Author: Peiris, G.S.
Paper Title Page
MOPAB415 Failure Rates and Downtimes of Multi-Leaf Collimators in Indonesia 1248
 
  • G.S. Peiris, S.L. Sheehy
    The University of Melbourne, Melbourne, Victoria, Australia
  • M.F. Kasim, S.A. Pawiro
    University of Indonesia, Depok, Jawa Barat, Indonesia
 
  One of the greatest barriers to cancer treatment in Low and Middle-Income Countries (LMICs) is the access to Radiotherapy Linear Accelerators (LINACs). Not only are the LINACs complex, the harsh environment of LMICs cause frequent breakdowns resulting in downtimes ranging from days to months. Recent research has identified a disparity between LMICs and High Income Countries (HICs) and determined the Multi-Leaf Collimator (MLC) as a component needing re-evaluation. The MLC causes over 30% of the problems in RT LINACs, but the modes of failure and quantify the extent of the damage done are yet to be quantified. Using data from across Indonesia, we show the pathways to failure of RT Machines and frequency of breakdowns over time. A component of the MLC needs to be replaced every 9.98 faults per 1000 patients treated and the MLC itself breaks down on average every 36±1.8 days. When comparing the downtime by leaf width, the data shows 5mm leaves contribute 18.27±6.5% to all breakdowns while 10mm makes up 15.87±4.3%. These results outline the need to reassess the current generation of RT LINACs and ultimately work towards guiding future designs to be robust enough for all environments.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB415  
About • paper received ※ 19 May 2021       paper accepted ※ 09 June 2021       issue date ※ 16 August 2021  
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