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Han C, Nguyen K, Schultheiss T, Wong J. SU-E-T-254: Quantitative Evaluation of Three Mathematical Models for Radiation-Induced Secondary Cancer Risk for Lung in Stereotactic Body Radiotherapy. Med Phys 2012; 39:3762. [PMID: 28517305 DOI: 10.1118/1.4735321] [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
PURPOSE Several mathematical models exist to predict secondary cancer risks from radiotherapy treatment. In this study, we aimed to compare three dosimetry-based models in the application of stereotactic body radiotherapy (SBRT) of early-stage non-small cell lung cancer (NSCLC) with three radiotherapy treatment modalities. METHODS Ten patients who received definitive SBRT for early-stage NSCLC were retrospectively selected. for each patient, a helical tomotherapy (HT) plan, a three-dimensional conformal radiotherapy (3D-CRT) plan, and a volumetric modulated arc therapy (VMAT) plan were generated to deliver 50 Gy to the planning target volume in five fractions. The excess absolute risk (EAR) for secondary lung cancer occurrence was calculated using three risk models: the linear-exponential model, the plateau model, and the linear model. The sensitivity of the EAR to the prescription dose was evaluated by varying the prescription dose in the range of 40 to 60 Gy. RESULTS Based on the linear-exponential model, the average EAR's (in occurrences per 10,000 patients per year) were 8.4+/-2.7, 8.3+/-2.1, and 8.4+/-1.9 for the HT plans, 3D-CRT plans, and VMAT plans respectively with 40 Gy prescription dose, and 9.4+/-2.5, 9.0+/-2.1, and 9.3+/-1.8 with 60 Gy. Based on the plateau model, the average EAR's were 10.7+/-3.9, 10.6+/-3.0, and 10.9+/-2.8 with 40 Gy, and 12.9+/-4.2, 12.6+/-3.4, 12.9+/-3.1 with 60 Gy. Based on the linear model, the average EAR's were 29.1+/-13.4, 29.4+/-11.4, and 30.0+/-11.1 with 40 Gy, and 43.8+/-20.1, 44.0+/-11.0, 45.1+/-16.6 with 60 Gy. The difference in EAR's were not statistically significant among the HT, 3D-CRT, and VMAT plans. CONCLUSIONS Three secondary cancer risk models, as well as three SBRT treatment modalities, were compared. There was no significant difference in secondary lung cancer risks among the three treatment modalities in this study.
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Ahmad M, Liu W, Deng J, Nguyen K, Wu D, Chen Z, Moran M, Nath R. SU-E-T-289: On the Use of a Diode Array for the Commissioning of Dynamically-Wedged Asymmetric Fields Generated by Varian EDW's in the Pinnacle Treatment Planning System. Med Phys 2012; 39:3770. [DOI: 10.1118/1.4735357] [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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Chang A, Nguyen K, Rogers B, Laforest R, Anderson C. PD-0532 64CU-RADIOLABELED OCTREOTATE AS A THERANOSTIC AGENT FOR CANCER: ROLE OF P53 IN THE THERAPEUTIC RESPONSE. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70871-x] [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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Arnez A, Kiser R, Lakhanpal S, Nguyen K. Letter regarding: F Pannier, E Rabe, J Rits, A Kadiss, U Maurins. Endovenous laser ablation of great saphenous veins using a 1470 nm diode laser and the radial fibre - follow-up after six months. Phlebology 2011;26:35-9. Phlebology 2012; 27:101; author reply 102. [PMID: 22332146 DOI: 10.1258/phleb.2011.011017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Chabot M, Martinet G, Béroff K, Pino T, Bouneau S, Genolini B, Grave X, Nguyen K, le Gailliard C, Rosier P, Féraud G, Friha H, Villier B. Detection of atomic and molecular mega-electron-volt projectiles using an x-ray charged coupled device camera. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2011; 82:103301. [PMID: 22047285 DOI: 10.1063/1.3640411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We show that an x-ray charge coupled device (CCD) may be used as a particle detector for atomic and molecular mega-electron-volt (MeV) projectiles of around a few hundred keV per atomic mass unit. For atomic species, spectroscopic properties in kinetic energy measurements (i.e., linearity and energy resolution) are found to be close to those currently obtained with implanted or surface barrier silicon particle detectors. For molecular species, in order to increase the maximum kinetic energy detection limit, we propose to put a thin foil in front of the CCD. This foil breaks up the molecules into atoms and spreads the charges over many CCD pixels and therefore avoiding saturation effects. This opens new perspectives in high velocity molecular dissociation studies with accelerator facilities.
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Han C, Nguyen K, Kim J, Pezner R, Schultheiss T, Wong J. SU-E-T-645: Radiobiologic Evaluation of Lung Toxicity in Treatment Plan Quality Comparisons for Hypofractionated Stereotactic Body Radiotherapy Using Relative Damaged Volume Modeling. Med Phys 2011. [DOI: 10.1118/1.3612608] [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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Solanki D, Chandrasekaran N, Chodhry R, Cuprillnilson S, Desai S, Liberman B, Lee V, Lin Y, Nguyen K, Roughi L, Shah S, Sharma V, Thomas P, Janoff A, Keith E. Adhesion of lysozyme, albumin and transferrin to two types of FDA Group II contact lenses. FASEB J 2011. [DOI: 10.1096/fasebj.25.1_supplement.928.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zhao ZY, Khatri ND, Nguyen K, Song SQ, Sun L. Synthesis and mechanical properties of interconnected carbon nanofiber network reinforced polydimethylsiloxane composites. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2011; 11:1092-1097. [PMID: 21456144 DOI: 10.1166/jnn.2011.3074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Carbon nanofiber (CNF) reinforced elastomer composites with light weight, sustainability of large deformation, chemical stability, corrosion and fatigue resistance, and vibration and noise reduction capability can have positive impact on a wide range of applications. However, this type of composite is still a under studied research area due to the difficulties in material handling and processing. To improve processing control and reproducibility for large scale engineering applications, cost effective carbon nanofibers (CNFs) in form of interconnected porous network structure were used as nanofillers. Processing, microstructure and mechanical properties of carbon nanofibers reinforced polydimethylsiloxane (PDMS) have been studied. Mechanical measurements on the composites show that the CNF-PDMS interfacial bonding can be until failure, interfacial debonding happens in the CNF-PDMS composites and the resulted permanent deformation stabilizes with increasing load-unload cycles with significant energy dissipation.
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Nguyen K, Liu A, Wong J. Prospective Analysis of Intra-fractional Motion for Patients Undergoing Fractionated Stereotactic Body Radiation Therapy (SBRT) using Helical Tomotherapy for Spinal Metastases. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1849] [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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Nguyen NH, VuTien P, Garcia RT, Trinh H, Nguyen H, Nguyen K, Levitt B, Nguyen MH. Response to pegylated interferon and ribavirin in Asian American patients with chronic hepatitis C genotypes 1 vs 2/3 vs 6. J Viral Hepat 2010; 17:691-7. [PMID: 20002562 DOI: 10.1111/j.1365-2893.2009.01226.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Chronic hepatitis C is generally underappreciated in Asian Americans, and most pivotal studies were conducted in western countries and only included a small numbers of Asian patients. Our goal was to examine and compare treatment outcomes in these patients with genotypes 1 vs 2/3 vs 6. We performed a retrospective cohort study of 167 consecutive treatment-naïve Asian American patients treated with pegylated interferon (PEG IFN) plus ribavirin (RBV) at two community clinics in Northern California from 12/00 to 1/08. Primary outcome was sustained virological response rate by intention-to-treat analysis. The overall completion rate was 76%, and treatment adherence (completion of ≥ 75-80% PEG IFN + RBV dose for ≥ 75-80% of intended duration) was 74%. Significant depression was noted in only 4% of patients. Sustained virologic response in patients with genotype 6 treated for 48 weeks was similar to that seen in those with genotype 2/3 (74%vs 75%, P = 0.89) and significantly higher than those with genotype 1 (74%vs 49%, P = 0.016). On multivariate analysis inclusive of sex, age, body mass index (≤ 25 vs > 25) and viral load, only treatment adherence and genotype (2/3 and 6 treated for 48 weeks) were found to be significant predictors of sustained virologic response. We conclude that significant depression is rare in Asian American patients (4%). Patients with genotype 6 treated for 48 weeks appear to have a similar treatment response rate as patients with genotype 2/3 and a significantly higher response rate than those with genotype 1.
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Henry N, Rouach Y, Nguyen K, Verkarre V, Mejean A, Timsit MO. Particularités pronostiques, histopathologiques, génétiques et thérapeutiques du carcinome à cellules rénales tubulopapillaire. Prog Urol 2010; 20:393-401. [DOI: 10.1016/j.purol.2010.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Revised: 01/10/2010] [Accepted: 02/05/2010] [Indexed: 01/20/2023]
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112
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Cohn TE, Nguyen K. Turning it on piecemeal makes it seen faster. J Vis 2010. [DOI: 10.1167/2.7.232] [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] Open
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113
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Wein N, Krahn M, Courrier S, Bartoli M, Salort-Campana E, Nguyen K, Fernandez C, Pouget J, Fossat C, Depetris D, Leturcq F, Cau P, Levy N. Immunolabelling and flow cytometry as new tools to explore dysferlinopathies. Neuromuscul Disord 2009; 20:57-60. [PMID: 19854055 DOI: 10.1016/j.nmd.2009.08.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 07/03/2009] [Accepted: 08/10/2009] [Indexed: 11/19/2022]
Abstract
Dysferlinopathies are autosomal recessive muscular dystrophies caused by DYSF mutations, which lead to a reduced amount or a complete lack of dysferlin. One step in dysferlinopathies diagnosis consists in Western blot analysis of proteins extracted from muscle biopsy, or blood monocytes. We have taken advantage of dysferlin expression in monocytes to develop a whole blood flow cytometry (WBFC), using antibodies directed against dysferlin. Six patients were submitted to WBFC analysis and immunofluorescence analysis on monocytes. Results obtained are correlated to Western blot from monocytes and muscle biopsies. The possible usefulness of this flow cytometry analysis in routine diagnosis is presented.
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Moy T, Conrad M, Rubio A, Silverman J, Nguyen K. P24 Characterization of the lysylphosphatidylglycerol synthetase MprF, an enzyme associated with reduced susceptibility to daptomycin. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70243-2] [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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115
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Krahn M, Wein N, Lostal W, Bourg-Alibert N, Nguyen K, Courrier S, Vial C, Labelle V, Petris DD, Borges A, Mattei M, Roudaut C, Miyake K, McNeil P, Cau P, Leturcq F, Bartoli M, Lévy N, Richard I. G.O.5 Partial functionality of a Mini-dysferlin molecule identified in a patient affected with moderately severe primary dysferlinopathy. Neuromuscul Disord 2008. [DOI: 10.1016/j.nmd.2008.06.198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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La T, Filion E, Turnbull B, Chu J, Lee P, Nguyen K, Maxim P, Loo B, Graves E, Le Q. Metabolic Tumor Volume Predicts for Recurrence and Death in Head and Neck Cancer. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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117
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Nguyen K, Nadeau K. TSLP Directly Inhibits IL-10 Expression By Human Regulatory T Cells. J Allergy Clin Immunol 2008. [DOI: 10.1016/j.jaci.2008.01.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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118
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Turchin I, Nguyen K, Menard HA. Cough, fever, joint pain and tender nodules: What is your call? CMAJ 2008; 178:151-2. [DOI: 10.1503/cmaj.071255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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119
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Nguyen K, Rincon JC, Bickel M. Association of strong premature contacts and tooth mobility using T-Scan. Aust Dent J 2007. [DOI: 10.1111/j.1834-7819.2007.tb06161.x] [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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120
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Cheng J, Schultheiss T, Nguyen K, Wong J. Dose-Volume Response in Acute Gastrointestinal Injury of Prostate Cancer Patients Treated With Helical Tomotherapy. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1457] [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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121
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Krahn M, Bernard R, Nguyen K, Labelle V, Bassez G, Figarella-Branger D, Pouget J, Di Salvo E, Hammouda E, Béroud C, Eymard B, Urtizberea J, Leturcq F, Lévy N. G.P.4.01 Mutational spectrum of the DYSF gene based on a large cohort of dysferlin deficient patients. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.093] [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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122
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Nguyen K, Krieser D, Kerr D, Jolley D, Clooney M, Kelly AM. Is Parental Weight Estimation More Accurate Than Other Weight Estimation Methods for Children? Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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123
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Aubourg P, Krahn M, Bernard R, Nguyen K, Forzano O, Boccaccio I, Delague V, De Sandre-Giovannoli A, Pouget J, Depétris D, Mattei MG, Philip N, Lévy N. Assignment of a new congenital fibrosis of extraocular muscles type 3 (CFEOM3) locus, FEOM4, based on a balanced translocation t(2;13) (q37.3;q12.11) and identification of candidate genes. J Med Genet 2006; 42:253-9. [PMID: 15744040 PMCID: PMC1736008 DOI: 10.1136/jmg.2004.021899] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Nguyen K, Dillon TS, Danielsen E. The concept of web event and a practical model‐driven approach to web information system development. INTERNATIONAL JOURNAL OF WEB INFORMATION SYSTEMS 2006. [DOI: 10.1108/17440080680000098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This article proposes the concept of web clientserver event together with its associated taxonomy which yields a formal specification for such an event. The concept, in conjunction with the concept of atomic use case (reviewed in the article), is then used as a key element for a model‐driven approach to web information system development. The outcome is a new method for web information systems development that reduces the complex web‐based hypermedia navigation behaviour to a much simpler event‐driven behaviour. On the strength of that realized simplicity, the method provides (i) a set of platform‐independent models that completely characterizes the application, and (ii) a well‐defined process to map the combined model to any chosen platform‐dependent implementation.
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Nguyen K, Bourdin A, Vachier I, Mainprice B, Farce M, Godard P, Chanez P. 065 CC10 and TIMP1 levels in induced sputum of smokers who developed chronic airflow impairment. Rev Mal Respir 2005. [DOI: 10.1016/s0761-8425(05)92477-7] [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]
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