title

بررسی تاثیر نور و تاخیر زمان اسکن برروی کیفیت تصاویر در PSP های داخل دهانی

اسکندرلو, امیر and یوسفی, آرمان and سهیلی, ستاره and قاضی خانلو, کریم and امینی, پیام and محمدپور, هانیه (1396) بررسی تاثیر نور و تاخیر زمان اسکن برروی کیفیت تصاویر در PSP های داخل دهانی. The Open Dentistry Journal ــ 11 . pp. 690-700. شاپا 1874-2106

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Official URL: https://opendentistryjournal.com/VOLUME/11/PAGE/69...


Title

Evaluation of the Effect of Light and Scanning Time Delay on The Image Quality of Intra Oral Photostimulable Phosphor Plates

English Abstract

Background: Nowadays, digital radiography is widely used in dental practice. One of the most common types is Photo Stimulated Phosphor Plate (PSP). Objective: The aims of this experimental study were to evaluate the impacts of different combinations of storage conditions and varying delays in reading of digital images captured using PSPs. Methods: Standardized images of a step wedges were obtained using PSPs from the Digora digital systems. Plates were exposed and immediately scanned to produce the baseline gold standard. The plates were re-exposed and stored in four different storage conditions: white light, yellow light, natural light environment and dark room, then scanned after 10 and 30 minutes and 4 and 8 hours. Objective analysis was conducted by density measurements and the data were analyzed statistically using GEE test. Subjective analysis was performed by two oral and maxillofacial radiologists and the results were analyzed using McNemar’s test. Results: The results from GEE analysis show that in the natural light environment, the densities in 10 minutes did not differ from the baseline. The mean densities decreased significantly during the time in all environments. The mean densities in step 2 for the dark room environment decreased with a slighter slope in comparison to yellow environment significantly. Conclusion: PSP images showed significant decrease in the density in plates scanned for 10 minutes or longer after exposure which may not be detected clinically. The yellow light environment had a different impact on the quality of PSP images. The spatial resolution did not change significantly with time.

Item Type:Article
زبان سند : انگلیسی
نویسنده اول :امیر اسکندرلو
نویسنده مسئول :آرمان یوسفی
نویسنده :ستاره سهیلی
Additional Information:Indexed in: ESCI, Pubmed/PMC, Scopus, Chemical Abstracts Service, Google Scholar, Chemical Engineering and Biotechnology Abstracts, Index Copernicus,
کلیدواژه ها (انگلیسی):Contrast, Spatial resolution, Photostimulable phosphor plates, Digital image, Environmental light, Density
Subjects:WU Dentistry. Oral surgery
Divisions:Department of Dentistry > Oral and maxillofacial radiography
ID Code:10379
Deposited By: دکتر آرمان یوسفی
Deposited On:10 May 1397 13:01
Last Modified:10 May 1397 13:01

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