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Setup accuracy for prone and supine whole breast irradiation

THOMAS MULLIEZ, AKOS GULYBAN (UGent) , Tom Vercauteren (UGent) , Annick Van Greveling (UGent) , Bruno Speleers (UGent) , Wilfried De Neve (UGent) and Liv Veldeman (UGent)
(2016) STRAHLENTHERAPIE UND ONKOLOGIE. 192(4). p.254-259
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Organization
Abstract
Purpose: To evaluate cone-beam computed tomography (CBCT) based setup accuracy and margins for prone and supine whole breast irradiation (WBI). Methods: Setup accuracy was evaluated on 3559 CBCT scans of 242 patients treated with WBI and uncertainty margins were calculated using the van Herk formula. Uni- and multivariate analysis on individual margins was performed for age, body mass index (BMI) and cup size. Results: The population-based margin in vertical (VE), lateral (LA) and longitudinal (LO) directions was 10.4/9.4/9.4 mm for the 103 supine and 10.5/22.4/13.7 mm for the 139 prone treated patients, being significantly (p < 0.01) different for the LA and LO directions. Multivariate analysis identified a significant (p < 0.05) correlation between BMI and the LO margin in supine position and the VE/LA margin in prone position. Conclusion: In this series, setup accuracy is significantly worse in prone compared to supine position for the LA and LO directions. However, without proper image-guidance, uncertainty margins of about 1 cm are also necessary for supine WBI. For patients with a higher BMI, larger margins are required.
Keywords
CAVITY, CLIPS, GUIDANCE, POSITION, Supine position, Breast radiotherapy, Prone position, Setup accuracy, Cone-beam computed tomography, BEAM COMPUTED-TOMOGRAPHY, IMAGE-GUIDED RADIOTHERAPY, CORRECTION PROTOCOL, PRECISION, CANCER PATIENTS, IMRT

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MLA
MULLIEZ, THOMAS et al. “Setup Accuracy for Prone and Supine Whole Breast Irradiation.” STRAHLENTHERAPIE UND ONKOLOGIE 192.4 (2016): 254–259. Print.
APA
MULLIEZ, T., GULYBAN, A., Vercauteren, T., Van Greveling, A., Speleers, B., De Neve, W., & Veldeman, L. (2016). Setup accuracy for prone and supine whole breast irradiation. STRAHLENTHERAPIE UND ONKOLOGIE, 192(4), 254–259.
Chicago author-date
MULLIEZ, THOMAS, AKOS GULYBAN, Tom Vercauteren, Annick Van Greveling, Bruno Speleers, Wilfried De Neve, and Liv Veldeman. 2016. “Setup Accuracy for Prone and Supine Whole Breast Irradiation.” Strahlentherapie Und Onkologie 192 (4): 254–259.
Chicago author-date (all authors)
MULLIEZ, THOMAS, AKOS GULYBAN, Tom Vercauteren, Annick Van Greveling, Bruno Speleers, Wilfried De Neve, and Liv Veldeman. 2016. “Setup Accuracy for Prone and Supine Whole Breast Irradiation.” Strahlentherapie Und Onkologie 192 (4): 254–259.
Vancouver
1.
MULLIEZ T, GULYBAN A, Vercauteren T, Van Greveling A, Speleers B, De Neve W, et al. Setup accuracy for prone and supine whole breast irradiation. STRAHLENTHERAPIE UND ONKOLOGIE. 2016;192(4):254–9.
IEEE
[1]
T. MULLIEZ et al., “Setup accuracy for prone and supine whole breast irradiation,” STRAHLENTHERAPIE UND ONKOLOGIE, vol. 192, no. 4, pp. 254–259, 2016.
@article{7137567,
  abstract     = {Purpose: To evaluate cone-beam computed tomography (CBCT) based setup accuracy and margins for prone and supine whole breast irradiation (WBI). 
Methods: Setup accuracy was evaluated on 3559 CBCT scans of 242 patients treated with WBI and uncertainty margins were calculated using the van Herk formula. Uni- and multivariate analysis on individual margins was performed for age, body mass index (BMI) and cup size. 
Results: The population-based margin in vertical (VE), lateral (LA) and longitudinal (LO) directions was 10.4/9.4/9.4 mm for the 103 supine and 10.5/22.4/13.7 mm for the 139 prone treated patients, being significantly (p < 0.01) different for the LA and LO directions. Multivariate analysis identified a significant (p < 0.05) correlation between BMI and the LO margin in supine position and the VE/LA margin in prone position. 
Conclusion: In this series, setup accuracy is significantly worse in prone compared to supine position for the LA and LO directions. However, without proper image-guidance, uncertainty margins of about 1 cm are also necessary for supine WBI. For patients with a higher BMI, larger margins are required.},
  author       = {MULLIEZ, THOMAS and GULYBAN, AKOS and Vercauteren, Tom and Van Greveling, Annick and Speleers, Bruno and De Neve, Wilfried and Veldeman, Liv},
  issn         = {0179-7158},
  journal      = {STRAHLENTHERAPIE UND ONKOLOGIE},
  keywords     = {CAVITY,CLIPS,GUIDANCE,POSITION,Supine position,Breast radiotherapy,Prone position,Setup accuracy,Cone-beam computed tomography,BEAM COMPUTED-TOMOGRAPHY,IMAGE-GUIDED RADIOTHERAPY,CORRECTION PROTOCOL,PRECISION,CANCER PATIENTS,IMRT},
  language     = {eng},
  number       = {4},
  pages        = {254--259},
  title        = {Setup accuracy for prone and supine whole breast irradiation},
  url          = {http://dx.doi.org/10.1007/s00066-016-0943-6},
  volume       = {192},
  year         = {2016},
}

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