Photoelectron-photoabsorption (PePa) database

Śmiałek, Małgorzata A.; Mason, Nigel J.

doi:10.1140/epjd/e2016-60651-6

Cited by 3 publications

(3 citation statements)

References 14 publications

(14 reference statements)

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“…Participants' biological sex and age in months and years with height, mass, and body mass index (BMI) were used to calculate their respective percentiles based on World Health Organization standards. 28 Ultrasound images were processed using ImageJ software (v1.52k, National Institutes of Health, Bethesda, MA). Both the thickest and thinnest portions of the tendon were measured to determine the degree of tendon thickening (thickestthinnest, mm; Figure 2A).…”

Section: Data Processingmentioning

confidence: 99%

Youth Athletes With Sever's Disease Exhibit Altered Achilles Tendon Ultrasound Characteristics

Hanlon,

Whitney,

DeJong Lempke

2024

J of Ultrasound Medicine

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ObjectivesCalcaneal apophysitis (Sever's disease) is an overuse condition caused by repetitive traction stress to the calcaneal apophysis. Whether Achilles tendon morphology is altered in this young patient population remains unknown. Therefore, we aimed to identify differences in Achilles tendon morphology between youth athletes diagnosed with calcaneal apophysitis and healthy controls.MethodsThis retrospective chart review included 46 patients (n = 23 Sever's disease, 15F/8M, 12.4 ± 2.3 years old) and (n = 23 healthy controls, 13F/10M, 15.9 ± 1.5 years old) who sought care in a Children's Hospital Sports Medicine/Orthopedics Department between 2012 and 2022. We measured ultrasound‐derived degree of tendon thickening, Achilles tendon thickness (cm), and cross‐sectional area (CSA [cm2]). Separate multivariate analyses of covariance (MANCOVAs) were used to compare degree of thickening, mass‐normalized Achilles tendon thickness, and CSA between participant groups, covarying for age. Cohen's d effect sizes were used to assess the magnitude of mean differences and standard error (MDSE) between groups.ResultsYoung athletes with Sever's disease had a significantly greater degree of tendon thickening with a large effect compared with healthy controls (MDSE: 0.07 [0.01] mm P < .001, d = 1.39). Achilles tendon thickness and CSA did not statistically differ between groups; however, the magnitude of between‐group differences for these measures (MDSE: 0.18 [0.05] cm, MDSE: 0.27 [0.07] cm2, respectively) were moderate.ConclusionsOur findings demonstrate previously unrecognized differences in Achilles tendon morphology between young athletes with clinically diagnosed Sever's disease and healthy controls. Our study supports incorporating diagnostic ultrasound as part of a comprehensive examination to ensure appropriate diagnosis and clinical management for adolescents with heel pain.

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Section: Data Processingmentioning

confidence: 99%

Youth Athletes With Sever's Disease Exhibit Altered Achilles Tendon Ultrasound Characteristics

Hanlon,

Whitney,

DeJong Lempke

2024

J of Ultrasound Medicine

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“…A frequently used model system to study DNA SSBs and DSBs is plasmid DNA, which consists of several thousand base pairs. Plasmid DNA can be deposited on a surface, transported into high vacuum and exposed to radiation, which is then systematically varied to determine effective and absolute cross‐sections for strand breaks and to study the effect of radiosensitizers such as cisplatin on the strand breakage . The first study demonstrating electron‐induced DNA strand breaks in the energy range of 3–20 eV was published by Boudaïffa et al., who used plasmid DNA adsorbed on a Ta substrate .…”

Section: Experimental Challengesmentioning

confidence: 99%

The Physico‐Chemical Basis of DNA Radiosensitization: Implications for Cancer Radiation Therapy

Schürmann

Vogel

Ebel

et al. 2018

Chemistry A European J

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High-energy radiation is used in combination with radiosensitizing therapeutics to treat cancer. The most common radiosensitizers are halogenated nucleosides and cisplatin derivatives, and recently also metal nanoparticles have been suggested as potential radiosensitizing agents. The radiosensitizing action of these compounds can at least partly be ascribed to an enhanced reactivity towards secondary low-energy electrons generated along the radiation track of the high-energy primary radiation, or to an additional emission of secondary reactive electrons close to the tumor tissue. This is referred to as physico-chemical radiosensitization. In this Concept article we present current experimental methods used to study fundamental processes of physico-chemical radiosensitization and discuss the most relevant classes of radiosensitizers. Open questions in the current discussions are identified and future directions outlined, which can lead to optimized treatment protocols or even novel therapeutic concepts.

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“…Investigating the role of vibrational excitation in simulating charged-particle tracks in liquid pyrimidine was presented by Brunger et al [4] as part of a significant effort to understand radiation damage in biological matter. Smialek and Mason [5] have presented a photoelectron-photoabsorption database and photoelectron and threshold photoelectron valence spectra of pyridine [6]. Barboza and Bettega [7] have reported elastic cross sections for low energy electron collisions with the cyclic ether tetrahydropyran.…”

Section: New Scientific Insightsmentioning

confidence: 99%

Advances in positron and electron scattering*

et al. 2016

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Abstract. The topical issue on Advances in Positron and Electron Scattering" combines contributions from POSMOL 2015 together with others devoted to celebrate the unprecedented scientific careers of our loyal colleagues and trusted friends Steve Buckman (Australian National University, Australia) and Michael Allan (University of Fribourg, Switzerland) on the occasion of their retirements. POSMOL 2015, the XVIII International Workshop on Low-Energy Positron and Positronium Physics and the XIX International Symposium on Electron-Molecule Collisions and Swarms, was held at Universidade NOVA de Lisboa, Lisboa, Portugal, from 17-20 July 2015. The international workshop and symposium allowed to achieve a very privileged forum of sharing and developing our scientific expertise on current aspects of positron, positronium and antiproton interactions with electrons, atoms, molecules and solid surfaces, and related topics, as well as electron interactions with molecules in both gaseous and condensed phases. Particular topics include studies of electron interactions with biomolecules, electron induced surface chemistry and the study of plasma processes. Recent developments in the study of swarms are also fully addressed.

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Photoelectron-photoabsorption (PePa) database

Cited by 3 publications

References 14 publications

Youth Athletes With Sever's Disease Exhibit Altered Achilles Tendon Ultrasound Characteristics

Youth Athletes With Sever's Disease Exhibit Altered Achilles Tendon Ultrasound Characteristics

The Physico‐Chemical Basis of DNA Radiosensitization: Implications for Cancer Radiation Therapy

Advances in positron and electron scattering*

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