نتایج جستجو برای: sectional area
تعداد نتایج: 761135 فیلتر نتایج به سال:
OBJECTIVES To demonstrate that parasagittal constructive interference in steady state (CISS) magnetic resonance imaging (MRI) can be used to accurately measure cochlear nerve cross-sectional area and thereby evaluate for statistically significant differences in the cochlear nerve cross-sectional areas of postlingually deafened and normal-hearing adults. STUDY DESIGN Cross-sectional study. S...
Objectives To assess the relationship between cross-sectional area of internal jugular veins and brain volumes in healthy individuals without neurologic disease. Methods A total of 193 healthy individuals without neurologic disease (63 male and 130 female; age > 20 to < 70 years) received magnetic resonance venography and structural brain magnetic resonance imaging at 3T. The internal jugular v...
Assessment of nasal airway is helpful in understanding nasal breathing function. Acoustic rhinometry is one of the most commonly-used objective measurements of nasal airway. This test has the ability to measure the volume and the cross-sectional area of the nose in different distances. It also determines the site of minimal cross-sectional area. These variables are different in various races. D...
CONTEXT Cross-sectional associations for lean mass (LM) and fat mass (FM) with bone may not reflect longitudinal associations. OBJECTIVE Cross-sectional and longitudinal associations of LM and FM with radial bone measurements in children were compared. DESIGN AND PARTICIPANTS We conducted a longitudinal study on 370 (232 females) children, 8-18 yr of age. MAIN OUTCOME MEASURES LM and FM w...
This study reports the results of a comparison of the histochemical properties of various types of porcine muscles in wild and domestic pigs. In domestic pigs, the influence of growth rates on these properties were studied in five muscles: longissimus dorsi (LD), semimembranosus (SM), gluteus superficialis (GS), infra spinam (IS) and masseter (MAS). The growth rate was expressed as: (i) live we...
The purpose of the present study was to determine the relationship between cross-sectional design and fracture load using a static load bearing test in yttria-stabilized tetragonal zirconia polycrystal ceramic frameworks on a molar fixed partial denture. The test framework was designed as a 3-unit bridge with two abutment teeth at the second premolar and second molar of the mandible. The cross-...
OBJECTIVE Compare levator ani cross-sectional area as a function of prolapse and muscle defect status. METHODS Thirty women with prolapse and 30 women with normal pelvic support were selected from an ongoing case-control study of prolapse. For each of the two groups, 10 women were selected from three categories of levator defect severity: none, minor, and major identified on supine magnetic r...
BACKGROUND Acoustic reflectometry is a relatively new technique that quantifies upper airway obstruction. The oropharyngeal airway is geometrically complex and variable; therefore establishing a standard operating protocol and understanding the possible sources of artifacts are of great importance in obtaining reliable results. This work aims at assessing the repeatability of pharyngeal cross-s...
PURPOSE Extensive tunnel expansion in hamstring anterior cruciate ligament (ACL) reconstruction can complicate revision surgery. The purpose of this study was to examine our hypothesis that compaction of a bone dowel into the tibial tunnel reduces the cross-sectional area of the tunnel on the day of surgery and limits tunnel expansion to that of the cross-sectional area of the reamer at 4 month...
This study was conducted to evaluate whether preoperative magnetic resonance imaging (MRI) measurements of the cross-sectional area and length of the semitendinosus tendon correlated with graft diameter. The goal of the study was to identify tendons at risk for requiring graft augmentation. The records of 140 consecutive patients undergoing anterior cruciate ligament (ACL) reconstruction betwee...
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