Three-dimensional radiation dosimetry using polymer gel and solid radiochromic polymer: From basics to clinical applications

Table 4 Water equivalency of three-dimensional dosimeters

Dosimeter	Type	Relative effective atomic number	Relative mass density	Relative electron density
PAGAT	PGD	1.0131	1.0264	0.9284
MAGAT	PGD	1.0141, 0.9843	1.0323	0.9933
nMAG	PGD	1.0181
MAGIC	PGD	1.0181, 0.9873	1.0373	0.9903
Genipin gel	PGD	1.0142	1.0012	0.99822
PRESAGE-A	SPD	1.0372	1.0542	0.9772
Water		1.00 (Zeff = 7.42)	1.000	1.0 (3.343 × 1023 Electrons/g)

The numbers in parentheses indicate the references.

¹Ref. [82] (for 18MeV photon energy);

²Ref. [83];

³Ref. [84];

⁴Ref. [85]. PGD: Polymer gel dosimeter; SPD: Solid plastic dosimeter.