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Table 1 Phantom inserts.

From: Investigation of the usability of conebeam CT data sets for dose calculation

Material

 

specified density (g/cm3)

HU-DpCT density (g/cm3)

HU-DpCT CT value (HU)

Air

 

0

0

0

PMP

C6H12(CH2)

0.83

0.81

800

LDPE

C2H4

0.92

0.91

900

Polystyrene

C8H8

1.05

0.96

960

Acrylic

C5H8O2

1.18

1.12

1120

Delrin®

proprietary

1.41

1.27

1340

Teflon®

CF2

2.16

1.61

1950

  1. CATPhan® material inserts and their specified density values are listed; for comparison the measured CT values in the planning CT and the corresponding density determined from the Gammex RMI® table HU-DpCT.
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Radiation Oncology

ISSN: 1748-717X

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