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very-high-frequency ultrasound

Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner

Anterior segment biometry using ultrasound biomicroscopy and the Artemis-2 very high frequency ultrasound scanner

... a high-frequency (50 MHz) ultrasound beam to measure various ocular ...a high enough signal-to-noise ratio between the interface echo complex and the surround- ing ...

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Agreement between Orbscan II, VuMAX UBM and Artemis-2 very-high frequency ultrasound scanner for measurement of anterior chamber depth

Agreement between Orbscan II, VuMAX UBM and Artemis-2 very-high frequency ultrasound scanner for measurement of anterior chamber depth

... Previous studies have shown variations in the mean ACD value obtained by different instruments, which may be due to differences in sample size, study popula- tion [7,23,29,30] and refractive error [7,23,29,31]. Table 3 ...

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The use of high-frequency ultrasound imaging and biofluorescence for in vivoevaluation of gene therapy vectors

The use of high-frequency ultrasound imaging and biofluorescence for in vivoevaluation of gene therapy vectors

... and high vascularity (using contrast agents) was also ...for very small xenografts, orthotopic models to in transgenic mice such as the Apc Min/+ mouse, where callipers cannot access the ...

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High Frequency Ultrasound in Determining the Causes of Acute Shoulder Joint Pain

High Frequency Ultrasound in Determining the Causes of Acute Shoulder Joint Pain

... be very sensible for diagnosing calcific tendinitis and may be employed to pilot aspiration of calcific ...is very precise in diagnosing biceps tendon subluxation, dislocation, and rupture, although it was ...

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Exposure to High-Frequency Sound and Ultrasound in Public Places: Examples from Zurich, Switzerland

Exposure to High-Frequency Sound and Ultrasound in Public Places: Examples from Zurich, Switzerland

... a frequency of 14 kHz at 20 dB above the individual hearing threshold (20 dB SL) was used to compare the brain responses evoked by the ultrasound with a well-known brain response in the audible ...

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Comparison of high-resolution Scheimpflug and high-frequency ultrasound biomicroscopy to anterior-segment OCT corneal thickness measurements

Comparison of high-resolution Scheimpflug and high-frequency ultrasound biomicroscopy to anterior-segment OCT corneal thickness measurements

... With very few exceptions, in which AS-OCT yielded larger readings (up to + 20 µ m) than the Oculyzer, the trend was that the AS-OCT measurements were smaller than the corresponding Oculyzer readings by a mean of - ...

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Crossed SMPS MOSFET-based protection circuit for high frequency ultrasound transceivers and transducers

Crossed SMPS MOSFET-based protection circuit for high frequency ultrasound transceivers and transducers

... to the lower IL of the expander and limiter ( − 0.75 and − 0.17 dB at 60 MHz). The − 6 dB bandwidth of echo spectrum generated by the transducer using our circuit is slightly wider (5.7%) than that of the commercial ...

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Repeatability and interobserver reproducibility of Artemis-2 high-frequency ultrasound in determination of human corneal thickness

Repeatability and interobserver reproducibility of Artemis-2 high-frequency ultrasound in determination of human corneal thickness

... Generally, SP-3000P may be preferred for routine measurement and monitoring of CCT in older patients and children because obtaining CCT measurement by SP-3000P is rapid, easy, requires no expertise or topical anesthetic, ...

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High Intensity Focused Ultrasound (HIFU) Based Thrombolysis Using Multiple Frequency Excitations.

High Intensity Focused Ultrasound (HIFU) Based Thrombolysis Using Multiple Frequency Excitations.

... higher frequency yields a smaller focal size, reducing the risk of tissue erosion outside the desired region [13, ...as high inertial cavitation thresholds at high frequencies, a large amount of ...

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The use of high-frequency ultrasound imaging and biofluorescence for in vivo evaluation of gene therapy vectors

The use of high-frequency ultrasound imaging and biofluorescence for in vivo evaluation of gene therapy vectors

... [2,3]. High-frequency ultrasound (HF-US) machines are available for small animal ...give high resolution greyscale images of mouse anatomy ...are very cheap, non-invasive and allow ...

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A doublet mechanics model for the ultrasound characterization of malignant tissues

A doublet mechanics model for the ultrasound characterization of malignant tissues

... the frequency range considered, as it does the difference in frequency between two suc- cessive ...at high values of E, the minimum values of the reflection coefficient do not vary ...a high ...

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Cell Characterization Using High Frequency Ultrasound.

Cell Characterization Using High Frequency Ultrasound.

... The analysis of the above experiment can be done in either time domain, or in frequency domain. Measurement of the travel time is complicated by waveform distortion due to the tissue inhomogeneity and the ...

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Facial Skin Rejuvenation with High Frequency Ultrasound: Multicentre Study of Dual Frequency Ultrasound

Facial Skin Rejuvenation with High Frequency Ultrasound: Multicentre Study of Dual Frequency Ultrasound

... The severity of wrinkles was rated according to the 5-grade Wrinkle Severity Rating Scale (WSRS) [16]: 1) absent, continuous skin line; 2) mild wrinkles, minor facial feature; 3) moderate wrinkles, clear facial feature ...

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The interpretation of very high frequency band of instantaneous pulse rate variability during paced respiration

The interpretation of very high frequency band of instantaneous pulse rate variability during paced respiration

... CC, the first author, received the M.S. degree in Biomedical Engineering and Ph. D. degree in Computer Science and Engineering from the National Chiao Tung University, in 2010 and in 2013, respectively. Currently, he is ...

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High frequency ultrasound for the diagnosis of skin cancer in adults

High frequency ultrasound for the diagnosis of skin cancer in adults

... found very little good quality evidence for any of the interventions used (Bath-Hextall ...for high risk lesions on the face where standard wider excision margins might lead to incomplete excision or ...

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UHF Communication Studies in Urban Areas

UHF Communication Studies in Urban Areas

... particular frequency, digital, SSB and code communication is possible using surprisingly low transmission powers, often of the order of milli watts, provided suitable antennas are in use at both ends and that ...

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A high incidence of polymorphic CYP2C19variants in archival blood samples from Papua New Guinea

A high incidence of polymorphic CYP2C19variants in archival blood samples from Papua New Guinea

... An extremely high frequency (70.6 per cent) has been reported in the Melanesian island of Vanuatu. 7 Relatively little is known about the incidence in other ethnic populations, however, such as the ...

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Degradation of Endocrine Disrupting Chemical Nonylphenol in Aqueous Milieu using High Frequency Ultrasound

Degradation of Endocrine Disrupting Chemical Nonylphenol in Aqueous Milieu using High Frequency Ultrasound

... with a SupelcosilLC-18 column (ID=4.6 mm, length=250 mm, d p =5 µm). The samples were injected using a Rheodyne injection system with a 200 µL sample loop for NP concentrations. The detection of the absorbed organic ...

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Doppler ultrasound venous mapping of the lower limbs

Doppler ultrasound venous mapping of the lower limbs

... Our study proposes a venous mapping protocol for inves- tigating the superficial and deep venous axes of the lower limbs, considering four anatomical parts (two for the thigh and two for the calf) using HD-ECD (see an ...

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Acoustic Weapons pdf

Acoustic Weapons pdf

... are very short ...is very fast immersed in the same overpressure from all sides, and a sizeable net force is mainly exerted by the dynamic-pressure drag of the moving air behind the ...

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