Dose calibration of Gafchromic EBT3 film for Ir-192 brachytherapy source using 3D-printed PLA and ABS plastics

3D Printing in Medicine

Table 2 Dose Measured in Water and Residual Error

TPS Dose (cGy)	Red (cGy)	Error (%)	Green (cy)	Error (%)	Blue (cGy)	Error (%)
0	−6.1	–	− 0.6	–	−4.9	–
50	53.5	7.0	52.1	4.2	60.0	19.9
100	102.5	2.5	97.8	−2.2	98.07	−1.8
200	203.0	1.5	199.3	−0.4	197.8	−0.1
400	397.0	−0.8	400.3	0.1	395.0	−1.2
600	596.4	−0.6	602.6	0.4	600.7	0.2
800	801.5	0.2	798.1	−0.2	796.2	−0.4
Low Dose Mean		4.8		3.2		10.9
High Dose Mean		0.8		0.3		0.7

Dose to water was measured based on calibration curve fit (in Table 1). The residual error was determined as the percent difference between the planned and the measured dose to water. An absolute mean error was calculated for each color channel. The mean error was split into low dose (< 100 cGy) and high dose (> 100 cGy) ranges

ISSN: 2365-6271