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Medical ultrasound includes diagnostic techniques (mainly imaging techniques) using ultrasound, as well as therapeutic applications of ultrasound. In diagnosis, it is used to create an image of internal body structures such as tendons, muscles, joints, blood vessels, and internal organs, to measure some characteristics (e.g., distances and velocities) or to generate an informative audible sound.
ACE provides professional education and continuing medical education (CME) with the objective of promoting the translation of scientific advances into clinical practice. ACE programs include the Endocrine Certification in Neck Ultrasound (ECNU) [9] program and the ACE Self-Assessment Program (ASAP). [10]
REMS processes the raw, unfiltered ultrasound signals acquired during an echographic scan of the axial sites, femur and spine. The analysis is performed in the frequency domain. Bone mineral density is estimated by comparing the results against reference models. The accuracy has been tested by comparing it against to DXA technology.
Therapeutic ultrasound of vessels of head and neck Anti-restenotic ultrasound; Intravascular non-ablative ultrasound Therapeutic ultrasound of heart Anti-restenotic ultrasound; Intravascular non-ablative ultrasound Therapeutic ultrasound of peripheral vascular vessels Anti-restenotic ultrasound; Intravascular non-ablative ultrasound
Many emergency physicians now view screening ultrasound as a tool, and not a procedure or study. It is primarily used to quickly and correctly ascertain a limited set of internal injuries, specifically those injuries where conventional methods of determining them, such as trauma to the torso or heart, would either take too long, require too much time to prepare, or introduce greater risk to ...
In this study, ultrasound was only 35% accurate at finding a single loop, and only 60% accurate at detecting a nuchal cord wrapped multiple times around the neck. [9] In no study was it possible by ultrasound to distinguish between a loose or a tight cord, although at least 3 attempted to do so.
The ultrasound probe emits a high-frequency sound wave (usually a multiple of 2 MHz) that bounces off various substances in the body. These echoes are detected by a sensor in the probe. In the case of blood in an artery , the echoes have different frequencies depending on the direction and speed of the blood because of the Doppler effect . [ 2 ]
Ultrasound can ablate tumors or other tissue non-invasively. [4] This is accomplished using a technique known as high intensity focused ultrasound (HIFU), also called focused ultrasound surgery. This procedure uses generally lower frequencies than medical diagnostic ultrasound (250–2000 kHz), but significantly higher time-averaged intensities.