance imaging mri in magnetic resonance angiography mra a powerful magnetic field radio frequency waves and a computer produce detailed images of the major arteries within the body mr angiography does not use ionizing radiation x rays mra may be performed with or without contrast material. An mra is a test that lets your doctor see inside your blood vessels your arteries and veins mra stands for magnetic resonance angiogram or mr angiography your doctor may ask you to get one . Pulse sequences that permit selective detection of moving spins in a magnetic resonance image have been developed experiments were performed by the authors to produce projected angiographic data without the use of contrast agents with the intensity of each image pixel determined by the macroscopic velocity of the detected spins with this method suppression of nonmoving spins is essentially . The siemens magnetom skyra 3t mri magnetic resonance imaging machine has a magnetic field of 3 tesla 3 t most mri machines fall within the range of 15 3 t the higher magnetic field the more accurate imaging capabilities this machine can be used for many different medical purposes including oncology neurology cardiology and
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