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Pathology, Diagnostic procedure, Cone beam CT, Musculoskeletal system, Extremities, Bones
A. Vasiliev, E. Egorova, N. Blinov, D. V. Makarova, E. G. Gorlycheva; Moscow/RU
The received CBCT-images of the knee joints were characterized by the detailed mapping of the bone structure with the accurate differentiation and direction of bone trabeculae.
It has become possible to trace its orientation (fig.
5). During the comparative analysis it has been found that visualization of the bone structure on the CBCT-images was comparable or even exceeded MSCT and DMFR with direct multiple images magnification (х3),
but it was not defined on SR.
small bone fragments and areas of pathological alteration of bone tissue (even under 1 mm) were observed reliably on the CBCT-tomograms (fig.
The similar changes were visualized on MSCT,
but were not detected on DMFR and on SR.
The 14 years old patient has been applied to the hospital with the suspected knee joint injury.
To exclude any pathological changes of the bone structure CBCT-examination has been performed.
During processing of the derived images we were managed not only to characterize the articular surfaces and the underlying bone structure,
but to assess the bone growth plates condition also (fig.
When scanning the patients with metal constructions or high density materials,
our attention was attracted also by the lack of significant artifacts from it on CBCT-images as distinct from MSCT (fig.
CBCT-images of the knee joints were distinguished by high spatial resolution,
optimal signal-to-noise ratio,
uniform accuracy and dynamic range grayscale,
which allowed estimating not only of bone structure,
but dense soft tissue formations as well: muscles,
ligaments and tendons (fig.
The obtained information during CBCT-examinations about soft tissues injuries has been confirmed by MRI (n = 12).