scholarly journals Target Volume Delineation Training in Radiation Oncology in India : A Survey Evaluating Its Status, the Need for Educational Programs and the Utility of Virtual Teaching

2021 ◽  
Vol 22 (12) ◽  
pp. 3875-3882
Author(s):  
Syed Touseef Hussain ◽  
Pragna Sagar Rapole ◽  
Pooja Sethi ◽  
Aswin Chandran Veluthattil ◽  
Ninad Patil ◽  
...  
Keyword(s):  
Radiation Oncology ◽  
Target Volume ◽  
Educational Programs ◽  
Target Volume Delineation ◽  
Volume Delineation ◽  
Virtual Teaching

Implementation and efficacy of a large-scale radiation oncology case-based peer-review quality program across a multinational cancer network.

2019 ◽  
Vol 37 (27_suppl) ◽  
pp. 1-1
Author(s):  
Ethan B. Ludmir ◽  
Karen E. Hoffman ◽  
Anuja Jhingran ◽  
Mee-Chung Puscilla Ip ◽  
Seth D. Frey ◽  
...  
Keyword(s):  
Peer Review ◽  
Radiation Oncology ◽  
Large Scale ◽  
Radiation Treatment ◽  
Target Volume ◽  
National Standards ◽  
Case Volume ◽  
Target Volume Delineation ◽  
Volume Delineation ◽  
Cancer Network

1 Background: With rapid community expansion of academic cancer centers, ensuring high-quality delivery of care across all affiliated network sites is critical. Here we report the results of a radiation oncology peer-review system implemented across a large multinational cancer network. Methods: Weekly radiation oncology peer-review conferences were held between network centers and the main campus of a major cancer system; results of standardized peer-review for each case were recorded. Peer-review resulted in each case being scored as concordant or nonconcordant on initial review; nonconcordance was based on institutional guidelines, national standards, and/or expert opinion. Results: Between 2014 and 2018, 28,730 patient radiation treatment plans underwent peer-review at 10 network centers. The peer-review case volume increased over this study period, from 1,420 cases in 2014 to 9,112 in 2018, concomitant with network expansion. Examining cases reviewed in 2018 (N = 9,112), the most-commonly reviewed cases by disease site were breast (28.9%), head and neck (HN; 13.9%), and lung (12.6%). Of all cases in 2018, 452 (5.0%) were deemed nonconcordant. Higher nonconcordance rates were noted for HN cases (14.0%), and lower rates for lung cases (2.3%; p < 0.001). Of nonconcordant HN cases, the majority (69.5%) were deemed nonconcordant based on target volume delineation. Of nonconcordant breast cases, most (67.1%) were nonconcordant based on radiation field design. For centers added to the network during the study period, we observed a significant decrease in the nonconcordance rate over time after joining the network (average annual decrease of 5.4% in nonconcordant cases; p < 0.001). Conclusions: These data demonstrate the feasibility and efficacy of a large-scale multinational cancer network radiation oncology weekly peer-review program. Nonconcordance rates were highest for HN cases, primarily due to target volume delineation. With improved nonconcordance rates for newly-added network centers, these results offer the promise of improving the quality of radiotherapy delivery across an extensive cancer network with a major academic center as the nucleus.

O26. A review on target volume delineation using FDG-PET/CT images for radiation oncology

2016 ◽  
Vol 32 ◽  
pp. 149
Author(s):  
M. du Toit ◽  
A. Potgieter ◽  
M. Heunis ◽  
R. Boellaard ◽  
J. Pruim
Keyword(s):  
Radiation Oncology ◽  
Fdg Pet ◽  
Target Volume ◽  
Ct Images ◽  
Target Volume Delineation ◽  
Volume Delineation ◽  
Pet Ct ◽  
Fdg Pet Ct

Technical illustration of Volumetric arc conformal radiotherapy planning in a case of paratesticular sarcoma

2021 ◽  
pp. 1-6
Author(s):  
Anil Gupta ◽  
Rambha Pandey ◽  
Seema Sharma ◽  
Vivek Ghosh ◽  
Ekta Dhamija ◽  
...  
Keyword(s):  
Organs At Risk ◽  
Target Volume ◽  
Radiotherapy Planning ◽  
Current Evidence ◽  
Lower Grade ◽  
Malignant Tumours ◽  
Target Volume Delineation ◽  
Volume Delineation ◽  
Delivery Technique ◽  
Technical Illustration

Abstract Introduction: Paratesticular sarcoma are extremely rare malignant tumours. Unlike other sites, they tend to be lower grade and have higher propensity of lymphatic spread. They tend to fail locally and occasionally in the regional lymph nodes. In the absence of target volume delineation guidelines and technical illustration of conformal planning, we have made an attempt to illustrate conformal planning methodology and define target volume based on current evidence in a case of paratesticular sarcoma. Methods: We are presenting a case of 62-year-old male who presented with 15-cm scrotal swelling and underwent high inguinal orchidectomy with ligation of spermatic cord. Histopathology presented a well-differentiated leiomyosarcoma of epididymis. Post-operative radiotherapy target volume included the tumour bed, ipsilateral inguinal nodes and lower pelvic nodes as the clinical target volume. Conclusion: Adjuvant radiotherapy using advanced delivery technique such as volumetric arc technique can provide good dose distribution with good sparing of organs at risk. The downside of conformal radiation delivery is that it is a resource-intensive and has no established target volume delineation guidelines.

scholarly journals Interobserver variability in target volume delineation in definitive radiotherapy for thoracic esophageal cancer: a multi-center study from China

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Xiao Chang ◽  
Wei Deng ◽  
Xin Wang ◽  
Zongmei Zhou ◽  
Jun Yang ◽  
...  
Keyword(s):  
Esophageal Cancer ◽  
Gross Tumor Volume ◽  
Tumor Volume ◽  
Interobserver Variability ◽  
Target Volume ◽  
Thoracic Esophageal Cancer ◽  
Target Volume Delineation ◽  
Cancer Centers ◽  
Definitive Radiotherapy ◽  
Volume Delineation

Abstract Purpose To investigate the interobserver variability (IOV) in target volume delineation of definitive radiotherapy for thoracic esophageal cancer (TEC) among cancer centers in China, and ultimately improve contouring consistency as much as possible to lay the foundation for multi-center prospective studies. Methods Sixteen cancer centers throughout China participated in this study. In Phase 1, three suitable cases with upper, middle, and lower TEC were chosen, and participants were asked to contour a group of gross tumor volume (GTV-T), nodal gross tumor volume (GTV-N) and clinical target volume (CTV) for each case based on their routine experience. In Phase 2, the same clinicians were instructed to follow a contouring protocol to re-contour another group of target volume. The variation of the target volume was analyzed and quantified using dice similarity coefficient (DSC). Results Sixteen clinicians provided routine volumes, whereas ten provided both routine and protocol volumes for each case. The IOV of routine GTV-N was the most striking in all cases, with the smallest DSC of 0.37 (95% CI 0.32–0.42), followed by CTV, whereas GTV-T showed high consistency. After following the protocol, the smallest DSC of GTV-N was improved to 0.64 (95% CI 0.45–0.83, P = 0.005) but the DSC of GTV-T and CTV remained constant in most cases. Conclusion Variability in target volume delineation was observed, but it could be significantly reduced and controlled using mandatory interventions.

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