Fewer beams and segments result in a shorter delivery time and a better quality intensity-modulated radiotherapy plan in gastric cancer

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SHEN Y.; LI X.; LIANG L.; ZHAO Y.; BAI S.; XU F.

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Journal Paper

Paper Information

Journal: International Journal of Radiation Research Year:2017 | Volume:15 | Issue:3 Page(s): 281-288

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Title

Fewer beams and segments result in a shorter delivery time and a better quality intensity-modulated radiotherapy plan in gastric cancer

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Keywords

Beams and segments

intensity-modulated radiotherapy

plan quality

delivery time

gastric cancer

Abstract

Background: This study evaluated whether IMRT using fewer Beams and segments could reduce delivery me without compromising plan quality in gastric cancer adjuvant radiotherapy. Materials and Methods: Fi een pa ents with advanced gastric cancer who underwent D2, R0 surgery were included in this study. IMRT plans for each pa ent were designed as 7 equal beams with 40 segments, 5 beams with 25 segments and 4 beams with 20 segments. The dosimetric parameters were compared for the planned target volume (PTV). The dose of normal organs at risk (OARs) was also assessed. The monitor units and treatment mes of the different IMRT plans were calculated. Results: The 20-segment IMRT plan significantly reduced the PTV maximum dose compared to the 40-segment IMRT plan. The 20-segment IMRT plan improved le kidney and liver dose sparing in V20 and V30 as well as the 40-segment IMRT plan did and provided be4er protec on for the V20 (13. 86± 7. 78) of the right kidney, the V30 (9. 25± 4. 04) of the le kidney, the D mean (19. 68± 2. 47) of liver and D max (38. 79± 3. 57) of the spinal cord. Irradia on mes in the 20-segment and 25-segment plans decreased by 2. 5 and 1. 9 min, respec vely, compared to the 40-segment IMRT plan. Conclusion: IMRT using fewer Beams and segments reduced delivery me without compromising plan quality in gastric cancer adjuvant radiotherapy. Fewer segments IMRT plans lowered the monitor units and the treatment me.

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APA: Copy

SHEN, Y., LI, X., LIANG, L., ZHAO, Y., BAI, S., & XU, F.. (2017). Fewer beams and segments result in a shorter delivery time and a better quality intensity-modulated radiotherapy plan in gastric cancer. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 15(3), 281-288. SID. https://sid.ir/paper/286880/en

Vancouver: Copy

SHEN Y., LI X., LIANG L., ZHAO Y., BAI S., XU F.. Fewer beams and segments result in a shorter delivery time and a better quality intensity-modulated radiotherapy plan in gastric cancer. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2017;15(3):281-288. Available from: https://sid.ir/paper/286880/en

IEEE: Copy

Y. SHEN, X. LI, L. LIANG, Y. ZHAO, S. BAI, and F. XU, “Fewer beams and segments result in a shorter delivery time and a better quality intensity-modulated radiotherapy plan in gastric cancer,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 15, no. 3, pp. 281–288, 2017, [Online]. Available: https://sid.ir/paper/286880/en

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