This study describes anatomic findings of the retrolingual airway in patients that correlate with OSA and can be measured on an upper airway CT. Patients with severe OSA (AHI > or = 40) tend to have retrolingual airways less than 4% of the cross-sectional area of the cervicomandibular ring. The retrolingual airspace is the major site of obstruction in severe OSA and should be carefully evaluated before surgical treatment is considered.

The imaging findings of bisphosphonate-related femoral insufficiency fractures, which include a typical proximal diaphyseal location and transverse liner radiolucency through localized thickening of the lateral cortex, allow a specific diagnosis.

Chemical shift imaging is a useful adjunct MR technique to characterize focal and diffuse marrow abnormalities on routine non-contrast pelvic imaging. It is highly sensitive in identifying malignant disease. Despite its lower specificity, the need for biopsy could be eliminated in more than 60 % of patients with benign disease.