نتایج جستجو برای: ultrasound safety
تعداد نتایج: 368377 فیلتر نتایج به سال:
Ultrasound energy exerts important cellular, genetic, thermal, and mechanical effects. Concern about the safety of ultrasound prompted several agencies to devise regulatory limits on the machine output intensities. The visual display of thermal and mechanical indices during ultrasound imaging provides an aid to limit the output of the machine. Despite many animal studies, no human investigation...
Introduction Recent surveys of clinical users of ultrasound conducted in Europe and North America show that users of ultrasound worldwide are poorly informed about the safety issues of diagnostic ultrasound technology. For instance, only 32% of American and European users reported being familiar with the term Thermal Index (TI), and only 18% of Americans and 22% of Europeans could correctly def...
Background: Medial pinning is one of the most controversial aspects of the surgical treatment of supracondylar fractures (SHF) owing to the risk of ulnar nerve injury. Aim: To evaluate the safety and usefulness of medial pinning for SHF using ultrasound imaging for ulnar nerve visualization. Methods: Fifteen children, with a mean age of 60 months, with displaced SHF were treated with a cros...
Applications of ultrasound in medicine for therapeutic purposes have been accepted and beneficial uses of ultrasonic biological effects for many years. Low-power ultrasound of about 1 MHz has been widely applied since the 1950s for physical therapy in conditions such as tendinitis and bursitis. In the 1980s, high-pressure-amplitude shock waves came into use for mechanically resolving kidney sto...
we present a case of unexpectedly prolonged motor and sensory block following a successful single injection ultrasound – guided infraclavicular block with bupivacaine (0.25%) and dexamethasone (8 mg). ultrasound guidance and safety measurement such as injection of the local anaesthetic at a slow rate and verifying that usual resistance was felt throughout the injection, has been applied. it too...
Percutaneous tracheostomy has become a routine procedure in most intensive care units, and point of care ultrasound is becoming used with greater frequency to augment diagnosis and therapy for critically ill patients. The case series from Rajajee and colleagues incorporates 'real-time' ultrasound in an effort to improve the safety of percutaneous tracheostomy. While their report does not prove ...
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