Browsing Radiotherapy and Imaging by author "Dearnaley, David"
Now showing items 21-40 of 63
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Effect on Overall Survival of Locoregional Treatment in a Cohort of De Novo Metastatic Prostate Cancer Patients: A Single Institution Retrospective Analysis From the Royal Marsden Hospital.
Bianchini, D; Lorente, D; Rescigno, P; Zafeiriou, Z; Psychopaida, E; et al. (CIG MEDIA GROUP, LP, 2017-10-01)BACKGROUND: The optimal management of the primary tumor in metastatic at diagnosis (M1) prostate cancer (PCa) patients is not yet established. We retrospectively evaluated the effect of locoregional treatment (LRT) on ... -
Escalated-dose versus control-dose conformal radiotherapy for prostate cancer: long-term results from the MRC RT01 randomised controlled trial.
Dearnaley, DP; Jovic, G; Syndikus, I; Khoo, V; Cowan, RA; et al. (ELSEVIER SCIENCE INC, 2014-04-01)BACKGROUND: The aim of this trial was to compare dose-escalated conformal radiotherapy with control-dose conformal radiotherapy in patients with localised prostate cancer. Preliminary findings reported after 5 years of ... -
Estimates of Alpha/Beta (α/β) Ratios for Individual Late Rectal Toxicity Endpoints: An Analysis of the CHHiP Trial.
Brand, DH; Brüningk, SC; Wilkins, A; Fernandez, K; Naismith, O; et al. (ELSEVIER SCIENCE INC, 2021-06-01)PURPOSE: Changes in fraction size of external beam radiation therapy exert nonlinear effects on subsequent toxicity. Commonly described by the linear-quadratic model, fraction size sensitivity of normal tissues is expressed ... -
Evaluation of a multi-atlas CT synthesis approach for MRI-only radiotherapy treatment planning.
Guerreiro, F; Burgos, N; Dunlop, A; Wong, K; Petkar, I; et al. (ELSEVIER SCI LTD, 2017-03-01)BACKGROUND AND PURPOSE: Computed tomography (CT) imaging is the current gold standard for radiotherapy treatment planning (RTP). The establishment of a magnetic resonance imaging (MRI) only RTP workflow requires the ... -
Evaluation of erectile potency and radiation dose to the penile bulb using image guided radiotherapy in the CHHiP trial.
Murray, J; Gulliford, S; Griffin, C; Wilkins, A; Syndikus, I; et al. (ELSEVIER IRELAND LTD, 2020-03-01)BACKGROUND AND PURPOSE: The penile bulb (PB) dose may be critical in development of post prostate radiotherapy erectile dysfunction (ED). This study aimed to generate PB dose constraints based on dose-volume histograms ... -
Failure-Free Survival and Radiotherapy in Patients With Newly Diagnosed Nonmetastatic Prostate Cancer: Data From Patients in the Control Arm of the STAMPEDE Trial.
James, ND; Spears, MR; Clarke, NW; Dearnaley, DP; Mason, MD; et al. (AMER MEDICAL ASSOC, 2016-03-01)IMPORTANCE: The natural history of patients with newly diagnosed high-risk nonmetastatic (M0) prostate cancer receiving hormone therapy (HT) either alone or with standard-of-care radiotherapy (RT) is not well documented. ... -
Hypofractionated radiotherapy versus conventionally fractionated radiotherapy for patients with intermediate-risk localised prostate cancer: 2-year patient-reported outcomes of the randomised, non-inferiority, phase 3 CHHiP trial.
Wilkins, A; Mossop, H; Syndikus, I; Khoo, V; Bloomfield, D; et al. (ELSEVIER SCIENCE INC, 2015-12-01)BACKGROUND: Patient-reported outcomes (PROs) might detect more toxic effects of radiotherapy than do clinician-reported outcomes. We did a quality of life (QoL) substudy to assess PROs up to 24 months after conventionally ... -
Hypofractionation trials and radiobiology of prostate cancer.
Gulliford, S; Hall, E; Dearnaley, D (2017-03) -
Impact of Ga-68-PSMA PET/CT on management in prostate cancer patients with very early biochemical recurrence after radical prostatectomy.
Bashir, U; Tree, A; Mayer, E; Levine, D; Parker, C; et al. (SPRINGER, 2019-04-01)PURPOSE: With the availability of ultra-sensitive PSA assays, early biochemical relapse (eBCR) of prostate cancer is increasingly being detected at values much lower than the conventional threshold of 0.2 ng/ml. Accurate ... -
Impact of Pelvic Radiation Therapy for Prostate Cancer on Global Metabolic Profiles and Microbiota-Driven Gastrointestinal Late Side Effects: A Longitudinal Observational Study.
Ferreira, MR; Sands, CJ; Li, JV; Andreyev, JN; Chekmeneva, E; et al. (ELSEVIER SCIENCE INC, 2021-12-01)PURPOSE: Radiation therapy to the prostate and pelvic lymph nodes (PLNRT) is part of the curative treatment of high-risk prostate cancer. Yet, the broader influence of radiation therapy on patient physiology is poorly ... -
Increased Dose to Organs in Urinary Tract Associates With Measures of Genitourinary Toxicity in Pooled Voxel-Based Analysis of 3 Randomized Phase III Trials.
Marcello, M; Denham, JW; Kennedy, A; Haworth, A; Steigler, A; et al. (FRONTIERS MEDIA SA, 2020-07-22)Purpose: Dose information from organ sub-regions has been shown to be more predictive of genitourinary toxicity than whole organ dose volume histogram information. This study aimed to identify anatomically-localized regions ... -
Interim Results from the IMPACT Study: Evidence for Prostate-specific Antigen Screening in BRCA2 Mutation Carriers.
Page, EC; Bancroft, EK; Brook, MN; Assel, M; Hassan Al Battat, M; et al. (ELSEVIER, 2019-09-18)BACKGROUND: Mutations in BRCA2 cause a higher risk of early-onset aggressive prostate cancer (PrCa). The IMPACT study is evaluating targeted PrCa screening using prostate-specific-antigen (PSA) in men with germline BRCA1/2 ... -
Interobserver variability in target volume delineation for CT/MRI simulation and MRI-guided adaptive radiotherapy in rectal cancer.
White, I; Hunt, A; Bird, T; Settatree, S; Soliman, H; et al. (BRITISH INST RADIOLOGY, 2021-12-01)OBJECTIVES: Quantify target volume delineation uncertainty for CT/MRI simulation and MRI-guided adaptive radiotherapy in rectal cancer. Define optimal imaging sequences for target delineation. METHODS: Six experienced ... -
Iterative framework for the joint segmentation and CT synthesis of MR images: application to MRI-only radiotherapy treatment planning.
Burgos, N; Guerreiro, F; McClelland, J; Presles, B; Modat, M; et al. (IOP PUBLISHING LTD, 2017-06-07)To tackle the problem of magnetic resonance imaging (MRI)-only radiotherapy treatment planning (RTP), we propose a multi-atlas information propagation scheme that jointly segments organs and generates pseudo x-ray computed ... -
Ki67 Is an Independent Predictor of Recurrence in the Largest Randomized Trial of 3 Radiation Fractionation Schedules in Localized Prostate Cancer.
Wilkins, AC; Gusterson, B; Szijgyarto, Z; Haviland, J; Griffin, C; et al. (ELSEVIER SCIENCE INC, 2018-06-01)PURPOSE: To assess whether the cellular proliferation marker Ki67 provides prognostic information and predicts response to radiation therapy fractionation in patients with localized prostate tumors participating in a ... -
Magnitude of observer error using cone beam CT for prostate interfraction motion estimation: effect of reducing scan length or increasing exposure.
McNair, HA; Harris, EJ; Hansen, VN; Thomas, K; South, C; et al. (BRITISH INST RADIOLOGY, 2015-10-01)OBJECTIVE: Cone beam CT (CBCT) enables soft-tissue registration to planning CT for position verification in radiotherapy. The aim of this study was to determine the interobserver error (IOE) in prostate position verification ... -
Meta-analysis of Genome Wide Association Studies Identifies Genetic Markers of Late Toxicity Following Radiotherapy for Prostate Cancer.
Kerns, SL; Dorling, L; Fachal, L; Bentzen, S; Pharoah, PDP; et al. (ELSEVIER, 2016-08-01)Nearly 50% of cancer patients undergo radiotherapy. Late radiotherapy toxicity affects quality-of-life in long-term cancer survivors and risk of side-effects in a minority limits doses prescribed to the majority of patients. ... -
Microbiota- and Radiotherapy-Induced Gastrointestinal Side-Effects (MARS) Study: A Large Pilot Study of the Microbiome in Acute and Late-Radiation Enteropathy.
Reis Ferreira, M; Andreyev, HJN; Mohammed, K; Truelove, L; Gowan, SM; et al. (AMER ASSOC CANCER RESEARCH, 2019-11-01)PURPOSE: Radiotherapy is important in managing pelvic cancers. However, radiation enteropathy may occur and can be dose limiting. The gut microbiota may contribute to the pathogenesis of radiation enteropathy. We hypothesized ... -
Nine-year Follow-up for a Study of Diffusion-weighted Magnetic Resonance Imaging in a Prospective Prostate Cancer Active Surveillance Cohort.
Henderson, DR; de Souza, NM; Thomas, K; Riches, SF; Morgan, VA; et al. (ELSEVIER SCIENCE BV, 2016-06-01)BACKGROUND: In active surveillance (AS) for prostate cancer there are few data on long-term outcomes associated with novel imaging markers. OBJECTIVE: To determine long-term outcomes with respect to the apparent diffusion ... -
Patterns of recurrence after prostate bed radiotherapy.
Brand, DH; Parker, JI; Dearnaley, DP; Eeles, R; Huddart, R; et al. (ELSEVIER IRELAND LTD, 2019-12-01)BACKGROUND AND PURPOSE: Prostate bed radiotherapy is a standard treatment after radical prostatectomy. Recent evidence suggests that, for patients with a PSA > 0.34 ng/ml, the radiotherapy treatment volume should include ...