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Continuous non-invasive estimates of cerebral blood flow using electrocardiography signals: a feasibility study
Springer Science and Business Media LLC - Tập 13 - Trang 185-195 - 2023
This paper describes a potential method to detect changes in cerebral blood flow (CBF) using electrocardiography (ECG) signals, measured across scalp electrodes with reference to the same signal across the chest—a metric we term the Electrocardiography Brain Perfusion index (EBPi). We investigated the feasibility of EBPi to monitor CBF changes in response to specific tasks. Twenty healthy voluntee...... hiện toàn bộ
Color Doppler twinkling artifact: Possible mechanisms and clinical potential
Springer Science and Business Media LLC - Tập 4 - Trang 41-54 - 2014
In the color Doppler mode of ultrasonography, a rapidly changing mixture of red and blue colors referred to as ‘twinkling artifact’ (TA) may appear for a stationary hyperechogenic target. This introduces ambiguity in diagnosis as well as provides conclusive information. We reviewed the possible mechanisms, and also illustrated the clinical potential in the detection of pathological sites associate...... hiện toàn bộ
Ultrathin silk nanofiber–carbon nanotube skin tattoos for wirelessly triggered and temperature feedbacked transdermal drug delivery
Springer Science and Business Media LLC - - 2024
Transdermal drug delivery has emerged as an alternative to conventional drug delivery systems as it enables painless and convenient drug administration. However, next-generation healthcare systems need to facilitate “on-demand” delivery operations and should be highly efficient to penetrate the physiological barriers in the skin. Here, we report an ultrathin dye-loaded epidermal tattoo (UDET) that...... hiện toàn bộ
A multimodal framework based on deep belief network for human locomotion intent prediction
Springer Science and Business Media LLC -
Photoacoustic microscopy: principles and biomedical applications
Springer Science and Business Media LLC - Tập 8 - Trang 203-213 - 2018
Photoacoustic microscopy (PAM) has become an increasingly popular technology for biomedical applications, providing anatomical, functional, and molecular information. In this concise review, we first introduce the basic principles and typical system designs of PAM, including optical-resolution PAM and acoustic-resolution PAM. The major imaging characteristics of PAM, i.e. spatial resolutions, pene...... hiện toàn bộ
Relative wavelet energy and wavelet entropy based epileptic brain signals classification
Springer Science and Business Media LLC - Tập 2 - Trang 147-157 - 2012
Manual analysis of EEG signals by an expert is very much time consuming due to the long length of EEG recordings. The suitable computerized analysis is essentially required to differentiate among the normal, interictal and ictal (epileptic) EEGs. In the present work the EEG signals are decomposed into different sub-bands using discrete wavelet transform (DWT) to obtain the detail and the approxima...... hiện toàn bộ
Non-contact oxygen saturation monitoring for wound healing process using dual-wavelength simultaneous acquisition imaging system
Springer Science and Business Media LLC - Tập 13 - Trang 455-463 - 2023
Here we report the fabrication of a noncontact pulse oximeter system based on a dual-wavelength imaging system and its oxygen saturation monitoring performance during wound healing. The dual-wavelength imaging system consists of 660 nm and 940 nm light-emitting diodes and a multi-spectral camera that simultaneously accepts visible and near-infrared images. Using the proposed system, images were ac...... hiện toàn bộ
A Simulation study on iterative shear velocity image reconstruction for ultrasound transient elastography
Springer Science and Business Media LLC - - 2012
Helical structures of unnatural peptides for biological applications
Springer Science and Business Media LLC - Tập 3 - Trang 226-231 - 2014
Many important biological functions involve the recognition of helical domains of natural proteins. A number of strategies have been developed to mimic natural helices in proteins. Unnatural peptides are constructed with incorporation of artificial building blocks other than α-amino acid residues, and could adopt stable helical conformations. These nontraditional helical oligomers have been explor...... hiện toàn bộ
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