Results 41 to 50 of about 7,514 (193)
Silicon photonic acoustic detector (SPADE) using a silicon nitride microring resonator
Photoacoustics, 2023 Silicon photonics is an emerging platform for acoustic sensing, offering exceptional miniaturization and sensitivity. While efforts have focused on silicon-based resonators, silicon nitride resonators can potentially achieve higher Q-factors, further ...
Michael Nagli +7 more
doaj +1 more source
Visual Quality Enhancement in Optoacoustic Tomography using Active Contour Segmentation Priors
, 2016 Segmentation of biomedical images is essential for studying and characterizing anatomical structures, detection and evaluation of pathological tissues.
Deán-Ben, Xosé Luís +2 more
core +1 more source
Sensors, 2013 This paper comprehensively reviews the emerging topic of optoacoustic imaging from the image reconstruction and quantification perspective. Optoacoustic imaging combines highly attractive features, including rich contrast and high versatility in sensing ...
Daniel Razansky, Christian Lutzweiler
doaj +1 more source
On the Adjoint Operator in Photoacoustic Tomography [PDF]
, 2016 Photoacoustic Tomography (PAT) is an emerging biomedical "imaging from coupled physics" technique, in which the image contrast is due to optical absorption, but the information is carried to the surface of the tissue as ultrasound pulses. Many algorithms
Arridge, Simon R. +4 more
core +2 more sources
Optoacoustic image formation approaches—a clinical perspective [PDF]
Physics in Medicine & Biology, 2019 Clinical translation of optoacoustic imaging is fostered by the rapid technical advances in imaging performance as well as the growing number of clinicians recognizing the immense diagnostic potential of this technology. Clinical optoacoustic systems are available in multiple configurations, including hand-held and endoscopic probes as well as raster ...
Deán-Ben, Xosé Luís, Razansky, Daniel
openaire +3 more sources
Cylindrical illumination with angular coupling for whole-prostate photoacoustic tomography [PDF]
, 2019 Current diagnosis of prostate cancer relies on histological analysis of tissue samples acquired by biopsy, which could benefit from real-time identification of suspicious lesions.
Bungart, Brittani +9 more
core +1 more source
Advanced Science, EarlyView.Mid‐infrared optoacoustic microscopy (MiROM) acquires lipid‐ and protein‐ associated vibrational contrast in intact fat tissue without dyes, preserving native tissue architecture. Through lateral and axial segmentation, MiROM tracks intrinsic intracellular changes during postnatal remodeling. A quantitative spatial analysis tool (Q‐SAT) maps white‐ and
Myeongseop Kim +7 more
wiley +1 more source
Towards Quantitative Evaluation of Tissue Absorption Coefficients Using Light Fluence Correction in Optoacoustic Tomography. [PDF]
, 2016 Optoacoustic tomography is a fast developing imaging modality, combining the high contrast available from optical excitation of tissue with the high resolution and penetration depth of ultrasound detection.
Bohndiek, Sarah E +5 more
core +1 more source
Advanced Science, EarlyView.We developed an implantable dual‐drug depot using GelMA for bone metastasis treatment, co‐delivering MSA‐2 and αB7‐H3‐loaded CaCO3 microparticles. Sustained release from GelMA scaffold enables MSA‐2 to activate STING signaling and enhance T‐cell infiltration and activation, while sequentially released αB7‐H3 blocks MSA‐2‐induced B7‐H3 upregulation ...
Qijun Lin +10 more
wiley +1 more source
Phototrophic purple bacteria as optoacoustic in vivo reporters of macrophage activity
Nature Communications, 2019 Current optoacoustic probes for cancer imaging have limitations including background noise, long-term toxicity and scarce imaging depth in living tissue.
Lena Peters +8 more
doaj +1 more source