Search Results - "Mageras, Gikas"

Deep inspiration breath hold and respiratory gating strategies for reducing organ motion in radiation treatment by Mageras, Gikas S, Yorke, Ellen

“…We examine 2 strategies for reducing respiration-induced organ motion in radiation treatment: deep inspiration breath hold (DIBH) and respiratory gating. DIBH…”
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Are fiducial markers useful surrogates when using respiratory gating to reduce motion of gastroesophageal junction tumors? by Liu, Fenghong, Ng, Shu, Huguet, Florence, Yorke, Ellen D, Mageras, Gikas S, Goodman, Karyn A

“…Radiation therapy (RT) is an integral component of the management of gastroesophageal junction (GEJ) tumors. We evaluated the use of implanted radiopaque…”
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Kilovoltage Imaging of Implanted Fiducials to Monitor Intrafraction Motion With Abdominal Compression During Stereotactic Body Radiation Therapy for Gastrointestinal Tumors by Yorke, Ellen, PhD, Xiong, Ying, MD, Han, Qian, MD, Zhang, Pengpeng, PhD, Mageras, Gikas, PhD, Lovelock, Michael, PhD, Pham, Hai, PhD, Xiong, Jian-Ping, MS, Goodman, Karyn A., MD, MS

“…Purpose To assess intrafraction respiratory motion using a commercial kilovoltage imaging system for abdominal tumor patients with implanted fiducials and…”
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Respiratory gating for liver tumors: use in dose escalation by Wagman, Raquel, Yorke, Ellen, Ford, Eric, Giraud, Philippe, Mageras, Gikas, Minsky, Bruce, Rosenzweig, Kenneth

“…To determine the clinical impact of the Varian Real-Time Position Monitor (RPM) respiratory gating system for treatment of liver tumors. Ten patients with…”
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Technical aspects of the deep inspiration breath-hold technique in the treatment of thoracic cancer by Mah, D, Hanley, J, Rosenzweig, K E, Yorke, E, Braban, L, Ling, C C, Leibel, S A, Mageras, G

“…The goal of this paper is to describe our initial experience with the deep inspiration breath-hold (DIBH) technique in conformal treatment of non-small-cell…”
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Dosimetric effect of respiratory motion in external beam radiotherapy of the lung by Mechalakos, James, Yorke, Ellen, Mageras, Gikas S., Hertanto, Agung, Jackson, Andrew, Obcemea, Ceferino, Rosenzweig, Kenneth, Clifton Ling, C.

“…To study the effect of breathing motion on gross tumor volume (GTV) coverage for lung tumors using dose-volume histograms and relevant dosimetric indices…”
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Interfractional anatomic variation in patients treated with respiration-gated radiotherapy by Yorke, Ellen, Rosenzweig, Kenneth E, Wagman, Raquel, Mageras, Gikas S

“…As quality assurance for respiration-gated treatments using the Varian RPM system, we monitor interfractional diaphragm variation throughout treatment using…”
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Technological advances in external-beam radiation therapy for the treatment of localized prostate cancer by Leibel, Steven A, Fuks, Zvi, Zelefsky, Michael J, Hunt, Margie, Burman, Chandra M, Mageras, Gikas S, Chui, Chen-Shou, Jackson, Andrew, Amols, Howard I, Ling, C.Clifton

“…The relative inability of conventional radiotherapy to control localized prostate cancer results from resistance of subpopulations of tumor clonogens to dose…”
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Fluoroscopic evaluation of diaphragmatic motion reduction with a respiratory gated radiotherapy system by Mageras, G S, Yorke, E, Rosenzweig, K, Braban, L, Keatley, E, Ford, E, Leibel, S A, Ling, C C

“…We report on initial patient studies to evaluate the performance of a commercial respiratory gating radiotherapy system. The system uses a breathing monitor,…”
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Deep inspiration breath-hold technique for lung tumors: the potential value of target immobilization and reduced lung density in dose escalation by Hanley, J, Debois, M M, Mah, D, Mageras, G S, Raben, A, Rosenzweig, K, Mychalczak, B, Schwartz, L H, Gloeggler, P J, Lutz, W, Ling, C C, Leibel, S A, Fuks, Z, Kutcher, G J

“…This study evaluates the dosimetric benefits and feasibility of a deep inspiration breath-hold (DIBH) technique in the treatment of lung tumors. The technique…”
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Development of a semi-automatic alignment tool for accelerated localization of the prostate by Hua, Chiaho, Lovelock, D Michael, Mageras, Gikas S, Katz, Matthew S, Mechalakos, James, Lief, Eugene P, Hollister, Timothy, Lutz, Wendell R, Zelefsky, Michael J, Ling, Clifton C

“…Delivering high dose to prostate with external beam radiation has been shown to improve local tumor control. However, it has to be carefully performed to avoid…”
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Relative profile and dose verification of intensity-modulated radiation therapy by Chang, J, Mageras, G S, Chui, C S, Ling, C C, Lutz, W

“…To develop a quality assurance (QA) procedure to assess the intensity profile and dosimetry for intensity-modulated (IM) treatment fields using electronic…”
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Evaluation of rapid dose map acquisition of a scanning liquid-filled ionization chamber electronic portal imaging device by Chang, Jenghwa, Mageras, Gikas S, Ling, Clifton C

“…We evaluated the performance of a new dosimetry module in the LC250 scanning liquid-filled ionization chamber (SLIC) electronic portal imaging device (EPID)…”
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Intensity-modulated radiotherapy by Leibel, Steven A, Fuks, Zvi, Zelefsky, Michael J, Wolden, Suzanne L, Rosenzweig, Kenneth E, Alektiar, Kaled M, Hunt, Margie A, Yorke, Ellen D, Hong, Linda X, Amols, Howard I, Burman, Chandra M, Jackson, Andrew, Mageras, Gikas S, LoSasso, Thomas, Happersett, Laura, Spirou, Spiridon V, Chui, Chen-Shou, Ling, C Clifton

“…Intensity-modulated radiotherapy represents a recent advancement in conformal radiotherapy. It employs specialized computer-driven technology to generate dose…”
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Tumor Motion Control in the Treatment of Non Small Cell Lung Cancer by Rosenzweig, Kenneth E, Yorke, Ellen, Amols, Howard, Mageras, Gikas S, Giraud, Phillippe, Katz, Matthew S, Leibel, Steven A

“…Tumor motion due to respiration during radiation therapy for non-small cell lung cancer is a significant problem. This article reports on two techniques used…”
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Time trends in organ position and volume in patients receiving prostate three-dimensional conformal radiotherapy by Mechalakos, James G., Mageras, Gikas S., Zelefsky, Michael J., Lyass, Olga, van Herk, Marcel, Kooy, Hanne M., Leibel, Steven A., Ling, C.Clifton

“…Using multiple computed tomography (CT) scans, 50 patients undergoing prostate radiotherapy were tested for clinically significant time trends in the target…”
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Computerized design of target margins for treatment uncertainties in conformal radiotherapy by Mageras, G S, Fuks, Z, Leibel, S A, Ling, C C, Zelefsky, M J, Kooy, H M, van Herk, M, Kutcher, G J

“…We describe a computerized method of determining target margins for beam aperture design in conformal radiotherapy plans. The method uses previously measured…”
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Multi-class medical image segmentation using one-vs-rest graph cuts and majority voting by Hu, Yu-chi, Mageras, Gikas, Grossberg, Michael

“…Purpose: Semi-automatic image segmentation is still a valuable tool in clinical applications since it retains the expert oversights legally required. However,…”
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Kilovoltage imaging of implanted fiducials to monitor intrafraction motion with abdominal compression during stereotactic body radiotherapy for GI tumors by Yorke, Ellen, Xiong, Ying, Han, Qian, Zhang, Pengpeng, Mageras, Gikas, Lovelock, Michael, Pham, Hai, Xiong, Jian-Ping, Goodman, Karyn A.

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Semi-automatic medical image segmentation with adaptive local statistics in Conditional Random Fields framework by Hu, Yu-Chi J., Grossberg, Michael D., Mageras, Gikas S.

“…Planning radiotherapy and surgical procedures usually require onerous manual segmentation of anatomical structures from medical images. In this paper we…”
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