Search Results - "McQuaid, Dualta"

Inter-Observer Variation in Delineating the Pharyngeal Constrictor Muscle as Organ at Risk in Radiotherapy for Head and Neck Cancer by Petkar, Imran, McQuaid, Dualta, Dunlop, Alex, Tyler, Justine, Hall, Emma, Nutting, Chris

“…To evaluate the inter-observer variation (IOV) in pharyngeal constrictor muscle (PCM) contouring, and resultant impact on dosimetry and estimated toxicity, as…”
Get full text

Comparison of CT number calibration techniques for CBCT-based dose calculation by Dunlop, Alex, McQuaid, Dualta, Nill, Simeon, Murray, Julia, Poludniowski, Gavin, Hansen, Vibeke N., Bhide, Shreerang, Nutting, Christopher, Harrington, Kevin, Newbold, Kate, Oelfke, Uwe

“…Purpose The aim of this work was to compare and validate various computed tomography (CT) number calibration techniques with respect to cone beam CT (CBCT)…”
Get full text

Daily adaptive radiotherapy for patients with prostate cancer using a high field MR-linac: Initial clinical experiences and assessment of delivered doses compared to a C-arm linac by Dunlop, Alex, Mitchell, Adam, Tree, Alison, Barnes, Helen, Bower, Lorna, Chick, Joan, Goodwin, Edmund, Herbert, Trina, Lawes, Rebekah, McNair, Helen, McQuaid, Dualta, Mohajer, Jonathan, Nilawar, Rahul, Pathmanathan, Angela, Smith, Gillian, Hanson, Ian, Nill, Simeon, Oelfke, Uwe

“…•MR-guided radiotherapy for prostate cancer can be delivered using a high filed MR-linac.•Comparison of estimated delivered dose between MR-guided adapted…”
Get full text

Predicting cervical cancer target motion using a multivariate regression model to enable patient selection for adaptive external beam radiotherapy by Wang, Lei, McQuaid, Dualta, Blackledge, Matthew, McNair, Helen, Harris, Emma, Lalondrelle, Susan

“…[Display omitted] •Motion of the uterine fundus tip was a poor predictor of interfraction motion.•After testing 83 potential variables, two multivariate models…”
Get full text

Noninvasive Imaging of Cycling Hypoxia in Head and Neck Cancer Using Intrinsic Susceptibility MRI by Panek, Rafal, Welsh, Liam, Baker, Lauren C J, Schmidt, Maria A, Wong, Kee H, Riddell, Angela M, Koh, Dow-Mu, Dunlop, Alex, Mcquaid, Dualta, d'Arcy, James A, Bhide, Shreerang A, Harrington, Kevin J, Nutting, Christopher M, Hopkinson, Georgina, Richardson, Cheryl, Box, Carol, Eccles, Suzanne A, Leach, Martin O, Robinson, Simon P, Newbold, Kate L

“…To evaluate intrinsic susceptibility (IS) MRI for the identification of cycling hypoxia, and the assessment of its extent and spatial distribution, in head and…”
Get full text

MRI-based Assessment of 3D Intrafractional Motion of Head and Neck Cancer for Radiation Therapy by Gurney-Champion, Oliver J., McQuaid, Dualta, Dunlop, Alex, Wong, Kee H., Welsh, Liam C., Riddell, Angela M., Koh, Dow-Mu, Oelfke, Uwe, Leach, Martin O., Nutting, Christopher M., Bhide, Shreerang A., Harrington, Kevin J., Panek, Rafal, Newbold, Kate L.

“…To determine the 3-dimensional (3D) intrafractional motion of head and neck squamous cell carcinoma (HNSCC). Dynamic contrast-enhanced magnetic resonance…”
Get full text

Brain-sparing methods for IMRT of head and neck cancer by Dunlop, Alex, Welsh, Liam, McQuaid, Dualta, Dean, Jamie, Gulliford, Sarah, Hansen, Vibeke, Bhide, Shreerang, Nutting, Chris, Harrington, Kevin, Newbold, Kate

“…Radical radiotherapy for head and neck cancer (HNC) may deliver significant doses to brain structures. There is evidence that this may cause a decline in…”
Get full text

Dosimetric explanations of fatigue in head and neck radiotherapy: An analysis from the PARSPORT Phase III trial by Gulliford, Sarah L, Miah, Aisha B, Brennan, Sinead, McQuaid, Dualta, Clark, Catharine H, Partridge, Mike, Harrington, Kevin J, Morden, James P, Hall, Emma, Nutting, Christopher M

“…Abstract Background An unexpected finding from the phase III parotid sparing radiotherapy trial, PARSPORT (ISRCTN48243537, CRUK/03/005), was a statistically…”
Get full text

Online adaptive radiotherapy for head and neck cancers on the MR linear Accelerator: Introducing a novel modified Adapt-to-Shape approach by Gupta, Amit, Dunlop, Alex, Mitchell, Adam, McQuaid, Dualta, Nill, Simeon, Barnes, Helen, Newbold, Kate, Nutting, Chris, Bhide, Shreerang, Oelfke, Uwe, Harrington, Kevin Joseph, Wong, Kee Howe

“…•The MR-Linac provides the tools to deliver online MR-guided Adaptive Radiotherapy•Adapt-to-Shape-Lite is a novel radiotherapy planning workflow on the Elekta…”
Get full text

Measurement and Incorporation of Laryngeal Motion Using cine-MRI on an MR-Linear Accelerator to Generate Radiation Therapy Plans for Early-stage Squamous Cell Cancers of the Glottis by Gupta, Amit, McQuaid, Dualta, Dunlop, Alex, Barnes, Helen, Mohajer, Jonathan, Smith, Gillian, Nartey, Jayde, Morrison, Kian, Herbert, Trina, Alexander, Sophie, McNair, Helen, Newbold, Kate, Nutting, Chris, Bhide, Shreerang, Harrington, Kevin Joseph, Wong, Kee Howe

“…Swallow-related motion of the larynx is most significant in the cranio-caudal directions and of` short duration. Conventional target definition for radical…”
Get full text

Geometric and dosimetric evaluation of the differences between rigid and deformable registration to assess interfraction motion during pelvic radiotherapy by White, Ingrid, McQuaid, Dualta, McNair, Helen, Dunlop, Alex, Court, Steven, Hopkins, Naomi, Thomas, Karen, Dearnaley, David, Bhide, Shree, Lalondrelle, Susan

“…•Target motion assessment using rigid and non-rigid strategies significantly differ.•Geometric changes are not accounted for in margins using rigid…”
Get full text

985: Significantly reduced OAR dose with CBCT guided online adaptive radiotherapy by Bolt, Matthew, Hollingdale, Rachel, Shelley, Charlotte, Goh, Chee, McQuaid, Dualta, Adams, Elizabeth

Get full text

An in silico comparative planning study investigating the predicted benefit of dysphagia-optimised volumetric arc therapy (Do-VMAT), relative to standard VMAT (S-VMAT), to reduce radiotherapy-associated dysphagia (RAD) in oropharyngeal cancers (OPC) by Petkar, Imran, Dunlop, Alex, McQuaid, Dualta, Nutting, Christopher

“…Abstract only e18540 Background: RAD is a significant treatment-related functional morbidity in OPC and is associated with irradiation of the pharyngeal…”
Get full text

Interobserver variability in target volume delineation for CT/MRI simulation and MRI-guided adaptive radiotherapy in rectal cancer by White, Ingrid, Hunt, Arabella, Bird, Thomas, Settatree, Sarah, Soliman, Heba, Mcquaid, Dualta, Dearnaley, David, Lalondrelle, Susan, Bhide, Shree

“…Quantify target volume delineation uncertainty for CT/MRI simulation and MRI-guided adaptive radiotherapy in rectal cancer. Define optimal imaging sequences…”
Get full text

The impact of restricted length of treatment field and anthropometric factors on selection of head and neck cancer patients for treatment on the MR-Linac by Ng-Cheng-Hin, Brian, Nutting, Christopher, Newbold, Kate, Bhide, Shreerang, McQuaid, Dualta, Dunlop, Alex, Harrington, Kevin, Wong, Kee Howe

“…This study investigates the impact of a restricted craniocaudal (CC) field length of <20 cm on the selection of head and neck cancer (HNC) patients who can be…”
Get full text

Changes in multimodality functional imaging parameters early during chemoradiation predict treatment response in patients with locally advanced head and neck cancer by Wong, Kee H., Panek, Rafal, Dunlop, Alex, Mcquaid, Dualta, Riddell, Angela, Welsh, Liam C., Murray, Iain, Koh, Dow-Mu, Leach, Martin O., Bhide, Shreerang A., Nutting, Christopher M., Oyen, Wim J., Harrington, Kevin J., Newbold, Kate L.

“…Objective To assess the optimal timing and predictive value of early intra-treatment changes in multimodality functional and molecular imaging (FMI) parameters…”
Get full text

Multicriteria VMAT optimization by Craft, David, McQuaid, Dualta, Wala, Jeremiah, Chen, Wei, Salari, Ehsan, Bortfeld, Thomas

“…Purpose: To make the planning of volumetric modulated arc therapy (VMAT) faster and to explore the tradeoffs between planning objectives and delivery…”
Get full text

Repeatability and sensitivity of T2 measurements in patients with head and neck squamous cell carcinoma at 3T by Panek, Rafal, Welsh, Liam, Dunlop, Alex, Wong, Kee H., Riddell, Angela M., Koh, Dow-Mu, Schmidt, Maria A., Doran, Simon, Mcquaid, Dualta, Hopkinson, Georgina, Richardson, Cheryl, Nutting, Christopher M., Bhide, Shreerang A., Harrington, Kevin J., Robinson, Simon P., Newbold, Kate L., Leach, Martin O.

“…Purpose To determine whether quantitation of T2* is sufficiently repeatable and sensitive to detect clinically relevant oxygenation levels in head and neck…”
Get full text

Repeatability and sensitivity of T 2 measurements in patients with head and neck squamous cell carcinoma at 3T by Panek, Rafal, Welsh, Liam, Dunlop, Alex, Wong, Kee H, Riddell, Angela M, Koh, Dow-Mu, Schmidt, Maria A, Doran, Simon, Mcquaid, Dualta, Hopkinson, Georgina, Richardson, Cheryl, Nutting, Christopher M, Bhide, Shreerang A, Harrington, Kevin J, Robinson, Simon P, Newbold, Kate L, Leach, Martin O

“…Purpose To determine whether quantitation of T 2 * is sufficiently repeatable and sensitive to detect clinically relevant oxygenation levels in head and neck…”
Get full text

The Predictive Value of Early Assessment After 1 Cycle of Induction Chemotherapy with ^sup 18^F-FDG PET/CT and Diffusion-Weighted MRI for Response to Radical Chemoradiotherapy in Head and Neck Squamous Cell Carcinoma by Wong, Kee H, Panek, Rafal, Welsh, Liam, Mcquaid, Dualta, Dunlop, Alex, Riddell, Angela, Murray, Iain, Du, Yong, Chua, Sue, Koh, Dow-Mu, Bhide, Shreerang, Nutting, Chris, Oyen, Wim JG, Harrington, Kevin, Newbold, Kate L

“…The objective of this study was to assess the predictive value of early assessment (after 1 cycle of induction chemotherapy [IC]) with ^sup 18^F-FDG PET/CT and…”
Get full text