Digital Enhancement of Radiographs: Can It Improve Caries Diagnosis?

Shrout, Michael K.; Russell, Charles D.; Potter, Brad J.; Powell, Billy J.; Hildebolt, Charles F.

doi:10.14219/jada.archive.1996.0238

Cited by 49 publications

(31 citation statements)

References 15 publications

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“…The quality of digital images, concerning resolution or density range, has been described as inferior to conventional radiographs [Dunn and Kantor, 1993;McDonnell and Price, 1993]. However, the digital image appearance can be adjusted with a variety of image-processing tools, enhancing the valuable information and suppressing the noise [Shrout et al, 1996;. As a rule, contrast and edge enhancement routines as well as magnification are included in commercial digital systems [Wenzel, 1993].…”

Section: Introductionmentioning

confidence: 99%

Conventional, Digital and Contrast–Enhanced Bitewing Radiographs in the Decision to Restore Approximal Carious Lesions

2001

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The purpose of the present investigation was to compare the accuracy of treatment decisions in proximal sites using three intra–oral radiographic systems. Additionally, the impact of an automated non–linear grey–level display was evaluated. Ten observers assessed 84 surfaces on bitewing radiographs for their requirement of restorative treatment using a 6–rank confidence scale. Radiographs were taken with conventional film images (Ultraspeed), a storage phosphor plate (Digora) and a CCD system (Dexis). Additionally, the Dexis software was expanded by a contrast enhancement routine (Dexis+). The restorative treatment threshold was defined as presence of macroscopic cavitation. Regarding the areas below mean ROC curves no significant differences were detected between the groups (p>0.05). Likelihood ratios for positive test results were: 5.29 (Ultraspeed), 8.14 (Digora), 9.67 (Dexis) and 11.37 (Dexis+). The accuracy of restorative treatment decisions based on digital and conventional radiographs is comparable. If a dichotomous treatment decision was requested, the digital systems demonstrated a notable tendency towards higher likelihood of true–positive decisions.

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Section: Introductionmentioning

confidence: 99%

Conventional, Digital and Contrast–Enhanced Bitewing Radiographs in the Decision to Restore Approximal Carious Lesions

2001

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“…In dental surgery, digital image enhancement improves the metric measures for facial soft tissue structures [8]. It also provides better detection rates of caries [39]. Our data suggest the Retinex filter has the highest probability for correct diagnosis of intertrochanteric fractures.…”

Section: Discussionmentioning

confidence: 80%

“…Most of the literature regarding digital image enhancement are descriptive and do not offer comprehensive comparisons of filters (Table 4) [6,8,12,18,35,39,40]. For chest radiography, digital image enhancement leads to better tumor detection and better nodule detection rate [6,18].…”

Section: Discussionmentioning

confidence: 99%

“…Numerous studies describe the use of digital image enhancement, most for chest or dental radiography [3,6,8,12,17,18,24,25,32,34,35,37,39,40]. Image enhancement outperformed standard DICOM images, eg, it enabled better lung and skeletal tumor detection [3,6,18], better craniofacial soft tissue measures [8], improved detection of lung and mediastinal nodules [11], and superior dental caries identification [39].…”

Section: Introductionmentioning

confidence: 99%

“…Image enhancement outperformed standard DICOM images, eg, it enabled better lung and skeletal tumor detection [3,6,18], better craniofacial soft tissue measures [8], improved detection of lung and mediastinal nodules [11], and superior dental caries identification [39]. Other studies have only presented various filters without studying their performance in a clinical setting [17,23,24,32,34,35].…”

Section: Introductionmentioning

confidence: 99%

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Digital Image Enhancement Improves Diagnosis of Nondisplaced Proximal Femur Fractures

Botser

Herman

Nathaniel³

et al. 2009

Clinical Orthopaedics &Amp; Related Research

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Today most emergency room radiographs are computerized, making digital image enhancement a natural advancement to improve fracture diagnosis. We compared the diagnosis of nondisplaced proximal femur fractures using four different image enhancement methods using standard DICOM (Digital Imaging and Communications in Medicine) after window-leveling optimization. Twentynine orthopaedic residents and specialists reviewed 28 pelvic images consisting of 25 occult proximal femur fractures and three images with no fracture, using four different image filters and the original DICOM image. For intertrochanteric fractures, the Retinex filter outperforms the other filters and the original image with a correct fracture type diagnosis rate of 50.6%. The Retinex filter also performs well for diagnosis of other fracture types.

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