SU-GG-J-175: Target Registration Error Analysis Via KV Imaging and Conebeam CT in Accelerated Partial Breast Irradiation

2008 ◽  
Vol 35 (6Part8) ◽  
pp. 2720-2720
Author(s):  
B Schuller ◽  
A Nawaz ◽  
J Wolfgang ◽  
D Gierga ◽  
J Willins ◽  
...  
Keyword(s):  
Error Analysis ◽  
Accelerated Partial Breast Irradiation ◽  
Partial Breast Irradiation ◽  
Breast Irradiation ◽  
Registration Error ◽  
Target Registration Error ◽  
Conebeam Ct

scholarly journals Residual Image Registration Error by Fiducial Markers in Accelerated Partial Breast Irradiation Using C-Arm Linac: A Phantom Study

2021 ◽  
Author(s):  
Ryohei Yamauchi ◽  
Natsuki Murayoshi ◽  
Shinobu Akiyama ◽  
Norifumi Mizuno ◽  
Tomoyuki Masuda ◽  
...  
Keyword(s):  
Image Registration ◽  
Respiratory Motion ◽  
Fiducial Marker ◽  
Accelerated Partial Breast Irradiation ◽  
Partial Breast Irradiation ◽  
Fiducial Markers ◽  
Breast Irradiation ◽  
Registration Error ◽  
Surgical Clips ◽  
Residual Image

Abstract Introduction: External beam accelerated partial breast irradiation (APBI) is an alternative treatment for patients with early-stage breast cancer. The efficacy of image-guided radiotherapy (IGRT) using fiducial markers, such as gold markers or surgical clips, has been demonstrated. However, the effects of respiratory motion during a single fraction have not been reported. This study aimed to evaluate the residual image registration error of fiducial marker-based IGRT by respiratory motion and propose a suitable treatment strategy.Materials & Methods: We developed an acrylic phantom embedded with surgical clips to verify the registration error under moving conditions. The frequency of the phase difference in the respiratory cycle due to sequential acquisition was verified in a preliminary study. Fiducial marker-based IGRT was then performed in 10 scenarios. The residual registration error (RRE) was calculated on the basis of the differences in the coordinates of clips between the true position if not moved and the last position.Results: The frequencies of the phase differences in 0.0–0.99, 1.0–1.99, 2.0–2.99, 3.0–3.99, and 4.0–5.0 mm were 23%, 24%, 22%, 20%, and 11%, respectively. When assuming a clinical case, the mean RREs for all directions were within 1.0 mm, even if respiratory motion of 5 mm existed in two axes.Conclusions: For APBI with fiducial marker-based IGRT, the introduction of an image registration strategy that employs stepwise couch correction using at least three orthogonal images should be considered.

OC-0102: Reducing secondary lung cancer risk by optimized planning of accelerated partial breast irradiation

2020 ◽  
Vol 152 ◽  
pp. S48-S49
Author(s):  
N. Hoekstra ◽  
S. Habraken ◽  
A. Swaak-Kragten ◽  
S. Breedveld ◽  
J. Pignol ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Cancer Risk ◽  
Lung Cancer Risk ◽  
Accelerated Partial Breast Irradiation ◽  
Partial Breast Irradiation ◽  
Breast Irradiation

scholarly journals EP-1047: VMAT for accelerated partial breast irradiation (IPAS).

2013 ◽  
Vol 106 ◽  
pp. S400
Author(s):  
P. Fenoglietto ◽  
F. Boulbair ◽  
C. Lemanski ◽  
M. Charissoux ◽  
C. Llaccer
Keyword(s):  
Accelerated Partial Breast Irradiation ◽  
Partial Breast Irradiation ◽  
Breast Irradiation
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