title: How to measure scapholunate and Cobb's angles on MRI and CT.
abstract: The measurement of angles between anatomical structures is common in radiological and orthopedic practice. Frequently used measurements include scapholunate angle for assessment of wrist instability and Cobb's angle used for assessment of scoliosis. Measurements of these angles are easily performed on plain X-ray radiographs. However, the situation is more complicated when these measurements are to be performed on cross-sectional (CT or MRI) examinations. On some of the diagnostic workstations, it is not possible to perform angle measurements between the structures if they are not identified on the same image and are located on different images of the same projection or plane. We present a simple solution to measure angles between structures on different images that can be used both in CT and MR.
authors: Department of Radiology, McMaster University Medical Centre, 1200 Main St. West, Hamilton, ON, L8N 3Z5, Canada. zeev25@yahoo.com
authors: Zeev V
authors: ZV
authors: Maizlin
authors: Patrick M
authors: PM
authors: Vos
mesh_terms: D001837:Body Weights and Measures / Q000379:methods*; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D012600:Scoliosis / Q000175:diagnosis*; D013131:Spine / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014953:Wrist / Q000000981:diagnostic imaging / Q000473:pathology