Quantitative assessment of inter-observer consistency in target volume delineation following breast-conserving surgery and mastectomy - Takeaways - MDSpire

Quantitative assessment of inter-observer consistency in target volume delineation following breast-conserving surgery and mastectomy

  • By

  • An Yi

  • Lihong He

  • Zijie Wang

  • Xin Liu

  • Bin Li

  • Zhuoyu He

  • Jin Liu

  • Chunling Jiang

  • July 16, 2026

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  • 1

    Inter-observer discrepancies in postoperative breast cancer CTV contouring were quantitatively evaluated among 22 regional oncologists.

  • 2

    The study analyzed contouring discrepancies using Dice similarity coefficients and Hausdorff distances against a consensus reference.

  • 3

    Large volumes showed acceptable delineation consistency, while regional nodal stations exhibited poor consistency in contouring.

  • 4

    Mean Dice similarity coefficients for CTVp_breast and CTVp_thoracic wall were 0.80 and 0.63, respectively, indicating variability.

  • 5

    Standardized anatomical training is essential to improve radiotherapy uniformity, particularly for regional nodal station delineation.

Original Source(s)

Quantitative assessment of inter-observer consistency in target volume delineation following breast-conserving surgery and mastectomy

  • by An Yi, Lihong He, Zijie Wang, Xin Liu, Bin Li, Zhuoyu He, Jin Liu, Chunling Jiang

  • July 16, 2026

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