Couplants in acoustic biosensing systems

R Manwar, L Saint-Martin, K Avanaki - Chemosensors, 2022 - mdpi.com
Acoustic biosensors are widely used in physical, chemical, and biosensing applications.
One of the major concerns in acoustic biosensing is the delicacy of the medium through …

[HTML][HTML] Development and characterization of transfontanelle photoacoustic imaging system for detection of intracranial hemorrhages and measurement of brain …

R Manwar, K Kratkiewicz, S Mahmoodkalayeh, A Hariri… - Photoacoustics, 2023 - Elsevier
We have developed and optimized an imaging system to study and improve the detection of
brain hemorrhage and to quantify oxygenation. Since this system is intended to be used for …

Transfontanelle photoacoustic imaging for in-vivo cerebral oxygenation measurement

R Manwar, LS McGuire, MT Islam, A Shoo… - Scientific Reports, 2022 - nature.com
The capability of photoacoustic (PA) imaging to measure oxygen saturation through a
fontanelle has been demonstrated in large animals in-vivo. We called this method …

[HTML][HTML] Transfontanelle photoacoustic imaging of intraventricular brain hemorrhages in live sheep

J Benavides-Lara, R Manwar, LS McGuire, MT Islam… - Photoacoustics, 2023 - Elsevier
Intraventricular (IVH) and periventricular (PVH) hemorrhages in preterm neonates are
common because the periventricular blood vessels are still developing up to 36 weeks and …

Randomized multi‐angle illumination for improved linear array photoacoustic computed tomography in brain

R Manwar, JB Lara, R Prakash… - Journal of …, 2022 - Wiley Online Library
One of the key challenges in linear array transducer‐based photoacoustic computed
tomography is to image structures embedded deep within the biological tissue with limited …

Evaluation of 10 current image reconstruction algorithms for linear array photoacoustic imaging

R Prakash, R Manwar, K Avanaki - Journal of Biophotonics, 2024 - Wiley Online Library
Various reconstruction algorithms have been implemented for linear array photoacoustic
imaging systems with the goal of accurately reconstructing the strength absorbers within the …

Bilirubin–biliverdin concentration measurement using photoacoustic spectroscopic analysis for determining hemorrhage age

R Manwar, JG Gelovani, K Avanaki - Journal of Biophotonics, 2023 - Wiley Online Library
The onset of intracerebral hemorrhage and its progression toward acute brain injury have
been correlated with the concentration of unconjugated bilirubin (BR). In addition, BR has …

Development of ex vivo brain hemorrhage phantom for photoacoustic imaging

R Manwar, MT Islam, A Shoo, DA Pillers… - Journal of …, 2023 - Wiley Online Library
Brain hemorrhage, specifically intraventricular hemorrhage (IVH), is considered one of the
primary and leading causes of cerebral anomalies in neonates. Several imaging modalities …

Ultra‐widefield and high‐speed spiral laser scanning OR‐PAM: System development and characterization

M Zafar, R Manwar, LS McGuire… - Journal of …, 2023 - Wiley Online Library
Photoacoustic microscopy (PAM) is a high‐resolution imaging modality that has been mainly
implemented with small field of view applications. Here, we developed a fast PAM system …

A novel matching layer design for improving the performance of transparent ultrasound transducers

MS Osman, H Chen, K Creamer… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
Transparent ultrasound transducer (TUT) technology allows easy co-alignment of optical
and acoustic beams in the development of compact photoacoustic imaging (PAI) devices …