Characteristics of radiographic images acquired with CdTe, CCD and CMOS detectors in skull radiography

Queiroz, Polyane Mazucatto; Santaella, Gustavo Machado; Lopes, Sérgio Lúcio Pereira de Castro; Haiter-Neto, Francisco; Freitas, Deborah Queiroz

doi:10.5624/isd.2020.50.4.339

Cited by 1 publication

(2 citation statements)

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“…The voltage in each transistor can be read separately and consequently appears as a gray value. 15 16 17 CMOS technology is capable of onchip integration of analog-to-digital conversion circuitry and produces digital signals without external converters; thus, the radiographic images are available to view in a matter of seconds after the exposure. A disadvantage of CMOS detectors is their thickness, since they are bulky and rigid, which may cause discomfort and application issues.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, some phosphor plates are placed in a plastic envelope with sharp edges to prevent contamination and the operator is unable to bend their corners. 15 16 17 18 The digital receptors may therefore cause problems for the patient and the examiner during radiographic imaging. In clinical settings, patient discomfort and difficulties in tolerating the detector in the mouth may lead to positioning errors, which also influence the diagnostic quality of images and diagnostic accuracy.…”

Section: Introductionmentioning

confidence: 99%

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Clinical comparison of intraoral CMOS and PSP detectors in terms of time efficiency, patient comfort, and subjective image quality

et al. 2022

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Purpose This study compared the effectiveness of complementary metal-oxide semiconductors (CMOS) and photostimulable phosphor (PSP) plates as intraoral imaging systems in terms of time efficacy, patient comfort, and subjective image quality assessment in real clinical settings. Materials and Methods Fifty-eight patients (25 women and 33 men) were included. Patients were referred for a full-mouth radiological examination including 1 bitewing radiograph (left and right) and 8 periapical radiographs for each side (left maxilla/mandible and right maxilla/mandible). For each patient, 1 side of the dental arch was radiographed using a CMOS detector, whereas the other side was radiographed using a PSP detector, ensuring an equal number of left and right arches imaged by each detector. Clinical application time, comfort/pain, and subjective image quality were assessed for each detector. Continuous variables were summarized as mean±standard deviation. Differences between detectors were evaluated using repeated-measures analysis of variance. P <0.05 was accepted as significant. Results The mean total time required for all imaging procedures with the CMOS detector was significantly lower than the mean total time required for imaging procedures with PSP ( P <0.05). The overall mean patient comfort scores for the CMOS and PSP detectors were 4.57 and 4.48, respectively, without a statistically significant difference ( P >0.05). The performance of both observers in subjectively assessing structures was significantly higher when using CMOS images than when using PSP images for all regions ( P <0.05). Conclusion The CMOS detector was found to be superior to the PSP detector in terms of clinical time efficacy and subjective image quality.

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Section: Introductionmentioning

confidence: 99%