title: [Usefulness of the opposite direction for Stenvers' method].
abstract: In otorthinolaryngology, Stenvers' method is employed in radiography of the pyramid (internal acoustic meatus and semicircular canals). However, in cases of dizziness, where the prone position is difficult to achieve, we occasionally use the opposite Stenvers' method instead of the conventional one. This makes it possible to perform radiography with the patient in the supine position. Compared with the conventional Stenvers' method, the problems of this method were increases not only in the rate of magnification but also in lens dose. In this study, we evaluated these problems by employing computed tomography (CT) and a glass dosimeter with phantom as well as by clinical evaluation. The results showed no statistically significant difference between Stenvers' method and the opposite Stenvers' method in both the rate of magnification and the clinical evaluation. The increase in lens dose with the opposite Stenvers' method was not significant. We concluded that the opposite Stenvers' method was useful.
authors.affiliation: Department of Radiology, National Kumamoto Hospital.
authors.forename: Hirotoshi
authors.initials: H
authors.lastname: Maruyama
authors.forename: Tadamitsu
authors.initials: T
authors.lastname: Ideguchi
authors.forename: Hiroki
authors.initials: H
authors.lastname: Ohura
authors.forename: Toshiya
authors.initials: T
authors.lastname: Azuma
authors.forename: Shinichi
authors.initials: S
authors.lastname: Orita
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Amano
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Higashida
mesh_terms: D000328:Adult; D000368:Aged; D007758:Ear, Inner / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007908:Lens, Crystalline; D008297:Male; D008875:Middle Aged; D019047:Phantoms, Imaging; D011187:Posture; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*