The comparison of subjective image quality in conventional and digital panoramic radiography

Abstract Aim To compare digital panoramic images acquired for the presurgical assessment of third molars captured with a storage phosphorbased system with conventional film panoramic radiographs. Methods and Materials A total of 51 pairs of digital and conventional panoramic images, made simultaneously, were included in this study. The images were evaluated for diagnostic quality prior to third molar surgery by two experienced oral surgeons and rated with a four-point grading scale. Results Despite the fact that conventional panoramic images were rated higher than the digital images, the difference was not statistically significant. Conclusions Conventional and digital panoramic images were found to be of comparable image quality with regard to their diagnostic contribution to third molar surgery. Clinical Significance This study is contributory to understanding differences in image quality between digital and conventional panoramic radiography for certain diagnostic tasks. The lack of significant differences in image quality may be an endorsement for digital panoramic radiography. Citation Parissis N, Angelopoulos C, Mantegari S, Karamanis S, Masood F, Tsirlis A. A Comparison of Panoramic Image Quality between a Digital Radiography Storage Phosphor System and a Film-Based System. J Contemp Dent Pract [Internet]. 2010 Jan; 11(1):009-016. Available from: http://www.thejcdp.com/journal/view/ volume11-issue1-parissis.

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Clinical Evaluation of Dose Reduction on Image Quality of Panoramic Radiographs

The Journal of Contemporary Dental Practice ◽

10.5005/jcdp-9-5-34 ◽

2008 ◽

Vol 9 (5) ◽

pp. 34-41 ◽

Cited By ~ 4

Author(s):

Meryem Toraman Alkurt ◽

Likay Peker ◽

Gülten Usalan ◽

Bülent Altunkaynak

Keyword(s):

Image Quality ◽

Dose Reduction ◽

Clinical Evaluation ◽

Panoramic Radiography ◽

Panoramic Radiographs ◽

Tube Current ◽

Digital Panoramic Radiography ◽

Significant Difference ◽

Panoramic Images

Abstract Aim The purpose of this study was to evaluate the effect of tube current reduction on image quality using medium and regular intensifying screens as well as a digital system for panoramic radiography. Methods and Materials A total of 150 panoramic images of 75 patients were obtained in the study. The initial images were taken at standard exposure settings, and secondary images were exposed with the tube current reduced at different rates. Results There was no statistically significant difference (p>0.05) between the two exposures for Group 3 (the rate of dose reduction 25%) while a statistically significant difference (p<0.05) was found in Group 4 (the rate of dose reduction 50%) using medium intensifying screens for all observers. No statistically significant difference was found between the two exposures on digital panoramic images. Conclusion According to the results of this study a dose reduction of 25% was achieved for medium intensifying screens and for digital panoramic images without any loss of image quality. Clinical Significance A substantial reduction in radiation exposure can be achieved in conventional panoramic radiography using a medium intensifying screen and in digital panoramic radiography without any loss of image quality needed for radiological evaluation of anatomical structures and pathological conditions. Citation Alkurt MT, Peker I, Usalan G, Altunkaynak B. Clinical Evaluation of Dose Reduction on Image Quality of Panoramic Radiographs. J Contemp Dent Pract 2008 July; (9)5:034-041.

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The Subjective Image Quality of Conventional and Digital Panoramic Radiography Among 6 to 10 year old Children

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.31.2.46lx77211v483x01 ◽

2007 ◽

Vol 31 (2) ◽

pp. 109-112 ◽

Cited By ~ 3

Author(s):

N Makris ◽

K Tsiklakis ◽

K Alexiou ◽

A Vierrou ◽

Th Stefaniotis

Keyword(s):

Image Quality ◽

Rating Scale ◽

Panoramic Radiography ◽

Image Interpretation ◽

Diagnostic Image Quality ◽

Diagnostic Quality ◽

Digital Panoramic Radiography ◽

Pediatric Dentists ◽

Tooth Germs

Objectives: To compare the diagnostic quality of orthopantomographs made with the conventional unit Orthophos Siemens and the direct digital unit Planmeca 2000 cc Proline among children 6-10 years old and to investigate possible differences on image interpretation between oral radiologists and pediatric dentists. Methods: Study material included two independent groups of panoramic images (50 in each group) made with different panoramic modalities (digital, conventional). Eight observers (four pediatric dentists and four oral radiologists) evaluated all images for diagnostic quality in 12 pre-determined areas using a 4-point rating scale. Results: Digital and conventional panoramic radiography performed almost similarly as far as it concerns the specific diagnostic tasks rated with the exception of the interproximal contacts of mandibular molars where digital panoramic radiography was scored significantly higher and the periapical region of anterior mandible and anterior mandibular tooth germs where conventional panoramic radiography was found to be significantly better. Both oral radiologists and pediatric dentists graded similarly digital and conventional radiographs for a variety of diagnostic tasks. Conclusions: It can be concluded that diagnostic image quality obtained with the digital orthopantomograph unit Planmeca 2000 cc Proline was generally equal to image quality obtained with the conventional orthopantomograph unit Orthophos Plus CD. Image interpretation between oral radiologists and pediatric dentists was not substantially different

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A study for determination of various positioning errors in digital panoramic radiography for evaluation of diagnostic image quality

Indian Journal of Dental Research ◽

10.4103/ijdr.ijdr_781_16 ◽

2017 ◽

Vol 28 (6) ◽

pp. 666

Author(s):

ApurvaMohite Khator ◽

MuktaB Motwani ◽

AnuraagB Choudhary

Keyword(s):

Image Quality ◽

Panoramic Radiography ◽

Diagnostic Image Quality ◽

Diagnostic Image ◽

Positioning Errors ◽

Digital Panoramic Radiography

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A clinical evaluation of some factors affecting image quality in panoramic radiography

Dentomaxillofacial Radiology ◽

10.1038/sj.dmfr.4600505 ◽

1999 ◽

Vol 29 (2) ◽

pp. 81-84 ◽

Cited By ~ 2

Author(s):

G Kaeppler ◽

D Axmann-Krcmar ◽

I Reuter ◽

J Meyle ◽

G Gómez-Román

Keyword(s):

Image Quality ◽

Clinical Evaluation ◽

Panoramic Radiography ◽

Factors Affecting

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Self-navigated 3D whole-heart MRA for non-enhanced surveillance of thoracic aortic dilation: a comparison to CTA

European Heart Journal - Cardiovascular Imaging ◽

10.1093/ehjci/jeaa356.318 ◽

2021 ◽

Vol 22 (Supplement_1) ◽

Author(s):

P Poskaite ◽

M Pamminger ◽

C Kranewitter ◽

C Kremser ◽

M Reindl ◽

...

Keyword(s):

Computed Tomography ◽

Image Quality ◽

Aortic Aneurysm ◽

Thoracic Aortic Aneurysm ◽

Aortic Dilation ◽

Subjective Image Quality ◽

Contrast Enhanced ◽

Whole Heart ◽

Enhanced Computed Tomography ◽

Contrast Enhanced Computed Tomography

Abstract Funding Acknowledgements Type of funding sources: None. Background The natural history of thoracic aortic aneurysm (TAA) is one of progressive expansion. Asymptomatic patients who do not meet criteria for repair require conservative management including ongoing aneurysm surveillance, mostly carried out by contrast-enhanced computed tomography angiography (CTA). Purpose To prospectively compare image quality and reliability of a prototype non-contrast, self-navigated 3D whole-heart magnetic resonance angiography (MRA) with contrast-enhanced computed tomography angiography (CTA) for sizing of thoracic aortic aneurysm (TAA). Methods Self-navigated 3D whole-heart 1.5 T MRA was performed in 20 patients (aged 67 ± 8.6 years, 75% male) for sizing of TAA; a subgroup of 18 (90%) patients underwent additional contrast-enhanced CTA on the same day. Subjective image quality was scored according to a 4-point Likert scale and ratings between observers were compared by Cohen’s Kappa statistics. Continuous MRA and CTA measurements were analyzed with regression and Bland-Altman analysis. Results Overall subjective image quality as rated by two observers was 1 [interquartile range (IQR) 1-2] for self-navigated MRA and 1.5 [IQR 1-2] for CTA (p = 0.717). For MRA a perfect inter-observer agreement was found for presence of artefacts and subjective image sharpness (κ=1). Subjective signal inhomogeneity correlated highly with objectively quantified inhomogeneity of the blood pool signal (r = 0.78-0.824, all p <0.0001). Maximum diameters of TAA as measured by self-navigated MRA and CTA showed excellent correlation (r = 0.997, p < 0.0001) without significant inter-method bias (bias -0.0278, lower and upper limit of agreement -0.74 and 0.68, p = 0.749). Inter- and intraobserver correlation of aortic aneurysm as measured by MRA was excellent (r = 0.963 and 0.967, respectively) without significant bias (all p ≤ 0.05). Conclusion Self-navigated 3D whole-heart MRA enables reliable contrast- and radiation free aortic dilation surveillance without significant difference to standardized CTA while providing predictable acquisition time and by offering excellent image quality. Abstract Figure.

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