OBJECTIVE. Bone health is a major concern in patients with Turner syndrome (TS). There are few studies assessing bone mineral status in TS adolescents and none have reported a clear relationship with the risk of fracture. We assessed bone mineral status at three different skeletal sites by two different densitometric techniques in a group of TS adolescents. DESIGN. In 24 TS adolescents (17.1±3....

The aim of the present study was to investigate the age-related patterns and the relationship between levels of urinary cross-linked N-telopeptide of type-I collagen (NTx) and heel stiffness index measured by quantitative ultrasound (QUS) in men with a special reference to age groups of aged 40 to 59 years and ≥60 years.A total of 379 men participated in this study. Heel stiffness index (bone m...

Quantitative ultrasound (QUS) has been used to characterize soft tissues at ordinary abdominal ultrasound frequencies (2 to 15 MHz) and is beginning application at high frequencies (20 to 70 MHz). For example, backscatter and attenuation coefficients can be estimated in vivo using a reference phantom. At high frequencies, it is crucial that reverberations do not compromise the measurements. Suc...

Two mouse models of mammary cancer (a carcinoma and sarcoma) were examined using quantitative ultrasound (QUS). Scatterer property estimates, i.e., the average scatterer diameter (ASD) and average acoustic concentration (AAC), were estimated from regions-of-interest (ROIs) inside the tumors. Initially, the spherical Gaussian model was used over an analysis bandwidth of 10 to 25 MHz to obtain AS...

OBJECTIVES To screen for low bone mineral density among young adult Saudi women using quantitative ultrasound (QUS) and exploring the high risk groups. Methods: A cross-sectional study was performed on 279, 20-36 years old female students and employees of Taibah University, Al Madinah Al Munawwarah, Kingdom of Saudi Arabia between January and May 2014. The study included bone status assessed us...

Quantitative ultrasound (QUS) measurement of tibial speed of sound (SOS) can be used to determine bone strength. Children conceived with assisted reproduction treatments (ART) are taller than naturally conceived (NC) children, so we hypothesized that these infants would have higher SOS levels than NC infants. Thirty-seven ART (ART group) and 51 NC neonates (NC group) were included in the study....

dxl of calcaneus is a portable method for bmd. this study determined a cut off point for dxl in osteoporosis diagnosis. in 510 healthy postmenopausal women, bmd of axial regions with dxa (dpx-md, ge,lunar corp, madison, wi) and heel with dxl (demeteck- sweden), measured. the agreement of two methods and cut off point for dxl in defining osteoporosis, obtained. dxa found osteoporosis in 34.3% an...

The aim of the present study was to investigate the age-related patterns and the relationships between serum levels of tartrate-resistant acid phosphatase-5b (TRACP-5b) or bone-specific alkaline phosphatase (BAP), and the heel stiffness index measured by quantitative ultrasound (QUS) in 429 Japanese men, with special emphasis on 2 age groups (40-59 years and 60 years or over). The heel stiffnes...

The cervix softens and shortens as its collagen microstructure rearranges in preparation for birth, but premature change may lead to premature birth. The global preterm birth rate has not decreased despite decades of research, likely because cervical microstructure is poorly understood. Our group has developed a multilevel approach to evaluating the human cervix. We are developing quantitative ...

OBJECTIVE Osteoporosis, osteosclerosis, and lytic bone lesions have been observed in patients with systemic mastocytosis (SM). We examined bone mineral density (BMD) biochemical turnover markers and serum tryptase levels in SM, which is considered a rare disease. MATERIALS AND METHODS Seventeen adult patients (5 females, 12 males; median age: 33 years, range: 20-64) with mastocytosis were inc...