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Tsang Y, Nariyangadu P, Shah N, Ostler P, Hoskin P. EP-1856: The impact of waiting time on survival of Lung Stereotactic Ablative Body Radiotherapy patients. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32291-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kowalsky MB, Birkholzer J, Peterson J, Finsterle S, Mukhopadhyay S, Tsang Y. Sensitivity Analysis for Joint Inversion of Ground-Penetrating Radar and Thermal-Hydrological Data from a Large-Scale Underground Heater Test. NUCL TECHNOL 2017. [DOI: 10.13182/nt08-a4017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Korman NJ, Zhao Y, Roberts J, Pike J, Sullivan E, Tsang Y, Karagiannis T. Impact of psoriasis flare and remission on quality of life and work productivity: a real-world study in the USA. Dermatol Online J 2016. [DOI: 10.5070/d3227031643] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Korman NJ, Zhao Y, Roberts J, Pike J, Sullivan E, Tsang Y, Karagiannis T. Impact of psoriasis flare and remission on quality of life and work productivity: a real-world study in the USA. Dermatol Online J 2016; 22:13030/qt4vb7q7rr. [PMID: 27617715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 07/15/2016] [Indexed: 06/06/2023] Open
Abstract
Although psoriasis patients often report a negative impact on health-related quality of life (HRQoL) and work productivity, less is known about how disease burden varies between periods of flare and remission. The aim of this study was tocompare HRQoL and work productivity by disease activity level. Data were extracted from Adelphi 2011/2013 Disease Specific Programmes, two real world surveys of US dermatologists and psoriasis patients. HRQoL was measured using the EuroQOL 5-Dimension Health Questionnaire (EQ-5D) and Dermatology Life Quality Index (DLQI). Work productivity was measured using the Work Productivity Activity index (WPAI). Three levels of disease activity were constructed based on physician reports: remission, active not flaring, active, and flaring. Multivariable regression analyses explored the relationship between disease activity, HRQoL and work productivity, controlling for differences in demographics and comorbidities. Out of 681 psoriasis patients 24% were in remission, 62% had active disease without flaring, and 15% experienced active disease and were currently flaring. Greater disease activity was associated with worse HRQoL. EQ-5D scores decreased with more active disease (remission vs. active not flaring vs. active and flaring: 0.93 vs. 0.90 vs. 0.82; p<0.05), while DLQI scores increased (remission vs. active not flaring vs. active and flaring: 2.0 vs. 5.00 vs. 8.7; p<0.05). WPAI scores increased with disease activity indicating increased productivity loss (remission vs. active not flaring vs. active and flaring: 5.9 vs. 14.8 vs. 26.9; p<0.05). The same trends were confirmed by multivariable regression analyses.
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Tsang Y, Ostler P, Shah N, Kudhail J, Hoskin P. OC-0371: Introduction of a consultant radiographer to stereotactic radiotherapy service. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31620-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Baker A, Tsang Y. Implementation of new standards in your department: a RTT perspective. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31543-2] [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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Groom N, Tsang Y, Hatton M, Hanna G, Franks K, Harden S, Mcdonald F, Harrow S, Faivre-Finn C. 191 Isotoxic intensity modulated radiotherapy (IMRT) in stage III non small cell lung cancer (NSCLC) – a feasibility study. Lung Cancer 2016. [DOI: 10.1016/s0169-5002(16)30208-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sanyal S, Tsang Y, Miller J, Ilchyshyn A. Golfer's purpura - an under recognised form of exercise-induced capillaritis. J Eur Acad Dermatol Venereol 2015; 30:1403-4. [DOI: 10.1111/jdv.13247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Palmer J, Kanter S, Druyts E, Tsang Y, Herrera V. AB0810 Clinical Factors That Modify the Effects of Biologics on Quality of Life: A Case Study in Psoriatic Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Palmer J, Kanter S, Druyts E, Tsang Y, Herrera V. AB0808 Clinical Factors That Modify Treatment Effects of Biologics in Psoriatic Arthritis: A Systematic Review and Meta-Regression. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Tsang Y, Bhattacharya I, Nariyangadu P, Venables K, Shah N, Ostler P, Harrison M, Hughes R, Hoskin P. EP-1295: Lymph node oligometastases treated with SABR: effect of dosimetric parameters on treatment outcomes. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41287-3] [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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Groom N, Tsang Y, Hatton M, Hanna G, Franks K, Harden S, McDonald F, Harrow S, Faivre-Finn C. PO-0658: Quality assurance programme for the isotoxic intensity modulated radiotherapy feasibility study. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40650-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Callender J, Parsons E, McNair H, Reilly A, Huddart R, Hafeez S, Hansen V, Tsang Y, Hall E, Baker A. OC-0564: Implementing a remote access database for clinical trials' IGRT quality assurance in the United Kingdom. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40559-6] [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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Eaton D, Tsang Y, Carver A, Groom N, Harris C, Faivre-Finn C. PO-0985: How accurate is lung IMRT and VMAT delivery? A multicentre audit as part of the Isotoxic IMRT trial. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40977-6] [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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Tsang Y, Ciurlionis L, Kirby A, Venables K, Yarnold J, Coles C. EP-1784: Clinical impact of IMPORT HIGH trial (CRUK/06/003) on breast radiotherapy in the United Kingdom. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31902-2] [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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Miles E, Tsang Y, Carver A, Harris C, Rowbottom C, Faivre-Finn C. EP-1775: Assessment of organs at risk contour variability within a UK multicentre lung radiotherapy trial (Isotoxic IMRT). Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31893-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Parsons E, Tsang Y, Miles L, Mayles P, Hughes L, Landau D. EP-1767: A retrospective review of organ at risk outlining for the IDEAL-CRT trial and its effect on dose escalation. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31885-5] [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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Tsang Y, Ciurlionis L, Clark C, Venables K. Development of a novel treatment planning test for credentialing rotational intensity-modulated radiotherapy techniques in the UK. Br J Radiol 2013; 86:20120315. [PMID: 23385993 DOI: 10.1259/bjr.20120315] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE The increasing use of tomotherapy and volumetric-modulated arc therapy in UK centres will result in more centres choosing to use this technology in a clinical trial setting. The Radiotherapy Trials Quality Assurance (RTTQA) group has developed a new procedure to integrate into the UK intensity-modulated radiotherapy (IMRT) credentialing programme to cover rotational IMRT delivery techniques. METHODS A planning test [three-dimensional treatment planning system (3DTPS)] was designed specifically for rotational IMRT techniques. The feasibility of using this test in the credentialing programme for rotational IMRT was validated by 10 experienced UK centres. The study included five centres using Varian RapidArc™ (RA) (Varian Medical Systems, Milpitas, CA), two using Elekta VMAT™ (VMAT) (Elekta Inc., Norcross, GA) and three using helical tomotherapy (HT) plans. Centres were asked to carry out their own in-house quality assurance (QA) for the plans submitted for this study. A survey was sent out to centres aiming to gather information on their experience in undertaking the exercise and their QA results. RESULTS All centres fulfilled the primary goal by achieving the dose constraints of the primary planning target volume and organ at risk. Seven centres (three RA, one VMAT and three HT plans) were able to fulfil the secondary goal. Among those seven centres, three centres (two RA and one VMAT plans) achieved the tertiary goal. The results of the survey indicated that the 3DTPS test is a clinically relevant and practical planning test to be used. CONCLUSION A planning test for rotational therapy techniques was developed for the RTTQA IMRT credentialing programme. ADVANCES IN KNOWLEDGE This study validated the feasibility of a 3DTPS test to be used as part of a credentialing programme for rotational IMRT techniques in the UK.
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Clark C, Hussein M, Tsang Y, Wilkinson D, Thomas R, Snaith J, Gouldstone C, Bass G, Bolton S, Nisbet A. OC-0500: A national dosimetric audit of VMAT and Tomotherapy in the UK. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)32806-1] [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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Venables K, Tsang Y, Ciurlionis L, Coles CE, Yarnold JR. Does participation in clinical trials influence the implementation of new techniques? A look at changing techniques in breast radiotherapy in the UK. Clin Oncol (R Coll Radiol) 2012; 24:e100-5. [PMID: 22795830 DOI: 10.1016/j.clon.2012.06.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 04/13/2012] [Accepted: 06/22/2012] [Indexed: 10/28/2022]
Abstract
AIMS To examine the effect of UK breast radiotherapy trials on the adoption of new radiotherapy techniques over the last 15 years. MATERIALS AND METHODS The data were taken from questionnaires returned to the national radiotherapy quality assurance team for each of the major trials (START, Supremo, FAST, IMPORT) with additional information sought from heads of radiotherapy physics departments where needed. RESULTS The peak years for the introduction of three-dimensional radiotherapy corresponded to the opening of new trials requiring these techniques. Some non-trial centres had still not implemented three-dimensional techniques for breast cancer patients at the time the most recent questionnaire was completed (2009). CONCLUSION Clinical trials provide the framework and impetus for introducing more accurate radiotherapy for UK women with early breast cancer.
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Wells E, Tsang Y, Bernstein D, Naismith O, Miles E, Clark C. PO-0877 STREAMLINING UK IMRT CREDENTIALING: IMRT PLAN COMPLEXITY HIERARCHY. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71210-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Tsang Y, Venables K, Yarnold J. Quality assurance analysis of participating centres' protocol compliance to a UK multicentre hypofractionated breast (FAST) trial. Br J Radiol 2012; 85:e647-53. [PMID: 22294704 DOI: 10.1259/bjr/32249628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The FAST (FASTer radiotherapy for breast radiotherapy) trial is a UK Phase 2 multicentre randomised clinical trial evaluating a five-fraction schedule of whole-breast radiotherapy following local excision of early breast cancer. The purpose of this quality assurance study was to analyse the radiotherapy planning data in order to confirm compliance with the trial protocol. METHODS 915 patients were recruited between 2004 and 2007 from 18 centres. The protocol required that all centres should use three-dimensional dose compensations to optimise radiotherapy plans. Planning techniques, maximum dose (D(max)) and dose-volume histograms from treatment plans were evaluated and compared between centres. The homogeneity of plans was tested by creating a cut-off value of 5% for the percentage of breast volume receiving >105% of the prescribed dose. RESULTS 672 data sets from 15 centres were available. 93% (624/672) of plans were treated using forward-planned multileaf collimator (MLC) segments, 6% with breast compensators and 1% with inverse-planned MLC segments. 94% (635/672) of patients had a D(max)≤107% of the prescribed dose. 11% (74/672) of plans delivered >105% of the prescribed dose to >5% of the breast volume. CONCLUSION Reviewing the data in this study, 95% of plans submitted by centres complied with the protocol. With the improved breast radiotherapy standards shown in FAST centres, the following recommendations were suggested for future UK breast radiotherapy trials: (i) the minimum, mean and maximum dose to the whole-breast planning target volume (PTV) should be recorded and assessed; (ii) apart from having a D(max)≤107% of the prescribed dose, ≤5% of PTV should a receive dose >105% of the prescription dose.
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Lester J, Nixon L, Mayles P, Mayles H, Tsang Y, Ionescu A, Courtier N, Nahum A, Fenwick J, Eswar C, Malik Z, Mohammed N, Griffiths G. 156 The I-START trial: ISoToxic Accelerated RadioTherapy in locally advanced non-small cell lung cancer. Lung Cancer 2012. [DOI: 10.1016/s0169-5002(12)70157-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wu S, Lin H, Huang W, Tung C, Liao H, Chen Y, Lee Y, Lee Y, Tsang Y, Yang K. MicroRNA17 Post-transcriptional Regulated p21 in Irradiated Betel Quid Chewing Related Oral Squamous Cell Carcinoma Cells. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Kirby A, Jena R, Tsang Y, Ciurlionis L, Harris E, Yarnold J, Coles C. 394 poster IMPORT-LOW PARTIAL BREAST OUTLINING STUDY: USE OF A TRAINING PROTOCOL TO IMPROVE INTER-OBSERVER CONCORDANCE. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70516-3] [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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