scholarly journals Evaluation of automatic contour propagation in T2-weighted 4DMRI for normal-tissue motion assessment using internal organ-at-risk volume (IRV)

2018 ◽  
Vol 19 (5) ◽  
pp. 598-608 ◽  
Author(s):  
Jingjing Zhang ◽  
Svetlana Markova ◽  
Alejandro Garcia ◽  
Kirk Huang ◽  
Xingyu Nie ◽  
...  
Keyword(s):  
At Risk ◽  
Normal Tissue ◽  
Contour Propagation ◽  
Organ At Risk ◽  
Motion Assessment ◽  
Tissue Motion ◽  
Automatic Contour

Automatic Contour Propagation of Organs-at-Risk on Serial MRIs and Dosimetric Implications in Glioblastoma Patients Undergoing Chemo-Radiation

2018 ◽  
Vol 102 (3) ◽  
pp. e349
Author(s):  
S.L. Lee ◽  
J. Stewart ◽  
S.D. Myrehaug ◽  
A. Sahgal ◽  
M.E. Ruschin ◽  
...  
Keyword(s):  
At Risk ◽  
Organs At Risk ◽  
Contour Propagation ◽  
Automatic Contour

scholarly journals Normal Tissue Complication Probability (NTCP) Modelling of Severe Acute Mucositis using a Novel Oral Mucosal Surface Organ at Risk

2017 ◽  
Vol 29 (4) ◽  
pp. 263-273 ◽  
Author(s):  
J.A. Dean ◽  
L.C. Welsh ◽  
K.H. Wong ◽  
A. Aleksic ◽  
E. Dunne ◽  
...  
Keyword(s):  
At Risk ◽  
Normal Tissue ◽  
Normal Tissue Complication Probability ◽  
Mucosal Surface ◽  
Organ At Risk ◽  
Ntcp Modelling

scholarly journals Impact of Daily Plan Adaptation on Organ-At-Risk Normal Tissue Complication Probability for Adrenal Lesions undergoing Stereotactic Ablative Radiation Therapy

2021 ◽  
Author(s):  
Hanbo Chen ◽  
Famke L. Schneiders ◽  
Anna M. E. Bruynzeel ◽  
Frank J. Lagerwaard ◽  
John R. van Sornsen de Koste ◽  
...  
Keyword(s):  
At Risk ◽  
Radiation Therapy ◽  
Normal Tissue ◽  
Normal Tissue Complication Probability ◽  
Plan Adaptation ◽  
Organ At Risk ◽  
Daily Plan ◽  
Stereotactic Ablative Radiation Therapy

scholarly journals Improved dosimetric accuracy with semi‐automatic contour propagation of organs‐at‐risk in glioblastoma patients undergoing chemoradiation

2019 ◽  
Vol 20 (12) ◽  
pp. 45-53 ◽  
Author(s):  
Sangjune Lee ◽  
James Stewart ◽  
Young Lee ◽  
Sten Myrehaug ◽  
Arjun Sahgal ◽  
...  
Keyword(s):  
At Risk ◽  
Organs At Risk ◽  
Contour Propagation ◽  
Dosimetric Accuracy ◽  
Automatic Contour

scholarly journals Impact of Geometric Uncertainties on Dose Distribution During Intensity Modulated Radiotherapy of Head-and-neck Cancer: The Need for a Planning Target Volume and A Planning Organ-at-Risk Volume

2006 ◽  
Vol 13 (3) ◽  
pp. 108-115 ◽  
Author(s):  
O. Ballivy ◽  
W. Parker ◽  
T. Vuong ◽  
G. Shenouda ◽  
H. Patrocinio
Keyword(s):  
Spinal Cord ◽  
At Risk ◽  
Neck Cancer ◽  
Intensity Modulated Radiotherapy ◽  
Target Volume ◽  
Ct Scans ◽  
Target Coverage ◽  
Geometric Uncertainties ◽  
Intensity Modulated ◽  
Organ At Risk

We assessed the effect of geometric uncertainties on target coverage and on dose to the organs at risk (OARS) during intensity-modulated radiotherapy (IMRT) for head-and-neck cancer, and we estimated the required margins for the planning target volume (PTV) and the planning organ-at-risk volume (PRV). For eight headand- neck cancer patients, we generated IMRT plans with localization uncertainty margins of 0 mm, 2.5 mm, and 5.0 mm. The beam intensities were then applied on repeat computed tomography (CT) scans obtained weekly during treatment, and dose distributions were recalculated. The dose–volume histogram analysis for the repeat CT scans showed that target coverage was adequate (V100 ≥ 95%) for only 12.5% of the gross tumour volumes, 54.3% of the upper-neck clinical target volumes (CTVS), and 27.4% of the lower-neck CTVS when no margins were added for PTV. The use of 2.5-mm and 5.0-mm margins significantly improved target coverage, but the mean dose to the contralateral parotid increased from 25.9 Gy to 29.2 Gy. Maximum dose to the spinal cord was above limit in 57.7%, 34.6%, and 15.4% of cases when 0-mm, 2.5-mm, and 5.0-mm margins (respectively) were used for PRV. Significant deviations from the prescribed dose can occur during IMRT treatment delivery for headand- neck cancer. The use of 2.5-mm to 5.0-mm margins for PTV and PRV greatly reduces the risk of underdosing targets and of overdosing the spinal cord.

scholarly journals ASSESSING THE SPLEEN AS AN ORGAN AT RISK IN RADIOTHERAPY AND ITS RELATIONSHIP WITH RADIATION-INDUCED LYMPHOPENIA: A RETROSPECTIVE STUDY AND LITERATURE REVIEW

2021 ◽  
pp. 100761
Author(s):  
Michire Alexandru ◽  
Anghel Rodica ◽  
Georgescu Dragos-Eugen ◽  
Georgescu Mihai-Teodor
Keyword(s):  
At Risk ◽  
Retrospective Study ◽  
Literature Review ◽  
Radiation Induced ◽  
Organ At Risk

Normal-tissue toxicities of thoracic radiation therapy: esophagus, lung, and spinal cord as organs at risk

2004 ◽  
Vol 18 (1) ◽  
pp. 131-160 ◽  
Author(s):  
Maria Werner-Wasik ◽  
Xiaoli Yu ◽  
Lawrence B Marks ◽  
Timothy E Schultheiss
Keyword(s):  
Spinal Cord ◽  
At Risk ◽  
Radiation Therapy ◽  
Normal Tissue ◽  
Organs At Risk ◽  
Thoracic Radiation

Automatic Contour Propagation in Cine Cardiac Magnetic Resonance Images

2006 ◽  
Vol 25 (11) ◽  
pp. 1472-1482 ◽  
Author(s):  
G. Hautvast ◽  
S. Lobregt ◽  
M. Breeuwer ◽  
F. Gerritsen
Keyword(s):  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Images ◽  
Contour Propagation ◽  
Cine Cardiac Magnetic Resonance ◽  
Automatic Contour

Anterior Myocardial Territory May Replace the Heart as Organ at Risk in Intensity-Modulated Radiotherapy for Left-Sided Breast Cancer

2012 ◽  
Vol 82 (5) ◽  
pp. 1689-1697 ◽  
Author(s):  
Wenyong Tan ◽  
Dong Liu ◽  
Chenbin Xue ◽  
Jiaozhen Xu ◽  
Beihui Li ◽  
...  
Keyword(s):  
Breast Cancer ◽  
At Risk ◽  
Intensity Modulated Radiotherapy ◽  
Intensity Modulated ◽  
Organ At Risk

OC-0314 Panoptes - a novel tool for teaching organ at risk delineation to radiotherapy technologists

2021 ◽  
Vol 161 ◽  
pp. S223-S225
Author(s):  
J. Scheurleer ◽  
E.M. Vasquez Osorio ◽  
E. Assendelft ◽  
A. Bel ◽  
I. van Dijk ◽  
...  
Keyword(s):  
At Risk ◽  
Organ At Risk
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