title: [Quantitative evaluation of deformity of the iliac artery during extension and flexion of the hip joint: three-dimensional evaluation using MDCT].
abstract: We performed CT-angiography twice, first hip joint extension, followed by second flexion. Using vessel analysis software, we placed several points of interest at equal intervals on the center line of the iliac artery, from the bifurcation to the femoral artery inguinal portion, and recorded the their three-dimensional coordinates. We also marked the circumference, which passes by three points that add the respective next point and prior point to each reference point. This curvature (the inverse number of the radius) was utilized as the index that displays crookedness. This method was able to estimate quantitatively the grade of crookedness, and, by comparing an equidistant point from the bifurcation, to show the changes in grade at flexion of the hip joint.
authors.affiliation: Department of Radiology, Kitasato University School of Medicine.
authors.forename: Keiji
authors.initials: K
authors.lastname: Matsunaga
authors.forename: Mamiko
authors.initials: M
authors.lastname: Takaya
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nishimaki
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Ohnuma
authors.forename: Shouko
authors.initials: S
authors.lastname: Kotani
authors.forename: Reiko
authors.initials: R
authors.lastname: Woodhams
authors.forename: Mayumi
authors.initials: M
authors.lastname: Sasaki
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Hata
authors.forename: Yukio
authors.initials: Y
authors.lastname: Tamura
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Hirata
authors.forename: Kazushige
authors.initials: K
authors.lastname: Hayakawa
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography / Q000379:methods*; D001162:Arteriosclerosis Obliterans / Q000473:pathology / Q000503:physiopathology; D019917:Blood Vessel Prosthesis Implantation; D005260:Female; D006621:Hip Joint / Q000503:physiopathology*; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000503:physiopathology; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008875:Middle Aged; D016059:Range of Motion, Articular / Q000502:physiology*; D036542:Tomography, Spiral Computed / Q000379:methods*