Results 21 to 30 of about 20,149 (224)
Passive element enriched photoacoustic computed tomography (PER PACT) for simultaneous imaging of acoustic propagation properties and light absorption\ud [PDF]
, 2011 We present a ‘hybrid’ imaging approach which can image both light absorption properties and acoustic transmission properties of an object in a two-dimensional slice using a computed tomography (CT) photoacoustic imager.
Hespen, J.C.G. van +8 more
core +15 more sources
Towards non-contact photoacoustic imaging [review]
Photoacoustics, 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]
Scientific 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
Grueneisen Relaxation Photoacoustic Microscopy [PDF]
Physical 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
Automated Laser-Fiber Coupling Module for Optical-Resolution Photoacoustic Microscopy
Sensors, 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
Slow-sound photoacoustic microscopy [PDF]
Applied 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 +3 more sources
Double-illumination photoacoustic microscopy [PDF]
Optics Letters, 2012 Recent developments of optical-resolution photoacoustic microscopy (OR-PAM) have improved its spatial resolution and imaging speed. However, the penetration depth of OR-PAM is still limited to ~1 mm in tissue, owing to the strong tissue scattering. Here, we have developed double-illumination PAM (DI-PAM), which illuminates the sample from both top and ...
Yao, Junjie +5 more
openaire +3 more sources
Acta 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
Single-shot linear dichroism optical-resolution photoacoustic microscopy
Photoacoustics, 2019 Dichroism is a material property that causes anisotropic light-matter interactions for different optical polarizations. Dichroism relates to molecular types and material morphology and thus can be used to distinguish different dichroic tissues.
Yingying Zhou +5 more
doaj +1 more source
Real-time delay-multiply-and-sum beamforming with coherence factor for in vivo clinical photoacoustic imaging of humans [PDF]
, 2019 In the clinical photoacoustic (PA) imaging, ultrasound (US) array transducers are typically used to provide B-mode images in real-time. To form a B-mode image, delay-and-sum (DAS) beamforming algorithm is the most commonly used algorithm because of its ...
Choi, Wonseok +5 more
core +1 more source