Results 61 to 70 of about 7,514 (193)

Timing Is Everything: How Subtle Timing Changes in MRI Echo Planar Imaging Can Significantly Alter Mechanical Vibrations and Sound Level

Magnetic Resonance in Medicine, Volume 95, Issue 6, Page 3116-3130, June 2026.
ABSTRACT Purpose Echo‐Planar Imaging (EPI) is central to fMRI, diffusion MRI, and many dynamic clinical applications, yet rapid gradient switching induces strong mechanical vibrations, generates acoustic noise, and contributes to ghosting artifacts—effects that intensify at ultra‐high fields.
Amir Seginer, Alexander Bratch, Shahar Goren, Edna Furman‐Haran, Noam Harel, Essa Yacoub, Rita Schmidt   +6 more
wiley   +1 more source

Photoacoustic temperature imaging based on multi-wavelength excitation

Photoacoustics, 2019
Building further upon the high spatial resolution offered by ultrasonic imaging and the high optical contrast yielded by laser excitation of photoacoustic imaging, and exploiting the temperature dependence of photoacoustic signal amplitudes, this paper ...
Lei Meng, Olivier Deschaume, Lionel Larbanoix, Eduard Fron, Carmen Bartic, Sophie Laurent, Mark Van der Auweraer, Christ Glorieux   +7 more
doaj   +1 more source

Investigation of iterative image reconstruction in three-dimensional optoacoustic tomography

, 2012
Iterative image reconstruction algorithms for optoacoustic tomography (OAT), also known as photoacoustic tomography, have the ability to improve image quality over analytic algorithms due to their ability to incorporate accurate models of the imaging ...
Alexander A Oraevsky, Barrett H H, Elbau P, Kun Wang, Kunyansky L A, Mark A Anastasio, Pan X, Richard Su, Wang L V, Wernick M N   +9 more
core   +1 more source

Optoacoustic Neuromodulator by In Situ Photothermal Curing of Polydimethylsiloxane

Advanced Optical Materials, Volume 14, Issue 16, 24 April 2026.
Photoacoustics provides a powerful tool for generating miniaturized and patterned ultrasound field. Here, we report a novel, highly versatile method for fabricating optoacoustic emitters via an in situ photothermal curing process of PDMS. This technique enables high‐precision deposition across diverse platforms, including programmed flat substrates and
Guo Chen, Michael Marar, Deming Li, Zhuqin Xu, Biwen Gao, Meng Zhang, Wai Yuen Cheng, Feiyuan Yu, Carolyn Marar, Ji‐Xin Cheng, Chen Yang   +10 more
wiley   +1 more source

Photo-acoustic tomography in a rotating setting

, 2019
Photo-acoustic tomography is a coupled-physics (hybrid) medical imaging modality that aims to reconstruct optical parameters in biological tissues from ultrasound measurements. As propagating light gets partially absorbed, the resulting thermal expansion
Bal, Guillaume, Kirkeby, Adrian
core   +1 more source

Cell‐in‐Shell Metacells in Single‐Cell Nanoencapsulation

ChemPlusChem, Volume 91, Issue 4, April 2026.
Metacells represent the next generation of living cell‐in‐shell architectures, chemically engineered through single‐cell nanoencapsulation and characterized by three functional hallmarks: reconfigurability, loadability, and motility. Single‐cell nanoencapsulation (SCNE) enables the direct integration of synthetic materials with living cells, forming ...
Duc Tai Nguyen, Nayoung Kim, Sang Yeong Han, Hyunwoo Choi, Insung S. Choi   +4 more
wiley   +1 more source

Simultaneous control of volumetric light distribution through turbid media using real-time three-dimensional optoacoustic feedback

, 2015
Focusing light through turbid media presents a highly fascinating challenge in modern biophotonics. The unique capability of optoacoustics for high resolution imaging of light absorption contrast in deep tissues can provide a natural and efficient ...
Deán-Ben, X. Luís, Estrada, Héctor, Razansky, Daniel   +2 more
core   +1 more source

Amplification of Light‐Ultrasound Interaction in a Pi‐Shifted Fiber Bragg Grating for Enhanced Ultrasonic Sensitivity

Laser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
By precisely engineering the geometry of a fiber‐based optical resonator, the interaction between confined light and external ultrasound waves is significantly amplified without sacrificing light confinement, boosting the ultrasound detection sensitivity beyond 0.5 mPa/√Hz.
Tai‐Anh La, Rami Shnaiderman, Vasilis Ntziachristos   +2 more
wiley   +1 more source

Bacterial Extracellular Vesicles in Biomedical Research and Clinical Translation

Microbial Biotechnology, Volume 19, Issue 4, April 2026.
Bacterial membrane vesicle biomedical applications. ABSTRACT Bacterial Extracellular Vesicles (bEVs) are lipid (single‐ or double‐bilayer) nanostructures secreted by virtually all bacteria that play fundamental roles in intercellular communication and have emerged as powerful, multifunctional tools in biomedicine. Their intrinsic ability to encapsulate
Alejandro Arce‐Rodríguez, Javier De la Peña Noya, José Manuel Borrero‐de Acuña   +2 more
wiley   +1 more source

Model-Based Optoacoustic Tomography Image Reconstruction With Non-local and Sparsity Regularizations

IEEE Access, 2019
Optoacoustic tomography (OAT) is an emerging imaging modality with ultrasonic imaging depth and optical contrast. The reconstruction of optoacoustic image is to recover the initial acoustic pressure distribution of the object from a set of ultrasound ...
Xipan Li, Li Qi, Shuangyang Zhang, Shixian Huang, Jian Wu, Lijun Lu, Yanqiu Feng, Qianjin Feng, Wufan Chen   +8 more
doaj   +1 more source