Results 21 to 30 of about 1,131,173 (281)

Senescence in vitro and ionising radiations—the human diploid fibroblast model [PDF]

open access: yes, 1981
The influence of ionising radiations on ageing is still controversial. Since Hayflick established the concept that diploid cells have finite lifespan in vitro, human diploid fibroblast (HDF) cultures have been recognised as a potent experimental model ...
Cremer, Thomas, Stevenson, A. F. G.
core   +1 more source

Utilisation of 3D Printing in the Manufacturing of an Anthropomorphic Paediatric Head Phantom for the Optimisation of Scanning Parameters in CT

open access: yesDiagnostics, 2023
Computed tomography (CT) is a diagnostic imaging process that uses ionising radiation to obtain information about the interior anatomic structure of the human body.
Merim Jusufbegović   +8 more
doaj   +1 more source

Why consider contrast-enhanced ultrasound (ce-US) in children?

open access: yesJournal of Ultrasonography, 2014
Children are very specific; particularly in terms of radiation sensitivity. They not only have a tenfold higher sensitivity towards radiation, but also a longer expected lifespan where potentially radiation induced tumours may manifest(1–7 ...
Michael Riccabona
doaj   +1 more source

Técnicas de imagen para la reducción de radiación ionizante

open access: yesRevista Colombiana de Cardiología, 2020
Resumen: El uso de radiación ionizante en intervencionismo ha tenido un aumento exponencial en los últimos años. Es así como ha generado diagnósticos más precisos y la posibilidad de llevar a cabo intervenciones mínimamente invasivas, pero todo esto a ...
Bivian Yaira Muñoz Paniagua   +1 more
doaj   +1 more source

The impact of high and low dose ionising radiation on the central nervous system

open access: yesRedox Biology, 2016
Responses of the central nervous system (CNS) to stressors and injuries, such as ionising radiation, are modulated by the concomitant responses of the brains innate immune effector cells, microglia.
Calina Betlazar   +3 more
doaj   +1 more source

Efectos biológicos de las radiaciones ionizantes

open access: yesRevista Colombiana de Cardiología, 2020
Resumen: Los seres vivos han interactuado desde el inicio de su evolución con las radiaciones ionizantes, las no ionizantes y los agentes químicos provenientes de fuentes naturales.
J. Anselmo Puerta-Ortiz   +1 more
doaj   +1 more source

Medical students’ awareness of radiation exposure related to radiological imaging procedures

open access: yesJournal of Medical Science, 2014
Introduction. Current advancements in fields of medical sciences resulted in an increase of imaging examinations with a use of ionising radiation. Such increase leads to justified concerns about its possible consequences. Aim. Assessment of awareness and
Katarzyna Jończyk-Potoczna   +3 more
doaj   +1 more source

Elementos de protección radiológica en salas de intervencionismo

open access: yesRevista Colombiana de Cardiología, 2020
Resumen: El número y la complejidad de los procedimientos de diagnóstico e intervencionismo cardiovascular se han incrementado de manera significativa, hecho que genera mayor exposición a dosis bajas de radiación ionizante debido a la radiación dispersa ...
Jairo Fernando Poveda B.   +1 more
doaj   +1 more source

Ionisation and Radiation [PDF]

open access: yesNature, 1919
WHEN X-rays pass through a gas, only a very small fraction of the molecules—in favourable circumstances, one in a billion—is ionised by them, and the extent of this ionisation is unaffected by temperature. Writers on radiation seem to have difficulty in reconciling this with the wave theory of light. I venture to suggest that the difficulty arises from
openaire   +1 more source

Lesiones oculares y radiación ionizante

open access: yesRevista Colombiana de Cardiología, 2020
Resumen: El número y la complejidad de los procedimientos de diagnóstico e intervencionismo cardiovascular han incrementado de manera significativa, hecho que genera mayor exposición a dosis bajas de radiación ionizante debido a la radiación dispersa por
César Hernández   +2 more
doaj   +1 more source

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