Reproducibility and biologic variability of volumetric intravascular ultrasound measurements
نویسندگان
چکیده
منابع مشابه
Reproducibility of Ultrasound Measurements
Background-The pattern of growth of the uterus was examined by ultrasound examinations of 358 girls who attended a paediatric endocrine outpatient department but were shown not to have any endocrine defect. Method-The uterus was measured in length and width at the cervix and at the fundus (cm). Endometrial thickness was measured (mm). Scans were divided by Tanner breast stage and the dimensions...
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RATIONALE AND OBJECTIVES The authors assessed the reliability and reproducibility of volumetric measurements of olfactory bulbs and tracts (OBTs) and temporal lobes (TLs) with magnetic resonance (MR) imaging. METHODS Repetitive MR imaging of two phantoms and OBTs and TLs of patients was performed. Regions of interest were manually drawn around the relevant structures, and their volumes were m...
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To determine which factors may affect the image quality when an intravascular ultrasound catheter is used in vivo, the influence of blood, temperature change, and contrast media were evaluated. In addition, to confirm the reproducibility of intravascular ultrasound imaging to measure cross-sectional lumen area, intraobserver and interobserver variability were determined. The findings indicated ...
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Intravascular ultrasound (IVUS) has been utilized primarily to evaluate plaque formation of the coronary and carotid arteries. Several studies have reported three-dimensional (3D) IVUS image reconstruction algorithms to better provide anatomical information of the arterial wall structure. However, most of previous 3D IVUS studies provided unrealistic morphology and acoustic information in the a...
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OBJECTIVE To assess the repeatability and reproducibility of ultrasonographic measurements at the anterior surface of the femoral neck and iliofemoral ligament and on a human tissue-mimicking phantom. METHODS Two independent investigators studied 22 consecutive hips. One investigator had previous experience in musculoskeletal ultrasonography (US). The other investigator had undergone a short ...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1998
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(98)80512-3