ARRT MRI study guide
ARRT MRI · Work through your exam, one topic at a time.
The ARRT Magnetic Resonance Imaging examination is the assessment ARRT uses when awarding certification and registration in MRI. ARRT describes itself as a leading credentialing organization offering certification and registration across a wide range of radiologic disciplines, serving more than 370,000 registrants, and it lists Magnetic Resonance Imaging among its credential options. Most candidates arrive with an existing radiologic credential, and ARRT also publishes a separate Imaging Assistant, Magnetic Resonance pathway, so confirm which route applies to you in ARRT's own handbooks. The exam is multiple choice and is organized around four content areas of equal emphasis: patient care, imaging procedures, physics and instrumentation, and safety. The ARRT MRI study guide has 4 sections and about 1,250 words.
01Patient Care
Every MRI encounter begins with a documented screening interview: implants and devices, foreign bodies such as shrapnel or intraocular metal, prior surgery, pregnancy status, allergies, renal function, weight, and the patient's ability to lie still and use the call device. Remove medication patches (some have metallic backing), transdermal systems, and loose metal; hospital gowns avoid zippers and snaps.
317 words, about 2 min02Imaging Procedures
Procedure questions reward a systematic plan: define the clinical question, pick the contrast weighting (T1 for anatomy and post-contrast, T2 for fluid and pathology, proton density for joint detail, STIR or fat-saturated T2 for edema, FLAIR to suppress CSF, diffusion for restricted motion, gradient echo for blood and susceptibility), then set plane, coverage, and resolution. Match the coil to the anatomy and center the patient at isocenter.
307 words, about 2 min03Physics and Instrumentation
A static field B0 aligns hydrogen nuclei; an RF pulse at the Larmor frequency tips them. Larmor frequency = 42.58 MHz/T × field strength, so 1.5 T gives about 63.9 MHz and 3 T about 127.7 MHz.
314 words, about 2 min04Safety
The MR suite is divided into four zones of increasing hazard. Zone I is freely accessible, Zone II is the reception and screening area, Zone III is the physically restricted area where screening is controlled, and Zone IV is the magnet room itself.
312 words, about 2 min