Results 51 to 60 of about 13,160 (218)

Online adaptive radiotherapy in stereotactic body radiotherapy for pancreatic cancer patients

Scientific Reports
Stereotactic radiation therapy (SBRT) has emerged as a promising treatment modality for locally advanced pancreatic cancer. The aim of this study is to assess the dosimetric efficacy of online adaptive radiotherapy (ART) in comparison to image-guided ...
Dazhen Jiang, Jin Peng, Hui Xu, Dajiang Wang, Conghua Xie, Xiaoyong Wang, Fuxiang Zhou, Hui Liu   +7 more
doaj   +1 more source

An efficient and robust MRI-guided radiotherapy planning approach for targeting abdominal organs and tumours in the mouse.

PLoS ONE, 2017
IntroductionPreclinical CT-guided radiotherapy platforms are increasingly used but the CT images are characterized by poor soft tissue contrast. The aim of this study was to develop a robust and accurate method of MRI-guided radiotherapy (MR-IGRT ...
Veerle Kersemans, John S Beech, Stuart Gilchrist, Paul Kinchesh, Philip D Allen, James Thompson, Ana L Gomes, Zenobia D'Costa, Luke Bird, Iain D C Tullis, Robert G Newman, Aurelien Corroyer-Dulmont, Nadia Falzone, Abul Azad, Katherine A Vallis, Owen J Sansom, Ruth J Muschel, Borivoj Vojnovic, Mark A Hill, Emmanouil Fokas, Sean C Smart   +20 more
doaj   +1 more source

Impact of use of optical surface imaging on initial patient setup for stereotactic body radiotherapy treatments [PDF]

, 2019
Purpose To evaluate the effectiveness of surface image guidance (SG) for pre‐imaging setup of stereotactic body radiotherapy (SBRT) patients, and to investigate the impact of SG reference surface selection on this process.
Al‐Hallaq HA, Clow B, Gutiérrez AN, Paravati AJ   +3 more
core   +2 more sources

Impact of Intraprostatic Simultaneous Integrated Boost on Long‐Term Outcomes in Unfavorable Intermediate‐Risk Prostate Cancer Treated With Dose‐Escalated Radiotherapy and Short‐Term Androgen Deprivation Therapy

The Prostate, Volume 86, Issue 8, Page 961-969, June 2026.
ABSTRACT Background Unfavorable intermediate‐risk prostate cancer (UIR‐PCa) represents a biologically heterogeneous subgroup with a higher risk of recurrence compared with favorable intermediate‐risk disease. Contemporary management frequently includes dose‐escalated radiotherapy (RT) combined with short‐term androgen deprivation therapy (ADT). Whether
Cem Onal, Aysenur Elmali, Birhan Demirhan, Ertugrul Senturk, Petek Erpolat, Ozan Cem Guler   +5 more
wiley   +1 more source

CBCT-to-CT synthesis with a single neural network for head-and-neck, lung and breast cancer adaptive radiotherapy

, 2019
Purpose: CBCT-based adaptive radiotherapy requires daily images for accurate dose calculations. This study investigates the feasibility of applying a single convolutional network to facilitate CBCT-to-CT synthesis for head-and-neck, lung, and breast ...
Berg, Cornelis AT van den, Houweling, Anette C, Kotte, Alexis NTJ, Maspero, Matteo, Savenije, Mark HF, van Heijst, Tristan CF, Verhoeff, Joost JC   +6 more
core   +1 more source

Refining imaging parameters for dual‐energy cone‐beam computed tomography in image‐guided radiation therapy

Journal of Applied Clinical Medical Physics, Volume 27, Issue 5, May 2026.
Abstract Purpose To develop a dose estimation method for virtual monoenergetic images (VMIs) derived from sequential dual‐energy (DE) cone‐beam computed tomography (CBCT), enhancing image quality while reducing imaging dose. The goal is to generate VMIs with lower imaging dose than standard CBCT for future clinical applications.
Hyejoo Kang, Andrew Keeler, Matthew Georgesen, Jason Luce, Ha Nguyen, Mathias Lehmann, Sebastien Gros, John C. Roeske   +7 more
wiley   +1 more source

Proton beam therapy image-guided radiotherapy training for RTTs – Experience from a single institution

Technical Innovations & Patient Support in Radiation Oncology
This study investigates whether an Image-Guided Radiation Therapy (IGRT) workbook and Cone Beam Computed Tomography (CBCT) case studies enhances Radiation Therapists’ (RTTs) confidence analysing Proton Beam Therapy (PBT) CBCTs.
Jannath Shirin Kottakunnan, Samaneh Shoraka, Amy Dodd, Maria Kilkenny, Sarah Petty, Kathryn Osborn, Amanda Webster   +6 more
doaj   +1 more source

Difference in performance between 3D and 4D CBCT for lung imaging: a dose and image quality analysis. [PDF]

, 2016
The study was to describe and to compare the performance of 3D and 4D CBCT imaging modalities by measuring and analyzing the delivered dose and the image quality. The 3D (Chest) and 4D (Symmetry) CBCT Elekta XVI lung IGRT protocols were analyzed.
AAPM, Amer, Clements, Cooper, Dixon, Elekta, Feldkamp, François Bochud, Harsolia, Hyer, ICRU, ICRU, IEC, Jean Bourhis, Kathleen Smith, Li, Li, Lu, Lujan, Mageras, Mori, Ott, Pascal Monnin, Raphaël Moeckli, Seppenwoolde, Sheeba Thengumpallil, Shieh, Simon, Sonke, Sweeney, Vergalasova, Wolthaus, Yang, Zhang   +33 more
core   +1 more source

Impact of dose allocation between high‐ and low‐kV scans on virtual monoenergetic image quality in developmental dual‐energy cone‐beam CT for image‐guided radiotherapy

Journal of Applied Clinical Medical Physics, Volume 27, Issue 5, May 2026.
Abstract Background Dual‐energy cone‐beam CT (DE‐CBCT) offers potential as an advanced imaging technique for image‐guided radiation therapy (IGRT) through the production of virtual monoenergetic images (VMI). CBCT‐VMI can show enhanced image quality, with improved CNR and reduced nonuniformity artifacts, compared to polychromatic images.
Andrew Keeler, Luke Layman, Ha Nguyen, Jason Luce, Mathias Lehmann, John C. Roeske, Hyejoo Kang   +6 more
wiley   +1 more source

Radiation Therapy Medical Physics Review – Delivery, Interactions, Safety, Feasibility, and Head to Head Comparisons of the Leading Radiation Therapy Techniques [PDF]

, 2017
Radiation therapy uses high energy radiation to kill cancer cells. Radiation therapy for cancer treatment can take the form of photon therapy (using x-rays and gamma rays), or charged particle therapy including proton therapy and electron therapy. Within
Collins, Cielle
core   +1 more source