发明名称 |
Measuring tool for computer assisted tomographic scanner |
摘要 |
A measuring tool (10) for determining the thickness and position of the X-ray beam of a computer is disclosed which allows the information about the X-ray beam to be derived by analysis of a tomographic image taken of the measuring tool. The measuring tool (10) includes a phantom (12) which has formed therein a plurality of receptacles (14) which receive inserts (16). At least two of the inserts (16) each include therein an image creating pattern (20) including a helical pattern (22) and a center indicator (24) so that both thickness and positioning information can be obtained from the computer-generated tomographic image taken of the tool by examining the images created of the helical patterns (22) and center indicators (24) in the inserts (16).
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申请公布号 |
US4344183(A) |
申请公布日期 |
1982.08.10 |
申请号 |
US19800140152 |
申请日期 |
1980.04.14 |
申请人 |
RADIATION MEASUREMENTS, INC. |
发明人 |
JACOBSON, DONALD R. |
分类号 |
G21K1/00;(IPC1-7):G01D18/00 |
主分类号 |
G21K1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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