Motion-compensated noninvasive periodontal health monitoring using handheld and motor-based photoacoustic-ultrasound imaging systems

• DOI: 10.1364/boe.417345
• Publication Date: 2021-02-08T19:00:08Z
• Authors: Moein Mozaffarzadeh; Colman Moore; Erfan Barzegar Go...; Yash Mantri; Ali Hariri; Alec Jorns; Lei Fu; Martin D. Verweij; Mahdi Orooji; Nico de Jong; Jesse V. Jokerst
• Keywords: Modality (human–computer interaction); Match moving; Artifact (error)

Simultaneous visualization of the teeth and periodontium is significant clinical interest for image-based monitoring periodontal health. We recently reported application a dual-modality photoacoustic-ultrasound (PA-US) imaging system resolving anatomy pocket depths in humans. This work utilized linear array transducer attached to stepper motor generate 3D images via maximum intensity projection. prior also used medical head immobilizer reduce artifacts during volume rendering caused by motion from subject (e.g., breathing, minor movements). However, this solution does not completely eliminate while complicating procedure causing patient discomfort. To address issue, we report implementation an image registration technique correctly align B-mode PA-US artifact-free 2D cross-sections. Application deshaking PA phantoms revealed 80% similarity ground truth when shaking was intentionally applied scans. Images handheld sweeps could be deshaken using LED scanner. In ex vivo porcine mandibles, pigmentation enamel well-estimated within 0.1 mm error. The depth measured healthy human good agreement with our study. demonstrates that modality-independent can clinically relevant scans operator burden skill discomfort showing potential imaging.