heart mri…

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what the risks are heart, section, the middle, heart, mri scans, magnetic resonance imaging, cardiac, nmr, cardiac, nuclear magnetic resonance, cardiac, mri, the heart, heart magnetic resonance imaging, mri, non-invasive procedure, uses powerful magnets, radio waves to produce pictures, the heart, exposure to ionizing radiation, x-rays, heart scanned, a heart mri part of a chest mri mri uses radio waves very close in frequency to those of ordinary fm radio stations, scanner must be located, a specially shielded room to avoid outside interference, patient is lies on a narrow table which slides into a large tunnel-like tube, the scanner, small devices placed around the head, arm, leg, adjacent to other areas to be studied, special body coils which send, receive the radio wave pulses, designed to improve the quality, the images, an iv placed, in the patient's hand, forearm, contrast medium, a technologist, operate the machine, observe the patient, adjacent room, entire study, several sets of images, each taking from 2-15 minutes, a complete scan, depending on the sequences performed, contrast enhancement, take 1 hour, newer scanners, complete the process in less time, no preparatory tests, diets, medications, an mri, performed immediately after other imaging studies, depending on the area of interest, patient asked, fast, 4 to 6 hours, scan, certain metallic objects, not allowed, room, items jewelry, watches, credit cards, hearing aids, pins, hairpins, metal zippers, similar metallic items, distort the images, removable dental work, taken out, scan, pens, pocketknives, eyeglasses, become dangerous projectiles, the stronge mri magnet is activated, should not accompany the patient, scanner area, mri's strong magnetic fields, disrupt cardiac pacemakers cannot be scanned, them should not be scanned, enter the mri area, mri also should not be used, metallic objects in bodies inner ear, cochlear, implants, brain aneurysm clips, artificial heart valves, older vascular stents, placed artificial joints, sheet metal workers, persons, similar potential exposure to small metal fragments, first be screened, metal shards, the eyes, x-rays, the skull, sign a consent form confirming that none, above apply, the mri begins, a hospital gown recommended, patient allowed to wear clothing, metal fasteners, infants, children, test depends on child's age, prepare child, infant test, procedure preparation, birth to 1 year, toddler test, procedure preparation, 1 to 3 years, preschooler test, procedure preparation, 3 to 6 years, schoolage test, procedure preparation, 6 to 12 years, adolescent test, procedure preparation, 12 to 18 years, no pain, patient cannot feel the magnetic field, radio waves, primary possible discomfort, claustrophobic feeling that some experience from inside the scanner, table hard, cold, request a blanket, pillow, machine produces loud thumping, humming noises, normal operation, ear plugs, patient to reduce the noise, a technologist observes the patient, entire procedure, spoken to, an intercom, in the scanner, mri scanners, equipped, televisions, special headphones to help the examination time pass, excessive movement, blur mri images, certain artifacts, patient has difficulty lying still, very anxious, an oral, intravenous sedative given, no recovery time, sedation was necessary, after an mri scan, resume normal diet, medications, mri provides detailed pictures, the heart, blood vessels, distinguish tissues from moving blood, differentiate between heart muscle, surrounding tissues, clarify the findings from previous x-rays, ct scans, mri excels at showing the heart from multiple views, mri is useful in diagnosing congenital abnormalities, abnormal growths, tumors, mri is sometimes, avoid the dangers of angiography, repeated exposure to radiation, exposure to iodinated contrast dye, provide additional information, an echocardiogram is unclear, bone, air, not interfere, imaging, in addition, heart mri provides a wider view, better detail than an echocardiogram, sensitivity of mri depends, in part, on the experience, the radiologist, a heart mri, reveal the following disorders, heart valve disorders, pericardial effusion, tumor invasion of blood vessels, pericardium, around the heart, left atrial myxoma, right atrial myxoma, congenital heart abnormalities, pulmonary atresia, fibrosis, scarring of heart muscle, how much heart muscle is dead, after a heart attack, no ionizing radiation involved in mri, no known side effects, the magnetic fields, radio waves on the human body, the effects of strong magnetic fields on a fetus, not well known, pregnant women, advised to avoid mri scans, mri, not recommended, traumatic injuries, traction, life-support equipment cannot safely enter the scanner area, scan times, relatively lengthy, gadolinium, most commonly used intravenous contrast agent, very safe, have been documented allergic reactions to it, extremely rare, sedation is used, associated risks of oversedation, technologist, monitor the patient's vital signs, heart rate, respiration, mri is more accurate than ct scan, tests, certain conditions, less accurate, disadvantages include the high cost, long duration, the scan, sensitivity to movement, claustrophobia, confused, anxious, have difficulty lying still, the relatively long scan times, mri is not portable, incompatible, metallic implants, life support devices, traction, apparatus, similar equipment, mri is superior in most cases, differentiation of soft tissues, view organs, obstruction by bone, foreign bodies, capable of showing the tissues from multiple viewpoints, non invasive way to evaluate blood flow.