Quantitative ultrasound (QUS) is a novel approach for characterizing tissue microstructure and changes in tissue microstructure due to therapy. In this report, we discuss changes in QUS parameters in liver tissues after being exposed to thermal insult. Effective scatterer diameter (ESD) and effective acoustic concentration (EAC) from the normalized backscattered power spectrum were examined in ...

Background: The aim of the study was to investigate the use of quantitative ultrasound (QUS) in the young (20-25years) Saudi females to obtain stiffness index values related to bone quality. Method & Findings: In 101 young females recruited, QUS measurements were performed in the calcaneus region. 33% and 3% had osteopenia and osteoporosis in the calcaneus respectively, stiffness index values =...

Estimating total ultrasound attenuation from backscatter data is essential in the field of quantitative ultrasound (QUS) because of the need to compensate for attenuation when estimating the backscatter coefficient and QUS parameters. This work uses a reference phantom method of attenuation estimation to create a spatial map of attenuation slope (AS) from backscatter radio-frequency (RF) data o...

BACKGROUND Interventions other than medications in the management of osteoporosis are often overlooked. The purpose of this study was to investigate the association of physical activity and calcium intake with bone parameters. METHODS We measured the heel T-score and stiffness index (SI) in 1890 pre- and postmenopausal women by quantitative ultrasound (QUS) and assessed physical activity and ...

Corresponding author: Chul-Hee Kim Division of Endocrinology & Metabolism, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, 1174 Jung-dong, Wonmi-gu, Bucheon 420-767, Korea E-mail: [email protected] To the Editor: In a recent issue of Korean Diabetes J, Lee and colleagues [1] presented an article regarding “bone mineral de...

In osteoporosis, changes in tissue structure and composition impair the mechanical strength of bone and increase the risk of fractures. Osteoporosis causes millions of bone fractures annually worldwide. It is commonly diagnosed by means of dual energy X-ray absorptiometry (DXA), a technique that provides information on areal bone mineral density (BMD, g/cm2). However, most of the low trauma fra...

For a number of reasons there is a need to explore reliable non-invasive methods for assessing bone health in neonates and young infants. Epidemiological studies suggest that early events in life may predispose the adult to degenerative diseases such as osteoporosis. Preterm infants have an increased risk of low bone mass because of limited bone mass accretion in utero and a greater need for bo...