Dual short wavelength infrared transillumination/reflectance mode imaging for caries detection.
Dual short wavelength infrared transillumination/reflectance mode imaging for caries detection.
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DOI：
10.1117/1.jbo.26.4.043004
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发表时间：
2021-01
影响因子：
3.5
通讯作者：
Fried D
中科院分区：
文献类型：
--
作者：
Zhu Y;Abdelaziz M;Simon J;Le O;Fried D
意义：我们开发了一种临床探针，能够获得近端和咬合表面病变的近同时短波长红外（SWIR）反射和咬合透照图像。我们假设双重图像将有助于区分浅和深咬合病变，并减少假阳性（FPs）的可能性。目的：本研究的目的是在临床研究开始之前，测试双反射和咬合透照探头在拔牙上的性能。方法：采用3D打印双探头，成像系统采用InGaAs相机和宽带超发光二极管光源，发射1300 nm的宽带光进行闭塞透照，1600 nm的光进行交叉偏振反射。双探头的诊断性能评估使用120拔出的牙齿近似和咬合病变。反射图像和透照图像融合成单一图像，以增强声音和病变区域的对比度。两种模式下病灶对比度均不随病灶深度或离咬合面距离的增加而显著增加。此外，以微计算机断层扫描为金标准，比较了x线摄影、个体反射和透照图像、双重图像和融合图像的诊断性能。结果：1600 nm反射成像对咬合面和近端表面病变的诊断准确率最高，而x线摄影的FPs数量最低。结论：本研究表明，使用单一临床设备同时获取反射和透照SWIR图像是可能的。
Significance: We have developed a clinical probe capable of acquiring near-simultaneous short-wavelength infrared (SWIR) reflectance and occlusal transillumination images of lesions on tooth proximal and occlusal surfaces. We hypothesize that dual images will aid in differentiating between shallow and deep occlusal lesions and reduce the potential of false positives (FPs). Aim: The aim of this study was to test the performance of the dual reflectance and occlusal transillumination probe on extracted teeth prior to commencing clinical studies. Approach: The dual probe was 3D printed and the imaging system uses an InGaAs camera and broadband superluminescent diode light sources that emit broadband light at 1300 nm for occlusal transillumination and 1600-nm light for cross-polarization reflectance. The diagnostic performance of the dual probe was assessed using 120 extracted teeth with approximal and occlusal lesions. Reflectance and transillumination images were fused into single images to enhance the contrast between sound and lesion areas. The lesion contrast in both modes did not increase significantly with either the lesion depth or the distance from the occlusal surface for approximal lesions. In addition, the diagnostic performance of radiography, the individual reflectance and transillumination images, dual images, and fused images were compared using micro-computed tomography as the gold standard. Results: Reflectance imaging at 1600 nm yielded the highest diagnostic accuracy for lesions on both occlusal and proximal surfaces while radiography yielded the lowest number of FPs. Conclusion: This study demonstrates that simultaneous acquisition of both reflectance and transillumination SWIR images is possible with a single clinical device.