الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Ulceration, infection, gangrene and lower extremity amputation are complications often encountered in patients with diabetes mellitus. These often result in extensive morbidity, repeated hospitalizations and mortality to the patient.
X ray remains the first screening examination in any patient with suspected diabetic foot infection and have the advantage of being inexpensive.However, MRI is more sensitive than plain radiography in detection of osteomyelitis and soft tissue infections ,So MRI allows better localization of infection and preoperative mapping of the extent of infection and thus may help to minimize the area of resection .
MRI is the better in evaluation of some cases with resistant infection with insufficient findings in X ray .MRI is better in evaluation of diabetic foot lesions because it can reliably detect primary bone marrow abnormalities and secondary abnormalities including cortical bone destruction, cellulitis,abscess, and sinus tracts. The primary findings of osteomyelitis are decreased signal on T1 weighted images, increased signal on T2 weighted images and STIR, and enhancement following contrast administration in the bone marrow.
However, the indicators with the highest positive predictive value for osteomyelitis are the secondary findings of cortical bone interruption,
cutaneous ulcer, and a sinus tract adjacent to areas of bone marrow signal abnormality.