Mikio OISHI, Masayuki ZUGUCHI, Sin MARUOKA, Haruo OBARA, Department of Medical Technology, College of Medical Sciences, Tohoku University
Radiography: Consideration with X-ray
Incidential Angle to Stenvers Method
Atsuko IDOGAWA* and Tiori WATANABE**
*Sendai National Hospital, **Sendai Social Insurance Hospital
We measured the length and angle of some parts both inside and outside cranial bone in 82 Tohoku Japanese (those Japanese who have inhabited the northeast district of Japan for many generation).
Almost no correlation was found between the length and angle of petrous bone, on one hand, and outward form and cranial bone, age, and sex, on the other.
This suggests that a certain common positioning can be applied to any parson in the photography of petrous bone.
The average angle of petrous bone was 52°, and this angle is wider than the one which has been generally considered average, 45°.
In the photography of auditory organs, the photographic range of internal ear and mastoid antrum at an angle of 52° was wider than that by Stenvers method, which fact suggests that our “52° method” as well as Stenvers method is useful in the photography of auditory organs of modern Tohoku Japanese.