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Related Experiment Videos

Quantitative evaluation of the canine brain using computed tomography

J R Fike, C E Cann, W H Berninger

    Journal of Computer Assisted Tomography
    |April 1, 1982
    PubMed
    Summary

    Quantitative computed tomography (CT) methods precisely evaluate the canine brain. These techniques accurately measure normal canine brain tissue density and blood flow, aiding in assessing treatment effects.

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    Area of Science:

    • Veterinary Radiology
    • Neuroimaging
    • Comparative Neurology

    Background:

    • Quantitative computed tomography (CT) is crucial for evaluating brain structure and function.
    • Assessing canine brain physiology requires precise and reproducible imaging methods.
    • Previous studies lacked comprehensive quantitative analysis of the normal canine brain.

    Purpose of the Study:

    • To develop and validate quantitative computed tomography (CT) methods for the normal canine brain.
    • To determine the precision and variability of densitometry and dynamic CT parameters in Beagles.
    • To establish a baseline for evaluating treatment-induced changes in the canine brain.

    Main Methods:

    • Utilized computed tomography (CT) on 10 adult Beagle dogs across 16 studies.

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  • Quantitatively evaluated normal brain tissue CT numbers, contrast enhancement, blood flow, and blood volume.
  • Assessed intra- and inter-animal variability for densitometry and dynamic CT measurements over 9 months.

    • Main Results:

    • High precision was achieved for densitometry measurements, both within and between animals.
    • Densitometry showed low intra- and inter-animal variability over a 9-month period.
    • Dynamic CT measurements exhibited higher variability between studies, but hemispheric comparisons demonstrated high precision.

    Conclusions:

    • Developed precise quantitative CT methods for evaluating the canine brain.
    • Established reliable densitometry parameters for the normal canine brain.
    • These validated methods are suitable for assessing morphologic and physiologic changes after cytotoxic treatments.