Results 31 to 40 of about 12,952 (199)

Factors Affecting Isocenter Displacement and Planning Target Volume Margin for Patients With Rectal Cancer Receiving Radiation Therapy

Advances in Radiation Oncology, 2022
Purpose: Setup errors are inherent in the process of daily radiation therapy (RT) delivery. Pelvic RT for rectal cancer is one of the body sites associated with the largest shift among other body sites.
Reham Mohamed, MD, Abousaleh Abousaleh Elawadi, PhD, Nwaf Alkhanein, MBBS, Muslihah Alharth, BSc, Mushabbab Asiri, MD   +4 more
doaj   +1 more source

Analyzing human decisions in IGRT of head-and-neck cancer patients to teach image registration algorithms what experts know [PDF]

, 2017
Background: In IGRT of deformable head-and-neck anatomy, patient setup corrections are derived by rigid registration methods. In practice, experienced radiation therapists often correct the resulting vectors, thus indicating a different prioritization of
Bendl, Rolf, Bierstedt, Christian, Bougatf, Nina, Debus, Jürgen, Giske, Kristina, Oetzel, Dieter, Stoiber, Eva Maria, Teske, Hendrik   +7 more
core   +1 more source

Clinical and Dosimetric Comparison Between Non-image Guided Radiation Therapy and Fiducial-Based Image Guided Radiation Therapy With or Without Reduced Margin in Intensity Modulated Radiation Therapy for Prostate Cancer

Advances in Radiation Oncology
Purpose: This study aimed to compare the outcomes and toxicities between patients treated with image guided radiation therapy (IGRT) using fiducial markers and non-IGRT in intensity modulated radiation therapy (IMRT) for prostate cancer.
Itsuko Serizawa, PhD, Takuyo Kozuka, PhD, Takashi Soyano, MD, Kazuma Sasamura, MD, Tatsuya Kamima, Bsc, Hiroaki Kunogi, PhD, Nozomi Kurihara, MPh, Noboru Numao, PhD, Shinya Yamamoto, PhD, Junji Yonese, PhD, Yasuo Yoshioka, PhD   +10 more
doaj   +1 more source

Adaptive Visual Saliency Feature Enhancement of CBCT for Image-Guided Radiotherapy

Applied Sciences, 2023
Unlike the high imaging radiation dose of computed tomography (CT), cone-beam CT (CBCT) has smaller radiation dose and presents less harm to patients. Therefore, CBCT is often used for target delineation, dose planning, and postoperative evaluation in ...
Lisiqi Xie, Kangjian He, Dan Xu
doaj   +1 more source

Image contrast assessment of metal-based nanoparticles as applications for image-guided radiation therapy

Physics and Imaging in Radiation Oncology, 2021
Metal-based nanoparticles (NPs) have been extensively studied for dose enhancement applications in radiation therapy. This study investigated the utility of such NPs for image-guided radiation therapy (IGRT).
Masao Nakayama, Hiroaki Akasaka, Eiichi Miyazaki, Yoshihiro Goto, Yuya Oki, Yosuke Kawate, Kenta Morita, Ryohei Sasaki   +7 more
doaj   +1 more source

Quasiperiodic tilings under magnetic field

, 2002
We study the electronic properties of a two-dimensional quasiperiodic tiling, the isometric generalized Rauzy tiling, embedded in a magnetic field. Its energy spectrum is computed in a tight-binding approach by means of the recursion method.
Abilio, Alexander, Arai, Behrooz, Behrooz, Claro, de Gennes, Hatakeyama, Hatakeyama, Haydock, Hofstadter, Jagannathan, Julien Vidal, Ketzmerick, Ketzmerick, Leforestier, Lin, Niu, Nori, Paige, Pannetier, Passaro, Peierls, Piéchon, Rammal, Roche, Rémy Mosseri, Schwabe, Springer, Triozon, Vidal, Vidal, Vidal, Wang, Xiao, Yuan, Zhong   +36 more
core   +1 more source

The Potential Role of Magnetic Resonance Spectroscopy in Image-Guided Radiotherapy [PDF]

, 2014
Magnetic resonance spectroscopy (MRS) is a non-invasive technique to detect metabolites within the normal and tumoral tissues. The ability of MRS to diagnose areas of high metabolic activity linked to tumor cell proliferation is particularly useful for ...
Altdorfer, Gabor, Chi, Alexander, Godinez, Juan, Jendrasiak, Gordon, Karlsson, Ulf, Kerr, Christine, Khan, Rihan, Kim, Lyndon, Mills, Melissa, Nguyen, Mai Lin, Nguyen, Nam Phong, Nour, Sherif G., Sroka, Thomas, The International Geriatric Radiotherapy Group, Willows, Brooke   +14 more
core   +3 more sources

IGRT versus non-IGRT for postoperative head-and-neck IMRT patients: dosimetric consequences arising from a PTV margin reduction

Radiation Oncology, 2012
Background To evaluate the impact of image-guided radiation therapy (IGRT) versus non-image-guided radiation therapy (non-IGRT) on the dose to the clinical target volume (CTV) and the cervical spinal cord during fractionated intensity-modulated radiation
Schwarz Michael, Giske Kristina, Stoll Armin, Nill Simeon, Huber Peter E, Debus Jürgen, Bendl Rolf, Stoiber Eva M   +7 more
doaj   +1 more source

A prosztatadaganatos betegek sugárterápiájának mikroköltség-számítása [PDF]

, 2016
Absztrakt Bevezetés: A technológia fejlődése új lehetőségeket nyitott a prosztatadaganat sugárkezelése terén, ugyanakkor kevéssé ismert a korszerű technológia költsége. Célkitűzés: Jelen elemzés
Boncz, Imre, Endrei, Dóra, Kaló, Zoltán, Mangel, László, Zemplényi, Antal Tamás   +4 more
core   +1 more source

Safety considerations for IGRT: Executive summary

Practical Radiation Oncology, 2013
Radiation therapy is an effective cancer treatment that is constantly being transformed by technological innovation. Dedicated devices for fraction-by-fraction imaging and guidance within the treatment room have enabled image guided radiation therapy (IGRT) allowing clinicians to pursue highly conformal dose distributions, higher dose prescriptions ...
Radiation Medicine Program, Princess Margaret Cancer Centre/UHN, Toronto, Ontario, Canada ( host institution ), Jaffray, David A. ( author ), Langen, Katja M. ( author ), Mageras, Gikas ( author ), Dawson, Laura A. ( author ), Yan, Di ( author ), EdD, Robert Adams ( author ), Mundt, Arno J. ( author ), Fraass, Benedick ( author )   +8 more
openaire   +3 more sources