Abstract
Wave-based optical coherence elastography (OCE) is a rapidly emerging technique for elasticity assessment of tissues having high displacement sensitivity and simple implementation. However, most current noncontact wave excitation techniques are unable to target a specific tissue site in 3D and rely on transversal scanning of the imaging beam. Here, we demonstrate that dye-loaded perfluorocarbon nanoparticles (nanobombs) excited by a pulsed laser can produce localized axially propagating longitudinal shear waves while adhering to the laser safety limit. A phase-correction method was developed and implemented to perform sensitive nanobomb elastography using a ∼1.5 MHz Fourier domain mode-locking laser. The nanobomb activation was also monitored by detecting photoacoustic signals. The highly localized elastic waves detected by the nanobomb OCE suggest the possibility of high-resolution 3D elastographic imaging.
Original language | English (US) |
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Pages (from-to) | 3162-3165 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 44 |
Issue number | 12 |
DOIs | |
State | Published - 2019 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics