J. MORITA MANUFACTURING CORPORATION;NIHON UNIVERSITY
发明人:
ARAI, YOSHINORI,SUZUKI, MASAKAZU
申请号：
FI20041018
公开号：
FI124875B
申请日:
2004.07.23
申请国别(地区):
FI
年份:
2015
代理人:
摘要：
In an X-ray computerized tomography scanner, a correction phantom embedding an X-ray absorbing object is put on or around a non-vertical rotary axis between an X-ray source and a two-dimensional X-ray detector, and two dimensional imaging data of the phantom is acquired. Then a locus of the X-ray absorbing material is determined in the two-dimensional imaging data, and based on the locus an ideal locus is obtained in the direction of the rotary axis. Next, a difference between the calculated position of the ideal locus and a measured position is determined in the direction of the rotary axis. The difference is used to correct deviation in the direction of the rotary axis.
