title: Bone scintigraphy equipped with a pinhole collimator for diagnosis of avascular necrosis of the femoral head.
abstract: The objective was to compare the sensitivities for diagnosis of avascular necrosis of the femoral head of bone scintigraphy equipped with a pinhole collimator and with an high resolution parallel collimator. Bone scintigraphy equipped with a pinhole collimator and with an high resolution parallel collimator were performed in 16 patients with bilateral (n=7) or unilateral (n=9) avascular necrosis of the femoral head. Bone scintigraphy equipped with a pinhole collimator documented a photopenic defect in 78.3% of the necrotic hips, while bone scintigraphy equipped with an high resolution parallel collimator documented a defect in 47.8%. There was no false-positive diagnosis of avascular necrosis of the femoral head on either bone scintigraphy equipped with a pinhole or with an high resolution parallel collimator. In conclusion, bone scintigraphy equipped with a pinhole collimator has a greater sensitivity for diagnosis of avascular necrosis of the femoral head than bone scintigraphy equipped with an high resolution parallel collimator.
authors.affiliation: Department of Rheumatology, CHU Dijon, France.
authors.forename: J F
authors.initials: JF
authors.lastname: Maillefert
authors.forename: M
authors.initials: M
authors.lastname: Toubeau
authors.forename: C
authors.initials: C
authors.lastname: Piroth
authors.forename: L
authors.initials: L
authors.lastname: Piroth
authors.forename: F
authors.initials: F
authors.lastname: Brunotte
authors.forename: C
authors.initials: C
authors.lastname: Tavernier
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D013679:Technology, Radiologic / Q000295:instrumentation; D014965:X-Rays
chemical_list: D019275:Radiopharmaceuticals