DOCSLIB.ORG

Yadro-2016.Pdf

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Yadro-2016.Pdf к 70-летию РФЯЦ-ВНИИЭФ to 70th anniversary of Russian Federal Nuclear Center - VNIIEF ТЕЗИСЫ ДОКЛАДОВ ABSTRACTS Саров 2016 УДК 539.1 ББК 22.334, 22.383 М 43 66-я международная конференция по проблемам ядерной спектроскопии М 43 и структуре атомного ядра «Ядро-2016». Тезисы. Составители Ершкова И. А., Константинова О. В., Селина М. Д. – Саров: ФГУП «РФЯЦ-ВНИИЭФ», 2016, с. 203. – ил. ISBN 978-5-9515-0329-9 В сборник включены тезисы докладов 66-й международной конференции «Ядро-2016», подготовленные учеными и специалистами ФГУП «РФЯЦ-ВНИИЭФ», ОИЯИ, ФГУП ВНИИА, НИЯУ МИФИ, ВГУ г. Воронеж, ИЯФ РК г. Алматы, НИИ ЭТФ КазНУ г. Алаты, СПбГУ, НИЦ «Курчатовский институт», ПИЯФ, ИТЭФ, МГУ им. Ломоносова и др. Сборник издан при поддержке гранта РФФИ № 16-02-20056\16 от 09.03.2016. УДК 539.1 ББК 22.334, 22.383 ISBN 978-5-9515-0329-9 © Оформление. ФГУП «РФЯЦ-ВНИИЭФ», 2016 66-я МЕЖДУНАРОДНАЯ КОНФЕРЕНЦИЯ ПО ПРОБЛЕМАМ ЯДЕРНОЙ СПЕКТРОСКОПИИ И СТРУКТУРЕ АТОМНОГО ЯДРА «ЯДРО-2016» Саров, 11–14 октября 2016 г. Организатор – Российский федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики Hosting Institution: Russian Federal Nuclear Center – All-Russian Research Institute of Experimental Physics Председатель оргкомитета Organizing Committee Chairman Илькаев Р. И. – научный руководитель РФЯЦ- Radii I. Ilkaev, Academician of RAS, Scientific ВНИИЭФ, академик РАН Director of RFNC-VNIIEF Заместитель председателя Vice-Chairman Завьялов Н. В. – заместитель научного Nikolay V. Zavyalov, Director of Institute руководителя ФГУП «РФЯЦ-ВНИИЭФ» – of Nuclear and Radiation Physics, RFNC-VNIIEF директор Института ядерной и радиационной физики (ИЯРФ) Program Committee Sergey V. Vorontsov – Chairman Председатель программного комитета Deputy Director of Institute of Nuclear Воронцов С. В. – ФГУП «РФЯЦ-ВНИИЭФ», and Radiation Physics, RFNC-VNIIEF первый заместитель директора ИЯРФ Члены программного комитета: Абрамович С. Н. (ВНИИЭФ, Саров, Россия) Abramovich S. N. (Russia) Буртебаев Н. Т. (ИЯФ РК, Алматы, Казахстан)) Burtebaev N. T. (Kazakhstan) Варламов В. В. (МГУ, Москва, Россия) Varlamov V. V. (Russia) Власников А. К. (СПбГУ, С.-Петербург, Россия) Vlasnikov A. K. (Russia) Генералов Л. Н. (ВНИИЭФ, Саров, Россия) Generalov L. N. (Russia) Зеленская Н. С. (МГУ, Москва, Россия) Zelenskaya N. S. (Russia) Изосимов И. Н. (ОИЯИ, Дубна, Россия) Izosimov I. N. (Russia) Кадменский С. Г. (ФГБОУ ВО «ВГУ», Воронеж, Kadmenskiy S. G. (Russia) Россия) Картанов С. А. (ВНИИЭФ, Саров, Россия) Kartanov S. A. (Russia) Колесов В. Ф. (ВНИИЭФ, Саров, Россия) Kolesov V .F. (Russia) Кувшинов М. И. (ВНИИЭФ, Саров, Россия) Kuvshinov M. I. (Russia) Нефедов Ю. Я. (ВНИИЭФ, Саров, Россия) Nefedov J. Ya. (Russia) Сахиев С. К. (ИЯФ РК, Алматы, Казахстан) Sakhnev S. K. (Kazakhstan) Скобелев Н. К. (ОИЯИ, Дубна, Россия) Skobelev N. K. (Russia) Таова С. М. (ВНИИЭФ, Саров, Россия) Taova S. M. (Russia) Таценко М. В. (ВНИИЭФ, Саров, Россия) Tastenko M. V. (Russia) Урин М. Г. (НИЯУ МИФИ, Москва) Urin M. G. (Russia) Секция 1 СВОЙСТВА АТОМНЫХ ЯДЕР (ТЕОРИЯ И ЭКСПЕРИМЕНТ) Секция 1. СВОЙСТВА АТОМНЫХ ЯДЕР (ТЕОРИЯ И ЭКСПЕРИМЕНТ) СТРУКТУРА approximation // Phys. Rev. C. 2012. Vol. 86. + 88,90 ВОЗБУЖДЕНИЙ 21,2 В Sr P. 024311-1–024311-8. 2. Severyukhin A. P., Arsenyev N. N., Pietralla N., Н. Н. Арсеньев, А. П. Северюхин Werner V. Impact of variational space on M1 transitions between first and second quadrupole ex- 132,134,136 Лаборатория Теоретической Физики citations in Te // Phys. Rev. C. 2014. им. Н. Н. Боголюбова, Vol. 90. P. 011306-1–011306-4. Объединенный Институт Ядерных 3. Severyukhin A. P., Voronov V. V., Nguyen Исследований, Van Giai. Effects of phonon-phonon coupling on 141980 Дубна, Московская область, Россия, low-lying states in neutron-rich Sn isotopes // Eur. ул. Жолио-Кюри, 6 Phys. J. A. 2004. Vol. 22. P. 397–403. Тел.:+7(49621)63-665, Факс:+7(49621)65-084, 4. Nguyen Van Giai, Stoyanov Ch., [email protected] Voronov V. V. Finite rank approximation for random phase approximation calculations with Квадрупольные изовекторные возбуждения Skyrme interactions: an application to Ar isotopes // валентной оболочки в ядрах представляют собой Phys. Rev. C. 1998. Vol. 57. P. 1204–1209. уникальный полигон для изучения оболочечной 5. Severyukhin A. P., Voronov V. V., Nguyen структуры и изоспиновых степеней свободы. Van Giai. Effects of the particle-particle channel on Эти возбуждения, так называемые состояния properties of low-lying vibrational states // Phys. смешанной симметрии, были предсказаны в про- Rev. C. 2008. Vol. 77. P. 024322-1–024322-8. тон-нейтронной версии модели взаимодейст- вующих бозонов. Несимметричный протон- нейтронной вклад в волновую функцию состоя- + ния 2 можно интерпретировать как конфигура- T ционно-изоспиновую поляризацию, которая проявляется благодаря особенностям структуры. Состояния смешанной симметрии часто прояв- + ляются сильным M1 переходом между низколе- STRUCTURE OF 21,2 EXCITATIONS + жащими состояниями 2 . Свойства таких возбу- IN 88,90Sr ждений были изучены в рамках метода с эффек- тивными силами Скирма [1, 2] с учетом взаимо- N. N. Arsenyev, A. P. Severyukhin действия между простыми и сложными конфи- гурациями [3]. Сепарабельная аппроксимация Bogoliubov Laboratory of Theoretical Physics, Joint частично-дырочного взаимодействия позволяет Institute for Nuclear Research, выполнить расчеты в расширенном конфигура- 141980 Dubna, Jolio-Curie, 6, ционном пространстве [4, 5]. В данном докладе Moscow region, Russia, + 88,90 мы анализируем возбуждения 21,2 в Sr. Эта Phone: +7(49621)63-665, Fax: +7(49621)65-084, работа была выполнена при поддержке про- [email protected] граммы Гейзенберг – Ландау. Quadrupole isovector excitations of the valence Список литературы shell of nuclei represent a unique laboratory for studying the balance between collectivity, shell 1. Severyukhin A. P., Arsenyev N. N., structure, and the isospin degree of freedom. These Pietralla N. Proton-neutron symmetry in 92Zr, 94Mo excitations, so-called mixed-symmetry (MS) states, with Skyrme interactions in a separable have been predicted in the proton-neutron (pn) Свойства атомных ядер (теория и эксперимент) 7 version of the interacting boson model. An ИЗУЧЕНИЕ КЛАСТЕРНЫХ СВОЙСТВ unbalanced pn-content of the wave functions can be ЛЕГКИХ НЕЙТРОННО-ДЕФИЦИТНЫХ interpreted as configurational isospin polarization + ЯДЕР ВО ФРАГМЕНТАЦИИ НА ЯДРАХ which denotes varying contributions to the 2 states ФОТОЭМУЛЬСИИ by the active proton and neutron configurations due to subshell structure. M1 transitions between low- Д. А. Артеменков energy quadrupole excitations of the valence shell are often used as signature for states of MS- Объединенный институт ядерных исследований, character. Starting from a Skyrme interaction we 141980, ул. Жолио-Кюри д.6, Дубна, Московская study the properties of the low-energy spectrum of область, Российская Федерация, Тел. quadrupole excitations [1, 2]. The coupling between +7(49621)65-059, Факс +7(49621)65-146, one- and two-phonon terms in the wave functions of [email protected] excited states is taken into account [3]. We use the finite-rank separable approximation [4, 5] which enables one to perform the QRPA calculations in very large two-quasiparticle spaces. In the present STUDY OF LIGHT NEUTRON talk we study the evolution of first and second quadrupole excitations of 88,90Sr. The work was DEFICIENT NUCLEI CLUSTER supported by the Heisenberg–Landau program. STRUCTURE WITH NUCLEAR TRACK EMULSIONS References D. A. Artemenkov 1. Severyukhin A. P., Arsenyev N. N., Pietralla N. Proton-neutron symmetry in 92Zr, 94Mo with Joint Institute for Nuclear Research, 141980, Skyrme interactions in a separable approximation // st. Joliot-Curie 6, Dubna, Moscow region, Phys. Rev. C. – 2012. – Vol. 86. – P. 024311-1– Russian Federation, phone +7(49621)65-059, 024311-8. fax +7(49621)65-146, [email protected] 2. Severyukhin A. P., Arsenyev N. N., Pietralla N., Werner V. Impact of variational space on M1 В докладе обсуждаются последние результа- transitions between first and second quadrupole ты по исследованию кластерных свойств легких excitations in 132,134,136Te // Phys. Rev. C. – 2014. – ядер с использованием методики ядерных фото- Vol. 90. – P. 011306-1–011306-4. эмульсий (ЯЭ) [1–3]. Обсуждается роль изотопов 6 8 9 3. Severyukhin A. P., Voronov V. V., Nguyen Ве, Ве и В в описании спектров продуктов 7,9 10 10,11 Van Giai. Effects of phonon-phonon coupling on фрагментации ядер Be, B, C в исследова- low-lying states in neutron-rich Sn isotopes // Eur. ниях на вторичных пучках Нуклотрона ОИЯИ Phys. J. A. – 2004. – Vol. 22. – P.397–403. с использованием методики ядерных эмульсий 4. Nguyen Van Giai, Stoyanov Ch., Voronov V. [4–6]. 8 V. Finite rank approximation for random phase Облучение ЯЭ ядрами He с энергией approximation calculations with Skyrme 60 МэВ позволило идентифицировать их распа- interactions: an application to Ar isotopes // Phys. ды при остановке, оценить возможности Rev. C. – 1998. – Vol. 57. – P.1204–1209. α-спектрометрии и наблюдать дрейф термализо- 5. Severyukhin A. P., Voronov V. V., Nguyen ванных атомов 8Не. Корреляции α-частиц, изу- 12 Van Giai. Effects of the particle-particle channel on чавшиеся в расщеплениях С → 3α, вызванных properties of low-lying vibrational states // Phys. нейтронами c энергией 14,1 МэВ, указывают на Rev. C. – 2008. – Vol. 77. – P. 024322-1–024322-8. наличие суперпозиции состояний 0+ и 2+ ядра 8 12 Be в основном состоянии С. В ЯЭ, обогащен- ной бором, исследованы угловые корреляции фрагментов, Обсуждаются перспективы ЯЭ в T исследованиях
Load more

Recommended publications
  • Regulatory Actions in Radiotherapy
    August 10, 2017 CONSIDERATIONS ON POTENTIAL REGULATORY ACTIONS FOR RADIATION PROTECTION IN RADIOTHERAPY: MONITORING UNWANTED RADIATION EXPOSURE IN RADIOTHERAPY A proposal for further discussion drafted by Autoridad Regulatoria Nuclear of Argentina and the Secretariat of the International Atomic Energy Agency (Product from the Practical Arrangements between the International Atomic Energy Agency and the Autoridad Regulatoria Nuclear of Argentina on cooperation in the area of radiation safety and monitoring) Interim Document I. INTRODUCTION BACKGROUND (1) On September 18, 2015, the Autoridad Regulatoria Nuclear (ARN) 1 of Argentina and the Secretariat of the International Atomic Energy Agency (IAEA)2, hereinafter termed ‘the Parties’, agreed on ‘Practical Arrangements’ setting forth the framework for non-exclusive cooperation between the Parties in the area of radiation safety and monitoring. The agreement was reconfirmed and partially enhanced during ceremony presided by the Chairman of ARN, Néstor Masriera, and the Deputy Director General of the IAEA, Juan Carlos Lentijo, with the presence of the Argentine Ambassador, Rafael Mariano Grossi, in the framework of the 60th Annual Regular Session of the IAEA General Conference, in Vienna, on September 30, 2016. (2) The Practical Arrangements identify activities in which cooperation between the Parties may be pursued subject to their respective mandates, governing regulations, rules, policies and procedures. A relevant activity agreed to be pursued is the ‘development of regulatory guidance
    [Show full text]
  • Up FDG-PET in Patients with Localized Nasal Natural Killer/T-Cell Lymphoma Receiving Concurrent Chemoradiotherapy
    Original Article Page 1 of 9 Preliminary study of integrating pretreatment and early follow- up FDG-PET in patients with localized nasal natural killer/T-cell lymphoma receiving concurrent chemoradiotherapy Chen-Xiong Hsu1,2, Shan-Ying Wang2,3, Chiu-Han Chang1,2, Tung-Hsin Wu2, Shih-Chiang Lin4, Pei-Ying Hsieh4, Pei-Wei Shueng1,5,6 1Department of Radiation Oncology, Far Eastern Memorial Hospital, New Taipei City, Taiwan; 2Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, Taiwan; 3Department of Nuclear Medicine, 4Division of Medical Oncology and Hematology, Far Eastern Memorial Hospital, New Taipei City, Taiwan; 5Department of Medicine, National Yang-Ming University, Taipei, Taiwan; 6Department of Radiation Oncology, National Defense Medical Center, Taipei, Taiwan Contributions: (I) Conception and design: CX Hsu, TH Wu, PW Shueng; (II) Administrative support: TH Wu, SY Wang, SC Lin, PW Shueng; (III) Provision of study materials or patients: CX Hsu, SY Wang, SC Lin, PY Hsieh; (IV) Collection and assembly of data: CX Hsu, SY Wang, CH Chang; (V) Data analysis and interpretation: CX Hsu, SY Wang, PW Shueng; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors. Correspondence to: Pei-Wei Shueng, MD. Department of Radiation Oncology, Far Eastern Memorial Hospital, No. 21 Section 2, Nanya South Road, Banciao District, New Taipei City. Email: [email protected]; Tung-Hsin Wu, PhD. Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, No.155, Sec.2, Linong Street, Taipei. Email: [email protected]. Background: The optimal treatment modality for stage I/II extranodal nasal natural killer/T-cell lymphoma (NKTL) including radiotherapy (RT) alone, concurrent, or sequential chemoradiotherapy and radiation doses were not well-defined.
    [Show full text]
  • Should Helical Tomotherapy Replace Brachytherapy for Cervical Cancer?
    Hsieh et al. BMC Cancer 2010, 10:637 http://www.biomedcentral.com/1471-2407/10/637 CASE REPORT Open Access Should helical tomotherapy replace brachytherapy for cervical cancer? Case report Chen-Hsi Hsieh1,4, Ming-Chow Wei2, Yao-Peng Hsu3, Ngot-Swan Chong1, Yu-Jen Chen4,5,6,7, Sheng-Mou Hsiao2, Yen-Ping Hsieh8, Li-Ying Wang10, Pei-Wei Shueng1,9* Abstract Background: Stereotactic body radiation therapy (SBRT) administered via a helical tomotherapy (HT) system is an effective modality for treating lung cancer and metastatic liver tumors. Whether SBRT delivered via HT is a feasible alternative to brachytherapy in treatment of locally advanced cervical cancer in patients with unusual anatomic configurations of the uterus has never been studied. Case Presentation: A 46-year-old woman presented with an 8-month history of abnormal vaginal bleeding. Biopsy revealed squamous cell carcinoma of the cervix. Magnetic resonance imaging (MRI) showed a cervical tumor with direct invasion of the right parametrium, bilateral hydronephrosis, and multiple uterine myomas. International Federation of Gynecology and Obstetrics (FIGO) stage IIIB cervical cancer was diagnosed. Concurrent chemoradiation therapy (CCRT) followed by SBRT delivered via HT was administered instead of brachytherapy because of the presence of multiple uterine myomas with bleeding tendency. Total abdominal hysterectomy was performed after 6 weeks of treatment because of the presence of multiple uterine myomas. Neither pelvic MRI nor results of histopathologic examination at X-month follow-up showed evidence of tumor recurrence. Only grade 1 nausea and vomiting during treatment were noted. Lower gastrointestinal bleeding was noted at 14-month follow- up.
    [Show full text]
  • Implementation of Silicon Based Dosimeters, the Dose Magnifying
    University of Wollongong Research Online University of Wollongong Thesis Collection University of Wollongong Thesis Collections 2011 Implementation of silicon based dosimeters, the dose magnifying glass and magic plate for the dosimetry of modulated radiation therapy Jeannie Hsiu Ding Wong University of Wollongong Recommended Citation Wong, Jeannie Hsiu Ding, Implementation of silicon based dosimeters, the dose magnifying glass and magic plate for the dosimetry of modulated radiation therapy, Doctor of Philosophy thesis, Centre for Medical Radiation Physics, Engineering Physics, University of Wollongong, 2011. http://ro.uow.edu.au/theses/3348 Research Online is the open access institutional repository for the University of Wollongong. For further information contact Manager Repository Services: [email protected]. IMPLEMENTATION OF SILICON BASED DOSIMETERS, THE DOSE MAGNIFYING GLASS AND MAGIC PLATE FOR THE DOSIMETRY OF MODULATED RADIATION THERAPY A Thesis Submitted in Fulfilment of the Requirements for the Award of the Degree of Doctor of Philosophy from UNIVERSITY OF WOLLONGONG by Jeannie Hsiu Ding Wong BBiomed. Eng., MMed.Phys. Centre for Medical Radiation Physics, Engineering Physics Faculty of Engineering 2011 © Copyright 2011 by Jeannie Hsiu Ding Wong ALL RIGHTS RESERVED CERTIFICATION I, Jeannie Hsiu Ding Wong, declare that this thesis, submitted in fulfilment of the requirements for the award of Doctor of Philosophy, in the Centre for Medical Radia- tion Physics, Engineering Physics, Faculty of Engineering, University of Wollongong, is wholly my own work unless otherwise referenced or acknowledged. The document has not been submitted for qualifications at any other academic institution. (Signature Required) Jeannie Hsiu Ding Wong 30 June 2011 Table of Contents ListofTables................................... vi List of Figures/Illustrations ..........................
    [Show full text]
  • Four-Dimensional MVCT Imaging and Spatial Translation of Helical Tomotherapy Dose Distributions Using Sinogram Modification
    University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Masters Theses Graduate School 12-2006 Four-Dimensional MVCT Imaging and Spatial Translation of Helical Tomotherapy Dose Distributions Using Sinogram Modification Samuel Scott Outten University of Tennessee - Knoxville Follow this and additional works at: https://trace.tennessee.edu/utk_gradthes Part of the Physics Commons Recommended Citation Outten, Samuel Scott, "Four-Dimensional MVCT Imaging and Spatial Translation of Helical Tomotherapy Dose Distributions Using Sinogram Modification. " Master's Thesis, University of Tennessee, 2006. https://trace.tennessee.edu/utk_gradthes/1757 This Thesis is brought to you for free and open access by the Graduate School at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Masters Theses by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. To the Graduate Council: I am submitting herewith a thesis written by Samuel Scott Outten entitled "Four-Dimensional MVCT Imaging and Spatial Translation of Helical Tomotherapy Dose Distributions Using Sinogram Modification." I have examined the final electronic copy of this thesis for form and content and recommend that it be accepted in partial fulfillment of the equirr ements for the degree of Master of Science, with a major in Physics. E. Ward Plummer, Major Professor We have read this thesis and recommend its acceptance: Marianne Breinig, Robert Compton Accepted
    [Show full text]
  • Comparing Efficacy of High-Dose Rate Brachytherapy Versus Helical Tomotherapy in the Treatment of Cervical Cancer
    J Gynecol Oncol. 2020 Jul;31(4):e42 https://doi.org/10.3802/jgo.2020.31.e42 pISSN 2005-0380·eISSN 2005-0399 Original Article Comparing efficacy of high-dose rate brachytherapy versus helical tomotherapy in the treatment of cervical cancer Seongmin Kim ,1,2 Sanghoon Lee ,2 Jin Hwa Hong ,2 Young Je Park ,3 Jae Yun Song ,2 Jae Kwan Lee ,2 Nak Woo Lee 2 1Gynecologic Cancer Center, Department of Obstetrics & Gynecology, CHA University Ilsan Medical Center, Goyang, Korea 2Department of Obstetrics & Gynecology, Korea University College of Medicine, Seoul, Korea 3Department of Radiation Oncology, Korea University College of Medicine, Seoul, Korea Received: Jun 3, 2019 ABSTRACT Revised: Oct 30, 2019 Accepted: Dec 8, 2019 Objective: Boost radiation using brachytherapy (BT) is a standard treatment for local disease Correspondence to control in concomitant chemoradiation therapy (CCRT) for advanced cervical cancer. Jae Yun Song However, it is associated with gastrointestinal and genitourinary complications. Hence, this Department of Obstetrics and Gynecology, Korea University Medical Center, 73 study investigates the feasibility of helical tomotherapy (HT) as an alternative to BT. Goryeodae-ro, Seongbuk-gu, Seoul 02841, Methods: Medical records of patients who underwent CCRT between 2000 and 2017 at a single Korea. institution were retrospectively reviewed. Patients with stage IIB–IVA cancers were selected E-mail: [email protected] based on the 2009 criteria of The International Federation of Gynaecology and Obstetrics. External beam radiation combined with chemotherapy was followed by either BT or HT. The Copyright © 2020. Asian Society of Gynecologic Oncology, Korean Society of propensity score matching of both groups was calculated using logistic regression analysis.
    [Show full text]
  • Preliminary Results of Intensity-Modulated Radiation Therapy with Helical Tomotherapy for Prostate Cancer
    J Cancer Res Clin Oncol DOI 10.1007/s00432-012-1277-0 ORIGINAL PAPER Preliminary results of intensity-modulated radiation therapy with helical tomotherapy for prostate cancer Natsuo Tomita • Norihito Soga • Yuji Ogura • Norio Hayashi • Hidetoshi Shimizu • Takashi Kubota • Junji Ito • Kimiko Hirata • Yukihiko Ohshima • Hiroyuki Tachibana • Takeshi Kodaira Received: 5 May 2012 / Accepted: 21 June 2012 Ó Springer-Verlag 2012 Abstract Conclusions This preliminary report confirms the feasi- Purpose We present the preliminary results of intensity- bility of HT in a large number of patients. We observed modulated radiation therapy with helical tomotherapy (HT) that HT is associated with low rates of acute and late for clinically localized prostate cancer. toxicities, and HT in combination with relatively long-term Methods Regularly followed 241 consecutive patients, ADT results in excellent short-term bDFS. who were treated with HT between June 2006 and December 2010, were included in this retrospective study. Keywords Prostate cancer Á Intensity-modulated Most patients received both relatively long-term neoadju- radiation therapy Á Image-guided radiation therapy Á Helical vant and adjuvant androgen deprivation therapy (ADT). tomotherapy Patients received 78 Gy in the intermediate high-risk group and 74 Gy in the low-risk group. Biochemical disease-free survival (bDFS) followed the Phoenix definition. Toxicity Introduction was scored according to the Radiation Therapy Oncology Group morbidity grading scale. High-dose external beam radiation therapy (EBRT) with Results The median follow-up time from the start date of intensity-modulated radiation therapy (IMRT) has been HT was 35 months. The rates of acute Grade 2 gastro- shown to improve disease-free survival in patients with intestinal (GI) and genitor-urinary (GU) toxicities were localized prostate cancer over the past decade (Zelefsky 11.2 and 24.5 %.
    [Show full text]
  • The Effect and Stability of MVCT Images on Adaptive Tomotherapy
    JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS, VOLUME 11, NUMBER 4, fall 2010 The effect and stability of MVCT images on adaptive TomoTherapy Poonam Yadav1,2,4 Ranjini Tolakanahalli1,2 Yi Rong1,3 Bhudatt R Paliwal1,2 Department of Human Oncology,1 University of Wisconsin - Madison, Madison, WI; Department of Medical Physics,2 University of Wisconsin - Madison, Madison, WI; University of Wisconsin Riverview Cancer Centre,3 Wisconsin Rapids, WI; Vellore Institute of Technology University,4 Vellore, Tamil Nadu, India. [email protected] Received 1 December, 2009; accepted 5 May, 2010 Use of helical TomoTherapy-based MVCT imaging for adaptive planning is becoming increasingly popular. Treatment planning and dose calculations based on MVCT require an image value to electron density calibration to remain stable over the course of treatment time. In this work, we have studied the dosimetric impact on TomoTherapy treatment plans due to variation in image value to density table (IVDT) curve as a function of target degradation. We also have investigated the reproducibility and stability of the TomoTherapy MVCT image quality over time. Multiple scans of the TomoTherapy “Cheese” phantom were performed over a period of five months. Over this period, a difference of 4.7% in the HU values was observed in high-density regions while there was no significant variation in the image values for the low densities of the IVDT curve. Changes in the IVDT curves before and after target replacement were measured. Two clinical treatment sites, pelvis and prostate, were selected to study the dosimetric impact of this variation. Dose was recalculated on the MVCTs with the planned fluence using IVDT curves acquired before and after target change.
    [Show full text]
  • Nuclear Technology Review 2012
    Atoms for Peace General Conference GC (56)/INF/3 Date: 1 August 2012 General Distribution Original: English Fifty-sixth regular session Item 16 of the provisional agenda (GC(56)/1 and Add. 1) Nuclear Technology Review 2012 Report by the Director General Summary • In response to requests by Member States, the Secretariat produces a comprehensive Nuclear Technology Review each year. Attached is this year’s report, which highlights notable developments principally in 2011. • The Nuclear Technology Review 2012 covers the following areas: power applications, advanced fission and fusion, accelerator and research reactor applications, nuclear technology in food and agriculture, human health, environment, water resources, and radioisotope production and radiation technology. Additional documentation associated with the Nuclear Technology Review 2012 is available on the Agency’s website 1 in English on developing alternatives to gamma irradiation for the Sterile Insect Technique (SIT); imaging for breast cancer diagnosis and treatment, radiation technology applications in mining and mineral processing, technology options for a country’s first nuclear power plant, the role of research reactors in introducing nuclear power, and the use and management of sealed radioactive sources. • Information on the IAEA’s activities related to nuclear science and technology can also be found in the IAEA’s Annual Report 2011 (GC(56)/2), in particular the Technology section, and the Technical Cooperation Report for 2011 (GC(56)/INF/4). • The document has been modified to take account, to the extent possible, of specific comments by the Board of Governors and other comments received from Member States. __________________________________________________________________________________ 1 http://www.iaea.org/About/Policy/GC/GC56/Agenda/index.html GC(56)/INF/3 Page 1 Nuclear Technology Review 2012 2 Report by the Director General Executive Summary 1.
    [Show full text]
  • Re-Irradiation of Recurrent Glioblastoma Using Helical
    www.nature.com/scientificreports OPEN Re‑irradiation of recurrent glioblastoma using helical TomoTherapy with simultaneous integrated boost: preliminary considerations of treatment efcacy Donatella Arpa1*, Elisabetta Parisi1, Giulia Ghigi1, Alessandro Savini2, Sarah Pia Colangione1, Luca Tontini1, Martina Pieri1, Flavia Foca3, Rolando Polico1, Anna Tesei4, Anna Sarnelli2 & Antonino Romeo1 Although there is still no standard treatment for recurrent glioblastoma multiforme (rGBM), re‑irradiation could be a therapeutic option. We retrospectively evaluated the efcacy and safety of re‑irradiation using helical TomoTherapy (HT) with a simultaneous integrated boost (SIB) technique in patients with rGBM. 24 patients with rGBM underwent HT‑SIB. A total dose of 20 Gy was prescribed to the Flair (fuid‑attenuated inversion recovery) planning tumor volume (PTV) and 25 Gy to the PTV‑boost (T1 MRI contrast enhanced area) in 5 daily fractions to the isodose of 67% (maximum dose within the PTV‑boost was 37.5 Gy). Toxicity was evaluated by converting the 3D‑dose distribution to the equivalent dose in 2 Gy fractions on a voxel‑by‑voxel basis. Median follow‑up after re‑irradiation was 27.8 months (range 1.6–88.5 months). Median progression‑free survival (PFS) was 4 months (95% CI 2.0–7.9 months), while 6‑month PFS was 41.7% (95% CI 22.2–60.1 months). Median overall survival following re‑irradiation was 10.7 months (95% CI 7.4–16.1 months). There were no cases of re‑operation due to early or late toxicity. Our preliminary results suggest that helical TomoTherapy with the proposed SIB technique is a safe and feasible treatment option for patients with rGBM, including those large disease volumes, reducing toxicity.
    [Show full text]
  • Qualitative Evaluation of 2D Dosimetry System for Helical Tomotherapy
    Original Article PROGRESS in MEDICAL PHYSICS Vol. 25, No. 4, December, 2014 http://dx.doi.org/10.14316/pmp.2014.25.4.193 Qualitative Evaluation of 2D Dosimetry System for Helical Tomotherapy Sun Young Ma*, Tae Sig Jeung*, Jang Bo Shim†, Sangwook Lim* *Department of Radiation Oncology, Kosin University College of Medicine, Busan, †Department of Radiation Oncology, Guro Hospital, College of Medicine, Korea University, Seoul, Korea The purpose of this study is to see the feasibility of the newly developed 2D dosimetry system using phosphor screen for helical tomotherapy. The cylindrical water phantom was fabricated with phosphor screen to emit the visible light during irradiation. There are three types of virtual target, one is one spot target, another is C-shaped target, and the other is multiple targets. Each target was planned to be treated at 10 Gy by treatment planning system (TPS) of tomotherapy. The cylindrical phantom was placed on the tomotherapy table and irradiated as calculations of the TPS. Every frame which acquired by CCD camera was integrated and the doses were calculated in pixel by pixel. The dose distributions from the fluorescent images were compared with the calculated dose distribution from the TPS. The discrepancies were evaluated as gamma index for each treatment. The curve for dose rate versus pixel value was not saturated until 900 MU/min. The 2D dosimetry using the phosphor screen and the CCD camera is respected to be useful to verify the dose distribution of the tomotherapy if the linearity correction of the phosphor screen improved. Key Words: Tomotherapy, Phosphor screen, Dose distribution, Blur kernel, Gamma index ter free.
    [Show full text]
  • Intensity Modulated Radiation Therapy (IMRT)
    Computer Controlled Treatment Delivery: History, Issues and Safety Benedick A Fraass PhD, FAAPM, FASTRO, FACR Vice Chair for Research, Professor and Director of Medical Physics Department of Radiation Oncology Cedars-Sinai Medical Center, Los Angeles, CA 90048 Clinical Professor, Radiation Oncology, UCLA Professor Emeritus, University of Michigan CEDARS-SINAI LEADING THE QUEST Fraass, Therapy Review Course 2014 Acknowledgments Jean Moran PhD UM Martha Matuszak PhD UM Dan McShan PhD UM Marc Kessler PhD UM James Balter PhD UM Jean-Pierre Bissonette, PhD PMH John Humm, PhD MSKCC Fraass, Therapy Review Course 2014 Objectives Describe • The progression from manual setup and treatment to routine use of computer-controlled treatment delivery (CCTxD) and intensity modulated radiation therapy (IMRT) • Differences in treatment process using CCTxD compared to earlier manual setup techniques • Safety and Quality Assurance issues associated with use of CCTxD and IMRT treatment techniques • Some advantages of CCTxD and IMRT techniques Fraass, Therapy Review Course 2014 Computer Controlled Tx Delivery: History, Issues and Safety •Manual Treatment Delivery •Modern Computer-Controlled Treatment Delivery (CCTxD) •IMRT, IGRT, VMAT, 4-D:more complex! •Safety/QA Issues for CCTxD, IMRT •Conclusions Fraass, Therapy Review Course 2014 1950s-80s: 2-D Radiotherapy Fraass, Therapy Review Course 2014 1980s: CT-Based Planning Fraass, Therapy Review Course 2014 1986 – 1990s: Conformal Therapy A dose distribution 95 % Isodose Surface that conforms to the shape of the
    [Show full text]