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Beaudry MM, Carignan D, Foster W, Lavallee MC, Aubin S, Lacroix F, Poulin E, Lachance B, Després P, Beaulieu L, Vigneault E, Martin AG. Comparison of four-year toxicities and local control of ultra-hypofractionated vs moderate-hypofractionated image guided prostate radiation with HDR brachytherapy boost: A phase I-II single institution trial. Clin Transl Radiat Oncol 2023; 40:100593. [PMID: 36875870 PMCID: PMC9974413 DOI: 10.1016/j.ctro.2023.100593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/03/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023] Open
Abstract
Purpose/Objectives To analyze the long term efficacy and safety of an ultra-hypofractionated (UHF) radiation therapy prostate treatment regimen with HDR brachytherapy boost (BB) and compare it to moderate-hypofractionated regimens (MHF). Materials/Methods In this single arm, prospective monocentric study, 28 patients with intermediate risk prostate cancer were recruited in an experimental treatment arm of 25 Gy in 5 fractions plus a 15 Gy HDR BB. They were then compared to two historical control groups, treated with either 36 Gy in 12 fractions or 37.5 Gy in 15 fractions with a similar HDR BB. The control groups included 151 and 311 patients respectively. Patient outcomes were reported using the International Prostate Symptom Score (IPSS) and Expanded Prostate Index Composite (EPIC-26) questionnaires at baseline and at each follow-up visit. Results Median follow-up for the experimental arm was 48.5 months compared to 47 months and 60 months compared to the 36/12 and 37,5/15 groups respectively. The IPSS and EPIC scores did not demonstrate any significant differences in the gastrointestinal or genitourinary domains between the three groups over time. No biochemical recurrence occurred in the UHF arm as defined by the Phoenix criterion. Conclusion The UHF treatment scheme with HDR BB seems equivalent to standard treatment arms in terms of toxicities and local control. Randomized control trials with larger cohorts are ongoing and needed to further confirm our findings.
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Affiliation(s)
- M M Beaudry
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada
| | - D Carignan
- Centre de recherche sur le cancer, Université Laval, Québec, QC, Canada
| | - W Foster
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada
| | - M C Lavallee
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada
| | - S Aubin
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada
| | - F Lacroix
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada
| | - E Poulin
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada
| | - B Lachance
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada
| | - P Després
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada.,Centre de recherche sur le cancer, Université Laval, Québec, QC, Canada
| | - L Beaulieu
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada.,Centre de recherche sur le cancer, Université Laval, Québec, QC, Canada
| | - E Vigneault
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada.,Centre de recherche sur le cancer, Université Laval, Québec, QC, Canada
| | - A G Martin
- CHU de Québec-Université Laval, Service de radio-oncologie, Québec, QC, Canada.,Centre de recherche sur le cancer, Université Laval, Québec, QC, Canada
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Bélanger C, Poulin É, Aubin S, Cunha J, Beaulieu L. PP-0150 Commissioning of a GPU-based multi-criteria optimisation algorithm for HDR brachytherapy. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06442-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lavallee M, Cantin A, Vigneault E, Foster W, Aubin S, Martin A, Lefebvre M, Beaulieu L. PO-0209 Practical considerations on the use of EM tracking technology for clinical HDR brachytherapy. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06368-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Vigneault E, Carignan D, Magnan S, Froment M, Foster W, Aubin S, Lavallée M, Lacroix F, Cantin A, Poulin É, Martin A. OC-0101 17 years' of EBRT plus HDR brachytherapy boost in high risk localized prostate cancer patients. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06305-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lavallee M, Cantin A, Lefebvre M, Foster W, Aubin S, Martin A, Beaulieu L, Vigneault E. OC-0106 US-guided EM tracked system compared to OncentraProstate for HDR brachytherapy: a first in-men study. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06310-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bélanger C, Poulin É, Aubin S, Foster W, Martin A, Vigneault É, Cunha J, Beaulieu L. OC-0044 Clinical evaluation of an interactive multi-criteria optimisation workflow for HDR brachytherapy. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06286-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Foster W, Froment M, Lavallee M, Vigneault E, Aubin S, Carignan D, Pilote L. IMAGE-Guided Brachytherapy for Primary Vaginal Cancers. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Martin A, Carignan D, Foster W, Vigneault E, Lavallee M, Aubin S, Lacroix F, Poulin E, Lachance B, Després P, Beaulieu L. ULTRA-HYPO (UHF) Compared to Moderate-HYPO (MHF) Fractionated Prostate IGRT with HDR Brachytherapy BOOST: LONG TERM Toxicity, Acceptability and Efficiency of Delivery. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nerem MP, Salmon D, Aubin S, Delos JB. Experimental Observation of Classical Dynamical Monodromy. Phys Rev Lett 2018; 120:134301. [PMID: 29694200 DOI: 10.1103/physrevlett.120.134301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Indexed: 06/08/2023]
Abstract
A Hamiltonian system is said to have nontrivial monodromy if its fundamental action-angle loops do not return to their initial topological state at the end of a closed circuit in angular momentum-energy space. This process has been predicted to have consequences which can be seen in dynamical systems, called dynamical monodromy. Using an apparatus consisting of a spherical pendulum subject to magnetic potentials and torques, we observe nontrivial monodromy by the associated topological change in the evolution of a loop of trajectories.
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Affiliation(s)
- M P Nerem
- Department of Physics, College of William and Mary, 300 Ukrop Way, Williamsburg, Virginia 23185-8795, USA
| | - D Salmon
- Department of Physics, College of William and Mary, 300 Ukrop Way, Williamsburg, Virginia 23185-8795, USA
| | - S Aubin
- Department of Physics, College of William and Mary, 300 Ukrop Way, Williamsburg, Virginia 23185-8795, USA
| | - J B Delos
- Department of Physics, College of William and Mary, 300 Ukrop Way, Williamsburg, Virginia 23185-8795, USA
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Vigneault E, Martell K, Taussky D, Husain S, Delouya G, Mbodji K, Magnan S, Despres P, Lavallee M, Aubin S, Beaulieu L, Foster W, Martin A. The Risk of Second Malignancies after Seed Migration in Prostate Cancer Patients Treated With I-125 Free Seeds Brachytherapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Aubin S, Kupers R, Ptito M, Jennum P. Melatonin and cortisol profiles in the absence of light perception. Behav Brain Res 2017; 317:515-521. [DOI: 10.1016/j.bbr.2016.09.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/18/2016] [Accepted: 09/22/2016] [Indexed: 11/28/2022]
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Aubin S, Gacon C, Jennum P, Ptito M, Kupers R. Altered sleep–wake patterns in blindness: a combined actigraphy and psychometric study. Sleep Med 2016; 24:100-108. [DOI: 10.1016/j.sleep.2016.07.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 07/17/2016] [Accepted: 07/18/2016] [Indexed: 10/21/2022]
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Ramphal R, Aubin S, Czaykowski P, De Pauw S, Johnson A, McKillop S, Szwajcer D, Wilkins K, Rogers P. Adolescent and young adult cancer: principles of care. ACTA ACUST UNITED AC 2016; 23:204-9. [PMID: 27330350 DOI: 10.3747/co.23.3013] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Adolescents and young adults (ayas) with cancer in active treatment face a number of barriers to optimal care. In the present article, we focus on the 3 critical domains of care for ayas-medical, psychosocial, and research-and how changes to the system could overcome barriers. We summarize the current literature, outline recommended principles of care, raise awareness of barriers to optimal care, and suggest specific changes to the system to overcome those barriers in the Canadian context. Many of the recommendations can nevertheless be applied universally. These recommendations are endorsed by the Canadian Task Force on Adolescents and Young Adults with Cancer and build on outcomes from two international workshops held by that group.
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Affiliation(s)
- R Ramphal
- Division of Pediatric Hematology/Oncology, University of Ottawa, Ottawa, ON
| | - S Aubin
- Division of Gynecologic Oncology, McGill University, Montreal, QC
| | - P Czaykowski
- Division of Hematology/Oncology, University of Manitoba, Winnipeg, MB
| | - S De Pauw
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON
| | - A Johnson
- Division of Pediatric Hematology, Oncology and Bone Marrow Transplantation, BC Children's Hospital and University of British Columbia, Vancouver, BC
| | - S McKillop
- Division of Pediatric Hematology/Oncology, University of Alberta, Edmonton, AB
| | - D Szwajcer
- Department of Internal Medicine, University of Manitoba, Winnipeg, MB
| | - K Wilkins
- Faculty of Nursing, University of New Brunswick, Fredericton, NB
| | - P Rogers
- Division of Hematology/Oncology, University of Manitoba, Winnipeg, MB
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Zhang J, Tandecki M, Collister R, Aubin S, Behr JA, Gomez E, Gwinner G, Orozco LA, Pearson MR, Sprouse GD. Hyperfine Anomalies in Fr: Boundaries of the Spherical Single Particle Model. Phys Rev Lett 2015; 115:042501. [PMID: 26252677 DOI: 10.1103/physrevlett.115.042501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Indexed: 06/04/2023]
Abstract
We have measured the hyperfine splitting of the 7P_{1/2} state at the 100 ppm level in Fr isotopes (^{206g,206m,207,209,213,221}Fr) near the closed neutron shell (N=126 in ^{213}Fr). The measurements in five isotopes and a nuclear isomeric state of francium, combined with previous determinations of the 7S_{1/2} splittings, reveal the spatial distribution of the nuclear magnetization, i.e., the Bohr-Weisskopf effect. We compare our results with a simple shell model consisting of unpaired single valence nucleons orbiting a spherical nucleus, and find good agreement over a range of neutron-deficient isotopes (^{207-213}Fr). Also, we find near-constant proton anomalies for several even-N isotopes. This identifies a set of Fr isotopes whose nuclear structure can be understood well enough for the extraction of weak interaction parameters from parity nonconservation studies.
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Affiliation(s)
- J Zhang
- Department of Physics, Joint Quantum Institute, University of Maryland, and National Institute of Standards and Technology, College Park, Maryland 20742, USA
| | - M Tandecki
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - R Collister
- Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - S Aubin
- Department of Physics, College of William and Mary, Williamsburg, Virginia 2319, USA
| | - J A Behr
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - E Gomez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, México
| | - G Gwinner
- Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - L A Orozco
- Department of Physics, Joint Quantum Institute, University of Maryland, and National Institute of Standards and Technology, College Park, Maryland 20742, USA
| | - M R Pearson
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - G D Sprouse
- Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
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Ivory MK, Ziltz AR, Fancher CT, Pyle AJ, Sensharma A, Chase B, Field JP, Garcia A, Jervis D, Aubin S. Atom chip apparatus for experiments with ultracold rubidium and potassium gases. Rev Sci Instrum 2014; 85:043102. [PMID: 24784588 DOI: 10.1063/1.4869781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a dual chamber atom chip apparatus for generating ultracold (87)Rb and (39)K atomic gases. The apparatus produces quasi-pure Bose-Einstein condensates of 10(4) (87)Rb atoms in an atom chip trap that features a dimple and good optical access. We have also demonstrated production of ultracold (39)K and subsequent loading into the chip trap. We describe the details of the dual chamber vacuum system, the cooling lasers, the magnetic trap, the multicoil magnetic transport system, the atom chip, and two optical dipole traps. Due in part to the use of light-induced atom desorption, the laser cooling chamber features a sufficiently good vacuum to also support optical dipole trap-based experiments. The apparatus is well suited for studies of atom-surface forces, quantum pumping and transport experiments, atom interferometry, novel chip-based traps, and studies of one-dimensional many-body systems.
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Affiliation(s)
- M K Ivory
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A R Ziltz
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - C T Fancher
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A J Pyle
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A Sensharma
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - B Chase
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - J P Field
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - A Garcia
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - D Jervis
- Department of Physics, University of Toronto, Toronto, Ontario M5S 1A7, Canada
| | - S Aubin
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
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Aubin S, Martin A, Foster W, Vigneault E, Beaulieu L. PD-0423: Impact of technology and learning curve on migration and seed loss in permanent prostate implants. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)30528-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chen C, Ivory M, Aubin S, Delos JB. Dynamical monodromy. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 89:012919. [PMID: 24580309 DOI: 10.1103/physreve.89.012919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Indexed: 06/03/2023]
Abstract
Integrable Hamiltonian systems are said to display nontrivial monodromy if fundamental action-angle loops defined on phase-space tori change their topological structure when the system is carried around a circuit. In an earlier paper it was shown that this topological change can occur as a result of time evolution under certain rather abstract flows in phase space. In the present paper, we show that the same topological change can occur as a result of application of ordinary forces. We also show how this dynamical phenomenon could be observed experimentally in classical or in quantum systems.
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Affiliation(s)
- C Chen
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - M Ivory
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - S Aubin
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
| | - J B Delos
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA
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Aubin S, Behr JA, Collister R, Flambaum VV, Gomez E, Gwinner G, Jackson KP, Melconian D, Orozco LA, Pearson MR, Sheng D, Sprouse GD, Tandecki M, Zhang J, Zhao Y. Atomic parity non-conservation: the francium anapole project of the FrPNC collaboration at TRIUMF. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s10751-013-0797-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Foster W, Després P, Martin A, Aubin S, Varfalvy N, Beaulieu L, Vigneault É. Impact of Implantation Technique on Biochemical Disease-free Survival in I-125 Treated Prostate Cancer Patients. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Manougian RA, Vigneault E, Chevrette E, Aubin S, Beaulieu L. 698 poster ACUTE TOXICITY IN PATIENTS TREATED WITH SELECTIVE HDR IMAGE GUIDED BOOST TO DOMINANT INTRA-PROSTATIC LESION. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70820-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Vigneault E, Manougian RA, Chevrette E, Lavallée M, Aubin S, Martin A, Beaulieu L. 705 poster DOSE VOLUME HISTOGRAMS IN PATIENTS TREATED IMAGE GUIDED SELECTIVE (DIL) HDR BOOST TO THE PROSTATE. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70827-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Martínez S, Hernández L, Reyes D, Gomez E, Ivory M, Davison C, Aubin S. Note: fast, small, and low vibration mechanical laser shutters. Rev Sci Instrum 2011; 82:046102. [PMID: 21529046 DOI: 10.1063/1.3574224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We present three novel mechanical laser shutter designs based, respectively, on a stepper motor, a relay, and a piezoelectric actuator. Each shutter type is ideally suited to a specific shuttering application. The stepper motor is well suited for applications requiring low vibrations, the relay is compact and capable of rapid bursts, and the piezoelectric is 2 orders of magnitude faster than other available mechanical shutters.
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Affiliation(s)
- S Martínez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78290, Mexico
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Martin A, Vigneault E, Foster W, Aubin S, Lavallée M, Laflamme N, Beaulieu L. Single (15 Gy) vs. 2 Fractions (of 10Gy) HDR Prostate Brachytherapy Boost: A More Practical Approach with Less Sexual Toxicity. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lavallee M, Aubin S, Larochelle M, Vallieres I, Beaulieu L. SU-GG-T-594: 3D Heterogeneous Dose Distributions for Total Body Irradiation Patients. Med Phys 2010. [DOI: 10.1118/1.3468995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ayotte G, D'Amours M, Aubin S, Lessard É, Pouliot J, Beaulieu L. Sci-Thurs AM: YIS-02: Optimizing Number and Position of Catheters within Inverse Planning Simulated Annealing (IPSA) for Prostate and Breast High Dose Rate Brachytherapy. Med Phys 2009. [DOI: 10.1118/1.3244162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Cherrier MM, Aubin S, Higano CS. Cognitive and mood changes in men undergoing intermittent combined androgen blockade for non-metastatic prostate cancer. Psychooncology 2009; 18:237-47. [PMID: 18636420 DOI: 10.1002/pon.1401] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
PURPOSE Men with prostate-specific antigen (PSA)-only relapse of prostate cancer after primary therapy are generally fully functional and asymptomatic with a life expectancy of up to 10 or more years. Androgen deprivation therapy (ADT) is a common treatment option. This study examined mood and cognitive changes in otherwise healthy men with prostate cancer prior to, during and after ADT. EXPERIMENTAL DESIGN Twenty hormone naïve, eugonadal prostate cancer patients without evidence of metastases and with a rising PSA were treated with intermittent ADT consisting of 9 months of complete androgen blockade (CAB) achieved with combined leuprolide and flutamide followed by an 'off treatment' period. Cognitive function tests and mood measures were administered at baseline, after 3 and 9 months of ADT and after 3 months of no treatment. Twenty healthy control patients without prostate cancer range matched for age and education were tested at the same time intervals. RESULTS ADT patients evidenced a significant decline in spatial reasoning, spatial abilities and working memory during treatment compared with baseline. No changes were noted for measures of verbal or spatial memory, selective attention or language. Significant changes in self-rated mood such as increased depression, tension, anxiety, fatigue and irritability were evident during treatment compared with baseline for ADT patients. No significant changes in either cognitive tests or mood measures were noted for the healthy control group. CONCLUSIONS These findings, suggest that 9 months of combined androgen blockade may result in some adverse changes in cognition and mood. However, many but not all of these changes can return to baseline after cessation of ADT.
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Affiliation(s)
- M M Cherrier
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA 98108, USA.
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Gaudet M, Vigneault E, Aubin S, Varfalvy N, Harel F, Beaulieu L, Martin A. 90 poster: Does Dose Escalation to a Dominant Intraprostatic Lesion in a Permanent Implant Increase Prostate Dose Parameters? Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(15)34347-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Lavallee M, Gingras L, Aubin S, Cote C, Larochelle M, Chretien M, Beaulieu L. Full 3D Dose Calculations for Total Body Irradiation: A Comparison Study between Treatment Planning Systems in Homogeneous and Heterogeneous Conditions. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lavallée MC, Gingras L, Aubin S, Côté C, Larochelle M, Chrétien M, Beaulieu L. Poster - Thurs Eve-39: Full 3D dose calculation for total body irradiation: A comparison study between treatment planning systems in homogeneous and heterogeneous conditions. Med Phys 2008; 35:3408. [DOI: 10.1118/1.2965958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lavallee M, Gingras L, Aubin S, Cote C, Chretien M, Beaulieu L. SU-GG-T-514: Full 3D Heterogeneous Dose Calculation for Total Body Irradiation: A Comparison Study Between Different Treatment Planning Systems. Med Phys 2008. [DOI: 10.1118/1.2962263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Gomez E, Aubin S, Orozco LA, Sprouse GD, Iskrenova-Tchoukova E, Safronova MS. Nuclear magnetic moment of 210Fr: a combined theoretical and experimental approach. Phys Rev Lett 2008; 100:172502. [PMID: 18518284 DOI: 10.1103/physrevlett.100.172502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2007] [Indexed: 05/26/2023]
Abstract
We measure the hyperfine splitting of the 9S_{1/2} level of 210Fr, and find a magnetic dipole hyperfine constant A=622.25(36) MHz. The theoretical value, obtained using the relativistic all-order method from the electronic wave function at the nucleus, allows us to extract a nuclear magnetic moment of 4.38(5)micro_{N} for this isotope, which represents a factor of 2 improvement in precision over previous measurements. The same method can be applied to other rare isotopes and elements.
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Affiliation(s)
- E Gomez
- Department of Physics and Astronomy, SUNY Stony Brook, Stony Brook, New York 11794-3800, USA
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Gwinner G, Gomez E, Orozco LA, Perez Galvan A, Sheng D, Zhao Y, Sprouse GD, Behr JA, Jackson KP, Pearson MR, Aubin S, Flambaum VV. Fundamental symmetries studies with cold trapped francium atoms at ISAC. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s10751-007-9523-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Foster W, Aubin S, Varfalvy N, Beaulieu L, Martin A, Vigneault É. 2295. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Beaulieu L, Aubin S, Varfalvy N, Lessard E, Pouliot J, Vigneault E, Martin AG. Po-Thur Eve General-31: Dosimetric Impact of Planning a Boost within a Boost in Permanent Seed Implants. Med Phys 2006. [DOI: 10.1118/1.2244658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Beaulieu L, Aubin S, Varfalvy N, Lessard E, Pouliot J, Vigneault E, Martin AG. SU-FF-T-112: Boost Within a Boost in Permanent Seed Implants: Dosimetric and Clinical Impact. Med Phys 2006. [DOI: 10.1118/1.2241037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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36
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Aubin S, Higano CS. Partners assessment of sexual function on androgen suppression (AS) for treatment of biochemical relapse of prostate cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.8261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Aubin S, Gomez E, Orozco LA, Sprouse GD. Lifetime measurement of the 9s level of atomic francium. Opt Lett 2003; 28:2055-2057. [PMID: 14587813 DOI: 10.1364/ol.28.002055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We use two-photon resonant excitation and time-correlated single-photon counting techniques on a sample of 210Fr atoms confined and cooled in a magneto-optical trap to measure the lifetime of the 9s excited level. Direct measurement of the decay through the 7P(3/2) level at 851 nm yields a lifetime of 107.53 +/- 0.80 ns.
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Affiliation(s)
- S Aubin
- Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800, USA
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Aubin S, Beaulieu L, Pouliot S, Pouliot J, Roy R, Girouard LM, Martel-Brisson N, Vigneault E, Laverdière J. Robustness and precision of an automatic marker detection algorithm for online prostate daily targeting using a standard V-EPID. Med Phys 2003; 30:1825-32. [PMID: 12906201 DOI: 10.1118/1.1584041] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
An algorithm for the daily localization of the prostate using implanted markers and a standard video-based electronic portal imaging device (V-EPID) has been tested. Prior to planning, three gold markers were implanted in the prostate of seven patients. The clinical images were acquired with a BeamViewPlus 2.1 V-EPID for each field during the normal course radiotherapy treatment and are used off-line to determine the ability of the automatic marker detection algorithm to adequately and consistently detect the markers. Clinical images were obtained with various dose levels from ranging 2.5 to 75 MU. The algorithm is based on marker attenuation characterization in the portal image and spatial distribution. A total of 1182 clinical images were taken. The results show an average efficiency of 93% for the markers detected individually and 85% for the group of markers. This algorithm accomplishes the detection and validation in 0.20-0.40 s. When the center of mass of the group of implanted markers is used, then all displacements can be corrected to within 1.0 mm in 84% of the cases and within 1.5 mm in 97% of cases. The standard video-based EPID tested provides excellent marker detection capability even with low dose levels. The V-EPID can be used successfully with radiopaque markers and the automatic detection algorithm to track and correct the daily setup deviations due to organ motions.
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Affiliation(s)
- S Aubin
- Centre Hospitalier Universitaire de Québec (L'Hôtel-Dieu) and Centre de Recherche en Cancérologie de l'Université Laval, 11 Côte du Palais, Quebec, QC, G1R 2J6, Canada
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Beaulieu L, Girouard L, Aubin S, Brouard L, Bergeron C, Roy-Lacroix L, Dumont J, Tremblay D, Laverdiere J, Vigneault E. Performing daily prostate targeting with a standard V-EPID and an automated radio-opaque marker detection algorithm. Int J Radiat Oncol Biol Phys 2002. [DOI: 10.1016/s0360-3016(02)03369-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Aubin S, Le Floch F, Carrié D, Guegan JP, Vaultier M. Transition-Metal-Catalyzed Hydrosilylation and Hydroboration of Terminal Alkynes in Ionic Liquids. ACS Symposium Series 2002. [DOI: 10.1021/bk-2002-0818.ch026] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- S. Aubin
- Institut de Chimie de Rennes, UMR CNRS 6510, Campus de Beaulieu, Université Rennes 1, Avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - F. Le Floch
- Institut de Chimie de Rennes, UMR CNRS 6510, Campus de Beaulieu, Université Rennes 1, Avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - D. Carrié
- Institut de Chimie de Rennes, UMR CNRS 6510, Campus de Beaulieu, Université Rennes 1, Avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - J. P. Guegan
- Institut de Chimie de Rennes, UMR CNRS 6510, Campus de Beaulieu, Université Rennes 1, Avenue du Général Leclerc, F-35042 Rennes Cedex, France
| | - M. Vaultier
- Institut de Chimie de Rennes, UMR CNRS 6510, Campus de Beaulieu, Université Rennes 1, Avenue du Général Leclerc, F-35042 Rennes Cedex, France
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Williams C, Aubin S, Harkin P, Cottrell D. A randomized, controlled, single-blind trial of teaching provided by a computer-based multimedia package versus lecture. Med Educ 2001; 35:847-54. [PMID: 11555222 DOI: 10.1046/j.1365-2923.2001.00960.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
BACKGROUND Computer-based teaching may allow effective teaching of important psychiatric knowledge and skills. AIMS To investigate the effectiveness and acceptability of computer-based teaching. METHOD A single-blind, randomized, controlled study of 166 undergraduate medical students at the University of Leeds, involving an educational intervention of either a structured lecture or a computer-based teaching package (both of equal duration). RESULTS There was no difference in knowledge between the groups at baseline or immediately after teaching. Both groups made significant gains in knowledge after teaching. Students who attended the lecture rated their subjective knowledge and skills at a statistically significantly higher level than students who had used the computers. Students who had used the computer package scored higher on an objective measure of assessment skills. Students did not perceive the computer package to be as useful as the traditional lecture format, despite finding it easy to use and recommending its use to other students. CONCLUSIONS Medical students rate themselves subjectively as learning less from computer-based as compared with lecture-based teaching. Objective measures suggest equivalence in knowledge acquisition and significantly greater skills acquisition for computer-based teaching.
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Affiliation(s)
- C Williams
- Department of Psychological Medicine, Academic Centre, Gartnavel Royal Hospital, Glasgow, UK.
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Aubin S, Farant JP. Benzo[b]fluoranthene, a potential alternative to benzo[a]pyrene as an indicator of exposure to airborne PAHs in the vicinity of Söderberg aluminum smelters. J Air Waste Manag Assoc 2000; 50:2093-101. [PMID: 11140138 DOI: 10.1080/10473289.2000.10464236] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Benzo[b]fluoranthene (B[b]F) was used in relative abundance ratios (RARs), a parameter obtained by dividing the concentration of individual polycyclic aromatic hydrocarbons (PAHs) found in a given sample by the concentration of B[b]F in the same sample. The B[b]F RARs were derived for PAH concentrations measured at stacks and sampling stations in the vicinity of two Söderberg aluminum horizontal stud smelters (HSSs). The samples collected were analyzed by high-performance liquid chromatography using UV and fluorescence detection. A total of 15 PAHs were analyzed, but, due to the inefficiency of the sampling method used in collecting gaseous PAHs, only particulate PAHs were considered. Comparisons between the B[b]F RARs obtained simultaneously at the source (stack) and those obtained at sampling stations at the two smelters showed that B[b]F degrades more slowly than or at the same rate as most other particulate PAHs monitored. Twenty-three months of urban sampling in the vicinity of one of the aluminum HSSs are also presented, and the results indicate that B[b]F is more stable than all other particulate PAHs investigated. Sampling conducted during a smelter shutdown period confirmed that B[b]F was a much better marker of this source than was benzo[a]pyrene (B[a]P), the usual indicator. The remarkable stability of the benzo[k]fluoranthene (B[k]F)/B[b]F ratio is also discussed.
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Affiliation(s)
- S Aubin
- Department of Chemistry, McGill University, Montréal, Québec, Canada
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Abstract
We report a case of acute intoxication due to a massive overdose of isotretinoin. A 29-year-old male patient ingested 900 mg of isotretinoin corresponding to 12.5 mg (kg/day) or 30 times the prescribed dosage and 1 day later the patient experienced mild headache. Forty-eight hours later, cheilitis, diffuse cutaneous xerosis and desquamation of the forehead and of the external auditory meatus occurred; cutaneous xerosis and cheilitis resolved spontaneously, We determined the serum level of isotretinoin and of 4-oxo-isotretinoin, its natural metabolite in sera taken 4, 5, 6 and 11 days following ingestion. The side-effects were mild and represented only exacerbations of some common isotretinoin side-effects. To date, three other cases of isotretinoin overdosage have been reported. There was a low toxicity of isotretinoin overdose.
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Affiliation(s)
- S Aubin
- Department of Dermatology, University Medical Center, Tours, France
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Aubin S. [Patient care planning in a nursing home]. Infirm Can 1985; 27:34-8. [PMID: 3843984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Aubin S. [Outline and evaluation of an integration project for confused elderly in a group home.]. Sante Ment Que 1984; 9:143-9. [PMID: 17093810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In this article, the author proposes a behavioral evaluation model. The model takes into consideration both the resources and the limits of the person. This approach is employed with elderly persons who are considered to be <<confused>>. Their integration in reception centers poses many problems for helpers in those settings. In this project attention was paid to, among other subjects, attitudes toward the <<confused>> elderly person, the physical and human environment, and the training of personnel. The initial results show that it is possible to better integrate these persons and to improve their behavioral ability.
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