Skip to main content

Table 1 Chemical composition and electron density of the PMMA used as the phantom material

From: Development of a PMMA phantom as a practical alternative for quality control of gamma knife® dosimetry

Component

fi

Z/A

ρe,PMMA

ρe,PMMA /ρe,water

H

0.081

0.992162

0.639

1.155

C

0.595

0.499542

O

0.317

0.500031

unknown

0.007

0.500

  1. Legend: fi is the fraction by weight of the atom i, Z/A is the atomic number weight mass ratio, ρe,PMMA is the electron density of PMMA and ρe,PMMA /ρe,water is the ratio of the electron densities of PMMA and water
Back to article page

Radiation Oncology

ISSN: 1748-717X

Contact us