Nõgyógyászati tumorok képvezérelt, intenzitásmodulált adjuváns sugárkezelésével szerzett kezdeti tapasztalataink

Translated title of the contribution: Initial experience with image-guided and intensity-modulated postoperative radiotherapy of gynecological cancer

Réka Király, Csilla Pesznyák, Szilvia Varga, Nhung Anhhong Nguyen, T. Major, C. Polgár

Research output: Contribution to journalArticle

Abstract

Our goal was to determine the extent of the CTV-PTV margin. Accuracy of patient setup was checked with daily CBCT. Two radiation oncologists performed the image matching independently. The CTV-PTV margin was calculated with the van Herk formula. The treatment plans were created with the Varian Eclipse v11 planning system, and the treatments were carried out with a Varian TrueBeam accelerator by using RapidArc technique with two full arcs. Dose constraints on the target volume and organs at risk recommended by international bodies were applied. Conformity number (CN) for PTV, V45 and V50 for organs at risk were used to assess and compare the treatment plans of RapidArc and 3D-KRT (conformal radiotherapy) techniques. The average CTV-PTV margins with or without IGRT were 0.67 cm vs. 1.53 cm, 0.66 cm vs. 1.25 cm and 0.34 cm vs. 0.98 cm in vertical, longitudinal and lateral directions, respectively. In case of daily on-line CBCT verification 0.5 cm margin can be used.

Original languageHungarian
Pages (from-to)111-116
Number of pages6
JournalMagyar onkologia
Volume64
Issue number2
Publication statusPublished - Jun 21 2019

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ASJC Scopus subject areas

  • Medicine(all)

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