FMEA occurrence values for four failure modes occurring using look-up tables for dose calculations.

CONCLUSIONS: While all of the discrepancies only resulted in a monitor unit (MU) calculation difference of <1.7%, this review shows how frequently various discrepancies can occur. Typos and rounding/avoiding interpolation are the steps most likely to potentially cause a miscalculation of MU. To avoid direct human interaction on such a large repetitive scale, creating forms that calculate MU automatically from initial measurement data would reduce the incidences that numbers are written/transcribed and eliminate the need to look up data in a table, thus reducing the chance for error.
PMID: 33191597 [PubMed - as supplied by publisher]

Source: Journal of Applied Clinical Medical Physics - November 15, 2020 Category: Physics Authors: Nelson G, Paxton A, Kunz J, Huang J, Szegedi M, Sarkar V, Salter B Tags: J Appl Clin Med Phys Source Type: research