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Maintaining prostate contouring consistency following an educational intervention

View Article: PubMed Central - PubMed

ABSTRACT

Introduction: The aim of this study was to assess variation in prostate contouring 12 months following a structured interactive educational intervention (EI) and to test the hypothesis that EIs positively impact on prostate contouring accuracy and consistency long term.

Methods: A common set of computed tomography (CT) and magnetic resonance imaging (MRI) data sets were used to assess prostate contouring consistency before, immediately after and 12 months following an EI. No further EIs were provided after the initial EI. Contour variation was assessed using the volume ratio (VR), defined as the ratio of the encompassing volume to common volume.

Results: Of the original five radiation oncologists (ROs) at baseline, four completed all assessments, and one was unavailable at 12 months follow‐up. At 12 months, mean VR deteriorated by 3.2% on CT and 1.9% on MRI compared to immediately post EI. Overall, compared to the pre‐EI baseline VR, an improvement of 11.4% and 10.8% was demonstrated on CT and MRI, respectively.

Conclusion: Good retention of applied knowledge 12 months following an EI on prostate contouring was demonstrated. This study advocates for EIs to be included as part of continuing medical education to reduce contour variation among ROs and improve knowledge retention long term.

No MeSH data available.


Volume ratio (VR) = encompassing volume (EV)/common volume (CV).
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jmrs168-fig-0001: Volume ratio (VR) = encompassing volume (EV)/common volume (CV).

Mentions: Observer variation was measured as the ratio of encompassing volume (EV) (the volume of the union of a set of TVs) to common volume (CV, the volume of the intersection of the same set of TVs)3 (See Fig. 1). This metric is referred to as volume ratio (VR) and has also been referred to as the Concordance Index in other contouring analyses.10 For a set of identical TVs, VR is 1, indicating no observer variation. As observer variation increases, VR increases.


Maintaining prostate contouring consistency following an educational intervention
Volume ratio (VR) = encompassing volume (EV)/common volume (CV).
© Copyright Policy - creativeCommonsBy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5016611&req=5

jmrs168-fig-0001: Volume ratio (VR) = encompassing volume (EV)/common volume (CV).
Mentions: Observer variation was measured as the ratio of encompassing volume (EV) (the volume of the union of a set of TVs) to common volume (CV, the volume of the intersection of the same set of TVs)3 (See Fig. 1). This metric is referred to as volume ratio (VR) and has also been referred to as the Concordance Index in other contouring analyses.10 For a set of identical TVs, VR is 1, indicating no observer variation. As observer variation increases, VR increases.

View Article: PubMed Central - PubMed

ABSTRACT

Introduction: The aim of this study was to assess variation in prostate contouring 12 months following a structured interactive educational intervention (EI) and to test the hypothesis that EIs positively impact on prostate contouring accuracy and consistency long term.

Methods: A common set of computed tomography (CT) and magnetic resonance imaging (MRI) data sets were used to assess prostate contouring consistency before, immediately after and 12 months following an EI. No further EIs were provided after the initial EI. Contour variation was assessed using the volume ratio (VR), defined as the ratio of the encompassing volume to common volume.

Results: Of the original five radiation oncologists (ROs) at baseline, four completed all assessments, and one was unavailable at 12 months follow‐up. At 12 months, mean VR deteriorated by 3.2% on CT and 1.9% on MRI compared to immediately post EI. Overall, compared to the pre‐EI baseline VR, an improvement of 11.4% and 10.8% was demonstrated on CT and MRI, respectively.

Conclusion: Good retention of applied knowledge 12 months following an EI on prostate contouring was demonstrated. This study advocates for EIs to be included as part of continuing medical education to reduce contour variation among ROs and improve knowledge retention long term.

No MeSH data available.