发明名称 |
Energy subtraction processing method using weighted average of plural stacked sheets for creating high energy image |
摘要 |
In an energy subtraction processing for radiation images, a plurality of stimulable phosphor sheets laid one upon the other are simultaneously exposed to a radiation of high energy passing through an object, and then a different stimulable phosphor sheet is exposed to a radiation of low energy passing through the same object. Digital image signals detected from the stimulable phosphor sheets exposed to the high energy radiation are weighted and subjected to arithmetic averaging. A subtraction processing is carried out between an image signal obtained by the arithmetic averaging and an image signal detected from the stimulable phosphor sheet exposed to the low energy radiation.
|
申请公布号 |
US5029083(A) |
申请公布日期 |
1991.07.02 |
申请号 |
US19900467293 |
申请日期 |
1990.01.16 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
SHIMURA, KAZUO;NAKAJIMA, NOBUYOSHI;ISHIDA, MASAMITSU |
分类号 |
A61B6/00;G01T1/00;G03B42/02;G06T5/50;H04N7/18 |
主分类号 |
A61B6/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|