Results 31 to 40 of about 13,160 (218)

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

AAPM Medical Physics Practice Guideline 2.a: Commissioning and quality assurance of X-ray–based image-guided radiotherapy systems [PDF]

, 2014
The American Association of Physicists in Medicine (AAPM) is a nonprofit professional society whose primary purposes are to advance the science, education, and professional practice of medical physics.
Aapm Staff, Andrew R Jensen, Arthur J. Olch, C. Parker, Ching-chong Jack Yang, D. Fontenot, Hassaan Alkhatib, Jeffrey A, Lynne A. Fairobent, Steven P. Mccullough, Task Group   +10 more
core   +1 more source

On voxel-by-voxel accumulated dose for prostate radiation therapy using deformable image registration. [PDF]

, 2015
Since delivered dose is rarely the same with planned, we calculated the delivered total dose to ten prostate radiotherapy patients treated with rectal balloons using deformable dose accumulation (DDA) and compared it with the planned dose.
Bender, Edward T., Hardcastle, Nicholas, Jeong, Kyoungkeun, Ritter, Mark A., Tomé, Wolfgang A., Yu, Jialu   +5 more
core   +2 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 survey of the Australasian clinical medical physics and biomedical engineering workforce [PDF]

, 2007
A survey of the medical physics and biomedical engineering workforce was carried out in 2006. 495 positions(equivalent to 478 equivalent full time (EFT) positions) were captured by the survey.
Round, W. Howell
core   +2 more sources

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

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

Technical Note: Enhancing Soft Tissue Contrast And Radiation‐Induced Image Changes With Dual‐Energy CT For Radiation Therapy [PDF]

, 2018
Purpose The purpose of this work is to investigate the use of low‐energy monoenergetic decompositions obtained from dual‐energy CT (DECT) to enhance image contrast and the detection of radiation‐induced changes of CT textures in pancreatic cancer ...
Alvarez, Chen, Feng, Frellessen, Hardie, Herfarth, Johnson, Kalra, Kaup, Mayer, Morrow, Noid, Schneider, Sudarski, Sudarski, Watanabe, Wichmann, Yu   +17 more
core   +2 more sources

Australian Society of Medical Imaging and Radiation Therapy Image Registration in Radiation Therapy Position Paper

Journal of Medical Radiation Sciences, EarlyView.
The ASMIRT Image Registration Working Party outlines the critical role of radiation therapists in performing, assessing and documenting rigid and deformable image registration across treatment planning, delivery and adaptive workflows. The position paper emphasises consistent nomenclature, robust QA processes, strong collaboration with diagnostic ...
Tamara Barry, Huong Nguyen, Laurel Schmidt, Kate Stewart, Nigel Anderson   +4 more
wiley   +1 more source