GASTROENTEROLOGY ARTICLE OF THE WEEK
September 18, 2008
Goncalves JA, Elazzazzi M, Altun E, Semelka RC. When should abdominal magnetic resonance imaging be used? Clin Gastroenterol Hepatol 2008;6:610-615.
1. MRI is the preferred study to evaluate
a. Liver lesions
b. Kidney stones
c. Retroperitoneal tumors
d. Lung metastasis from colon cancer
e. Patients on dialysis who need imaging
True or False
2. Gadolinium should not be used in patients with renal disease because it can cause renal failure
3. MRI uses gadolinium-based contrast, a type of iodine contrast
4. MRCP images are obtained by using a gadolinium-based contrast formula that is excreted by hepatocytes into the biliary canaliculi.
5. MRI is superior to CT for the evaluation of the pelvic floor and anal sphincters
6. The main drawback of MRI is motion artifact, more prominent with older slower machines
7. MRI may offer advantages over CT in the evaluation of patients with inflammatory bowel disease