Results 41 to 50 of about 32,958 (224)
An ultrasonography-based approach for optical diagnostics and phototherapy treatment strategies [PDF]
arXiv, 2022 Currently, diagnostic medicine uses a multitude of tools ranging from ionising radiation to histology analysis. With advances in piezoelectric crystal technology, high-frequency ultrasound imaging has developed to achieve comparatively high resolution without the drawbacks of ionising radiation.
arxiv
Current Advances in Computational Lung Ultrasound Imaging: A Review [PDF]
arXiv, 2021 In the field of biomedical imaging, ultrasonography has become increasingly widespread, and an important auxiliary diagnostic tool with unique advantages, such as being non-ionising and often portable. This article reviews the state-of-the-art in medical ultrasound image computing and in particular its application in the examination of the lungs. First,
arxiv
Efficient asymmetric transmission of elastic waves in thin plates with lossless metasurfaces [PDF]
Phys. Rev. Applied 14, 054029 (2020), 2020 Requiring neither active components nor complex designs, we propose and experimentally demonstrate a generic framework for undistorted asymmetric elastic-wave transmission in a thin plate just using a layer of lossless metasurface. The asymmetric transmission stems from the uneven diffraction of +1 and -1 orders on opposite sides of the metasurface ...
arxiv +1 more source
Archives of Endocrinology and Metabolism, 2016 Objective To evaluate the efficacy and safety of percutaneous ethanol injection (PEI) in reducing the volume of cystic and mixed thyroid nodules. Materials and methods A total of 36 patients with nodules treated with PEI and 13 individuals who declined ...
Mari Cassol Ferreira +2 more
doaj +1 more source
Ultrasound-guided supraorbital radiofrequency ablation for V1 postherpetic neuralgia
Indian Journal of Pain, 2021 Postherpetic neuralgia (PHN) affecting the first division of the trigeminal nerve (TrN) (V1) is a difficult to manage condition, characterized by neuropathic symptoms such as burning sensation, allodynia, and hyperalgesia that continues even after the ...
Victor M Silva-Ortiz +5 more
doaj +1 more source
Circulating tumor cells: advancing personalized therapy in small cell lung cancer patients
Molecular Oncology, EarlyView.Small cell lung cancer (SCLC) is an aggressive form of lung cancer that spreads rapidly to secondary sites such as the brain and liver. Cancer cells circulating in the blood, “circulating tumor cells” (CTCs), have demonstrated prognostic value in SCLC, and evaluating biomarkers on CTCs could guide treatment decisions such as for PARP inhibitors ...
Prajwol Shrestha +6 more
wiley +1 more source
Molecular Oncology, EarlyView.This study demonstrates that KRAS and GNAS mutations are more prevalent in patients with resected intraductal papillary mucinous neoplasms (IPMN) compared to those under clinical surveillance. GNAS mutations significantly differ between the two patient cohorts, indicating that their absence may serve as a potential biomarker to support conservative ...
Christine Nitschke +12 more
wiley +1 more source
Sub-micron silicon-on-insulator resonator for ultrasound detection [PDF]
, 2019 Point-like broadband ultrasound detection can significantly increase the resolution of ultrasonography and optoacoustic (photoacoustic) imaging, yet current ultrasound detectors cannot be miniaturised sufficiently. Piezoelectric transducers lose sensitivity quadratically with size reduction, while optical micro-ring resonators and Fabry-P\'erot etalons
arxiv +1 more source
Molecular Oncology, EarlyView.The authors analyzed the spatial distributions of gene and metabolite profiles in cervical cancer through spatial transcriptomic and spatially resolved metabolomic techniques. Pivotal genes and metabolites within these cases were then identified and validated.
Lixiu Xu +3 more
wiley +1 more source
World Journal of Surgical Oncology, 2019 Background Studies focusing on the treatment effectiveness of endoscopic ultrasonography (EUS)-guided laser ablation (LA) for hepatic tumours or the technical differences from percutaneous ultrasonography (US)-guided LA are lacking. The objective of this
Weilu Chai +5 more
doaj +1 more source