Richard J. Speight

MRI for radiotherapy guidelines: A comparative review of recommendations by IPEM topical report, AAPM TG‐284, and NCS report 36

Rob H.N. Tijssen, Steven Petit, Mariska de Smet, Z. van Kesteren et autres

In recent years, three international guidelines on the use of MRI in radiotherapy (RT) have been published, each offering valuable recommendations. However, the coexistence of multiple guidelines can make it challenging for practitioners to determine which to follow in specific clinical contexts. …

nl, us, gb (code pays fourni par la source)

IPEM Topical Report: a national survey of MRI use for external beam radiotherapy treatment planning in the UK: 2025 IPEM survey results

Richard J. Speight, Sarah Allwood‐Spiers, Michael J. Dubec, Ben George et autres

Magnetic resonance imaging (MRI) offers superior soft tissue contrast compared to computed tomography (CT), making it highly valuable in external beam radiotherapy (EBRT) planning. However, there are a number of barriers that have limited widespread use of MRI for EBRT planning in …

gb, au (code pays fourni par la source)

Clinical validation of using a commercial synthetic-computed tomography solution for brain MRI-only radiotherapy treatment planning

Lamyaa Aljaafari, Richard J. Speight, David L. Buckley, D. J. Bird et autres

Background and purpose: MRI-only radiotherapy treatment planning (RTP) relies on synthetic-CT (sCT) images for dose calculation. This study evaluates the clinical feasibility of using a commercial sCT solution in brain RTP, MRCAT Brain, focusing on dosimetric accuracy and patient setup verification. Method …

gb, sa (code pays fourni par la source)

3379 Clinical feasibility of using a commercial synthetic-CT solution for brain MRI-Only radiotherapy treatment planning

Lamyaa Aljaafari, Richard J. Speight, David L. Buckley, D. J. Bird

Evaluating the dosimetric and positioning accuracy of a deep learning based synthetic-CT model for liver radiotherapy treatment planning

Lamyaa Aljaafari, Richard J. Speight, David L. Buckley, Bashar M. Al‐Qaisieh et autres

Abstract Background and purpose. An MRI-only workflow requires synthetic computed tomography (sCT) images to enable dose calculation. This study evaluated the dosimetric and patient positioning accuracy of deep learning-generated sCT for liver radiotherapy. Methods and materials. sCT images were generated for eleven …

gb, sa, se (code pays fourni par la source)

A novel multimodality anthropomorphic phantom enhances compliance with quality assurance guidelines for magnetic resonance imaging in radiotherapy

Meshal Alzahrani, David Andrew Broadbent, Irvin Teh, Bashar M. Al‐Qaisieh et autres

Background and purpose: The use of magnetic resonance imaging (MRI) for radiotherapy (RT) simulation has grown, prompting quality assurance (QA) guidelines by the Institute of Physics and Engineering in Medicine (IPEM) and the American Association of Physicists in Medicine (AAPM). This study …

gb, sa (code pays fourni par la source)

An automated cone-beam CT dosimetric assessment pipeline for adaptive head and neck radiotherapy

Ruth P. Newton, Emily Russell, Marcus Tyyger, Christopher O’Hara et autres

Abstract Background and purpose: Adaptive radiotherapy (ART) is commonly used to mitigate effects of anatomical change during head and neck (H&N) radiotherapy. The process of identifying patients for ART can be subjective and resource-intensive. This feasibility project aims to design and validate …

gb, se (code pays fourni par la source)

Optimisation of cone beam CT radiotherapy imaging protocols using a novel 3D printed head and neck anthropomorphic phantom

Meshal Alzahrani, Christopher O’Hara, D. J. Bird, Jack P.C. Baldwin et autres

Abstract Objective. This study aimed to optimise Cone Beam Computed Tomography (CBCT) protocols for head and neck (H&N) radiotherapy treatments using a 3D printed anthropomorphic phantom. It focused on precise patient positioning in conventional treatment and adaptive radiotherapy (ART). Approach. Ten CBCT …

gb, sa (code pays fourni par la source)

Assessing suitability and stability of materials for a head and neck anthropomorphic multimodality (MRI/CT) phantoms for radiotherapy

Meshal Alzahrani, David Andrew Broadbent, Irvin Teh, Bashar M. Al‐Qaisieh et autres

Abstract Objective: This study aims to identify and evaluate suitable and stable materials for developing a head and neck anthropomorphic multimodality phantom for radiotherapy purposes. These materials must mimic human head and neck tissues in both computed tomography (CT) and magnetic resonance …

gb, sa (code pays fourni par la source)

Do anthropomorphic phantoms enhance compliance with the professional bodies' quality assurance guidelines for MRI in radiotherapy

Meshal Alzahrani, David Andrew Broadbent, Irvin Teh, Bashar M. Al‐Qaisieh et autres

With the increasing use of magnetic resonance imaging (MRI) in radiotherapy (RT), guidelines for the use of MRI in RT have recently been published, including recommendations for quality assurance (QA) tests. This project investigates whether anthropomorphic phantoms can be more beneficial to …

Risankizumab for Ulcerative Colitis

Edouard Louis, Stefan Schreiber, Remo Panaccione, Peter Bossuyt et autres

Importance: The clinical effects of risankizumab (a monoclonal antibody that selectively targets the p19 subunit of IL-23) for the treatment of ulcerative colitis are unknown. Objective: To evaluate the efficacy and safety of risankizumab when administered as an induction and a maintenance …

be, de, ca, ch, us, gb, fr, nl, jp, cn, it (code pays fourni par la source)

A systematic review of 4D magnetic resonance imaging techniques for abdominal radiotherapy treatment planning

Lamyaa Aljaafari, D. J. Bird, David L. Buckley, Bashar M. Al‐Qaisieh et autres

Background and purpose: Four-dimensional magnetic resonance imaging (4DMRI) has gained interest as an alternative to the current standard for motion management four-dimensional tomography (4DCT) in abdominal radiotherapy treatment planning (RTP). This review aims to assess the 4DMRI literature in abdomen, focusing on …

gb, sa (code pays fourni par la source)