Comparison of anterior orbital measurements obtained using standard frequency ultrasound, high frequency ultrasound and magnetic resonance
نویسندگان
چکیده
منابع مشابه
High Resolution in Vivo Magnetic Resonance Imaging of the Skin and comparison to High Frequency Ultrasound
For noninvasive imaging and characterization of the skin, high resolution imaging techniques have to be applied. While high frequency ultrasound (HFUS) achieves a resolution in the range of 10 μm, magnetic resonance imaging (MRI) on a 1.5 Tesla, special equipped clinical whole body imager obtains a resolution of several 10x10 μm in plane and several 100 μm slice thickness [1]. Additionally, MRI...
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PURPOSE To compare the precision of anterior chamber angle (ACA) and anterior chamber depth (ACD) measurements taken with ultrasound biomicroscopy (UBM) and the Artemis-2 Very High Frequency Ultrasound Scanner (VHFUS) in normal subjects. DESIGN Prospective study. METHODS We randomly selected one eye from each of 59 normal subjects in this study. Two subjects dropped out of the study; the as...
متن کاملQuantification of Ultrasound Contrast Agents Using High Frequency Ultrasound
Ultrasound contrast agents (UCAs) are small microbubbles filled with gas. Because of their scattering properties, UCAs enhance the diagnostic capabilities of ultrasonic imaging. UCAs are associated with therapeutic or enhancing therapeutic applications of ultrasound and with possible adverse bioeffects. Quantification of the in vivo concentration of microbubbles is therefore essential to establ...
متن کاملComparison of high-resolution Scheimpflug and high-frequency ultrasound biomicroscopy to anterior-segment OCT corneal thickness measurements
BACKGROUND The purpose of this study was to compare and correlate central corneal thickness in healthy, nonoperated eyes with three advanced anterior-segment imaging systems: a high-resolution Scheimpflug tomography camera (Oculyzer II), a spectral-domain anterior-segment optical coherence tomography (AS-OCT) system, and a high-frequency ultrasound biomicroscopy (HF-UBM) system. METHODS Fifty...
متن کاملLiver steatosis classification using high-frequency ultrasound.
High-frequency B-mode images of 19 fresh human liver samples were obtained to evaluate their usefulness in determining the steatosis grade. The images were acquired by a mechanically controlled single-crystal probe at 25 MHz. Image features derived from gray-level concurrence and nonseparable wavelet transform were extracted to classify steatosis grade using a classifier known as the support ve...
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ژورنال
عنوان ژورنال: Klinika Oczna
سال: 2018
ISSN: 0023-2157
DOI: 10.5114/ko.2018.79125