Table 4.

MRI dose sensitivity of different gel dosimeters (from Lepage et al (2001a)).

Monomer	D1/2(Gy)	δR2/δD (s−1 Gy−1)	R2sat–R20 (s−1)	Functional group
AAm/Bis	5.5 (±0.1)	0.33 (±0.1)	4.2 (±0.4)
Acrylic acid (AAc)	31.2 (±0.1)	0.358 (±0.006)	10.6 (±0.4)
Methacrylic acid (Mac)	12.5 (±0.1)	1.19 (±0.05)	18.4 (±0.4)
1-Vinyl-2-pyrrolidone (VP)	23.6 (±0.1)	0.082 (±0.004)	13.7 (±0.4)
2-Hydroxyethyl-acrylate (HEA)	5.5 (±0.1)	0.498 (±0.003)	4.2 (±0.4)
2-Hydroxyethyl-methacrylate (HEMA)	41.6 (±0.1)	0.046 (±0.002)	4.9 (±0.4)
N-Iso-propylacrylamide (NIPAM)/Bis (Bis)	20 (±0.1)	0.14 (±0.01)	5.2 (±0.4)