¿Es eficiente la protección anti-radiación otorgada por gorros de pabellón de tungsteno-bismuto en cardiología intervencionista?

Ramos-Avasola, Sergio; Díaz, Natalia; R, Roldan; Gamarra, Jorge; Catalán, Mónica

doi:10.4067/s0034-98872016000700003

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…When the attenuation value reported by the face mask is compared with the studies that evaluated the caps that used a lead equivalence level < 0.125, by Alazzoni et al 27 and Ramos-Avasola et al 28 , they reported an attenuation 65.8% and 40.2%, respectively; it can be seen that they are values similar to the 52% attenuation reported in the present investigation. The attenuation value of 52% achieved by the face mask may seem insufficient, but in Figure 1 it can be seen that the combined use of the face mask with the leaded acrylic suspended from the ceiling achieves an attenuation close to 100%, which shows how important it is to regularly use the acrylic screen in combination with the other radioprotective elements.…”

Section: Discussionsupporting

confidence: 83%

Anti-radiation efficacy of face mask in interventional cardiology: a phantom study

Prieto-López,

Ramos-Avasola,

Andrade

et al. 2024

RCHRADE

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Background:The effectiveness of radiation-attenuating lead-acrylic face masks used in interventional cardiology has been hardly studied. Objective: Determine the effectiveness of the lead-acrylic facial mask in a simulated environment. Methods: An experimental study was carried out that compared the doses of secondary ionizing radiation received by a mannequin, which emulated the interventional cardiologist, on the surface of the left eye orbit, the mouth, and the surface of the left temporoparietal lobe. Dosimeters were used, arranged in front and behind the radiation-attenuating lead-acrylic facial mask. The projections were 50° LAO and 60°/40° LAO. The voltage was 73.8 ± 24.7 kV, the current was 582 ± 145 mA, and the dose-area product was 50.4 ± 37.9 Gy/m 2 . Results: The median radiation doses with and without the mask were 0.21 mSv (0.00-0.83) and 0.43 mSv (0.37-0.64), respectively, corresponding to a radiation attenuation of 52%, and when the mask was complemented with the leaded acrylic shield suspended from the ceiling the radiation levels were undetectable. Conclusions: The radiation-attenuating lead-acrylic face mask provides moderate attenuation that, complemented by the acrylic shield, achieves optimal attenuation.

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Section: Discussionsupporting

confidence: 83%

Anti-radiation efficacy of face mask in interventional cardiology: a phantom study

Prieto-López,

Ramos-Avasola,

Andrade

et al. 2024

RCHRADE

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“…Cuando se compara el valor de atenuación reportado por la máscara facial con los estudios que evaluaron los gorros que utilizaron un nivel de equivalencia con el plomo < 0,125, de Alazzoni et al 27 y Ramos-Avasola et al 28 , estos reportaron una atenuación del 65,8% y el 40,2%, respectivamente; se puede apreciar que son valores similares al 52% de atenuación reportado en la presente investigación. El valor de atenuación de un 52% logrado por la máscara facial quizás parezca insuficiente, pero en la figura 1 se puede apreciar que el uso combinado de la máscara facial con el acrílico plomado suspendido de techo logra una atenuación cercana al 100%, lo que pone de manifiesto lo importante que es el uso habitual de la pantalla acrílica en combinación con los demás elementos radioprotectores.…”

Section: Discussionunclassified

Eficacia antirradiación de la máscara facial en cardiología intervencionista: un estudio con fantomas

Prieto-López,

Ramos-Avasola,

Andrade

et al. 2024

RCHRAD

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La eficacia de las máscaras faciales plomo-acrílicas atenuadoras de radiación utilizadas en cardiología intervencionista ha sido poco estudiada. Objetivo: Determinar la eficacia de la máscara facial plomo-acrílica en un contexto simulado. Método: Se realizó un estudio experimental que comparó las dosis de radiación ionizante secundaria recibida por un maniquí, que emuló al cardiólogo intervencionista, en la superficie de la órbita del ojo izquierdo, la boca y la superficie del lóbulo temporoparietal izquierdo. Se utilizaron dosímetros, dispuestos frontal y posterior a la máscara facial plomo-acrílica atenuadora de radiación. Las proyecciones fueron de 50° LAO y 60°/40° LAO. El voltaje fue de 73,8 ± 24,7 kV, la corriente de 582 ± 145 mA y el producto dosis-área de 50,4 ± 37,9 Gy/m 2 . Resultados: Las medianas de las dosis de radiación con y sin la máscara fueron 0,21 mSv (0,00-0,83) y 0,43 mSv (0,37-0,64), respectivamente, lo que corresponde a una atenuación de la radiación del 52%, y cuando la máscara se complementó con el escudo acrílico plomado suspendido del techo los niveles de radiación fueron indetectables. Conclusiones: La máscara facial plomo-acrílica atenuadora de radiación proporciona una atenuación moderada que, complementada con el escudo acrílico, consigue una atenuación óptima.

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“…The bell cap, since it covers a larger area of the head, was the one that conferred the highest radioprotection, with an attenuation greater than 99%. This is probably explained by the fact that devices such as the bell cap and the lead face mask place a surface of attenuating material against the oblique radiation beams emerge from the interaction of the x-rays with the patient [28,34,41]. However, we must be careful in interpreting these results because the three studies 13,30,37 that evaluated them, combined the factors that showed the greatest attenuation and/or effectiveness of RAD found in this review, such as: a Pb equivalence of 0.5 mm, manufactured with Pb, and the dosimeters were placed inside and outside the cap, at the level of the head surface Therefore, the only way to know which of the factors mentioned above is the one that contributes more to radioprotection would be to perform a statistical analysis with metaregression models that would provide us with the induced contribution of the factors acting together, therefore this calculation reflects more faithfully the underlying truth of this phenomenon.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of radiation attenuating caps in reducing radiation doses received at the cerebral level in interventional physicians: a systematic review

Ramos-Avasola,

Ponce,

Leon

et al. 2024

J. Radiol. Prot.

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Background. Anecdotal reports are appearing in the scientific literature about cases of brain tumors in interventional physicians who are exposed to ionizing radiation. In response to this alarm, several designs of leaded caps have been made commercially available. However, the results reported on their efficacy are discordant. Objective. To synthesise, by means of a systematic review of the literature, the capacity of decreasing radiation levels conferred by radiation attenuating devices (RAD) at the cerebral level of interventional physicians. Methodology. A systematic review were performed including the following databases: MEDLINE, SCOPUS, EBSCO, Science Direct, Cochrane Controlled Trials Register (CENTRAL), WOS, WHO International Clinical Trials Register, Scielo and Google Scholar, considering original studies that evaluated the efficacy of RAD in experimental or clinical contexts from January 1990 to May 2022. Data selection and extraction were performed in triplicate, with a fourth author resolving discrepancies. Results. Twenty articles were included in the review from a total of 373 studies initially selected from the databases. From these, twelve studies were performed under clinical conditions encompassing 3801 fluoroscopically guided procedures, ten studies were performed under experimental conditions with phantoms, with a total of 88 procedures, four studies were performed using numerical calculations with a total of 63 procedures. The attenuation and effectiveness of provided by the caps analysed in the present review varying from 12.3% to 99.9%, y 4.9% to 91% respectively. Conclusion: RAD were found to potentially provide radiation protection, but a high heterogeneity in the shielding afforded was found. This indicates the need for local assessment of cap efficiency according to the practice.

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¿Es eficiente la protección anti-radiación otorgada por gorros de pabellón de tungsteno-bismuto en cardiología intervencionista?

Abstract: (Rev Med Chile 2016; 144: 837-843)

Cited by 4 publications

References 14 publications

Anti-radiation efficacy of face mask in interventional cardiology: a phantom study

Anti-radiation efficacy of face mask in interventional cardiology: a phantom study

Eficacia antirradiación de la máscara facial en cardiología intervencionista: un estudio con fantomas

Efficacy of radiation attenuating caps in reducing radiation doses received at the cerebral level in interventional physicians: a systematic review

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