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Improving the treatment planning and delivery process of Xoft electronic skin brachytherapy.

Abstract：

PURPOSE:To develop an improved Xoft electronic skin brachytherapy process and identify areas of further improvement. METHODS AND MATERIALS:A multidisciplinary team conducted a failure modes and effects analysis (FMEA) by developing a process map and a corresponding list of failure modes. The failure modes were scored for their occurrence, severity, and detectability, and a risk priority number (RPN) was calculated for each failure mode as the product of occurrence, severity, and detectability. Corrective actions were implemented to address the higher risk failure modes, and a revised process was generated. The RPNs of the failure modes were compared between the initial process and final process to assess the perceived benefits of the corrective actions. RESULTS:The final treatment process consists of 100 steps and 114 failure modes. The FMEA took approximately 20 person-hours (one physician, three physicists, and two therapists) to complete. The 10 most dangerous failure modes had RPNs ranging from 336 to 630. Corrective actions were effective at addressing most failure modes (10 riskiest RPNs ranging from 189 to 310), yet the RPNs were higher than those published for alternative systems. Many of these high-risk failure modes remained due to hardware design limitations. CONCLUSIONS:FMEA helps guide process improvement efforts by emphasizing the riskiest steps. Significant risks are apparent when using a Xoft treatment unit for skin brachytherapy due to hardware limitations such as the lack of several interlocks, a short source lifespan, and variability in source output. The process presented in this article is expected to reduce but not eliminate these risks.

journal_name

Brachytherapy

journal_title

Brachytherapy

authors

Manger R,Rahn D,Hoisak J,Dragojević I

doi

10.1016/j.brachy.2018.04.002

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

702-708

issue

4

eissn

1538-4721

issn

1873-1449

pii

S1538-4721(18)30113-2

journal_volume

17

pub_type

杂志文章

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