How to Order and Interpret Radiology Studies
How to Order and Interpret Radiology Studies
How to Order and Interpret Radiology Studies
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Magnetic Resonance Imaging<br />
Contraindications<br />
– Pacemakers<br />
(under investigation)<br />
Pracically, , an absolute<br />
contraindication<br />
– Prosthetic cardiac valves<br />
safe after 6 weeks<br />
– Stents & grafts<br />
Non-ferromagnetic are safe<br />
Ferromagnetic are safe after 6 weeks<br />
– Due <strong>to</strong> epithelialization<br />
Abdominal aortic aneurysm stents check with<br />
radiologist<br />
– Pumps – check with radiologist<br />
– Other devices may malfunction or be contraindicated<br />
Magnetic Resonance Imaging<br />
Contraindications (continued)<br />
– Metal objects<br />
Can migrate, heat up, <strong>to</strong>rque<br />
Foreign bodies, body piercings, jewelry<br />
Situational clearance<br />
– Fragment in brain or<br />
eye contraindicated<br />
– Bullet in femur or<br />
muscle likely OK<br />
– Tat<strong>to</strong>os & cosmetics can<br />
heat up<br />
Metallic dyes<br />
Magnetic Resonance Imaging<br />
Contraindications (continued)<br />
– Obese patients<br />
Scanner table weight limits<br />
Gantry opening might be<br />
<strong>to</strong>o small<br />
– Pregnancy<br />
Animal studies conflicting<br />
Avoid during 1 st trimester<br />
No gadolinium unless<br />
absolutely necessary<br />
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