CT images

Computed tomography (CT) or computerized axial tomography (CAT) is a medical imaging technique for creating cross-sectional (tomographic) images by exposing a subject to X-rays. Two-dimensional X-ray attenuation images taken from different angles are computationally combined to generate the three-dimensional image, eliminating the superimposition of body structures present in the traditional X-ray images.

Voxel values in a CT image represent the relative radiodensity inside that particular volume of tissue, usually in Hounsfield units (HU).

Using CT images in Turku PET Centre

What are CT images used for?



References

Brix G, Griebel J, Delorme S. Dynamische kontrastverstärkte Computertomographie - Tracerkinetische und strahlenhygienische Grundlagen. Radiologe 2012; 52(3): 277-294.

Christian PE, Waterstram-Rich KM (eds.): Nuclear Medicine and PET/CT - Technology and Techniques, 7th ed., Elsevier, 2012. ISBN; 978-0-323-07192-5.

Ginat DT, Gupta R. Advances in computed tomography imaging technology. Annu Rev Biomed Eng. 2014; 16: 431-453.

Ingrisch M, Sourbron S. Tracer-kinetic modeling of dynamic contrast-enhanced MRI and CT: a primer. J Pharmacokinet Pharmacodyn. 2013; 40(3): 281-300. doi: 10.1007/s10928-013-9315-3.

Maier A, Steidl S, Christlein V, Hornegger J (eds.): Medical Imaging Systems - An Introductory Guide. SpringerOpen, 2018. doi: 10.1007/978-3-319-96520-8.

Trivedi R, Saba L, Suri JS (eds.): 3D Imaging Technologies in Atherosclerosis. Springer, 2015. doi: 10.1007/978-1-4899-7618-5.


X-ray tube


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Created at: 2015-06-11
Updated at: 2018-08-13
Written by: Vesa Oikonen