scholarly journals Interfraction variation in lung tumor position with abdominal compression during stereotactic body radiotherapy

2013 ◽  
Vol 40 (9) ◽  
pp. 091718 ◽  
Author(s):  
Wambaka Ange Mampuya ◽  
Mitsuhiro Nakamura ◽  
Yukinori Matsuo ◽  
Nami Ueki ◽  
Yusuke Iizuka ◽  
...  
Keyword(s):  
Stereotactic Body Radiotherapy ◽  
Lung Tumor ◽  
Abdominal Compression

Clinical outcome of stereotactic body radiotherapy of 54 Gy in nine fractions for patients with localized lung tumor using a custom-made immobilization system

2007 ◽  
Vol 25 (6) ◽  
pp. 289-294 ◽  
Author(s):  
Masahiko Aoki ◽  
Yoshinao Abe ◽  
Hidehiro Kondo ◽  
Yoshiomi Hatayama ◽  
Hideo Kawaguchi ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Stereotactic Body Radiotherapy ◽  
Lung Tumor ◽  
Custom Made

Interfractional Variations of Lung Tumor in the Stereotactic Body Radiotherapy with Cine EPID at Treatment

2010 ◽  
Vol 78 (3) ◽  
pp. S682
Author(s):  
Y. Ueda ◽  
K. Tsujii ◽  
K. Shirai ◽  
M. Miyazaki ◽  
K. Miyagi ◽  
...  
Keyword(s):  
Stereotactic Body Radiotherapy ◽  
Lung Tumor

SU-E-J-40: Automated Estimation of Lung Tumor Locations for Tumor-Based Patient Setup Using MV-CBCT Images in Stereotactic Body Radiotherapy

2013 ◽  
Vol 40 (6Part7) ◽  
pp. 158-158
Author(s):  
S Yoshidome ◽  
H Arimura ◽  
K Nakamura ◽  
Y Shioyama ◽  
K Atsumi ◽  
...  
Keyword(s):  
Stereotactic Body Radiotherapy ◽  
Lung Tumor ◽  
Patient Setup

Variability of Tumor Motion in 4DCT: The Effects of Abdominal Compression on Lung Tumor Displacement

2012 ◽  
Vol 84 (3) ◽  
pp. S562
Author(s):  
S. Rosenberg ◽  
S.K. Jabbour ◽  
N.J. Yue ◽  
A. Rasheed ◽  
B.G. Haffty ◽  
...  
Keyword(s):  
Lung Tumor ◽  
Tumor Motion ◽  
Abdominal Compression

SU-GG-J-58: Stereotactic Body Radiotherapy: Computer-Assisted Verification of a Lung Tumor Region Using EPID without Implanted Markers

2010 ◽  
Vol 37 (6Part10) ◽  
pp. 3158-3158
Author(s):  
H Arimura ◽  
Y Shioyama ◽  
K Nakamura ◽  
T Yoshitake ◽  
S Anai ◽  
...  
Keyword(s):  
Stereotactic Body Radiotherapy ◽  
Lung Tumor ◽  
Computer Assisted ◽  
Tumor Region

scholarly journals Prognostic impact of average iodine density assessed by dual-energy spectral imaging for predicting lung tumor recurrence after stereotactic body radiotherapy

2016 ◽  
Vol 57 (4) ◽  
pp. 381-386 ◽  
Author(s):  
Masahiko Aoki ◽  
Katsumi Hirose ◽  
Mariko Sato ◽  
Hiroyoshi Akimoto ◽  
Hideo Kawaguchi ◽  
...  
Keyword(s):  
Local Control ◽  
Stereotactic Body Radiotherapy ◽  
Lung Tumor ◽  
Lung Metastases ◽  
Prognostic Significance ◽  
Lung Tumors ◽  
Dual Energy ◽  
Hypoxic Cell ◽  
Prognostic Impact ◽  
Lung Cancers

Abstract The purpose of this study was to investigate the prognostic significance of average iodine density as assessed by dual-energy computed tomography (DE-CT) for lung tumors treated with stereotactic body radiotherapy (SBRT). From March 2011 to August 2014, 93 medically inoperable patients with 74 primary lung cancers and 19 lung metastases underwent DE-CT prior to SBRT of a total dose of 45–60 Gy in 5–10 fractions. Of these 93 patients, nine patients had two lung tumors. Thus, 102 lung tumors were included in this study. DE-CT was performed for pretreatment evaluation. Regions of interest were set for the entire tumor, and average iodine density was obtained using a dedicated imaging software and evaluated with regard to local control. The median follow-up period was 23.4 months (range, 1.5–54.5 months). The median value of the average iodine density was 1.86 mg/cm 3 (range, 0.40–9.27 mg/cm 3 ). Two-year local control rates for the high and low average iodine density groups divided by the median value of the average iodine density were 96.9% and 75.7% ( P = 0.006), respectively. Tumors with lower average iodine density showed a worse prognosis, possibly reflecting a hypoxic cell population in the tumor. The average iodine density exhibited a significant impact on local control. Our preliminary results indicate that iodine density evaluated using dual-energy spectral CT may be a useful, noninvasive and quantitative assessment of radio-resistance caused by presumably hypoxic cell populations in tumors.

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