Zobrazeno 1 - 10
of 58
pro vyhledávání: '"H. Helen Liu"'
Autor:
Joe Y. Chang, H. Helen Liu, Roland L. Bassett, Zhongxing Liao, Isis Gayed, Ritsuko Komaki, Xiong Wei, Syed Wamique Yusuf
Publikováno v:
Journal of Thoracic Oncology. 4(2):179-184
Objective: We evaluated the prevalence of myocardial perfusion defects using myocardial perfusion imaging (MPI) after chemoradiation or radiation therapy (CRT/RT) in lung cancer patients and described their patterns in relation to tumor location. Met
Autor:
Xiong Wei, Mary K. Martel, Ritsuko Komaki, Susan L. Tucker, Shulian Wang, Zhongxing Liao, Hekun Jin, Radhe Mohan, H. Helen Liu
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 72:568-574
Purpose: To introduce a version of the Lyman normal-tissue complication probability (NTCP) model adapted to incorporate censored time-to-toxicity data and clinical risk factors and to apply the generalized model to analysis of radiation pneumonitis (
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 71:1537-1546
To investigate potential dose calculation errors in the low-dose regions and identify causes of such errors for intensity-modulated radiotherapy (IMRT).The IMRT treatment plans of 23 patients with lung cancer and mesothelioma were reviewed. Of these
Autor:
Ann H. Klopp, Homer A. Macapinlac, M. Kara Bucci, Joe Y. Chang, Peter A Balter, Susan L. Tucker, H. Helen Liu, James D. Cox, Erik P. Sulman, Ritsuko Komaki
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 69:1409-1416
Purpose Dosimetric studies suggested several advantages to defining the radiotherapy target by using positron-emission tomography (PET)/computed tomography (CT) compared with CT alone. We investigated patterns of treatment failure in patients treated
Autor:
James D. Cox, Joe Y. Chang, Radhe Mohan, Yerko Borghero, Brian P. Yaremko, Thomas Guerrero, Ritsuko Komaki, Yoshiyuki Shioyama, Isis Gayed, William D. Erwin, Melenda Jeter, Siyoung Jang, X. S. Wang, Zhongxing Liao, H. Helen Liu
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 68:1349-1358
Purpose: To assess quantitatively the impact of incorporating functional lung imaging into intensity-modulated radiation therapy planning for locally advanced non-small cell lung cancer (NSCLC). Methods and Materials: Sixteen patients with advanced-s
Publikováno v:
Medical Physics. 34:1388-1397
Because of complex dose distributions and dose gradients that are created in three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated radiation therapy (IMRT), photon- and electron-energy spectra might change significantly with spati
Autor:
H. Helen Liu, Susan L. Tucker, Ritsuko Komaki, Shulian Wang, Xiong Wei, Radhe Mohan, Zhongxing Liao, James D. Cox
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 66:754-761
The aim of this study was to investigate the effect of radiation dose distribution in the lung on the risk of postoperative pulmonary complications among esophageal cancer patients.We analyzed data from 110 patients with esophageal cancer treated wit
Autor:
Radhe Mohan, Zhongxing Liao, Susan L. Tucker, Ritsuko Komaki, James D. Cox, H. Helen Liu, Xiong Wei, Chaosu Hu
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 66:100-107
Purpose: To determine the risk factors for acute esophagitis (AE) in non–small-cell lung cancer (NSCLC) patients treated with concurrent chemotherapy (CCT) and three-dimensional conformal radiotherapy (3D-CRT). Methods and Materials: Clinical data
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 65:561-572
Purpose: To optimize beam angles and reduce the number of beams used for intensity-modulated radiation therapy (IMRT) of non–small-cell lung cancer (NSCLC). Methods and Materials: An exhaustive search scheme was used to perform beam angle optimizat
Publikováno v:
Medical Physics. 33:770-781
A multileaf collimator (MLC) model, "MATMLC," was developed to simulate MLCs for Monte Carlo (MC) dose calculations of intensity-modulated radiation therapy (IMRT). This model describes MLCs using matrices of regions, each of which can be independent