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Multi-Detector Row CT–Recent Developments, Radiation Dose and Dose Reduction Technologies

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Radiation Dose from Multidetector CT

Part of the book series: Medical Radiology ((Med Radiol Diagn Imaging))

Abstract

Clinical experience with the most recent 64-slice and 128-slice CT-systems indicates that a further increase of the number of detector rows will not automatically translate into improved clinical performance. Consequently, recent CT developments have focused on solving remaining limitations of multi-detector row CT, such as limited potential to dynamically scan entire organs or insufficient temporal resolution for cardiac imaging. We discuss new CT system concepts such as CT-scanners with area detectors large enough to cover entire organs, or dual-source CT-systems with considerably enhanced temporal resolution below 100 ms and fast volume coverage by means of high pitch scanning. Furthermore, we introduce and explain the basic radiation dose parameters in CT and their measurement. We briefly discuss established and new techniques for radiation dose reduction, such as anatomical X-ray tube current modulation, organ-based tube current modulation, ECG-controlled tube current modulation, adaptation of the X-ray tube voltage to the patient's anatomy and the planned examination type, dynamically adjustable pre-patient collimators and iterative reconstruction. 

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Authors and Affiliations

  1. Siemens Healthcare, Forchheim, Germany

    Thomas Flohr

  2. Eberhard Karls University, Tübingen, Germany

    Thomas Flohr

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  1. Thomas Flohr
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Correspondence to Thomas Flohr .

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Editors and Affiliations

  1. , Department of Radiology, Reseau Hospitaller de Medecine Sociale, Baudour, Belgium

    Denis Tack

  2. Massachusetts General Hospital, Department of Radiology, Harvard Medical School, Fruit St. 55, Boston, 02114, Massachusetts, USA

    Mannudeep K. Kalra

  3. Hôspital Erasme, Department of Radiology, Université libre de Bruxelles, Route de Lennik 808, Brussels, 1070, Belgium

    Pierre Alain Gevenois

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Flohr, T. (2012). Multi-Detector Row CT–Recent Developments, Radiation Dose and Dose Reduction Technologies. In: Tack, D., Kalra, M., Gevenois, P. (eds) Radiation Dose from Multidetector CT. Medical Radiology(). Springer, Berlin, Heidelberg. https://doi.org/10.1007/174_2011_499

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  • DOI: https://doi.org/10.1007/174_2011_499

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-24534-3

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