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Principles of CT and MR imaging

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Abstract

The formation of CT images involves measurement of the X-ray transmission profile through a patient over a large number of views. Each profile is acquired by means of a fan-shaped X-ray beam that penetrates the body. The X-rays exiting the scanned patient’s body are recorded by a detector arc, generally consisting of 800–1000 detector elements, referred to as a detector row. Each projection of detector’s record (transmission profile) is a view at one position (angle) of the X-ray source. Multiple angular profiles are collected during one complete rotation of the X-ray tube around the patient, which are used to reconstruct the CT image (basically a square matrix of voxel) of the internal organs and tissues for each complete rotation of the X-ray source.

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Authors and Affiliations

  1. Department of Medical Physics, Institute for Cancer research and Treatment, Candiolo, Turin, Italy

    Christian Bracco & Michele Stasi

  2. Department of Surgical Sciences, University Hospital “Città della Salute e della Scienza”, University of Turin, Turin, Italy

    Daniele Regge

  3. Department of Radiology, Institute for Cancer Research and Treatment, Candiolo, Turin, Italy

    Daniele Regge

  4. Diagnostic and Interventional Radiology, Department of Translational Research and Advanced Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy

    Michela Gabelloni & Emanuele Neri

Authors
  1. Christian Bracco
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  2. Daniele Regge
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  3. Michele Stasi
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  4. Michela Gabelloni
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  5. Emanuele Neri
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Corresponding author

Correspondence to Emanuele Neri .

Editor information

Editors and Affiliations

  1. Regional Center of Nuclear Medicine, Department of Translational Research and Advanced Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy

    Duccio Volterrani

  2. Regional Center of Nuclear Medicine, Department of Translational Research and Advanced Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy

    Paola Anna Erba

  3. Hosp. Sant Pau, Nuclear Medicine Department, Autonomous University of Barcelona, Barcelona, Spain

    Ignasi Carrió

  4. Molecular Imaging and Therapy Department, Cornell University Weill, New York, NY, USA

    H. William Strauss

  5. Regional Center of Nuclear Medicine, Department of Translational Research and Advanced Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy

    Giuliano Mariani

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Bracco, C., Regge, D., Stasi, M., Gabelloni, M., Neri, E. (2019). Principles of CT and MR imaging. In: Volterrani, D., Erba, P.A., Carrió, I., Strauss, H.W., Mariani, G. (eds) Nuclear Medicine Textbook. Springer, Cham. https://doi.org/10.1007/978-3-319-95564-3_8

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  • DOI: https://doi.org/10.1007/978-3-319-95564-3_8

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-95563-6

  • Online ISBN: 978-3-319-95564-3

  • eBook Packages: MedicineMedicine (R0)

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