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Inicio Radiología (English Edition) Introduction to iodinated contrasts: Properties, intravenous administration and ...
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Vol. 66. Issue S2.
Suplement “Update and good practice in the contrast media uses”
Pages S3-S14 (October 2024)
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Vol. 66. Issue S2.
Suplement “Update and good practice in the contrast media uses”
Pages S3-S14 (October 2024)
Update and good practice in the contrast media uses
Introduction to iodinated contrasts: Properties, intravenous administration and distribution throughout the body
Introducción a los contrastes yodados: propiedades, administración intravascular y distribución en el organismo
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J. Cobos Alonsoa, C. Fontenla-Martínezb, L. Concepción Aramendíac, J.M. Bernabé Garcíad, J.J. Arenas-Jiméneze,
Corresponding author
j.arenasjimenez@gmail.com

Corresponding author.
a Servicio de Radiodiagnóstico. Hospital Universitario Ramón y Cajal, Madrid, Spain
b Servicio de Radiodiagnóstico. Hospital Universitario y Politécnico La Fe, Valencia, Spain
c Servicio de Radiodiagnóstico. Hospital Universitario Dr. Balmis. Grupo de investigación Imagen Médica Instituto de investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
d Servicio de Radiodiagnóstico, Hospital General Universitario Dr. Balmis de Alicante; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
e Servicio de Radiodiagnóstico, Hospital General Universitario Dr. Balmis de Alicante; Departamento de Patología y Cirugía, Universidad Miguel Hernández; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
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Tables (3)
Table 1. Types of iodinated contrast and its characteristics.
Table 2. Examples of iodinated contrast media commonly used in our setting.
Table 3. Characteristics recommended for contrast media injectors for computed tomography equipment.
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Special issue
This article is part of special issue:
Vol. 66. Issue S2

Suplement “Update and good practice in the contrast media uses”

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Abstract

Iodinated contrast media enable greater attenuation of vascular and visceral structures in radiological studies and are widely used due to their high degree of safety, easy administration, acceptable level of tolerance, wide distribution and rapid excretion, qualities determined by their composition.

Automated power injectors are used to administer contrast media. Once injected, contrast is distributed throughout the body, remaining in the intravascular space during its first passage before reaching the organs and spreading into the extracellular interstitial space, followed by a recirculation phenomenon.

In CT studies, the level of contrast enhancement obtained is determined by multiple factors including patient-related factors, contrast medium characteristics, method of administration, equipment and technique. Different methods are available for determining the scan timing depending on the aim of the exploration.

Keywords:
Contrast media
Pharmacokinetics
Iodine
Computed Tomography
X-Ray
Resumen

Los medios de contraste yodados permiten obtener una mayor atenuación de las estructuras vasculares y viscerales en los estudios radiológicos y son ampliamente utilizados por su buen perfil de seguridad, fácil administración, aceptable tolerancia, amplia distribución y rápida excreción que vienen determinadas por su composición.

La administración de los medios de contraste se realiza mediante bombas automáticas. Una vez inyectados, se distribuyen en el organismo, en un primer paso intravascular, para posteriormente alcanzar los órganos y difundir al espacio intersticial extracelular, acompañado de un fenómeno de recirculación.

En un estudio de TC, la atenuación obtenida con un medio de contraste vendrá determinada por múltiples factores que dependen del paciente, características del medio de contraste, su forma de administración, del equipo y técnica empleados para el estudio. Existen diferentes métodos para determinar el retraso con el que se inicia la adquisición, que dependerá del objetivo de la exploración.

Palabras clave:
Medio de contraste
Farmacocinética
Yodo
Tomografía computarizada
Rayos X

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