Homogeneity Test on Collimators for Boron-Neutron Capture Therapy based on SNI 8506:2018

A serial homogeneity test based on Indonesian Standard SNI 8506:2018 were undertaken to investigate 12 manufactured collimators by using double wall single image radiography (DWSI) technique with an x-ray machine ranging from 120 150 kV. The standard stated that the film density should be measured seven different points, and result obtained must not exceed ± 0.05 average density. This paper outlines a testing work for collimators, calculating six points in film. Six selected due technical constrains of collimator manufacturing capabilities laboratory. results are: (1) 2.59; (2) 2.57; (3) 2.14; (4) 1.88; (5) 2.10; (6) 1.96; (7) 2.33; (8) 2.28; (9) 2.06; (10) 2.18; (11) 2.24; (12) 2.33. shows collimator-2 has most homogenous study concludes established parameters process are needed manufacture BNCT achieving proper performance standard.