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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.
3D ultrasound is a medical ultrasound technique, ... developing techniques using real time 3D ultrasound to guide peripheral nerve blocks for shoulder, knee, and ...
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.
Ultrasound is also used as a popular research tool for capturing raw data, that can be made available through an ultrasound research interface, for the purpose of tissue characterization and implementation of new image processing techniques. The concepts of ultrasound differ from other medical imaging modalities in the fact that it is operated ...
The reflected ultrasound is received by the probe, transformed into an electric impulse as voltage, and sent to the engine for signal processing and conversion to an image on the screen. The depth reached by the ultrasound beam is dependent on the frequency of the probe used. The higher the frequency, the lesser the depth reached. [9]
There is a simplified technique called "compression ultrasonography" which can be used for quick DVT diagnosis, mainly for the common femoral vein and the popliteal vein. It is very useful in an emergency situation and is performed just by vein compression using transducer pressure. [ 9 ]
An anatomical study of cadaver knees indicated that ultrasound-guided bony landmarks could be used to effectively target the superior medial geniculate nerve, superior lateral geniculate nerve, and inferior medial geniculate nerve – the three nerves commonly targeted for knee RFA [3] – with average nerve-to-needle distances of 1.7, 3.2, and ...
A femoral nerve block is a nerve block that uses local anesthetic to achieve analgesia in the leg.The block works by affecting the femoral nerve.. A femoral nerve block (FNB) results in anesthesia of the skin and muscles of the anterior thigh and most of the femur and knee joint, as well as the skin on the medial aspect of the leg below the knee joint.