In this paper we address the possibility to perform imaging of two samples within the same acquisition time using coupled ceramic resonators and one transmit/receive channel. We theoretically and experimentally compare the operation of our ceramic dual-resonator probe with a wire-wound solenoid probe, which is the standard probe used in ultrahigh-field magnetic resonance microscopy. We show that due to the low-loss ceramics used to fabricate the resonators, and a favorable distribution of the electric field within the conducting sample, a dual probe, which contains two samples, achieves an SNR enhancement by a factor close to the square root of 2 compared with a solenoid optimized for one sample.
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http://dx.doi.org/10.1002/nbm.4397 | DOI Listing |
J Autism Dev Disord
December 2024
School of Information Science and Engineering, Yanshan University, Qinhuangdao, 066004, China.
Autism spectrum disorder (ASD) has been reported to exhibit altered local functional consistency. However, previous studies mainly focused on male samples and explored the temporal consistency in the ASD brain ignoring the spatial consistency. In this study, FOur-dimensional Consistency of local neural Activities (FOCA) analysis was used to investigate the sex differences of local spatiotemporal consistency of spontaneous brain activity in ASD.
View Article and Find Full Text PDFNurs Open
January 2025
Department of Nursing, Zhongshan Hospital Xiamen University, Xiamen, China.
Aim: We explored demoralisation syndrome among post-operative patients with breast cancer and its relationship with patients' body image and marital intimacy.
Design: A cross-sectional study.
Methods: In this cross-sectional study, 237 patients with breast cancer who were hospitalised in the breast surgery department of Grade A tertiary hospital in Xiamen, China from June 2022 to December 2023 and met the standards of adaxation were selected by the convenience sampling method.
Adv Sci (Weinh)
December 2024
Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
Digital PCR (dPCR) has transformed nucleic acid diagnostics by enabling the absolute quantification of rare mutations and target sequences. However, traditional dPCR detection methods, such as those involving flow cytometry and fluorescence imaging, may face challenges due to high costs, complexity, limited accuracy, and slow processing speeds. In this study, SAM-dPCR is introduced, a training-free open-source bioanalysis paradigm that offers swift and precise absolute quantification of biological samples.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
Engineering Product Development, Singapore University of Technology and Design, Singapore, 487372, Singapore.
Spatially selective imaging (SSI) involves sampling a group of pixels from different positions on an encoded object to display a decoded image. Here, SSI is achieved by using off-axis cylindrical Fresnel lens arrays to decode multiple images from an encoded print of structural color pixels. Each image is optically retrieved by separately placing different "keys" (arrays of lenses in different pseudorandom configurations) over the same encoded print, and then each image is digitally reconstructed for visualization.
View Article and Find Full Text PDFBMC Ophthalmol
December 2024
Vitreoretina Department National Eye Center Cicendo Eye Hospital, Bandung, Indonesia.
Purpose: To evaluate early response of retinal sensitivity (RS) and retinal morphology in diabetic macular edema (DME) patients after intravitreal anti-vascular endothelial growth factor (anti-VEGF) treatment.
Methods: Sixteen eyes of 12 DME patients were included in this study conducted prospectively. All eyes underwent functional and morphologic examination of the macular area using microperimetry and optical coherence tomography (OCT) before and after intravitreal anti-VEGF injection.
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