Zone-Shrinking Fresnel Zone Travel-Time Tomography for Sound Speed Reconstruction in Breast USCT [PDF]
Sensors, 2020 Many studies have been carried out on ultrasound computed tomography (USCT) for its potential application in breast imaging. The sound speed (SS) image modality in USCT can help doctors diagnose the breast cancer, as the tumor usually has a higher sound ...
Xiaoyue Fang +8 more
doaj +2 more sources
Clinical value of endoscopic ultrasound sound speed in differential diagnosis of pancreatic solid lesion and prognosis of pancreatic cancer [PDF]
Cancer MedicineBackground Differential diagnosis of pancreatic solid lesion (PSL) and prognosis of pancreatic cancer (PC) is a clinical challenge. We aimed to explore the differential diagnostic value of sound speed (SS) obtained from endoscopic ultrasonography (EUS ...
Jianing Qiu +7 more
doaj +2 more sources
Carotid atherosclerotic plaque characterisation by measurement of ultrasound sound speed in vitro at high frequency, 20 MHz [PDF]
, 2010 PhDThe first part of the study was to characterise the acoustic properties of an IEC agar-based tissue mimicking material (TMM) at ultrasound frequencies centred around 20 MHz.
Brewin, Mark Paul
core +4 more sources
A Molecularly Defined Midbrain Circuit Mechanism for Sound‐Driven Defensive Behavior and Anxiety [PDF]
Advanced Science, EarlyView.Schematic diagram showing the Cbln2+ ICx–dPAG circuit for sound‐driven defensive and anxiety‐like behaviors. ABSTRACT The innate defense behaviors in response to threatening sounds play a fundamental role in survival. However, the neural circuits that detect threat‐relevant auditory cues and transform them into defensive behaviors remain poorly defined.
Jie Cao +8 more
wiley +2 more sources
Вестник урологии, 2021 Introduction. In the modern world, training on medical simulators is actively used in the training of specialists. To improve the skill of puncture of the cavity system of the kidney, many simulators have been created, from biological ones to virtual ...
N. K. Gadzhiev +8 more
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Effects of reference sound speed on underwater acoustic direction-of-arrival estimation with horizontal plane array [PDF]
JASA Express LettersDirection-of-arrival (DOA) estimation of an underwater acoustic target is usually dependent on the selection of reference sound speed. For a horizontal line array, severe error of DOA estimation is induced when reference sound speed diverges from phase ...
Feitong Chen +6 more
doaj +1 more source
The Dark Energy Properties of the Dirac–Born–Infeld Action
Entropy, 2012 Introducing a new potential, we deduce a general Lagrangian for Dirac–Born– Infeld (DBI) inflation, in which the determinant of the induced metric naturally includes the kinetic energy and the potential energy.
Yongchang Huang +2 more
doaj +1 more source
Earth and Space Science, 2023 Due to the blockage of seawater, seafloor displacement cannot be directly measured by space geodesy. The combination of Global Navigation Satellite Systems‐acoustic ranging (GNSS‐A) has been used to overcome the electromagnetic barrier, so that a GNSS ...
Surui Xie +3 more
doaj +1 more source
Verification of mathematical model of transonic axial compressor stage [PDF]
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"The research presents the results of verification and validation of the mathematical model of the flow path transonic model NASA Stage 37 axial compressor using the data of the experiment conducted by NASA in the 1970s.
A. S. Zolotukhin +4 more
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A New Compressional Wave Speed Inversion Method Based on Granularity Parameters
IEEE Access, 2019 How to improve the prediction accuracy of compressional wave speed has always been one of the basic research subjects in geoacoustics study field. Due to the stability of granularity, whether in the laboratory or in the seabed environment, the regression
Jingqiang Wang +5 more
doaj +1 more source