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Vol. 64. Issue S1.
Breast radiology: New horizons in times of pandemics
Pages 11-19 (March 2022)
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Vol. 64. Issue S1.
Breast radiology: New horizons in times of pandemics
Pages 11-19 (March 2022)
Original articles
Mean glandular dose in the mammary gland and dose of radiation in the thyroid gland and lens in women with and without breast implants during different modalities of mammography
Dosis glandular promedio en glándula mamaria y dosis de radiación en glándula tiroides y cristalino en mujeres con y sin implantes mamarios durante diferentes modalidades mamográficas
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J.A. Pérez Fuentesa,
Corresponding author
perezfuentesjorge@gmail.com

Corresponding author.
, V.S. Roldán Sánchezb, A.K. Gordillo Ledesmaa, A.F. Menaa, S. Britoa, C. Soteldob
a Centro Clínico de Estereotaxia – CECLINES, Caracas, Venezuela
b Instituto Venezolano de Investigaciones Científicas, Edo, Miranda, Venezuela
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Tables (4)
Table 1. Analysis of variation in the mean glandular dose values in relation to the technical parameters used in each of the mammographic projections by study group (group 1 to 4).
Table 2. Characterisation of the population.
Table 3. Comparison of mean glandular dose (MGD) between groups with the same number of projections, but with different modality of mammography, and comparison of MGD between groups with a different number of projections, but with the same modality of mammography.
Table 4. Dose values recorded in the lens and thyroid gland in each group studied.
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Special issue
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Vol. 64. Issue S1

Breast radiology: New horizons in times of pandemics

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Abstract

There have always been concerns about the secondary effects of diagnostic methods that use ionizing radiation. During mammography, the parameters to be concerned about are the mean glandular dose and the scatter dose. We evaluated the dose of radiation to the breast, thyroid gland, and lens in digital mammography in women with and without implants, in tomosynthesis in women with and without implants, and in contrast-enhanced mammography.

Materials and methods

The study included 212 women with and without disease who were attended at the Centro Clínico de Estereotaxia, CECLINES, in Caracas, Venezuela, between June 2017 and August 2017; the women were classified into five groups according to the mammographic modality used to evaluate them and whether or not they had implants. The statistical analysis included descriptive statistics for the study population. We used the Mann-Whitney U to compare the mean glandular dose and dose in the thyroid gland and lens between groups.

Results

The mean glandular dose and the dose of radiation received in the thyroid and lens were within the acceptable range. In a few exceptions, the mean glandular dose per view was slightly higher than 3 mGy. The scatter dose to the thyroid gland and the lens during mammography has a very small contribution to the annual dose equivalent.

Conclusion

The mean glandular dose and the scatter dose to the thyroid gland and lens delivered during tomosynthesis and 2D mammography in women with implants were higher than those delivered during other mammographic techniques in women without implants.

Keywords:
Radiation dose
Thyroid
Lens
Mean glandular dose
Mammography
Breast implant
Resumen

Siempre ha existido preocupación por los efectos secundarios de métodos diagnósticos que utilizan radiaciones ionizantes. Durante una mamografía preocupa la dosis glandular promedio y la dosis de radiación dispersa. Evaluamos la dosis de radiación a la mama, glándula tiroides y cristalino con mamografía digital sin y con implante, tomosíntesis sin y con implante y mamografía con contraste.

Materiales y métodos

El estudio incluyó 212 mujeres sanas y con patología que fueron divididas en 5 grupos dependiendo de la modalidad mamográfica y de la presencia o no de implantes. Acudieron al Centro Clínico de Estereotaxia, CECLINES, en Caracas, Venezuela, entre junio y agosto de 2017. El análisis estadístico contempla una descripción de la población en estudio. Se comparó la dosis glandular promedio y la dosis en glándula tiroides y cristalino entre los grupos, utilizando el estadístico U de Mann Whitney.

Resultados

La dosis glandular promedio y la dosis de radiación recibida en la glándula tiroides y el cristalino están dentro de los valores aceptables. En pocas excepciones, la dosis glandular promedio por proyección estaba discretamente por encima de los 3 mGy. La radiación dispersa a glándula tiroides y cristalino durante una mamografía tiene una contribución muy pequeña a la dosis anual equivalente.

Conclusión

Las pacientes con implante (tomosíntesis y mamografía 2D) tuvieron la mayor mediana de dosis glandular promedio y dosis a glándula tiroides y cristalino mayor que las modalidades mamográficas sin implantes.

Palabras clave:
Dosis de radiación
Tiroides
Cristalino
Dosis glandular promedio
Mamografía
Prótesis mamaria

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