Results 11 to 20 of about 2,930 (223)

Photoacoustic microscopy [PDF]

open access: yesLaser & Photonics Reviews, 2013
AbstractPhotoacoustic microscopy (PAM) is a hybridin vivoimaging technique that acoustically detects optical contrast via the photoacoustic effect. Unlike pure optical microscopic techniques, PAM takes advantage of the weak acoustic scattering in tissue and thus breaks through the optical diffusion limit (∼1 mm in soft tissue).
Yao, Junjie, Wang, Lihong V.
openaire   +3 more sources

The Feasibility of Dynamic Musculoskeletal Function Analysis of the Vastus Lateralis in Endurance Runners Using Continuous, Hands-Free Ultrasound

open access: yesApplied Sciences, 2021
Dynamic imaging of the skeletal muscles used to be strenuous and often impossible to perform manually. Accordingly, long-term dynamic musculoskeletal imaging has not been performed. The feasibility of long-term dynamic musculoskeletal functional analysis
Marloes Sjoerdsma   +5 more
doaj   +1 more source

Photoacoustic endoscopy [PDF]

open access: yesOptics Letters, 2009
We have developed photoacoustic endoscopy with a miniaturized imaging probe. A light-guiding optical fiber, an ultrasonic sensor, and a mechanical scanning unit are integrated to enable circumferential sector scanning, which produces B-scan images. Biological tissues, including the gastrointestinal tract of a rat, have been imaged ex vivo or in situ.
Yang, Joon-Mo   +5 more
openaire   +4 more sources

Non-Invasive Evaluation of Acute Effects of Tubulin Binding Agents: A Review of Imaging Vascular Disruption in Tumors

open access: yesMolecules, 2021
Tumor vasculature proliferates rapidly, generally lacks pericyte coverage, and is uniquely fragile making it an attractive therapeutic target. A subset of small-molecule tubulin binding agents cause disaggregation of the endothelial cytoskeleton leading ...
Li Liu   +7 more
doaj   +1 more source

New Frontiers in Diagnosis and Therapy of Circulating Tumor Markers in Cerebrospinal Fluid In Vitro and In Vivo

open access: yesCells, 2019
One of the greatest challenges in neuro-oncology is diagnosis and therapy (theranostics) of leptomeningeal metastasis (LM), brain metastasis (BM) and brain tumors (BT), which are associated with poor prognosis in patients.
Olga A. Sindeeva   +10 more
doaj   +1 more source

Photoacoustics in a snap [PDF]

open access: yesNature Methods, 2020
Photoacoustic topography through an ergodic relay increases imaging throughput and opens a path toward wearable devices.
openaire   +2 more sources

49th Winter School on Wave and Quantum Acoustics XLVIIIth Winter School on Environmental Acoustics and Vibroacoustics Szczyrk, Poland, February 24–27, 2020

open access: yesArchives of Acoustics, 2020
49th Winter School on Wave and Quantum Acoustics constituted platforms for sharing the results and achievements obtained in different branches of physical acoustics, as molecular acoustics, quantum acoustics, acousto-optics, magnetoacoustics ...
Dariusz Bismor
doaj   +1 more source

Annular Fiber Probe for Interstitial Illumination in Photoacoustic Guidance of Radiofrequency Ablation

open access: yesSensors, 2021
Unresectable liver tumors are commonly treated with percutaneous radiofrequency ablation (RFA). However, this technique is associated with high recurrence rates due to incomplete tumor ablation. Accurate image guidance of the RFA procedure contributes to
Hindrik Kruit   +3 more
doaj   +1 more source

Improving PMUT Receive Sensitivity via DC Bias and Piezoelectric Composition

open access: yesSensors, 2022
The receive sensitivity of lead zirconate titanate (PZT) piezoelectric micromachined ultrasound transducers (PMUTs) was improved by applying a DC bias during operation.
Christopher Cheng   +6 more
doaj   +1 more source

Waveform engineering analysis of photoacoustic radar chirp parameters for spatial resolution and SNR optimization

open access: yesPhotoacoustics, 2019
Recent developments in photoacoustics have witnessed the implementation of a radar matched-filtering methodology into the continuous wave photoacoustic modality. The main merit of using matched filtering in continuous photoacoustics is the improvement in
Zuwen Sun   +2 more
doaj   +1 more source

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