Results 41 to 50 of about 27,465 (240)

Intra-fraction motion of pelvic oligometastases and feasibility of PTV margin reduction using MRI guided adaptive radiotherapy

Frontiers in Oncology, 2023
PurposeThis study assesses the impact of intra-fraction motion and PTV margin size on target coverage for patients undergoing radiation treatment of pelvic oligometastases. Dosimetric sparing of the bowel as a function of the PTV margin is also evaluated.
Jeffrey Snyder, Blake Smith, Joel St-Aubin, David Dunkerley, Andrew Shepard, Joseph Caster, Daniel Hyer   +6 more
doaj   +1 more source

A Proposal of Image Sensors for PTV

Journal of the Visualization Society of Japan, 1999
PTV( Particle Tracking Velocimetry) is applied to images with moving particle images. Properties required for image sensors to analyze movements of scattered particles are discussed. Much higher frame rate than 30 pps is essential, which is realized by parallel readout architecture.
Etoh, Takeharu, Shirasu, Toshinari, Takehara, Kohsei   +2 more
openaire   +2 more sources

Junctioning longitudinally adjacent PTVs with Helical TomoTherapy [PDF]

Journal of Applied Clinical Medical Physics, 2010
Irradiation of longitudinally adjacent PTVs with Helical TomoTherapy (HT) may be clinically necessary, for example in treating a recurrent PTV adjacent to a previously‐treated volume. In this work, the parameters which influence the cumulative dose distribution resulting from treating longitudinally adjacent PTVs are examined, including field width ...
Garcia, Lourdes M., Gerig, Lee H., Raaphorst, Peter, Wilkins, David   +3 more
openaire   +2 more sources

Stereotactic Body Radiotherapy (SBRT) of Previously Unirradiated Mucosal Head and Neck Squamous Cell Carcinoma (SCC)

Head &Neck, EarlyView.
ABSTRACT Purpose To evaluate the efficacy and safety of stereotactic body radiation therapy (SBRT) in previously untreated primary mucosal head and neck cancer (HNC) patients unfit for conventional radiation therapy. Materials and Methods Retrospective analysis of previously unirradiated primary SCC mucosal HNC patients treated with SBRT from 2011 to ...
Mohammed Aldohan, Irene Karam, Amir H. Safavi, Lee Chin, Liying Zhang, Ethan Gooanratne, Madette Galapin, Antoine Eskander, Kevin Higgins, Danny Enepekides, Ian Poon   +10 more
wiley   +1 more source

Gradual Colonic Impaction of a Chicken Bone Associated with Inflammatory Pseudotumor Formation and Nonocclusive Colon Ischemia

Case Reports in Radiology, 2014
Foreign body (FB) ingestion is a common clinical problem and most FBs pass through the gastrointestinal tract without the need for intervention. A wide spectrum of clinical presentations may be possible and these can be either acute or chronic.
Stefania Fosi, Simone Altobelli, Alessio Bindi, Massimo Villa, Flavio De Sanctis, Mauro Montuori, Edoardo Ricciardi, Piero Rossi, Giuseppe Petrella, Giovanni Simonetti   +9 more
doaj   +1 more source

A Highly Conserved Epitope (RNNQIPQDF) of Porcine teschovirus Induced a Group-Specific Antiserum: A Bioinformatics-Predicted Model with Pan-PTV Potential

Viruses, 2020
Porcine teschovirus (PTV) is an OIE-listed pathogen with 13 known PTV serotypes. Heterologous PTV serotypes frequently co-circulate and co-infect with another swine pathogen, causing various symptoms in all age groups, thus highlighting the need for a ...
Tung-Hsuan Tsai, Chia-Yi Chang, Fun-In Wang   +2 more
doaj   +1 more source

Identification of a novel porcine Teschovirus 2 strain as causative agent of encephalomyelitis in suckling piglets with high mortality in China

BMC Veterinary Research, 2023
Background Porcine Teschovirus (PTV), also named Teschovirus A, is prevalent in pig populations, mainly causing neurological symptoms, diarrhea, pneumonia, and reproductive failure, however the morbidity and mortality are usually low in pig farms.
Wenqi Liang, Xiangdong Wu, Zhen Ding, Shengwei Zhong, Xinjie Qian, Pei Ye, Hao Liu, Zheng Chen, Jinhua Zhang, Huabin Cao, Guoliang Hu, Junrong Luo, Zuohua Li, Nengshui Ding, Ruiming Hu   +14 more
doaj   +1 more source

Hypervision Proton Surgery: The Future Direction of Proton Therapy

iNew Medicine, EarlyView.
ABSTRACT Proton beams provide unique physical advantages characterized by a low entrance dose, negligible exit dose, and a sharp Bragg peak, which enable superior sparing of normal tissues and support safe dose escalation for improved tumor control. However, conventional photon‐based fractionation remains widely used in proton therapy, where prolonged ...
Li Li, Shuanghu Yuan
wiley   +1 more source

Skid resistance of road markings: literature review and field test results

Roads and Bridges, 2023
Skid resistance of road markings belongs to their important performance parameters, significantly influencing the safety of all road users, particularly when the roadway is wet – yet it is very seldom addressed.
Tomasz E. Burghardt, Birgit Köck, Anton Pashkevich, Alexander Fasching   +3 more
doaj   +1 more source

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