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Movement kinematic and postural control differences when performing a visuomotor skill in real and virtual environments. Exp Brain Res 2023:10.1007/s00221-023-06639-0. [PMID: 37222777 DOI: 10.1007/s00221-023-06639-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 05/15/2023] [Indexed: 05/25/2023]
Abstract
Immersive technologies, like virtual and mixed reality, pose a novel challenge for our sensorimotor systems as they deliver simulated sensory inputs that may not match those of the natural environment. These include reduced fields of view, missing or inaccurate haptic information, and distortions of 3D space; differences that may impact the control of motor actions. For instance, reach-to-grasp movements without end-point haptic feedback are characterised by slower and more exaggerated movements. A general uncertainty about sensory input may also induce a more conscious form of movement control. We tested whether a more complex skill like golf putting was also characterized by more consciously controlled movement. In a repeated-measures design, kinematics of the putter swing and postural control were compared between (i) real-world putting, (ii) VR putting, and (iii) VR putting with haptic feedback from a real ball (i.e., mixed reality). Differences in putter swing were observed both between the real world and VR, and between VR conditions with and without haptic information. Further, clear differences in postural control emerged between real and virtual putting, with both VR conditions characterised by larger postural movements, which were more regular and less complex, suggesting a more conscious form of balance control. Conversely, participants actually reported less conscious awareness of their movements in VR. These findings highlight how fundamental movement differences may exist between virtual and natural environments, which may pose challenges for transfer of learning within applications to motor rehabilitation and sport.
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Palliative radiotherapy for children: Symptom response and treatment-associated toxicity according to radiation therapy dose and fractionation. Pediatr Blood Cancer 2023; 70:e30195. [PMID: 36642970 PMCID: PMC10430237 DOI: 10.1002/pbc.30195] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 11/08/2022] [Accepted: 12/19/2022] [Indexed: 01/17/2023]
Abstract
BACKGROUND/OBJECTIVES Radiotherapy is an effective palliative treatment in advanced cancer. Shorter palliative treatment courses are recommended for adults, though pediatric data addressing treatment efficacy and toxicity according to radiation therapy (RT) dose and fractionation are limited. DESIGN/METHODS Total 213 patients aged 21 years or younger receiving 422 palliative radiotherapy treatment courses from 2003 to 2016 were included. Symptom response and treatment-associated toxicity were recorded and analyzed in relationship to demographic and treatment variables. RESULTS Common diagnoses included sarcoma (32.5%), neuroblastoma (24.9%), leukemia/lymphoma (14.9%), and central nervous system tumors (10.9%). The most common indication for treatment was pain (46.7%). Patients received a median of 10 fractions, 2.5 Gy dose per fraction, and 21 Gy total dose. Number of RT fractions was five or less in 166 (39.3%), six to 10 fractions in 117 (27.2%), and 10 or more fractions in 139 (32.9%) of courses. Complete or partial pain relief was achieved in 85% (151 of 178 evaluable patients), including 77.8% receiving five or less fractions and 89.6% receiving more than five fractions. Highest toxicity was grade 1 in 159 (38.9%), grade 2 in 26 (6.4%), and grade 3 in two (0.5%) treatments. On multivariable analysis, RT delivered 30 or more days from death (OR 12.13, 95% CI: 2.13-69.2, p = .005) and no adjuvant chemotherapy (OR 0.14, 95% CI: 0.03-0.54, p = .005) were significantly associated with pain response, and five or less fractions were significantly associated with lower toxicity (OR 0.24, 95% CI: 0.06-0.97, p = .045). CONCLUSIONS Palliative RT courses of five or less fractions result in high rates of pain control and are associated with low toxicity in pediatric patients with cancer.
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Abstract No. 130 The added value of intra-procedural contrast-enhanced CT prior to thermal ablation of colorectal liver metastasis. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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OC-0939 Development and validation of a population-based colorectal model for radiation therapy dosimetry. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02719-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Intracranial pressure directly predicts headache morbidity in idiopathic intracranial hypertension. J Headache Pain 2021; 22:118. [PMID: 34620087 PMCID: PMC8499560 DOI: 10.1186/s10194-021-01321-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 09/01/2021] [Indexed: 01/03/2023] Open
Abstract
Objective Headache is the predominant disabler in idiopathic intracranial hypertension (IIH). The aim was to characterise headache and investigate the association with intracranial pressure. Methods IIH:WT was a randomised controlled parallel group multicentre trial in the United Kingdom investigating weight management methods in IIH. Participants with active IIH (evidenced by papilloedema) and a body mass index (BMI) ≥35 kg/m2 were recruited. At baseline, 12 months and 24 months headache characteristics and quality of life outcome measures were collected and lumbar puncture measurements were performed. Results Sixty-six women with active IIH were included with a mean age of 32.0 years (SD ± 7.8), and mean body mass index of 43.9 ± 7.0 kg/m2. The headache phenotype was migraine-like in 90%. Headache severity correlated with ICP at baseline (r = 0.285; p = 0.024); change in headache severity and monthly headache days correlated with change in ICP at 12 months (r = 0.454, p = 0.001 and r = 0.419, p = 0.002 respectively). Cutaneous allodynia was significantly correlated with ICP at 12 months. (r = 0.479, p < 0.001). Boot strap analysis noted a positive association between ICP at 12 and 24 months and enabled prediction of both change in headache severity and monthly headache days. ICP was associated with significant improvements in quality of life (SF-36). Conclusions We demonstrate a positive relationship between ICP and headache and cutaneous allodynia, which has not been previously reported in IIH. Those with the greatest reduction in ICP over 12 months had the greatest reduction in headache frequency and severity; this was associated with improvement of quality of life measures. Trial registration This work provides Class IIa evidence of the association of raised intracranial pressure and headache. ClinicalTrials.gov number, NCT02124486. Supplementary Information The online version contains supplementary material available at 10.1186/s10194-021-01321-8.
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PO-1642: CBCT Padding for Full Field of View Daily Dose Accumulation and Head and Neck Adaptive Radiotherapy. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01660-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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EP-2021 Commissioning and clinical implementation of dose accumulation and adaptive radiotherapy. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32441-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Pembrolizumab in performance status 2 patients with non-small cell lung cancer (NSCLC): Results of the PePS2 trial. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Local Control and Symptom Outcomes Following Palliative Intent Radiation Therapy in Pediatric Malignancy. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.01.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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SP-0130: Automatic segmentation and deformable registration? setting the stage. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30440-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Recommendations for Randomised Trials in Surgical Oncology. Clin Oncol (R Coll Radiol) 2017; 29:799-810. [PMID: 29097072 DOI: 10.1016/j.clon.2017.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Accepted: 09/20/2017] [Indexed: 01/06/2023]
Abstract
Trials of surgical procedures in the treatment of malignant disease face a unique set of challenges. This review aimed to describe recommendations for the design, delivery and reporting of randomised trials in surgical oncology. A literature search was carried out without date limits to identify articles related to trial methodology research in surgery and surgical oncology. A narrative review was framed around two open National Institute of Health Research portfolio trials in colon and rectal cancer: the STAR-TREC trial (ISRCTN14240288) and the ROCCS trial (ISRCTN46330337). Twelve specific challenges were highlighted: standardisation of technique; pilot and feasibility studies; balancing treatments; the recruitment pathway; outcome measures; patient and public representation; trainee-led networks; randomisation; novel techniques and training; learning curves; blinding; follow-up. Evidence-based recommendations were made for the future design and conduct of surgical oncology trials. Better understanding of the challenges facing trials in the surgical treatment of cancer will accelerate high-quality evaluation and rapid adoption of innovation for the benefit of patient care.
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SP-0404: Development and Clinical Implementation of Image Registration and Dose Accumulation. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30846-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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165: PePS2: Pembrolizumab in Performance Status 2 non-small-cell lung cancer. Lung Cancer 2017. [DOI: 10.1016/s0169-5002(17)30215-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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SU-F-J-15: The Use of CBCT for Dose Calculations in H/N Patients: Impact of Limited FOV. Med Phys 2016. [DOI: 10.1118/1.4955923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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SU-F-J-89: Assessment of Delivered Dose in Understanding HCC Tumor Progression Following SBRT. Med Phys 2016. [DOI: 10.1118/1.4955997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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WE-H-202-02: Biomechanical Modeling of Anatomical Response Over the Course of Therapy. Med Phys 2016. [DOI: 10.1118/1.4958003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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SU-F-J-85: Evaluation of the Velocity Deformable Image Registration Algorithm. Med Phys 2016. [DOI: 10.1118/1.4955993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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WE-AB-202-05: Validation of Lung Stress Maps for CT-Ventilation Imaging. Med Phys 2016. [DOI: 10.1118/1.4957746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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WE-AB-209-03: Adaptive SBRT Planning for Interfraction Motion. Med Phys 2016. [DOI: 10.1118/1.4957772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TU-AB-303-05: Clinical Guidelines for Determining When An Adaptive Replan May Be Warranted for Head and Neck Patients. Med Phys 2015. [DOI: 10.1118/1.4925522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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WE-AB-BRA-02: Development of Biomechanical Models to Describe Dose-Volume Response to Liver Stereotactic Body Radiation Therapy (SBRT) Patients. Med Phys 2015. [DOI: 10.1118/1.4925855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TH-CD-BRB-02: Image Guidance in the SBRT Era: Optimizing Imaging and Managing Uncertainties. Med Phys 2015. [DOI: 10.1118/1.4926224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TU-PIS-Exhibit Hall-1: Therapy: Deformable Image Registration, Contour Propagation, and Dose Mapping. Med Phys 2015. [DOI: 10.1118/1.4925648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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SU-E-J-91: Biomechanical Deformable Image Registration of Longitudinal Lung CT Images. Med Phys 2015. [DOI: 10.1118/1.4924178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Development and implementation of the chronic stroke review tool and intervention guide (Rev-TIG). Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Balance and Gait in People with Multiple Sclerosis: A Comparison with Healthy Controls and the Immediate Change after an Intervention based on the Bobath Concept. PHYSIOTHERAPY RESEARCH INTERNATIONAL 2015; 21:91-101. [DOI: 10.1002/pri.1624] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 10/14/2014] [Accepted: 12/13/2014] [Indexed: 12/21/2022]
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SU-E-CAMPUS-J-02: Implementation of Routine Clinical Daily Dose Evaluation for Patient Specific Quality Control. Med Phys 2014. [DOI: 10.1118/1.4889022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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MO-E-BRD-01: Adapt-A-Thon - Texas Hold’em Invitational. Med Phys 2014. [DOI: 10.1118/1.4889151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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SU-E-T-612: Reducing Toxicity in HPV+ Head and Neck Patients: Dose De- Escalation Or PTV Elimination? Med Phys 2014. [DOI: 10.1118/1.4888948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TH-C-BRF-01: The Promise and Potential Pitfalls of Deformable Image Registration in Clinical Practice. Med Phys 2014. [DOI: 10.1118/1.4889611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TU-B-19A-01: Image Registration II: TG132-Quality Assurance for Image Registration. Med Phys 2014. [DOI: 10.1118/1.4889259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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PD-0424: MR- guided and tumor-targeted salvage HDR brachytherapy for locally recurrent prostate cancer. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30529-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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WE-E-500-01: Physics Pheud! Med Phys 2013. [DOI: 10.1118/1.4815590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TU-G-WAB-01: Advanced Applications in Deformable Registration. Med Phys 2013. [DOI: 10.1118/1.4815460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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MO-F-108-01: Deformable Dose Reconstruction to Evaluate Image-Guidance Strategies in Free-Breathing Liver SBRT. Med Phys 2013. [DOI: 10.1118/1.4815277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TU-C-141-02: Development of a Hyrbid Biomechanical Model Based Deformable Image Registration; Application in Lung. Med Phys 2013. [DOI: 10.1118/1.4815379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Selection for inpatient rehabilitation after severe stroke: What factors influence rehabilitation assessor decision-making? J Rehabil Med 2013; 45:24-31. [DOI: 10.2340/16501977-1065] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Adaptive MRI Guided Brachytherapy of Cervix Cancer: Impact of Reference Image Selection on Dose Accumulation. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Impact of Dose-Probability PTV Margins and Mean Respiratory Position on Liver SBRT Dose. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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A phase 1 study of OSI-930 in combination with erlotinib in patients with advanced solid tumours. Eur J Cancer 2012; 49:782-9. [PMID: 23099006 DOI: 10.1016/j.ejca.2012.09.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 09/24/2012] [Accepted: 09/26/2012] [Indexed: 10/27/2022]
Abstract
AIM To determine the maximum tolerated dose (MTD) of OSI-930 that can be combined with erlotinib, and establish recommended phase 2 doses when both agents are administered daily in patients with advanced solid tumours. PATIENTS AND METHODS Eligible patients with advanced solid tumours were enrolled into this standard "three+three" dose escalation study. Study treatment commenced on day 1 with OSI-930, and erlotinib was introduced on day 8. PK profiles of OSI-930, erlotinib and its active metabolite, OSI-420, were determined. Changes in sVEGFR2 as a pharmacodynamic biomarker of OSI-930 activity were assessed. RESULTS Twenty one patients were enrolled to 1 of 3 cohorts: 200 mg OSI-930 BID+100 mg erlotinib QD; 200 mg OSI-930 BID+150 mg erlotinib QD; 300 mg OSI-930 BID+150 mg erlotinib QD. The most common adverse events were anorexia (85%), diarrhoea (75%), rash (70%) and lethargy (65%). The MTD was not reached but the onset of cumulative toxicity necessitating dose modification after the 28-d DLT assessment period was common at the highest dose level. A PK interaction was identified with co-administration of both agents resulting in a two-fold increase in OSI-930 exposure. Pharmacodynamic activity was observed with a decline in sVEGFR levels detected in all patients. Ten patients had disease stabilization (median duration 119 d). CONCLUSIONS 200 mg OSI-930 BID+150 mg erlotinib QD were the recommended doses for further evaluation of this combination.
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Evaluation of cardiac phenotype in horses with type 1 polysaccharide storage myopathy. J Vet Intern Med 2012; 26:1464-9. [PMID: 22978303 DOI: 10.1111/j.1939-1676.2012.00988.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 06/08/2012] [Accepted: 06/26/2012] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Type 1 polysaccharide storage myopathy (PSSM1), an equine glycogen storage disorder caused by a gain of function mutation (R309H) in the gene encoding glycogen synthase (GYS1), is associated with the accumulation of amylase-resistant alpha-crystalline polysaccharide inclusions within skeletal muscle. Several glycogenoses in humans have a cardiac phenotype, and reports exist of horses with PSSM and polysaccharide inclusions in cardiac muscle. HYPOTHESIS/OBJECTIVES To investigate the hypothesis that horses with PSSM1 display a cardiac phenotype. Our objectives were to compare plasma cardiac troponin I (cTnI) concentration and the incidence of cardiac arrhythmias in PSSM1 homozygotes, heterozygotes, and control horses. METHODS One hundred and twenty-five Belgian and Percheron horses under the same management were genotyped for the R309H GYS1 mutation. From these, 8 age-, breed-, and sex-matched cohorts of each genotype were identified. Plasma cTnI concentration and incidence of cardiac arrhythmias (determined by 24-hour Holter ECG) were compared between the groups. RESULTS Although some PSSM1-affected horses had mildly increased plasma cTnI concentrations, there was no significant difference in cTnI concentrations between groups. There were no significant differences in the incidence of ectopic beats, cardiac conduction intervals or mean heart rate between groups. CONCLUSIONS AND CLINICAL IMPORTANCE We found no evidence of clinically relevant cardiac myocyte injury or arrhythmias in horses with PSSM1. Additional study is required to determine whether myocardial function may be compromised in this disorder.
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WE-C-BRA-03: Best in Physics (Joint Imaging-Therapy) - Registration of Magnetic Resonance, Reconstructed 3D Ultrasound Imaging and Whole-Mount Breast Pathology for Therapy Assessment of Breast Cancer. Med Phys 2012. [DOI: 10.1118/1.4736108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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The Effect of PTV Margin Reduction on Dose Escalation and Accumulated Treatment Dose for Stereotactic Body Radiation Therapy (SBRT) of Liver Tumours. J Med Imaging Radiat Sci 2012. [DOI: 10.1016/j.jmir.2012.03.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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SU-E-T-640: Development of Liver SBRT Planning and Delivery at the Mean Respiratory Position Using Deformable Image Registration. Med Phys 2012; 39:3853. [DOI: 10.1118/1.4735729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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TH-E-BRA-08: MR Guided Radiotherapy for Cervix Cancer Treatment; Retrospective Feasibility Study. Med Phys 2012. [DOI: 10.1118/1.4736369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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MO-D-217BCD-01: Personalizing Medicine: Adapting to the Individual. Med Phys 2012; 39:3864-3865. [PMID: 28518267 DOI: 10.1118/1.4735778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Personalizing medicine through patient-specific adaptation is quickly moving from retrospective research to clinical implementation. The commercial availability of clinical tools, including auto-segmentation, deformable registration, and dose accumulation, is enabling these techniques to be utilized more efficiently. Understanding the importance, rationale, and consequences of anatomical and physiological based adaptation is paramount for the safe implementation of these techniques. This includes accounting for radiobiological differences in delivered dose and the impact that this may have on tumor control and normal tissue response. This interactive session will highlight the evidence and rationale for anatomy-based adaptation, including retrospective studies from several anatomical sites indicating the uncertainties between the planned and delivered dose and the benefits achievable through adaptation. Translation of these techniques into the clinic will be discussed. The growing use of functional imaging enables more sophisticated adaptation and personalization of the treatment plan based on an understanding of the individual response of the tumor and normal tissue to radiation. Methods to understand and incorporate this information into the patient treatment plan will be discussed. The radiobiological impact of dose accumulation methods and adaptive strategies is often overlooked. Biological factors and their influence on these adaptive strategies will be addressed. The clinician's perspective will also be highlighted, including the benefits of dose accumulation, personalization, and adaptation for the patient and the impact that this technology may have on clinical trials and outcomes assessment. LEARNING OBJECTIVES 1. Understand the need for anatomy-based adaptation and methods to safely implement this in the clinic 2. Recognize the need for physiological-based adaptation and methods to safely implement this into the clinic 3. Appreciate the radiobiological limitations and concerns associated with dose summation, and adaptation 4. Describe the clinical implications of dose summation and adaptation on individual patient treatments, clinical trials, and outcomes assessment.
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