Preclinical investigations towards the first spacer gel application in prostate cancer treatment during particle therapy at HIT

Table 2 Calculated [[24]] and measured carbon ion ranges (presented in in mm)

		Calculated	Session 1	Session 2	Session 3
#1	Reference	86.65	86.65	86.68	85.96
#2	Phantom-reference	86.65	86.61	86.69	85.97
#3	Empty vial	70.69	70.80	70.80	70.00
#4	Vial filled with water	38.51	38.71	38.72	38.02
#5	Vial filled with gel	-	[3] 38.31 ±0.30	[5] 38.27 ±0.29	[3] 37.63 ±0.29
#6	Vial filled with gel	-	-	-	[3] 37.68 ±0.51
	(After 33 Gy irradiation)
#7	WEPL of spacer gel	-	1.0126 ±0.0111	1.0141 ±0.0101	1.082 ±0.0108

Sessions 1–3 (columns) refer to three measurement series acquired within 10 weeks. The values in rows #1 to #6 are given in mmH₂O. Rows #1 to #4 present the ranges acquired in reference measurements (2σ=0.2 mmH₂O), row #5 (2σ uncertainty) reports the measured ranges of spacer gel, row #6 (2σ uncertainty) the measured range after the high dose irradiation (c.f., Section Insensitivity to high dose irradiation). In squared brackets [x] the number of performed measurements is stated. The bottom row (#7) presents calculated WEPL values.

ISSN: 1748-717X