Original Jpn J Radiol Technol 2000 ;
Study of Computer-aided Diagnostic Software for Congenital Dislocation
of the Hip Joint(LCC)

OSAMU OHMORI, KIYOSHI SUZUKI, HIROFUMI SATOH, SHUNSUKE WATANABE, and KENJI SATOH
Department of Radiology, Kureha General Hospital
Received Nov. 1, 1999; Revision accepted Jan. 24, 2000; Code No. 241

Summary
Congenital dislocation of the hip joint(LCC: luxatio coxae congenita)is the most frequent congenital dislocation. We attempted to carry out computer-aided diagnosis(CAD)of LCC by tracing the x-ray image on the display and measuring the hip joint by computer program. We developed software for CAD with Visual C++6.0, and adopted the algorithms of Hilgenreiner's method and Iino's method in our determination of the measurement. We studied 146 examples of hip joints in infants under 1 year of age to obtain the data. It was found that diagnosis by CAD software was equal to physicians' diagnosis in 3- to 4-month-old infants. The ease of diagnosis by this program was confirmed, and it was concluded that computer-aided diagnostic software may contribute to the diagnosis of LCC.

Key words: Computer-aided diagnosis(CAD), Congenital dislocation of hip joint, Luxatio coxae congenita(LCC), Hilgenreiner's method, Iino's method