Cone beam Computed Tomography (CBCT) has been widely adopted for dental 3D-imaging since the late 1990s .
Compared with multi-detector computed tomography (MDCT) imaging,
CBCT offers higher resolution with a relatively low radiation dose.
Besides use in dental and ORL applications on the first commercially available CBCT systems,modern CBCT units afford examinations in seated or lying position,
therefore permitting high resolution CBCT imaging of other body parts,
such as the wrist,
foot or ankle [2,3].
MDCT is a well established imaging modality to...
Methods and Materials
Forty-one patients were sent to our department for CBCT-arthrography of the wrist.
the patient is seating near the X-ray table,
with the dorsal aspect of the wrist prepared sterilely and positioned horizontally upon the table.
Under fluoroscopic guidance,
puncture of the radiocarpal joint was performed on the waist of the radius and 4 ml of iodinated contrast agent was injected.
Local anaesthetic was not used.
Plain radiographs were performed and immediately afterwards,
a CBCT examination was realized using a NewTom 5G CBCT scanner (QR...
Back projection calculation algorithms allow a volume dataset to be created that describes the examined region with an isotropic CT data set,
with a resolution of 0.125 x 0.125 x 0.125 mm.
high resolution images were achieved (Fig.1,3,4).
The CBCT examination was performed with a mean dose CTDIvol of 2.98 mGy (range 2.28 - 4.08) (Fig.1,3,4),
whereas the mean dose (CTDIvol) of MDCT-arthrography (GE Brightspeed system with 120 kV at 100 mA,
0.625 mm thickness,
0,3 mm interval,
pitch 0.5; as performed before the...
CBCT-arthrography is a high resolution imaging modality,
readily available and highly effective in detecting ligamentous pathology of the wrist.
The achieved radiation dose reduction is approximately 90 % as compared with CT-arthography performed on MDCT,
and may e.g.
eventually open perspectives for dynamic CT-arthrographic examinations without excessive radiation dose intheappraisalof wrist instability .
De Vos W,
Cone-beam computerized tomography (CBCT) imaging of the oral and maxillofacial region: a systematic review of the literature.
Int J Oral Maxillofac Surg 2009;38:609-625
De Cock J,
Van Petegem S,
Cone-beam computed tomography: a new low dose,
high resolution imaging technique of the wrist,
presentation of three cases with technique. Skeletal Radiol 2012;41:93-96
Le Minor JM,
Mac Mahon P,