Related Experiment Video
Updated: Oct 8, 2025

A Standardized Approach to Extra-Oral and Intra-Oral Digital Photography
Published on: July 22, 2022
Preliminary evaluation of dual imaging plate intraoral radiography
Kenichiro Watanabe1, Yusuke Imanishi1, Masao Kato1
1Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry.
Purpose:
This study evaluated the contrast-to-noise ratio (CNR), spatial resolution, and subjective quality of dual imaging plates (DIP) intraoral radiography.
Methods:
The DIP and conventional single IP (CSIP) methods both used YCR DT-1 imaging plates (Yoshida Co.). The DIP, comprising a front IP (FIP) and back IP (BIP), was constructed. DIP images were synthesized from the FIP and BIP images. An aluminum step phantom was used to measure the CNR. A line pair gauge was used to measure the spatial imaging resolution. A phantom comprising a porcine mandible embedded in acrylic resin was used for subjective evaluation.
Results:
The CNR of the DIP image was 32% higher than that of the FIP image. The spatial resolution achieved using the FIP, DIP, and CSIP was highly comparable except above 4 line pairs/mm, where that of the CSIP was highest. In subjective evaluation, the noise in the DIP images was significantly lower than in those obtained using the FIP and CSIP.
Conclusion:
The CNR of the DIP was higher than that of the FIP. The decrease in spatial resolution of the DIP was limited. The subjective image quality of the DIP was higher than that of the FIP.
Related Concept Videos
X-ray Imaging
Imaging Studies for Cardiovascular System III: X-Ray
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Radiological Investigation I: X-ray and CT
Imaging Studies II: Ultrasonography
Imaging Studies V: Intravenous Urography and Retrograde Pyelography

