Location Error of the Dens in a Two-Dimensional Set-up Verification During Head and Neck Radiotherapy

Author(s):  
Dong Hyun Kim ◽  
Won Taek Kim ◽  
Yong Gan Ki ◽  
Ji Ho Nam ◽  
Mi Ran Lee ◽  
...  
2017 ◽  
Vol 17 (1) ◽  
pp. 104-113
Author(s):  
Helena Lenko ◽  
Primož Peterlin

AbstractAimTo examine and quantify set-up errors in patient positioning in head-and-neck radiotherapy and to investigate the impact of the choice of reference isocentre—on the patient neck or patient skull—on the magnitude of set-up errors.Materials and methodsSet-up position corrections obtained using online kV 2D/2D matching were recorded automatically for every treatment fraction. 3,413 treatment records for 117 patients treated with volumetric modulated arc therapy during 2013 and 2014 on a single treatment machine in our clinic were analysed. In 79 treatment plans the reference isocentre was set to the patient skull, and in 47 to the neck.ResultsStandard deviation of group systematic error in the vertical, longitudinal and lateral direction and the couch rotation were found to be 2·5 mm, 2·1 mm, 1·9 mm and 0·43° (skull) and 2·5 mm, 1·8 mm, 1·7 mm and 0·49° (neck), respectively. Random error of the vertical, longitudinal, lateral and rotational position correction was 1·8 mm, 1·5 mm, 1·6 mm and 0·62° (skull) and 1·9 mm, 1·6 mm, 1·5 mm and 0·60° (neck), respectively. Positional shifts in different directions were found to be uncorrelated.ConclusionsNeither reference isocentre set-up shows a clear advantage over the other in terms of interfraction set-up error.


2007 ◽  
Vol 2 (1) ◽  
pp. 44 ◽  
Author(s):  
Tejpal Gupta ◽  
Supriya Chopra ◽  
Avinash Kadam ◽  
Jai Agarwal ◽  
P Reena Devi ◽  
...  

2016 ◽  
Vol 119 ◽  
pp. S773
Author(s):  
D. Den Boer ◽  
E. Slooten ◽  
G. Wortel ◽  
E. Lamers-Kuijper ◽  
O. Hamming-Vrieze ◽  
...  

2003 ◽  
Vol 68 (2) ◽  
pp. 137-148 ◽  
Author(s):  
Emile N.J.Th van Lin ◽  
Lisette van der Vight ◽  
Henk Huizenga ◽  
Johannes H.A.M Kaanders ◽  
Andries G Visser

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Joshua R. Niska ◽  
Cameron S. Thorpe ◽  
Michele Y. Halyard ◽  
Angelina D. Tan ◽  
Pamela J. Atherton ◽  
...  

2021 ◽  
Vol 60 (5) ◽  
pp. 589-597
Author(s):  
Rasmus L. Christiansen ◽  
Jørgen Johansen ◽  
Ruta Zukauskaite ◽  
Christian R. Hansen ◽  
Anders S. Bertelsen ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document