In Vivo Three-Dimensional Raster Scan Optoacoustic Mesoscopy Using Frequency Domain Inversion
- Resource Type
- Authors
- Murad Omar; Pouyan Mohajerani; Qutaiba Mustafa; Vasilis Ntziachristos; Christian Zakian; Ludwig Prade; Antonios Stylogiannis
- Source
- IEEE Trans. Med. Imaging 40, 3349-3357 (2021)
- Subject
- Physics
Detectors
Fast Fourier Transform
Frequency-domain Analysis
Image Reconstruction
Imaging
Mathematical Model
Mesoscopy
Omega-k Migration
Optoacoustics
Photoacoustics
Time-domain Analysis
Transducers
Transfer Function
Radiological and Ultrasound Technology
Phantoms, Imaging
business.industry
Computation
Inversion (meteorology)
Computer Science Applications
Photoacoustic Techniques
Mice
Optics
Frequency domain
Image Processing, Computer-Assisted
Animals
Tomography
Electrical and Electronic Engineering
Raster scan
business
Algorithms
Software
Impulse response
Optoacoustic imaging
Skin
- Language
- ISSN
- 1558-254X
0278-0062
Optoacoustic signals are typically reconstructed into images using inversion algorithms applied in the time-domain. However, time-domain reconstructions can be computationally intensive and therefore slow when large amounts of raw data are collected from an optoacoustic scan. Here we considered a fast weighted ${\omega }-{k}$ (FWOK) algorithm operating in the frequency domain to accelerate the inversion in raster-scan optoacoustic mesoscopy (RSOM), while seamlessly incorporating impulse response correction with minimum computational burden. We investigated the FWOK performance with RSOM measurements from phantoms and mice in vivo and obtained 360-fold speed improvement over inversions based on the back-projection algorithm in the time-domain. This previously unexplored inversion of in vivo optoacoustic data with impulse response correction in frequency domain reconstructions points to a promising strategy of accelerating optoacoustic imaging computations, toward video-rate tomography.