scholarly journals Relationship between physical factors and subjective image quality of cone-beam computed tomography images according to diagnostic task

2015 ◽  
Vol 119 (3) ◽  
pp. 357-365 ◽  
Author(s):  
Jin-Woo Choi ◽  
Sam-Sun Lee ◽  
Soon-Chul Choi ◽  
Min-Suk Heo ◽  
Kyung-Heo Huh ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Physical Factors ◽  
Subjective Image Quality ◽  
Computed Tomography Images

Comparative assessment of subjective image quality of cross-sectional cone-beam computed tomography scans

2011 ◽  
Vol 53 (4) ◽  
pp. 501-508 ◽  
Author(s):  
Kivanç Kamburoglu ◽  
Sema Murat ◽  
Eray Kolsuz ◽  
Hakan Kurt ◽  
Selcen Yüksel ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Cone Beam Computed Tomography ◽  
Comparative Assessment ◽  
Cone Beam ◽  
Cross Sectional ◽  
Subjective Image Quality ◽  
Computed Tomography Scans

Influence of cone-beam computed tomography milliamperage settings on image quality of the mandibular third molar region

2013 ◽  
Vol 30 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Frederico Sampaio Neves ◽  
Thaís de Camargo Souza ◽  
Sérgio Lins de-Azevedo-Vaz ◽  
Paulo Sérgio Flores Campos ◽  
Frab Norberto Bóscolo
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Cone Beam Computed Tomography ◽  
Third Molar ◽  
Cone Beam ◽  
Mandibular Third Molar ◽  
Molar Region

scholarly journals Relationship between CNR and visibility of anatomical structures of cone-beam computed tomography images under different exposure parameters

2020 ◽  
Vol 49 (5) ◽  
pp. 20190336
Author(s):  
Miss Fei Wang ◽  
Xiaoyan Xie ◽  
Gang Li ◽  
Zuyan Zhang
Keyword(s):  
Image Quality ◽  
Change Point ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Physical Factors ◽  
Anatomical Structures ◽  
Subjective Image Quality ◽  
Computed Tomography Images ◽  
Tissue Equivalent ◽  
Imagej Software

Objectives: The purpose of this study was to investigate the image quality of cone beam CT (CBCT) under different exposure parameters and the relationship between contrast-to-noise and visibility of eight anatomical structures. Methods: CBCT images for the evaluation of subjective image quality were acquired on an anthropopathic phantom containing a human skeleton embedded in soft tissue equivalent materials using 25 exposure protocols. Visibility of eight anatomical structures was evaluated by five independent observers. Using the SEDENTEXCT IQ Image Quality phantom, the contrast-to-noise ratio (CNR) was calculated by ImageJ software. Results: A reduction on the visibility of anatomical structures was seen under lower exposure parameters. However, for 84% of the protocols, visibility of anatomical structures remained acceptable even under some lower parameter settings. As CNR increased, the visibility of anatomical structures also increased correspondingly. A change point could be found in the CNR interval 29.42–36.51 after which the visibility of anatomical structures no longer increases with the increase of CNR. Conclusions: Although CNR decrease under a lower exposure parameter, the image quality often remained acceptable at exposure levels below the manufacture’s recommended settings. It is possible to standardize subjective image quality by physical factors. Currently, it is not possible to predetermine a change point CNR value due to different CBCT machine and variation of diagnostic tasks.

Dose and Image Quality of Cone-Beam Computed Tomography as Compared With Conventional Multislice Computed Tomography in Abdominal Imaging

2014 ◽  
Vol 49 (10) ◽  
pp. 675-684 ◽  
Author(s):  
Alexander A. Schegerer ◽  
Ursula Lechel ◽  
Manuel Ritter ◽  
Gerald Weisser ◽  
Christian Fink ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Cone Beam Computed Tomography ◽  
Multislice Computed Tomography ◽  
Abdominal Imaging ◽  
Cone Beam

An audit of image quality of three dental cone beam computed tomography units

Radiography ◽  
2016 ◽  
Vol 22 (1) ◽  
pp. 56-59
Author(s):  
C.J. Greenall ◽  
B. Thomas ◽  
N.A. Drage ◽  
J. Brown
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Cone Beam Computed Tomography ◽  
Cone Beam
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