Aims and objectives
Despite the cone-beam computed tomography (CBCT) is a very prospective method of diagnostics in traumatology and orthopaedics,
there were found a few publications concerning on application of it in clinical practice [1,
2,
3,
4].
There is no complete data about physicotechnical conditions,
scanning modes and normal CBCT-anatomy in the accessible sources.
In the framework of our study it was elaborated for unification of CBCT-examinations.
Methods and materials
CBCT was carried out to 18 persons with suspected pathological changes of bone structure (7 men and 11 women at the age from 19 to 45 years) on NewTom 5G (QR S.l.r.,
Italy).
CBCT of wrist was conducted to 6 patients (33 %),
ofhand – to 4 patients (22 %),
of foot – to 5 patients (28 %) andof ankle – to 3 patients (17 %).
Moreover,
the photos of zones of interest were taken with a digital camera.
Results
The physicotechnical conditions for scanning of distal extremities were worked up taking into consideration the minimization of an equivalent dose (Fig.
1).
All the CBCT-examinations were completed with the preliminary selection of the most comfortable patient's extremity positioning with an application of special x-ray negative positioning trays.
The examinations of hand and wrist were made while a patient was in sitting position behind the gantry using the special positioning trays.
The wrist was in the middle physiologic position.
The forearm and the wrist were adjacent...
Conclusion
The physicotechnical conditions and positionings for scanning of distal extremities allow to receive the images of high quality.CBCT permits a detailed study of distalextremities normal anatomy,
to definethe structureof bones and soft tissues,
to determine the direction of the bone beams,
toestimate the spaces between them,
to observe the cortical plates and the medullary canals of the segments with so difficult anatomical structure: wrist,
hand,
ankle,
foot.
Personal information
Aleksandr Vasilyev,
MD,
Professor,
Chief of Department of Radiology,
Moscow State University of Medicine and Dentistry named after A.I.
Evdokimov,President of Moscow Association of Radiology,
Russia,
Moscow
[email protected]
Nikolay Blinov,Professor,Department of Radiology,
Moscow State University of Medicine and Dentistry named after A.I.
Evdokimov,Russia,
Moscow
[email protected]
Elena Egorova,
Professor,Department of Radiology,
Moscow State University of Medicine and Dentistry named after A.I.
Evdokimov,Russia,
Moscow
[email protected]
Darya Makarova,
assistant,Department of Radiology,
Moscow State University of Medicine and Dentistry named after A.I.
Evdokimov,Russia,
Moscow
[email protected]
Elena Gorlycheva,
resident,Department of...
References
De Cock J.,
Mermuys K.,
Goubau J.,
Van Petegem S.,
Houthoofd B.,
Casselman J. W. Cone-beam computed tomography: a new low dose,
high resolution imaging technique of the wrist,
presentation of three cases with technique.
// Skeletal Radiol.
2012.
V.
41.
P.
93 - 96.
Koskinen S.K.,
Haapamäki V.V.,
Salo J.,
Lindfors N.C.,
Kortesniemi M.,
Seppälä L.,
Mattila K.T.CT arthrography of the wrist using a novel,
mobile,
dedicatedextremitycone-beam CT (CBCT).
// Skeletal Radiol.
2013.
V.
42.
№ 5.
P.
649 - 57.
Ramdhian-Wihlm R.,
Le...