Τίτλος:
Comparison of spatial and contrast resolution for cone-beam computed tomography scanners
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Objective: The purpose was to evaluate the perceived spatial and contrast resolution for a wide range of cone-beam computed tomography (CBCT) devices. Study Design: A customized polymethyl methacrylate (PMMA) phantom was developed. Inserts containing a line-pair and rod pattern were used. The phantom was scanned with 13 CBCT devices and 1 multislice CT (MSCT) device using a variety of scanning protocols. The images were presented to 4 observers for scoring. Results: The observer scores showed excellent agreement. A wide range was seen in image quality between CBCT exposure protocols. Compared with the average CBCT scores, the MSCT protocols scored lower for the line-pair insert but higher for the rod insert. Conclusions: CBCT devices are generally suitable for the visualization of high-contrast structures. Certain exposure protocols can be used for depicting low-contrast structures or fine details. The user should be able to select appropriate exposure protocols according to varying diagnostic requirements. © 2012 Elsevier Inc. All rights reserved.
Συγγραφείς:
Pauwels, R.
Beinsberger, J.
Stamatakis, H.
Tsiklakis, K.
Walker, A.
Bosmans, H.
Bogaerts, R.
Jacobs, R.
Horner, K.
Περιοδικό:
Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Λέξεις-κλειδιά:
article; comparative study; computed tomography scanner; cone beam computed tomography; equipment; human; image quality; radiation dose; reproducibility, Cone-Beam Computed Tomography; Humans; Phantoms, Imaging; Radiation Dosage; Reproducibility of Results; Tomography Scanners, X-Ray Computed
DOI:
10.1016/j.oooo.2012.01.020
