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    Module

    X-ray/CT Technique

    The basic principles about the X-ray and CT technique.

    X-ray/CT Technique
    Radiology Expert
    Table of contents
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    CT Contrast & Hounsfield Units


    Contrast Agents

    Contrast agents ensure that an organ or blood vessel is depicted more clearly. The contrast agent is injected intravenously (usually via a vein in the crook of the elbow) and will then spread throughout the body via the blood vessels.
    The query for which the CT is being performed is an important point to consider when using intravenous contrast agent. In order to conduct a good examination, the contrast agent needs to reach the organ/vessel of interest.

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    Literature: sources and author

    Text & Illustrations

    Drs. A. van der Plas, MSK radiologist Maastricht UMC+

    With special thanks to:
    Drs. S. Springer, Medical Physicist Assistant Maastricht UMC+

    Sources:

    • M. Prokop; Spiral and Multislice Computed Tomography of the body (2003)
    • A. Lemmens; Praktische radiologie (april 2005)
    • J. Rydberg, et al; Multisection CT: Scanning Techniques and Clinical Applications. RadioGraphics 2000.
    • P. Allisy-Roberts, J. Williams; Farr’s Physics for Medical Imaging (sec. edition 2008)
    • A . Esquival et. al.; Photon-Counting Detector CT: Key Points Radiologists Should Know. Korean J Radiol (2022)
    • K Rajendran, M. Petersilka; First Clinical Photon-counting Detector CT System: Technical Evaluation. Radiology (2022)
    • F. Tatsugami et. al.; Dual-energy CT: minimal essentials for radiologists. Japanese Journal of Radiology (2022)
    • J.R. Grajo, D.V. Sahani; Dual-Energy CT of the Abdomen and Pelvis: Radiation Dose Considerations. Journal of the American College of Radiology (2018)
    • R. Grkovski et. al.; A Novel Dual-Energy CT Method for Detection and Differentiation of Intracerebral Hemorrhage From Contrast Extravasation in Stroke Patients After Endovascular Thrombectomy: Feasibility and First Results. Clin Neuroradiology (2023)

    10/07/2023

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