Results 71 to 80 of about 69,595 (260)

The scenario-based generalization of radiation therapy margins

, 2015
We give a scenario-based treatment plan optimization formulation that is equivalent to planning with geometric margins if the scenario doses are calculated using the static dose cloud approximation.
Bokrantz, Rasmus, Fredriksson, Albin
core   +1 more source

Comparison of transabdominal ultrasound and electromagnetic transponders for prostate localization. [PDF]

, 2010
The aim of this study is to compare two methodologies of prostate localization in a large cohort of patients. Daily prostate localization using B-mode ultrasound has been performed at the Nebraska Medical Center since 2000.
Enke, Charles A, Foster, Ryan D, Kerkhoff, Andrew, Kupelian, Patrick A, Li, Haisen S, Solberg, Timothy D, Willoughby, Twyla R   +6 more
core   +2 more sources

Comparative Evaluation of Four Stereotactic Radiosurgery Planning Approaches for Treatment of Posterior Choroidal Melanoma

Journal of Medical Radiation Sciences, EarlyView.
This study evaluated four stereotactic radiosurgery planning approaches for posterior choroidal melanoma (CM). Analysis of thirteen CM cases resulted in a clinically meaningful reduction in dose to the brain for Brainlab Elements modulated arcs (BE) and Varian Eclipse HyperArc modulated arcs (HA) compared to Brainlab iPlan dynamic conformal arc therapy
Robert Nigro, Kenton Thompson, Cathy Markham, Adam U. Yeo, Daniel Sapkaroski, Claire Phillips   +5 more
wiley   +1 more source

Spontaneous Ureteral Rupture Diagnosis and Treatment

Case Reports in Radiology, 2013
Rupture of the urinary collecting system associated with perinephric or retroperitoneal extravasation of the urine is an unusual condition and it is commonly associated with renal obstructing disease.
E. Pampana, S. Altobelli, M. Morini, A. Ricci, S. D'Onofrio, G. Simonetti   +5 more
doaj   +1 more source

Respiratory-gated (4D) contrast-enhanced FDG PET-CT for radiotherapy planning of lower oesophageal carcinoma: Feasibility and impact on planning target volume [PDF]

, 2017
Background: To assess the feasibility and potential impact on target delineation of respiratory-gated (4D) contrast-enhanced 18 Fluorine fluorodeoxyglucose (FDG) positron emission tomography - computed tomography (PET-CT), in the treatment planning ...
A Pépin, A Sindoni, Andrew Scarsbrook, BP Yaremko, CN Bowden, CT Muijs, CT Mujis, EJ Somer, F le Grange, Ganesh Radhakrishna, Garry McDermott, Gillian Ward, J Callahan, JA Lee, JJ You, JM Findlay, Karen Marshall, KL Zhao, L Guerra, LR Dice, M Aristophanous, MP MacManus, N Figura, Patrick Murray, R Jena, R Shridhar, Rebecca Goody, RJ Cohen, Robin Prestwich, S Mukherjee, S Mukherjee, T Crosby, T Shepherd, W Wang, Y Guo, YC Wang, YL Guo   +36 more
core   +2 more sources

Intrafraction motion and impact of margin reduction for MR‐Linac online adaptive radiotherapy for pancreatic cancer treatments

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 17-24, March 2025.
This analysis included quantification of intrafraction motion in pancreas stereotactic ablative radiotherapy treated on the MR‐Linac, leading to the development of adjusted (PTV) margins. Intrafraction motion indicated an average target displacement of 1–3 mm, resulting in an adjusted PTV margin of 2 mm in the right–left and superior–inferior ...
Ashleigh Fasala, Madeline Carr, Yolanda Surjan, Parmoun Daghigh, Jeremy de Leon, Abbey Burns, Vikneswary Batumalai   +6 more
wiley   +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.
Takeharu Etoh, Toshinari Shirasu, Kohsei Takehara   +2 more
openaire   +2 more sources

Technique considerations for implementing volumetric‐modulated arc therapy for total body irradiation within an Australian tertiary institution

Journal of Medical Radiation Sciences, Volume 72, Issue 1, Page 165-172, March 2025.
In 2020, our institution transitioned to the Eclipse™ treatment planning system and to Truebeam® linear accelerators with 6 MV and 10 MV energies. The linear accelerators were installed in smaller bunkers that could not accommodate 400 cm FAD. A multidisciplinary team within the institution was created to evaluate existing total body irradiation ...
Gabriella La Macchia, Clare Wan, Joshua Dass, Mandy Taylor, Gabor Neveri, Malgorzata Skorska   +5 more
wiley   +1 more source

Circular collimator arc versus dynamic conformal arc treatment planning for linac-based stereotactic radiosurgery of an intracranial small single lesion: a perspective of lesion asymmetry

Radiation Oncology, 2019
Background Although circular collimator arcs (CCA) and dynamic conformal arcs (DCA) are commonly used linear accelerator-based treatment planning techniques for intracranial stereotactic radiosurgery (SRS) of a small single lesion, these two techniques ...
Yongsook C. Lee, Yongbok Kim
doaj   +1 more source

Two novel porcine teschovirus strains as the causative agents of encephalomyelitis in the Netherlands

BMC Veterinary Research, 2020
Background Porcine teschovirus (PTV) circulates among wild and domesticated pig populations without causing clinical disease, however neuroinvasive strains have caused high morbidity and mortality in the past.
Sandra Vreman, Nermin Caliskan, Frank Harders, Jan Boonstra, Klaas Peperkamp, Cynthia K. Y. Ho, Wikke Kuller, Jeroen Kortekaas   +7 more
doaj   +1 more source