نتایج جستجو برای: ultrasound scanning
تعداد نتایج: 264462 فیلتر نتایج به سال:
background: atherosclerosis of the peripheral arteries occurs in 12% of individuals at 65 years of age or older. at least 28% of these patients suffer from coronary heart diseases and 10% of them are afflicted with cerebrovascular diseases. to calculate the agreement between two diagnostic tests for peripheral arterial disease (pad), namely ankle brachial index (abi) and ultrasound duplex scann...
objectives: in a single blinded randomized controlled study, we investigated the effect of stabilization exercise on lumbar multifidus muscle thickness in patients with non-specific chronic low back pain. low back pain is highly prevalent and results in considerable level of disability. many causes have been associated with weakness or injury of the soft tissues in the lumbar area. methods: a t...
The past two decades have witnessed developments of new imaging techniques that provide three-dimensional images about the interior of the human body in a manner never before available. Ultrasound (US) imaging is an important cost-effective technique used routinely in the management of a number of diseases. However, two-dimensional viewing of three-dimensional anatomy, using conventional two-di...
In recent years, ultrasound scanning has become an important diagnostic tool in dermatology. It is easy to use, completely safe, and provides important diagnostic information. There are 2 basic types of ultrasonography with dermatologic applications. The best established is 20-MHz scanning, which can be used to measure tumor thickness and/or skin thickness when treating inflammatory diseases su...
Prenatal ultrasound is a powerful diagnostic tool, but there has been little research on how to teach ultrasound to family physicians. The available evidence supports teaching through didactics followed by supervised scanning. Didactic topics include physics and machine usage, indications, fetal biometry, anatomic survey, practice management, ethical issues, and resources. Supervised scanning r...
Air-coupled ultrasound has shown excellent sensitivity and specificity for the nondestructive imaging of wood-based material. However, it is timeconsuming, due to the high scanning density limited by the Nyquist law. This study investigated the feasibility of applying compressed sensing techniques to air-coupled ultrasound imaging, aiming to reduce the number of scanning lines and then accelera...
The developmental age of an embryo in the first trimester of pregnancy is generally determined by ultrasound scanning and/or by calculation from menstrual age. In the original studies, validation of the estimate of gestational age by ultrasound was not possible as the exact date of conception was unknown. Variation in growth rates of identically aged fetuses has previously been reported after a...
Intraoperative ultrasound facilitates localisation of tumour boundaries during minimally invasive procedures. Autonomous ultrasound scanning systems have been recently proposed to improve scanning accuracy and reduce surgeons’ cognitive load. However, current methods mainly consider static scanning environments typically with the probe pressing against the tissue surface. In this work, a motion...
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