790 hasil
Menampilkan 1–20 · 0,40 detik · RSS
Photoacoustics
Scopus
ISSN 2213-5979 · Elsevier · 790 artikel di indeks
-
Artikel Jurnal
Stochastic numerical head phantoms to enable virtual imaging studies of transcranial photoacoustic computed tomography
Transcranial photoacoustic computed tomography (PACT) is an emerging neuroimaging modality, but skull-induced aberrations can result in severe image artifacts if not compensated for during image reconstruction. The development of advanced image reconstruction methods for transcranial PACT is…
-
Artikel Jurnal
Optoacoustic brain imaging: A systematic review and field mapping
Optoacoustic (OA) imaging has emerged as a powerful hybrid modality for investigating brain structure and function by combining optical absorption contrast with ultrasonic detection. This approach enables high-resolution imaging beyond the optical diffusion limit while preserving the strong…
-
Artikel Jurnal
In vivo optical-resolution optoacoustic flow cytometry in the oral mucosa using a transparent silicon-photonics acoustic detector (SPADE)
Complete blood counts are central to clinical practice but require invasive sampling and centralized laboratory analysis. Optical-resolution photoacoustic microscopy provides intrinsic specificity to red blood cells (RBCs) through hemoglobin absorption. However, conventional implementations…
-
Artikel Jurnal
Simultaneous mesoscopic imaging of neural activity and hemodynamics reveals anesthetic modulation of neurovascular responses
Anesthesia substantially alters neural activity and vascular tone, yet its state-dependent modulation of cortical neurovascular coupling (NVC) remains incompletely characterized. Here, using an established multimodal optical imaging platform that synchronizes wide-field fluorescence microscopy…
-
Artikel Jurnal
Blood-mimicking dye phantoms for evaluating photoacoustic oximetry accuracy
Many proposed clinical applications of photoacoustic imaging (PAI) rely on relative or absolute measurements of blood oxygen saturation (sO2), and evaluation of oximetry measurement accuracy is crucial for assessing device performance. Available bench test methods use phantoms connected to blood…
-
Artikel Jurnal
Attention-driven complementary information fusion network for sparse photoacoustic image reconstruction
Photoacoustic tomography (PAT) is an emerging biomedical imaging modality that uniquely combines high spatial resolution with deep tissue penetration in a non-invasive manner, holding significant promise for diverse applications. However, image reconstruction quality in PAT severely degrades under…
-
Artikel Jurnal
Generative adversarial networks-enhanced quasi-square wave modulated photoacoustic spectroscopy: A highly sensitive NH3 detection method under strong background noise
We present a photoacoustic spectroscopy reconstruction generative adversarial network (PASR-GAN), which boosts the NH3 detection performance of the photoacoustic spectroscopy sensor through collaborative optimization of the light modulation mode, especially under strong background noise. Instead of…
-
Artikel Jurnal
Ultrafast subwavelength CVD-graphene nanoheater for the generation of broadband photoacoustic waves
Efficient operation of light-to-pressure transducers and flexible fabrication on demand are key factors for the use of photoacoustic devices in various biomedical disciplines. Graphene layers can be grown at wafer scale and transferred to any surface geometry, providing a versatile approach for the…
-
Artikel Jurnal
Vascular graph network for ovarian lesion classification using optical-resolution photoacoustic microscopy
Diagnosing ovarian lesions is challenging because of their heterogeneous clinical presentations. Some benign ovarian conditions, such as endometriosis, can have features that mimic cancer. We use optical-resolution photoacoustic microscopy (OR-PAM) to study the differences in ovarian vasculature…
-
Artikel Jurnal
Photoacoustic imaging: An emerging tool for intraoperative margin assessment in breast-conserving surgery
Photoacoustic Imaging (PAI) synergizes light's optical contrast with ultrasound's penetration depth via the photoacoustic effect. Breast cancer remains a global challenge, particular demanding precise intraoperative tumor demarcation during breast-conserving surgery (BCS). PAI has the potential to…
-
Artikel Jurnal
Dual-comb photoacoustic and photothermal spectroscopy: A comprehensive review
Dual-comb spectroscopy is one of the most powerful techniques for multispecies trace-gas sensing, attracting growing attention in both theoretical and experimental research. Firstly demonstrated and usually applied with direct absorption spectroscopy schemes, the dual-comb approach has been…
-
Artikel Jurnal
Mapping glucose-induced hemodynamics in white fat depots with label-free optoacoustics
Subcutaneous adipose tissue (SAT) hemodynamics is an indicator of cardiometabolic health. Herein, we demonstrate a non-invasive approach for imaging SAT hemodynamics in humans using multispectral optoacoustic tomography (MSOT). We evaluated different SAT depots in individuals with low (< 24 kg/m²)…
-
Artikel Jurnal
Detecting parts-per-billion carbon monoxide with an ultra-enhanced near-infrared photoacoustic sensor
An ultra-enhanced near-infrared (NIR) photoacoustic gas sensor was developed by integrating three enhancing techniques: (a) boosting the excitation power up to 2 W via a custom-built large-mode erbium doped fiber amplifier (EDFA), (b) exploiting the acoustic resonance amplification of a hyperbolic…
-
Artikel Jurnal
Design and characterisation of intervertebral disc mimicking phantoms for photoacoustic imaging
Photoacoustics has gained momentum as a new medical imaging technique owing to its ability to benefit from good optical contrast and acoustic resolution. To ease transfer into clinical settings and validate the algorithms, calibrated tissue-mimicking materials (TMM) are required. This paper…
-
Artikel Jurnal
Nine-grid segmentation strategy for photoacoustic imaging of microcirculation oxygenation dynamics in the thenar muscle
Microcirculatory dysfunction is central to the pathophysiology of diseases such as sepsis, diabetes, and cardiovascular disorders. While clinical tools like near-infrared spectroscopy (NIRS) and transcutaneous oxygen monitoring (TcPO₂) offer global oxygenation insights, they lack the spatial…
-
Artikel Jurnal
Longitudinal three-dimensional photoacoustic imaging reveals hyperoxic perilesional microvasculature associated with keloid recurrence
Keloids undergo repeated cycles of regression and recurrence; however, vascular dynamics associated with recurrence remain poorly understood. In this prospective time-series study, we investigated microvascular changes in keloids using longitudinal three-dimensional photoacoustic imaging combined…
-
Artikel Jurnal
Effective point spread function modeling of photoacoustic remote sensing microscopy towards resolution enhancement
Photoacoustic remote sensing (PARS) microscopy, as an all-optical non-contact imaging modality, has demonstrated considerable potential in biomedical applications. However, current studies on PARS resolution remain limited to experimental characterization, hindering the systematic analysis and…