Preliminary evaluation of dual imaging plate intraoral radiography

Abstract

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.

Correction of intraoral radiography with dual imaging plates using enlargement of the horizontal direction with division into 12 blocks

“…Watanabe et al [12] reported that the contrast-to-noise ratio increased and the noise decreased in DIP images in which FIP and BIP were synthesized in intraoral radiography. Another problem with IP is that scratches and dust cause artifacts.…”

“…Six sets of DIPs (12 IPs; Digora Optime Imaging Plate size 2, PaloDEx Group Oy, Tuusula, Finland) were used in the study. Following the method of Watanabe et al [12], the thin iron plate of the FIP was first peeled off. The FIP and BIP were stacked and placed in a plastic bag (disposable cover for the Digora Optime imaging plate, size 2, Tanaka-ya Co., Tokyo, Japan).…”

“…Asahi X-ray Xspot-TS (Asahi Roentgen Ind., Co., Ltd., Kyoto, Japan) was used as the X-ray generator. The imaging conditions were tube voltage 60 kV, tube current 6 mA and exposure time 0.1 s. The focus to DIP distance was set at 40 cm in accordance with previous studies [12,13].…”

“…Watanabe et al [12] described the principles of the dual imaging plate (DIP) method, which uses two IPs, a front IP (FIP) and a back IP (BIP), for taking intraoral radiographs. The DIP method produces a synthesized image with the two images from the FIP and BIP.…”

Influence of Pixel Size Difference on Imaging Plate Computed Radiography on the Quality of Digital Images in Intraoral Dental Radiography Examination

“…In research (Watanabe et al, 2022) using a CR and PSP system in the form of a Dual Imaging Plate (DIP) and Conventional Single Imaging Plate (CSIP) with samples using a Porcine Mandible Embedded in Acrylic Resin phantom, aiming to evaluate the CNR, spatial resolution and subject quality of the DIP. The results are that the CNR value on DIP is higher when compared to the CNR value on FIP, the decrease in spatial resolution is limited on DIP, and the subjective image quality on DIP is higher than on FIP.…”