TY - JOUR
TI - Comparison of spatial and contrast resolution for cone-beam computed tomography scanners
AU - Pauwels, R.
AU - Beinsberger, J.
AU - Stamatakis, H.
AU - Tsiklakis, K.
AU - Walker, A.
AU - Bosmans, H.
AU - Bogaerts, R.
AU - Jacobs, R.
AU - Horner, K.
JO - Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
PY - 2012
VL - 114
TODO - 1
SP - 127-135
PB - 
SN - 2212-4403
TODO - 10.1016/j.oooo.2012.01.020
TODO - 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
TODO - 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.
ER -