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Inicio Radiología (English Edition) Optimising the use of iodinated contrast agents in CT scans: Vascular, visceral,...
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Vol. 66. Issue S2.
Suplement “Update and good practice in the contrast media uses”
Pages S15-S28 (October 2024)
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Vol. 66. Issue S2.
Suplement “Update and good practice in the contrast media uses”
Pages S15-S28 (October 2024)
Update and best practices in the use of contrast media
Optimising the use of iodinated contrast agents in CT scans: Vascular, visceral, multiphasic and split-bolus examinations
Optimización del uso del contraste yodado en las exploraciones de TC: estudios vasculares, viscerales, multifásicos e inyección bifásica
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J.J. Arenas-Jiméneza,
Corresponding author
j.arenasjimenez@gmail.com

Corresponding author.
, J.M. Bernabé Garcíab, G. Fernández Suárezc, J. Calvo Blancoc
a Servicio de Radiodiagnóstico, Hospital General Universitario Dr. Balmis; Departamento de Patología y Cirugía, Universidad Miguel Hernández; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
b Servicio de Radiodiagnóstico, Hospital General Universitario Dr. Balmis; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain
c Servicio de Radiodiagnóstico, Hospital Universitario Central de Asturias, Oviedo, Spain
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Tables (4)
Table 1. Example of adaptation of a standard CT pulmonary angiogram protocol to one for reducing contrast dose in a 16 detector-row scanner.
Table 2. Summary of parameters that influence visceral enhancement.
Table 3. Characteristics and uses of different phases in contrast-enhanced CT.
Table 4. Proposed split-bolus contrast injection protocols.
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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 is administered when carrying out computed tomography (CT) scans to define anatomical structures and detect pathologies. The contrast is administered according to different protocols which vary significantly and include vascular, visceral, multiphasic and split-bolus injection studies. Each protocol has its own indications and particularities to optimise the use of the contrast medium in each situation. There are numerous factors that influence the degree of contrast enhancement obtained, including the patient’s weight, cardiac output, study delay, the technical characteristics used for acquisition—mainly kilovoltage—, and variables related to the administration and dosage of the contrast medium, such as iodine delivery rate and load. This article will discuss how each of these variables affects the level of enhancement achieved and the parameters that can be modified in order to optimise the results of the different types of scans performed with iodinated contrast.

Keywords:
Contrast media
Iodine
Administration and dosage
Computed tomography
X-ray
Resumen

La administración de contraste yodado en una tomografía computarizada (TC) persigue delimitar estructuras anatómicas y detectar patología. Los protocolos de administración del contraste en las exploraciones de TC son muy variables e incluyen principalmente estudios vasculares, viscerales, multifásicos y con técnica de inyección bifásica, cada uno de ellos con unas indicaciones y particularidades que se deben conocer para optimizar el empleo del medio de contraste en cada situación. Existen numerosos factores que influyen en el grado de realce que se obtiene, entre los que se incluyen el peso del paciente, el gasto cardiaco, el retraso del estudio, las características técnicas empleadas para la adquisición, principalmente el kilovoltaje, y variables relacionadas con la administración y dosificación del medio de contraste, como el flujo y la carga de yodo. En este artículo se discutirá cómo afecta cada uno de ellos al realce obtenido y los parámetros que se pueden modificar para optimizar el resultado de los diferentes tipos de exploraciones realizadas con contraste.

Palabras clave:
Medio de contraste
Yodo
Administración y dosificación
Tomografía computarizada
Rayos X

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