The automation of radiotherapy treatment planning assessment

Crowe, Scott, Kairn, Tanya, Trapp, Jamie, Hargrave, Catriona Elizabeth, & Bridge, Peter (2014) The automation of radiotherapy treatment planning assessment. In 2014 Combined Scientific Meeting : Imaging and Radiation in Personalised Medicine, 4–7 September 2014, Melbourne Convention and Exhibition Centre, Melbourne, Vic.

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Abstract

Aim

The assessment of treatment plans is an important component in the education of radiation therapists. The establishment of a grade for a plan is currently based on subjective assessment of a range of criteria. The automation of assessment could provide a number of advantages including faster feedback, reduced chance of human error, and simpler aggregation of past results.

Method

A collection of treatments planned by a cohort of 27 second year radiation therapy students were selected for quantitative evaluation. Treatment sites included the bladder, cervix, larynx, parotid and prostate, although only the larynx plans had been assessed in detail. The plans were designed with the Pinnacle system and exported using the DICOM framework.

Assessment criteria included

beam arrangement optimisation, volume contouring, target dose coverage and homogeneity, and organ-at-risk sparing. The in-house Treatment and Dose Assessor (TADA) software1 was evaluated for suitability in assisting with the quantitative assessment of these plans. Dose volume data were exported in per-student and per-structure data tables, along with beam complexity metrics, dose volume histograms, and reports on naming conventions.

Results

The treatment plans were exported and processed using TADA, with the processing of all 27 plans for each treatment site taking less than two minutes. Naming conventions were successfully checked against a reference protocol. Significant variations between student plans were found. Correlation with assessment feedback was established for the larynx plans.

Conclusion

The data generated could be used to inform the selection of future assessment criteria, monitor student development, and provide useful feedback to the students. The provision of objective, quantitative evaluations of plan quality would be a valuable addition to not only radiotherapy education programmes but also for staff development and potentially credentialing methods. New functionality within TADA developed for this work could be applied clinically to, for example, evaluate protocol compliance.

Impact and interest:

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ID Code: 75958
Item Type: Conference Paper
Refereed: Yes
Additional Information: Abstract published in Journal of Medical Radiation Sciences, 61(S1), pp. 217.
Additional URLs:
Keywords: radiotherapy
DOI: 10.1594/ranzcr2014/R-0232
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900) > Medical Physics (029903)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Schools > School of Clinical Sciences
Current > QUT Faculties and Divisions > Faculty of Health
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Deposited On: 08 Sep 2014 22:07
Last Modified: 06 Sep 2016 03:04

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