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Mean excitation energy
I
I
-values for body tissues may vary significantly from one patient to another,
and they are responsible for the large uncertainties, up to the order of 10–
15%, stated by ICRU-37 for the mass stopping powers of body tissues.
…mass stopping-power ratios to water are more dependent on possible
patient-to-patient differences on composition, and therefore on I -values,
than on density…
The key issue continues to be tissue segmentation due to individual tissue
composition and I –values…
April 2017
15
Pedro 2015 in PMB