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  1. Article ; Online: In the future all accredited radiotherapy physicists should have a PhD.

    Booth, Jeremy / Whitaker, May / Baldock, Clive

    Physical and engineering sciences in medicine

    2020  Volume 43, Issue 4, Page(s) 1139–1143

    MeSH term(s) Credentialing ; Health Physics ; Radiation Oncology
    Language English
    Publishing date 2020-09-21
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2662-4737
    ISSN (online) 2662-4737
    DOI 10.1007/s13246-020-00928-6
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  2. Article ; Online: COVID-19 pandemic planning: considerations for radiation oncology medical physics.

    Whitaker, May / Kron, Tomas / Sobolewski, Matthew / Dove, Richard

    Physical and engineering sciences in medicine

    2020  Volume 43, Issue 2, Page(s) 473–480

    MeSH term(s) Betacoronavirus/physiology ; COVID-19 ; Coronavirus Infections/epidemiology ; Health Planning ; Humans ; Pandemics ; Physics ; Pneumonia, Viral/epidemiology ; Radiation Oncology ; SARS-CoV-2
    Keywords covid19
    Language English
    Publishing date 2020-04-13
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2662-4737
    ISSN (online) 2662-4737
    DOI 10.1007/s13246-020-00869-0
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  3. Article: Robustness of IPSA optimized high-dose-rate prostate brachytherapy treatment plans to catheter displacements.

    Poder, Joel / Whitaker, May

    Journal of contemporary brachytherapy

    2016  Volume 8, Issue 3, Page(s) 201–207

    Abstract: Purpose: Inverse planning simulated annealing (IPSA) optimized brachytherapy treatment plans are characterized with large isolated dwell times at the first or last dwell position of each catheter. The potential of catheter shifts relative to the target ... ...

    Abstract Purpose: Inverse planning simulated annealing (IPSA) optimized brachytherapy treatment plans are characterized with large isolated dwell times at the first or last dwell position of each catheter. The potential of catheter shifts relative to the target and organs at risk in these plans may lead to a more significant change in delivered dose to the volumes of interest relative to plans with more uniform dwell times.
    Material and methods: This study aims to determine if the Nucletron Oncentra dwell time deviation constraint (DTDC) parameter can be optimized to improve the robustness of high-dose-rate (HDR) prostate brachytherapy plans to catheter displacements. A set of 10 clinically acceptable prostate plans were re-optimized with a DTDC parameter of 0 and 0.4. For each plan, catheter displacements of 3, 7, and 14 mm were retrospectively applied and the change in dose volume histogram (DVH) indices and conformity indices analyzed.
    Results: The robustness of clinically acceptable prostate plans to catheter displacements in the caudal direction was found to be dependent on the DTDC parameter. A DTDC value of 0 improves the robustness of planning target volume (PTV) coverage to catheter displacements, whereas a DTDC value of 0.4 improves the robustness of the plans to changes in hotspots.
    Conclusions: The results indicate that if used in conjunction with a pre-treatment catheter displacement correction protocol and a tolerance of 3 mm, a DTDC value of 0.4 may produce clinically superior plans. However, the effect of the DTDC parameter in plan robustness was not observed to be as strong as initially suspected.
    Language English
    Publishing date 2016-06-13
    Publishing country Poland
    Document type Journal Article
    ZDB-ID 2627721-9
    ISSN 2081-2841 ; 1689-832X
    ISSN (online) 2081-2841
    ISSN 1689-832X
    DOI 10.5114/jcb.2016.60499
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  5. Article ; Online: COVID-19 pandemic planning

    Whitaker, May / Kron, Tomas / Sobolewski, Matthew / Dove, Richard

    Physical and Engineering Sciences in Medicine

    considerations for radiation oncology medical physics

    2020  Volume 43, Issue 2, Page(s) 473–480

    Keywords covid19
    Language English
    Publisher Springer Science and Business Media LLC
    Publishing country us
    Document type Article ; Online
    ISSN 2662-4729
    DOI 10.1007/s13246-020-00869-0
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: COVID-19 pandemic planning

    Whitaker, May / Kron, Tomas / Sobolewski, Matthew / Dove, Richard

    Faculty of Engineering and Information Sciences - Papers: Part B

    considerations for radiation oncology medical physics

    2020  

    Keywords Engineering ; Science and Technology Studies ; covid19
    Publishing date 2020-01-01T08:00:00Z
    Publisher Research Online
    Publishing country au
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: High quality care following orthopaedic injury in Zambia: A qualitative, patient-centred study.

    Mayer, Ferdinand B R / Bulaya, Anadi / Grimes, Caris E / Kaja, Simba / Whitaker, John K H

    Injury

    2022  Volume 53, Issue 10, Page(s) 3172–3177

    Abstract: Background: Injuries are a significant cause of mortality and morbidity, particular in low- and middle-income countries (LMICs). While there is a focus on increasing injury care capacity, less attention is given to assessing, improving, and ... ...

    Abstract Background: Injuries are a significant cause of mortality and morbidity, particular in low- and middle-income countries (LMICs). While there is a focus on increasing injury care capacity, less attention is given to assessing, improving, and understanding the quality of care provided, especially from a patient perspective. This study therefore aims to understand what patients from a Zambian orthopaedic ward believe good quality care to be, to identify its key components, and contribute to better understanding what patients believe local healthcare priorities could be.
    Methods: Patients admitted to the orthopaedic ward of a Zambian tertiary care hospital were invited to take part in-depth face-to-face interviews. Interviews were continued until thematic saturation was achieved. Interviews were recorded and transcribed. Analysis was done using an inductive grounded theory approach.
    Results: Of 13 patients approached, 12 consented to take part. Analysis of the themes from the transcripts led to the emergence of four core categories of quality care which are important to the patient: i) restoring the patient to normality (category: 'restoring normality'), ii) establishing trust between patients and providers ('trusting the provider'), iii) respecting the patient and allowing them to maintain autonomy ('autonomy and respect') iv) finding ways for patients to enjoy their time in the hospital ('enjoying life'). From these results, a patient perspective theory of quality care emerged. This theory posits the idea that high-quality care in this context needs to fulfil these four core categories. Additionally, these core categories were ranked on significance and priority.
    Conclusion: The hierarchy of core categories could help to identify areas to improve care quality in this setting. Not only has this study helped to determine local priorities for achieving high-quality care but can encourage others to test injured patient perceptions of care quality in comparable settings.
    MeSH term(s) Humans ; Orthopedics ; Qualitative Research ; Quality of Health Care ; Trust ; Zambia/epidemiology
    Language English
    Publishing date 2022-07-08
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 218778-4
    ISSN 1879-0267 ; 0020-1383
    ISSN (online) 1879-0267
    ISSN 0020-1383
    DOI 10.1016/j.injury.2022.07.006
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  8. Article: A National Strategy to Diagnose COVID-19 Associated Invasive Fungal Disease in the ICU

    White, Lewis Dhillon Rishi Cordey Alan Hughes Harriet Faggian Federica Soni Shuchita Pandey Manish Whitaker Harriet May Alex Morgan Matt Wise Matthew Healy Brendan Blyth Ian Price Jessica S. / Vale, Lorna Posso Raquel Kronda Joanna Blackwood Adam Rafferty Hannah Moffitt Amy Tsitsopoulou Alexandra Gaur Soma Holmes Tom Backx Matthijs

    Abstract: Rationale: Fungal co-infection is a recognised complication of respiratory virus infections, increasing morbidity and mortality, but can be readily treated if ... ...

    Abstract Rationale: Fungal co-infection is a recognised complication of respiratory virus infections, increasing morbidity and mortality, but can be readily treated if d
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #1665
    Database COVID19

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  9. Article ; Online: High-dose-rate brachytherapy boost for prostate cancer: Outcomes and genitourinary toxicity.

    Bece, Andrej / Patanjali, Nitya / Jackson, Michael / Whitaker, May / Hruby, George

    Brachytherapy

    2015  Volume 14, Issue 5, Page(s) 670–676

    Abstract: Aims: To report disease outcomes and late urinary toxicity profile. To assess the impact of changing technique and evolving quality assurance on genitourinary toxicity rates.: Methods and materials: One hundred eighty patients were treated with ... ...

    Abstract Aims: To report disease outcomes and late urinary toxicity profile. To assess the impact of changing technique and evolving quality assurance on genitourinary toxicity rates.
    Methods and materials: One hundred eighty patients were treated with external beam radiation therapy and high-dose-rate brachytherapy (HDRB) for localized intermediate- and high-risk prostate cancer, between December 2002 and February 2012. The HDRB technique evolved over the period of this study, from 19.5 Gy/3 (n = 68), to 17 Gy/2 (n = 40), 18 Gy/2 (n = 39), and most recently 19 Gy/2 (n = 33). In the two fraction cohort, 68 patients underwent additional correction for catheter displacement before each fraction.
    Results: With a median followup of 5.2 years, 5-year freedom from failure was 93.7% for intermediate, and 76.0% for high risk patients. The 3- and 6-year cumulative stricture incidence for all patients was 7.8% and 15.3%, respectively. There was no statistically significant difference in stricture rate for the four dose levels used nor between the three fractions and the two fraction technique overall. The 19 Gy/2 fractionation group had the lowest 3-year stricture rate (3.0%). The addition of correction for intrafraction catheter displacement did not result in a statistically significant difference in stricture rates, although the severity of strictures has been reduced.
    Conclusions: Our biochemical control is consistent with other similar series. We found no increase in late urinary toxicity with a two fraction, two implant HDRB technique compared with three fractions. The HDRB dose did not correlate with stricture rates in our series. Correction of intra-fraction catheter displacement did not lead to a statistically significant reduction in stricture rates, although may have mitigated the effects of dose escalation.
    MeSH term(s) Aged ; Brachytherapy/adverse effects ; Brachytherapy/methods ; Constriction, Pathologic/etiology ; Dose Fractionation ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Prostate-Specific Antigen/blood ; Prostatic Neoplasms/blood ; Prostatic Neoplasms/radiotherapy ; Radiation Injuries/etiology ; Urinary Tract/radiation effects
    Chemical Substances Prostate-Specific Antigen (EC 3.4.21.77)
    Language English
    Publishing date 2015-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2098608-7
    ISSN 1873-1449 ; 1538-4721
    ISSN (online) 1873-1449
    ISSN 1538-4721
    DOI 10.1016/j.brachy.2015.04.004
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  10. Article ; Online: High dose rate brachytherapy source measurement intercomparison.

    Poder, Joel / Smith, Ryan L / Shelton, Nikki / Whitaker, May / Butler, Duncan / Haworth, Annette

    Australasian physical & engineering sciences in medicine

    2017  Volume 40, Issue 2, Page(s) 377–383

    Abstract: This work presents a comparison of air kerma rate (AKR) measurements performed by multiple radiotherapy centres for a single ... ...

    Abstract This work presents a comparison of air kerma rate (AKR) measurements performed by multiple radiotherapy centres for a single HDR
    Language English
    Publishing date 2017-06
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 46226-3
    ISSN 1879-5447 ; 0158-9938
    ISSN (online) 1879-5447
    ISSN 0158-9938
    DOI 10.1007/s13246-017-0542-6
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