发明名称 |
METHOD FOR CALIBRATING THE MEASURING SYSTEM OF AN X-RAY APPARATUS |
摘要 |
In order to represent the bone structure of a patient's body, acquisitions are made with different irradiation energies. The irradiations are compared with these two energies in order to deduce a two-dimensional projected image which is representative of the bone structure alone. To this end, there is assigned to each pixel in the projected images a value corresponding to the thickness of bone traversed by an x-ray which has terminated at said pixel. This value is obtained by calibrating the measuring system, detector cell by detector cell, so as to correct the spatial non-uniformities of the acquisition system.
|
申请公布号 |
US5123037(A) |
申请公布日期 |
1992.06.16 |
申请号 |
US19900627766 |
申请日期 |
1990.12.14 |
申请人 |
GENERAL ELECTRIC CGR S.A. |
发明人 |
PICARD, CATHERINE;ROUGEE, ANNE;SAINT-FELIX, DIDIER;TROUSSET, YVES |
分类号 |
A61B6/00;A61B6/03;G01T1/161 |
主分类号 |
A61B6/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|