title: [Comparison between direct radiographic enlargement and mammography technique in detection of osseous changes of the hand skeleton in hyperparathyroidism].
abstract: OBJECTIVE
  To compare direct magnification radiography and mammographic film-screen systems in osseous changes of the hand in hyperparathyroidism.
  
  
  METHODS
  The hands of 60 patients who were suspected to have primary (5), secondary or tertiary (both 55) hyperparathyroidism were evaluated with direct magnification radiography and a mammographic film-screen system (S12.5). Posterior-anterior views of each hand were obtained with both techniques. The magnification radiographs were made with a focal spot size of 40 or 60 microns, digital luminescence radiography (S600/1200), and a x 6 or 8 magnification. The 240 films were evaluated for subperiosteal, intracortical and endosteal resorptive changes by five radiologists using a grading according to five levels of confidence.
  
  
  RESULTS
  A significant improvement (p < 0.05) in the diagnosis of periosteal and intracortical bone resorption was shown, but no significant changes in endosteal resorption with direct magnification radiography. As compared to mammographic film-screen systems, magnification radiography improved the diagnostic accuracy (24%). The time needed for the evaluation of periosteal and intracortical bone resorption was shortened with direct magnification radiography (-4%/ -15%), and the time for giving the diagnosis decreased (-10%).
authors.affiliation: Radiologische Klinik, Rheinische Friedrich-Wilhelms-Universität Bonn.
authors.forename: H
authors.initials: H
authors.lastname: Müller-Miny
authors.forename: T
authors.initials: T
authors.lastname: Link
authors.forename: I
authors.initials: I
authors.lastname: Braun-Anhalt
authors.forename: K H
authors.initials: KH
authors.lastname: Dietl
authors.forename: P E
authors.initials: PE
authors.lastname: Peters
mesh_terms: D000328:Adult; D001862:Bone Resorption / Q000000981:diagnostic imaging*; D001842:Bone and Bones / Q000000981:diagnostic imaging*; D012080:Chronic Kidney Disease-Mineral and Bone Disorder / Q000000981:diagnostic imaging; D005260:Female; D006225:Hand / Q000000981:diagnostic imaging*; D006801:Humans; D006961:Hyperparathyroidism / Q000000981:diagnostic imaging*; D006962:Hyperparathyroidism, Secondary / Q000000981:diagnostic imaging*; D016030:Kidney Transplantation / Q000502:physiology; D008297:Male; D008327:Mammography / Q000295:instrumentation*; D008875:Middle Aged; D010002:Osteitis Fibrosa Cystica / Q000000981:diagnostic imaging; D010281:Parathyroid Hormone / Q000097:blood; D011858:Radiographic Magnification / Q000295:instrumentation*; D014963:X-Ray Intensifying Screens
chemical_list: D010281:Parathyroid Hormone