Effects of Partial-Body, Continuous/Pulse Irradiation at Dose Rates from Flash to Conventional Rates on The Level of Surviving Blood Lymphocytes: Modeling Approach II. Two- and Multiple-Pulse Irradiation
Radiat Res. 2024 Apr 16. doi: 10.1667/RADE-23-00221.1. Online ahead of print.ABSTRACTMathematical models, which describe effects of partial-body, two- and multiple-pulse irradiation at high total doses D and at average dose rates N from FLASH to conventional rates on the level of surviving blood lymphocytes in humans and mice, have been developed originating in the previously proposed approach. These models predict that levels of surviving blood lymphocytes in humans and mice increase with increasing the dose rate from N = D / TR (TR is the time of the blood flowing into or out of the irradiated segment of the blood circul...
Source: Radiation Research - April 16, 2024 Category: Physics Authors: Francis A Cucinotta Olga A Smirnova Source Type: research
The effects of re-irradiation on the chemical and morphological properties of permanent teeth
This study aimed to assess the in vitro effects of re-irradiation on enamel and dentin properties, simulating head and neck cancer radiotherapy retreatment. Forty-five human permanent molars were classified into five groups: non-irradiated; irradiated 60 Gy, and re-irradiated with doses of 30, 40, and 50 Gy. Raman spectroscopy, scanning electron microscopy (SEM), and energy dispersive x-ray spectroscopy (EDS) were employed for analysis. Raman spectroscopy assessed intensity, spectral area, and specific peaks comparatively. Statistical analysis involved Kolmogorov-Smirnov and One-Way ANOVA tests, with Tukey's post-test (sig...
Source: Radiation and Environmental Biophysics - April 16, 2024 Category: Physics Authors: Thais Tedeschi Dos Santos Vicente Silva Mattos Kelly Fernanda Molena Francisco Wanderley Garcia de Paula-Silva Harley Francisco de Oliveira Juliana Jendiroba Faraoni Paulo Nelson-Filho Jarbas Caiado de Castro Neto Regina Guenka Palma-Dibb Alexandra Mussol Source Type: research
First implementation of an innovative infra-red camera system integrated into a mobile CBCT scanner for applicator tracking in brachytherapy-Initial performance characterization
CONCLUSION: We implemented for the first time a standalone combined camera-CBCT system for tracking in brachytherapy. The system showed high potential for establishing corresponding workflows.PMID:38626753 | DOI:10.1002/acm2.14364 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - April 16, 2024 Category: Physics Authors: Andre Karius Lisa Marie Leifeld Vratislav Strnad Rainer Fietkau Christoph Bert Source Type: research
Novel utilization and quantification of Xsight diaphragm tracking for respiratory motion compensation in Cyberknife Synchrony treatment of liver tumors
CONCLUSION: The diaphragm has the potential to serve as an alternative to gold fiducial markers for detecting liver tumors in close proximity or within it. We also found that we needed to reduce the motion amplitude and train the respiration of the patients during liver radiotherapy, as well as control and evaluate their breathing.PMID:38622894 | DOI:10.1002/acm2.14341 (Source: Journal of Applied Clinical Medical Physics)
Source: Journal of Applied Clinical Medical Physics - April 16, 2024 Category: Physics Authors: Jianping Zhang Lin Wang Chenyu Xie Zhiyu Yang Benhua Xu Xiaobo Li Source Type: research
Walking Activity and Physical Function Among Mexican American Older Adults Over 9 Years of Follow Up
CONCLUSIONS: Mexican American older adults who engage in any walking activity are at reduced risk of low physical function, even those with disability. Interventions at the individual and community level are recommended to reduce physical function impairment, even in those with preexisting medical conditions or disability.PMID:38626896 | DOI:10.1123/jpah.2023-0266 (Source: Health Physics)
Source: Health Physics - April 16, 2024 Category: Physics Authors: Nicholas Tahmassi Soham Al Snih Source Type: research
Validation of actigraphy sleep metrics in children aged 8 to 16 years: considerations for device type, placement and algorithms
CONCLUSION: Although the performance of existing count-based sleep algorithms varies markedly, wrist-worn devices provide more accurate measures of most sleep measures compared to other sites. Overall, the HDZCA algorithm showed the greatest accuracy, although the most appropriate algorithm depends on the sleep measure of focus.PMID:38627708 | DOI:10.1186/s12966-024-01590-x (Source: Health Physics)
Source: Health Physics - April 16, 2024 Category: Physics Authors: K A Meredith-Jones J J Haszard A Graham-DeMello A Campbell T Stewart B C Galland A Cox G Kennedy S Duncan R W Taylor Source Type: research
The Role of Physical Literacy in the Association Between Weather and Physical Activity: A Longitudinal Multilevel Analysis With 951 Children
CONCLUSIONS: Despite the varying impact of weather on PA across individuals, the present study favors a main effect model in which weather and PL exert independent effects on children's PA. The insufficient support for PL as a moderating factor calls for future studies to test alternative mechanisms in the weather-PA association.PMID:38626893 | DOI:10.1123/jpah.2022-0596 (Source: Health Physics)
Source: Health Physics - April 16, 2024 Category: Physics Authors: Johannes Carl Paulina S Melby Mette L Kurtzhals Glen Nielsen Peter Bentsen Peter Elsborg Source Type: research
Barriers to Participation in Organized Physical Activity Among LGBTQ+ Youth: Differences by Sexual, Gender, and Racial Identities
CONCLUSIONS: LGBTQ+ youth experience individual and systemic barriers to organized physical activity, including inequitable access and bullying, and barriers are uniquely experienced across sexual, gender, and racial identities. Physical activity promotion among LGBTQ+ youth would be strengthened by policies that address inequitable access to opportunities and bias-based bullying.PMID:38626889 | DOI:10.1123/jpah.2023-0652 (Source: Health Physics)
Source: Health Physics - April 16, 2024 Category: Physics Authors: Benjamin Parchem Jonathan Poquiz Ryan L Rahm-Knigge Elizabeth Panetta Ryan J Watson G Nic Rider Source Type: research
Application of Fiber Loop Ringdown Spectroscopy Technique for a New Approach to Beta-Amyloid Monitoring for Alzheimer Disease's Early Detection
Biomed Phys Eng Express. 2024 Apr 16. doi: 10.1088/2057-1976/ad3f1f. Online ahead of print.ABSTRACTA novel fiber optic biosensor was purposed for a new approach to monitor amyloid beta protein fragment 1-42 (Aβ42) for Alzheimer's Disease (AD) early detection. The sensor was fabricated by etching a part of fiber from single mode fiber loop in pure hydrofluoric acid solution and utilized as a Local Optical Refractometer (LOR) to monitor the change Aβ42 concentration in Artificial Cerebrospinal Fluid (ACSF). The Fiber Loop Ringdown Spectroscopy (FLRDS) technique is an ultra-sensitive measurement technique with low-cost, hig...
Source: Health Physics - April 16, 2024 Category: Physics Authors: Burak Malik Kaya Semih Oz Okan Esent ürk Source Type: research
Influencing Physical Therapist's Self-efficacy for Musculoskeletal Ultrasound Through Blended Learning: A Mixed Methods Study
CONCLUSION: A blended learning approach positively affects participants' self-efficacy for MSK ultrasound; however, future training designs should provide learners with additional support during the transition phase.PMID:38625694 | DOI:10.1097/JTE.0000000000000332 (Source: Health Physics)
Source: Health Physics - April 16, 2024 Category: Physics Authors: Jon A Umlauf Ronald Cervero Yating Teng Alexis Battista Source Type: research
Do We Make a Difference? The Effect of a Doctor of Physical Therapy Program Curriculum on Student Cultural Competence
CONCLUSION: Findings can be leveraged and incorporated into recommendations for curricular revision and program reform targeting cultural competence development among DPT students.PMID:38625695 | DOI:10.1097/JTE.0000000000000339 (Source: Health Physics)
Source: Health Physics - April 16, 2024 Category: Physics Authors: Brianna T Chesser Candace D Bloomquist Debra J Ford Source Type: research
Stability of radiomic features from positron emission tomography images: a phantom study comparing advanced reconstruction algorithms and ordered subset expectation maximization
In this study, we compared the repeatability and reproducibility of radiomic features obtained from positron emission tomography (PET) images according to the reconstruction algorithm used-advanced reconstruction algorithms, such as HYPER iterative (IT), HYPER deep learning reconstruction (DLR), and HYPER deep progressive reconstruction (DPR), or traditional Ordered Subset Expectation Maximization (OSEM)-to understand the potential variations and implications of using advanced reconstruction techniques in PET-based radiomics. We used a heterogeneous phantom with acrylic spherical beads (4- or 8-mm diameter) filled with 18F...
Source: Health Physics - April 16, 2024 Category: Physics Authors: Takuro Shiiba Masanori Watanabe Source Type: research
LGBTQIA+ Cultural Competence in Physical Therapist Education and Practice: A Qualitative Study from the Patients' Perspective
CONCLUSION: An LGBTQIA+ patient's experience is influenced by the provider cultural acceptance, and the resulting power dynamics that impact LGBTQIA+ patients' comfort, trust, and perceptions of care. Enhanced patient experiences were found more prevalent with providers that possessed elevated levels of education or experience with this community, supporting Campinha-Bacote's assumption that there is a direct relationship between level of competence in care and effective and culturally responsive service.IMPACT: Awareness of the underlying issues presented in these themes will assist in the development of effective solutio...
Source: Health Physics - April 16, 2024 Category: Physics Authors: Melissa C Hofmann Nancy F Mulligan Kelly Stevens Karla A Bell Chris Condran Tonya Miller Tiana Klutz Marissa Liddell Carlo Saul Gail Jensen Source Type: research
Consequences of Violating Conditions of Counting Statistics Are Not Severe When Measuring Radon Progeny Concentrations with the Thomas and Kusnetz Methods
Health Phys. 2024 Apr 16. doi: 10.1097/HP.0000000000001817. Online ahead of print.ABSTRACTWhen analyzing samples of radon progeny using the Thomas or Kusnetz methods, we violate one of the conditions of counting statistics because we use counting times that are not short compared with the half-lives of the radionuclides. The result is that we overestimate the uncertainties of the counts if we use counting statistics without correction. In this work, I describe the method by which I adjusted the values of variance of the counts theoretically to values that are more accurate and calculated the amounts by which I overestimate...
Source: Health Physics - April 16, 2024 Category: Physics Authors: Phillip H Jenkins Source Type: research
Unlocking Patient Voices: Advancing Physical Therapist Practice with Discrete Choice Experiments
This article addresses the importance of eliciting patient preferences as part of person-centered care in the value-based space, the challenges faced in preference measurement in physical therapy, and how the discrete choice experiment can alleviate some of those challenges. It also provides examples of the discrete choice experiment in health care and suggests ways in which it can be effectively used in physical therapist practice to improve the delivery of meaningful rehabilitation services to patients. Implementing greater use of the DCE in physical therapy can improve person-centered physical therapist service delivery...
Source: Health Physics - April 16, 2024 Category: Physics Authors: Carla Rauseo M Samuel Cheng Source Type: research
