发明名称 |
Apparatus and method for flooding a nuclear imaging device with radiation from an imaging source |
摘要 |
The present invention teaches a method for uniformly flooding a nuclear imaging device with radiation from a radiation-emitting calibration source and for correcting for the non-uniformity in count density of nuclear imaging sources and apparatus for carrying out the method. The method includes the steps of positioning a nuclear imaging flood source beneath or adjacent a nuclear imaging device such as a gamma camera having a plurality of radiation sensing elements; moving the source in a controlled motion; thereby blurring or diminishing the effects of any non-uniformities in the source. Apparatus for moving the source includes a support for the source and a means for moving the source adjacent to or beneath a camera. Circular motion may be achieved by connecting the support to means for rotating it, such as a motor drive shaft, or by manually rotating it. Other simple motion may be achieved by means which move the source about a simple curve. If complex motion is desired, one embodiment of the apparatus includes a plurality of geared shafts interconnected between the source support and a drive motor. The resultant motion is a complex continuous patterned motion which presents many points on the source to each of a plurality of sensors or detectors in the nuclear imaging device.
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申请公布号 |
US4882494(A) |
申请公布日期 |
1989.11.21 |
申请号 |
US19880160839 |
申请日期 |
1988.02.26 |
申请人 |
DUNCAN, MICHAEL D. |
发明人 |
ROGERS, ROXANNE R.;KIRBY, STEVEN B.;SIMON, THEODORE;MATTHIESEN, SHARON |
分类号 |
G01T1/164 |
主分类号 |
G01T1/164 |
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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