Photoacoustics

This excel spreadsheet contains the revised raw measurement points for our quantitative Monte Carlo multilayer simulation, as well as ex vivo and in vivo validation experiments.

The experimental data are obtained by the differential photoacoustic spectrometer established in this paper. A novel photoacoustic resonator was designed and employed in the D-PAS for controlling a large flow rate, improving response time, and keeping the flow noise at a low level. The measured results of NO2 are consistent with the NOx analyzer and environmental monitoring station results.

A high-sensitivity N2O photoacoustic sensor using a 4.53 μm quantum cascade laser was developed and described. The 2.3% water vapor was added to the analyzed sample to improve the vibrational-translational (V-T) relaxation rate of N2O molecule transition, and therefore enhance the N2O photoacoustic signal. High performance with a minimum detection limit of 28 ppbv in 1 second and a measurement precision of 34 ppbv have been achieved, respectively. Without sacrificing the time resolution of the system, the Kalman adaptive filtering improves the measurement precision of the system by 2.3 times. The ability of the N2O photoacoustic sensor was demonstrated by continuous measurement of atmospheric N2O concentration for a period of 7 hours.

The code and example data provided shall enable you to either train the models described in the paper "Photoacoustic image synthesis with generative adversarial networks" (Photoacoustics 2022, https://doi.org/10.1016/j.pacs.2022.100402) on your own data or to infer results given the trained models.

Data including imaging and processed data acquired using an LED-based photoacoustic imaging system from both tissue mimicking phantoms and animal models to demonstrate technical and biological imaging performance. Data acquired from tissue mimicking phantoms is available in raw form (.fig file) zipped into a single folder (Prexion-Stability.zip) Data acquired from animals is available in processed form, representing the data comprising the graphs within the published manuscript. Accompanying raw data is too large for deposit but is available upon request from the corresponding author for a direct transfer.

Data accompanying the publication: Three-dimensional view of out-of-plane artifacts in photoacoustic imaging using a laser-integrated linear-transducer-array probe. In this work, we present a 3D reconstruction method using axial transducer array displacement. By axially displacing the transducer array, out-of-plane absorbers can be three-dimensionally visualized at an elevation distance of up to the acquired imaging depth. Additionally, out-of-plane artifacts (OPAs) in the in-plane image are significantly reduced. We experimentally demonstrate the method with phantom and in vivo experiments using an integrated photoacoustic probe. We also compare the method with elevational transducer array displacement and take into account the sensitivity of the transducer array in the 3D reconstruction.

Data accompanying the publication: Three-dimensional view of out-of-plane artifacts in photoacoustic imaging using a laser-integrated linear-transducer-array probe. In this work, we present a 3D reconstruction method using axial transducer array displacement. By axially displacing the transducer array, out-of-plane absorbers can be three-dimensionally visualized at an elevation distance of up to the acquired imaging depth. Additionally, out-of-plane artifacts (OPAs) in the in-plane image are significantly reduced. We experimentally demonstrate the method with phantom and in vivo experiments using an integrated photoacoustic probe. We also compare the method with elevational transducer array displacement and take into account the sensitivity of the transducer array in the 3D reconstruction.