Results 31 to 40 of about 1,180,081 (224)

Dual-wavelength UV-visible metalens for multispectral photoacoustic microscopy: A simulation study

open access: yesPhotoacoustics, 2023
Photoacoustic microscopy is advancing with research on utilizing ultraviolet and visible light. Dual-wavelength approaches are sought for observing DNA/RNA- and vascular-related disorders.
Aleksandr Barulin   +3 more
doaj   +1 more source

Progress of photoacoustic imaging combined with targeted photoacoustic contrast agents in tumor molecular imaging

open access: yesFrontiers in Chemistry, 2022
Molecular imaging visualizes, characterizes, and measures biological processes at the molecular and cellular level. In oncology, molecular imaging is an important technology to guide integrated and precise diagnosis and treatment.
Yiwen Zheng, Mengyao Liu, Lixin Jiang
doaj   +1 more source

Advanced Spectroscopic Studies into the Degradation of Polyester Melamine Coil Coatings before and after Exposure to Natural and Accelerated Weathering Tests [PDF]

open access: yes, 2009
PhDPolymeric coating research requires advanced spectroscopic techniques to perform more efficient and detailed analysis in order to improve knowledge on the component distribution and the degradation of functional groups in the coating.
Zhang, Wanrui
core   +3 more sources

Towards non-contact photoacoustic imaging [review]

open access: yesPhotoacoustics, 2020
Photoacoustic imaging (PAI) takes advantage of both optical and ultrasound imaging properties to visualize optical absorption with high resolution and contrast.
Zohreh Hosseinaee   +3 more
doaj   +1 more source

Handheld Photoacoustic Microscopy Probe [PDF]

open access: yesScientific Reports, 2017
AbstractOptical resolution photoacoustic microscopy (OR-PAM) is a non-invasive, label-free method of in vivo imaging with microscopic resolution and high optical contrast. Based on intrinsic contrasts, OR-PAM has expanded to include in vivo vessel imaging, flow cytometry, physiological parameter analysis, and single-cell characterization.
Kyungjin Park   +5 more
openaire   +3 more sources

Slow-sound photoacoustic microscopy [PDF]

open access: yesApplied Physics Letters, 2013
We propose to enhance the axial resolution of photoacoustic microscopy (PAM) by reducing the speed of sound within the imaging region of interest. With silicone oil immersion, we have achieved a finest axial resolution of 5.8 μm for PAM, as validated by phantom experiments.
Zhang, Chi   +3 more
openaire   +4 more sources

Grueneisen Relaxation Photoacoustic Microscopy [PDF]

open access: yesPhysical Review Letters, 2014
The temperature-dependent property of the Grueneisen parameter has been employed in photoacoustic imaging mainly to measure tissue temperature. Here we explore this property using a different approach and develop Grueneisen relaxation photoacoustic microscopy (GR-PAM), a technique that images nonradiative absorption with confocal optical resolution. GR-
Wang, Lidai, Zhang, Chi, Wang, Lihong V.
openaire   +3 more sources

Functional photoacoustic microscopy of pH [PDF]

open access: yesSPIE Proceedings, 2011
pH is a tightly regulated indicator of metabolic activity. In mammalian systems, an imbalance of pH regulation may result from or result in serious illness. In this paper, we report photoacoustic microscopy (PAM) of a commercially available pH-sensitive fluorescent dye (SNARF-5F carboxylic acid) in tissue phantoms.
Chatni, Muhammad Rameez   +5 more
openaire   +6 more sources

Automated Laser-Fiber Coupling Module for Optical-Resolution Photoacoustic Microscopy

open access: yesSensors, 2023
Photoacoustic imaging has emerged as a promising biomedical imaging technique that enables visualization of the optical absorption characteristics of biological tissues in vivo.
Seongyi Han   +5 more
doaj   +1 more source

Differentiation Between Benign and Malignant Pigmented Skin Tumours Using Bedside Diagnostic Imaging Technologies: A Pilot Study

open access: yesActa Dermato-Venereologica, 2022
Rapid diagnosis of suspicious pigmented skin lesions is imperative; however, current bedside skin imaging technologies are either limited in penetration depth or resolution.
Terese von Knorring   +8 more
doaj   +1 more source

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