Automatic delineation for replanning in nasopharynx radiotherapy: What is the agreement among experts to be considered as benchmark?
| العنوان: | Automatic delineation for replanning in nasopharynx radiotherapy: What is the agreement among experts to be considered as benchmark? |
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| المؤلفون: | Maria Antonietta Gambacorta, Gian Carlo Mattiucci, Vincenzo Valentini, Luca Boldrini, D. Pasini, Luigi Azario, Giuditta Chiloiro, Silvia Chiesa, Giuseppe D'Agostino, Fiorenza De Rose, Mario Balducci |
| المصدر: | Acta Oncologica. 52:1417-1422 |
| بيانات النشر: | Informa UK Limited, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Adult, Male, Organs at Risk, medicine.medical_specialty, medicine.medical_treatment, Computed tomography, Time saving, Automation, Head and neck radiotherapy, Image Processing, Computer-Assisted, medicine, Humans, Radiology, Nuclear Medicine and imaging, Medical physics, Head and neck, radiotherapy, Settore MED/36 - DIAGNOSTICA PER IMMAGINI E RADIOTERAPIA, Aged, Neoplasm Staging, Aged, 80 and over, medicine.diagnostic_test, business.industry, Radiotherapy Planning, Computer-Assisted, Hematology, General Medicine, Middle Aged, Prognosis, Radiographic Image Enhancement, Radiation therapy, Oncology, Head and Neck Neoplasms, Benchmark (computing), Female, Radiotherapy, Intensity-Modulated, Tomography, X-Ray Computed, business, Algorithms, Radiotherapy, Image-Guided |
| الوصف: | Anatomic changes during head and neck radiotherapy require replanning. The primary aim of this study is the definition of the agreement among experts in the head and neck automatic delineation frame to use as benchmark. The secondary goal is to assess the reliability of automatic delineation for nasopharynx radiotherapy and time saving.A computed tomography (CT) scan was acquired in 10 nasopharynx patients along intensity-modulated radiotherapy (IMRT) treatment for replanning. Deformable registration with replanning autocontouring of the structures was performed using VelocityAI 2.3© software defining Structure Set A. The optimization of these contours was obtained through revision by a skilled operator, drawing Structure Set B. An ex novo Structure Set C was segmented on the replanning CT-scan by an expert delineation team. The mean Dice's Similarity Index (mDSI) was calculated between Structure Set A and B, A and C, and between B and C for each volume. All segmentation times for organs at risk (OARs) and clinical target volume (CTV) were recorded and compared.We validated the replanning autocontoured Structure Sets for 10 patients. For volumetric analysis we observed mDSI values of 0.87 for the OARs, 0.70 for nodes, 0.90 for CTV in the Structure Set A-B comparison and respectively of 0.74, 0.63 and 0.78 for the Structure Set A-C one, and 0.78, 0.78 and 0.85 for Structure Set B-C, which represents the existing expert based benchmark. We calculated a mean saved time in Structure Set B of 30 minutes.Autocontouring procedures offer considerable segmentation time saving with acceptable reliability of the contours, even if an independent check procedure for their optimization is still required to increase their adherence to referential benchmark gold standard among experts, which stands at a 0.80 DSI value. |
| تدمد: | 1651-226X 0284-186X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4b04943a6516ce4e9e9e44d3ebf6ad5Test https://doi.org/10.3109/0284186x.2013.813069Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f4b04943a6516ce4e9e9e44d3ebf6ad5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1651226X 0284186X |
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