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CT perfusion phantom
专利权人:
Jacob Sosna
发明人:
Jacob Sosna,Aviv Hirschenbain
申请号:
US13147378
公开号:
US08636411B2
申请日:
2010.02.03
申请国别(地区):
US
年份:
2014
代理人:
摘要:
A physical phantom reference to control for variability of computed tomography measurement results duplicates the density curve of blood perfusion of contrast material in a healthy aorta or large artery to normalize observed changes in healthy arterial blood perfusion when calculating the reduction in tumor blood perfusion between two examination times. In one embodiment, a plurality of compartments with different concentrations of contrast material corresponding to a density curve of blood perfusion of a healthy tissue are positioned-in a screening field of a CT machine so the CT machine images the compartments when it images the healthy tissue. In another embodiment, a pipe containing fluid receives an injection of contrast material from the injector when the injector injects the contrast material into the patient, the pipe having sections of varying diameter so the sections together correspond to a blood perfusion curve of the contrast material in a healthy tissue.
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