Showing 1,781 - 1,800 results of 1,941 for search '"Physicist"', query time: 0.18s Refine Results
  1. 1781

    Evaluation Treatment Planning for Breast Cancer Based on Dose-Response Model by Siti Aisyah, Aditya Prayugo Hariyanto, Endarko Endarko, Agus Rubiyanto, Nasori Nasori, Mohammad Haekal, Andreas Nainggolan

    Published 2021-01-01
    “…The delivery of radiation therapy to patients requires prior planning made by medical physicists to achieve radiotherapy goals. Radiotherapy has a plan to eradicate the growth of cancer cells by giving high doses and minimizing the radiation dose to normal tissue. …”
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  2. 1782

    Noether and Hilbert (metric) energy-momentum tensors are not, in general, equivalent by Mark Robert Baker, Natalia Kiriushcheva, Sergei Kuzmin

    Published 2021-01-01
    “…Due to this fact, it is often asserted that these methods are generally equivalent for any theory considered, and that this gives physicists a freedom in using either method to derive an energy-momentum tensor depending on the problem at hand. …”
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  3. 1783

    Evidence-based region of interest matching guidelines for sarcoma volumetric image-guided radiation therapy by Winnie Li, Samuel Appiah, Christine Hill, Nathan Becker, Charles Catton, Peter Chung, David Shultz, Peter Ferguson, Brian O'Sullivan, Colleen Dickie

    Published 2018-03-01
    “…Methods: Based on anatomic bony surrogates, initial ROI matching guidelines for STS were developed by a team of radiation therapists, physicists and oncologists (Plan). Retrospective, qualitative evaluation of the guidelines was completed by the designated sarcoma lead therapist to determine clinical feasibility (Do). …”
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  4. 1784

    Improving Management and Compliance of Radiation Therapy Linear Accelerator Quality Assurance Program With Automated Tracking Tools by Yulia Lyatskaya, PhD, Joseph Killoran, PhD, Jacek Kukluk, PhD, Robert Cormack, PhD, Sarah Quirk, PhD

    Published 2024-05-01
    “…The main improvement was observed for tests that were implemented more recently, eg, imaging QA and formal recording of daily QA review by physicists. The coefficient of variation was reduced by approximately a factor of 2 for imaging QA after the implementation of the QA Dashboard. …”
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  5. 1785

    In Vivo Dosimetry Using a Flat Surface Sun Nuclear Corporation Diode in 60co Beams for Some Radiotherapy Treatments in Ghana by Eric Manson, Vivian Atuwo‑Ampoh, Samuel Tagoe, Emmanuel Fiagbedzi, Eric Addison, Cyril Schandorf

    Published 2019-09-01
    “…The implementation of an in vivo dosimetry still remains as a challenge to clinical medical physicists. As a result, the practice of constant monitoring of patients undergoing radiation therapy in most of the radiotherapy departments in Africa has not been given much attention. …”
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  6. 1786

    A new wave of leaders: Early evaluation of the interdisciplinary Foundations of Leadership in Radiation Oncology (FLiRO) program by Sandra Turner, Kim Benstead, Barbara-Ann Millar, Lucinda Morris, Matthew Seel, Michelle Leech, Jesper G Eriksen, Meredith Giuliani

    Published 2022-12-01
    “…Results: 170 participants from 36 countries and 6 continents took part from 2018 to 2021 (99 doctors, 36 physicists, 32 radiation therapists/RTTs and 3 others). 141 (83%) participants responded to the post-program survey. …”
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  7. 1787

    Laziness, barren plateau, and noises in machine learning by Junyu Liu, Zexi Lin, Liang Jiang

    Published 2024-01-01
    “…We discuss the difference between laziness and barren plateau in quantum machine learning created by quantum physicists in McClean et al (2018 Nat. Commun. 9 1–6) for the flatness of the loss function landscape during gradient descent. …”
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  8. 1788

    Assessment of Radiation Dose to the Lens of the Eye and Thyroid of Patients Undergoing Head and Neck Computed Tomography at Five Hospitals in Mashhad, Iran by Mohammad Taghi Bahreyni Toossi, Hoda Zare, Zahra Eslami, Shahram Bayani Roodi, Mohammad Daneshdoust, Zarif Saeed, Mahdi Sedighpour, Nastaran Mohammadian, Mohammad Hashemi, Khani Afsaneh

    Published 2018-10-01
    “…In recent years, radiobiologists and health physicists have been more concerned about the safety of lenses of the eyes, as cataract is no longer considered a deterministic effect. …”
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  9. 1789
  10. 1790

    Dosimetrical and radiobiological approach to manage the dosimetric shift in the transition of dose calculation algorithm in radiation oncology: how to improve high quality treatmen... by Abdulhamid Chaikh, Jarkko Ojala, Catherine Khamphan, Robin Garcia, Jean Yves Giraud, Juliette Thariat, Jacques Balosso

    Published 2018-04-01
    “…The change of dose calculation algorithm may induce a dosimetric shift, which has to be evaluated by the physicists and the oncologists. This includes the impact on tumor control and on the risk of toxicity based on normal tissue dose constraints. …”
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  11. 1791

    Spatially fractionated stereotactic body radiation therapy (Lattice) for large tumors by Sai Duriseti, MD, PhD, James Kavanaugh, MS, Sreekrishna Goddu, PhD, Alex Price, MS, Nels Knutson, PhD, Francisco Reynoso, PhD, Jeff Michalski, MD, Sasa Mutic, PhD, Clifford Robinson, MD, Matthew B. Spraker, MD, PhD

    Published 2021-05-01
    “…Results: All generated plans met the standard SBRT dose constraints, such as those from the American Association of Physicists in Medicine Task Group 101. Additionally, we provide a step-by-step approach to generate and deliver Lattice SBRT plans using commercially available treatment technology. …”
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  12. 1792

    Fetal organ dose assessment during pelvic CT examination using Monte Carlo/GATE simulation and pregnancy voxelized phantom Katja by Benameur Y., Tahiri M., Mkimel M., El Baydaoui R., Mesradi M.R., El hariri B.

    Published 2022-01-01
    “…Accepting the possibility of adverse effects from fetal exposure and the inability to measure directly in vivo [1]. Medical physicists have developed several techniques to determine the amount of radiation that reaches the fetus. …”
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  13. 1793

    Comparison of Dosimetry Protocols for Electron Beam Radiotherapy Calibrations and Measurement Uncertainties by Fawzia E. M. Elbashir, Wassim Ksouri, Mohamed Hassan Eisa, Sitah Alanazi, Farouk Habbani, Abdelmoneim Sulieman, David A. Bradley, Ibrahim I. Suliman

    Published 2021-12-01
    “…This paper presents guidelines for the calibration of radiation beams that were issued by the International Atomic Energy Agency (IAEA TRS 398), the American Association of Physicists in Medicine (AAPM TG 51) and the German task group (DIN 6800-2). …”
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  14. 1794

    Status of Government-Funded Radiotherapy Services in Nigeria by Simeon C. Aruah, Runcie C.W. Chidebe, Tochukwu C. Orjiakor, Fatima Uba, Uchechukwu N. Shagaya, Charles Ugwanyi, Aisha A. Umar, Taofeeq Ige, Obinna C. Asogwa, Oiza T. Ahmadu, Musa Ali-Gombe, Alabi Adewumi, Vitalis C. Okwor, Jimoh A. Mutiu, Basheer Bello, Lucy O. Eriba, Yusuf A. Ahmed, Awwal Bisalla, Ukamaka Itanyi, Ramatallah A. Balogun, Suleiman Alabi, David Pistenmaa, C. Norman Coleman, Dosanjh Manjit

    Published 2023-06-01
    “…All of the centers lack residency training programs for medical physicists and radiation therapy technologists resulting in very few well-trained staff.CONCLUSIONAs the Nigerian Government plans for the new National Cancer Control Plan, there is an urgent need to scale up access to RT by upgrading the RT equipment, workforce, and infrastructure to meet the current needs of Nigerian patients with cancer. …”
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  15. 1795

    Seminar Kebangsaan Fizik dalam Industri : [kertaskerja]/ by Seminar Kebangsaan Fizik dalam Industri (1990 : Universiti Teknologi Malaysia, Sekudai), Universiti Teknologi Malaysia. Fakulti Sains. Jabatan Fizik

    Published 1990
    “…Kandungan : Kehendak dan masaalah industri di Malaysia/ Ahmad Tajuddin Ali -- Educating physicists for industrial roles : the case of BSc (Hons) Industrial Science (Physics) course of UTM/ Ahmad Termizi Ramli -- Pertimbangan membina kurikulum fizik dalam industri/ Dr Khalijah Md Salleh -- Arah dan matlamat pendidikan fizik di Malaysia/ Dr Abd Latiff Awang -- Rancangan fizik gunaan dalam perkembangan industri/ Dr Hu Shze Jer -- Teknik radioisotop dalam industri/ Roslan Md Ali -- Belauan sudut kecil sinar-x dan neutron : beberapa penemuan dan penggunaan di industri/ Dr Shahidan Radiman -- NMR and quantitative measurements of fat and water/ Dr Salleh Harun -- Industrial applications of internal structure imaging using ionizing radiations/ Dr Zainal Abidin Sulaiman -- Fabrication of discrete electronic devices using neutron transmutation doping techniques/ Dr Zahari Mohd Darus, Dr Burhanuddin Yeop Majlis, Dr Shahbudin Shaari -- The use of ionizing radiation in medicine/ Noriah Jamal, Md Saion Salikin -- Aspekpenyelenggaraan alat dalam sektor kerajaan - suatu penyelesaian ?…”
  16. 1796

    A Comparison of the Dosimetric Parameters of Cs-137 Brachytherapy Source in Different Tissues with Water Using Monte Carlo Simulation by Sedigheh Sina, Reza Faghihi, Ali Soleymani Meigooni

    Published 2012-03-01
    “…Introduction After the publication of Task Group number 43 dose calculation formalism by the American Association of Physicists in Medicine (AAPM), this method has been known as the most common dose calculation method in brachytherapy treatment planning. …”
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  17. 1797

    Beyond the Clinic Walls: Examining Radiology Technicians’ Experiences in Home-Based Radiography by Graziano Lepri, Francesco Oddi, Rosario Alfio Gulino, Daniele Giansanti

    Published 2024-03-01
    “…This study encourages expansion involving other key figures in this practice, including, naturally, medical radiologists, general practitioners, medical physicists, and other stakeholders.…”
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  18. 1798

    Machine vision-based Statistical texture analysis techniques for characterization of liver tissues using CT images by Mehrun Nisa, Saeed Ahmad Buzdar, Muhammad Arshad Javid, Muhamamd Saeed Ahmad, Ayesha Ikhlaq, Sadia Riaz

    Published 2022-08-01
    “…Conclusion: Abnormalities in the human liver could be discriminated and diagnosed by texture analysis techniques using second-order statistics that may assist the radiologist and medical physicists in predicting the severity and proliferation of abnormalities in liver diseases. …”
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  19. 1799

    Implementing and Integrating a Clinically-Driven Electronic Medical Record (EMR) for Radiation Oncology in a Large Medical Enterprise by John Paxton Kirkpatrick, Kim L. Light, Robyn M. Walker, Debra S. Georgas, Phillip A. Antoine, Robert W. Clough, Heidi B. Cozart, Fang-Fang eYin, Sua eYoo, Christopher G. Willett

    Published 2013-04-01
    “…Key goals included the ability to readily access information wherever and whenever needed, without compromising safety, treatment quality, confidentiality or productivity.Methodology: In February, 2009, we formed a multi-disciplinary team of Radiation Oncology physicians, nurses, therapists, administrators, physicists/dosimetrists, and information technology (IT) specialists, along with staff from the Duke Health System IT department. …”
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  20. 1800

    A practical approach to estimating optic disc dose and macula dose without treatment planning in ocular brachytherapy using 125I COMS plaques by Yongsook C. Lee, Shih-Chi Lin, Yongbok Kim

    Published 2018-11-01
    “…Methods An in-house brachytherapy dose calculation program utilizing the American Association of Physicists in Medicine Task Group-43 U1 formalism with a line source approximation in a homogenous water phantom was developed and validated against three commercial treatment planning systems (TPS). …”
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