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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]
Flat feet (Pes planus foot) essentially means that the arch inside the foot is flat. This very common painless disorder may occur at birth or after pregnancy. Flat feet generally do not cause problems but may sometimes cause the foot to rotate inwards (pronation). There are orthotic shoe insoles (foot orthotics) that help correct flat feet.
Dorsiflexion of the foot may elicit the pain due to stretching of the plantar fascia with this motion. [4] [12] Diagnostic imaging studies are not usually needed to diagnose plantar fasciitis. [7] Occasionally, a physician may decide imaging studies (such as X-rays, diagnostic ultrasound, or MRI) are warranted to rule out serious causes of foot ...
A combination of physical examination of the arch and plantar fascia, as well as ultrasound imaging by a physician is the usual path to diagnosis. [citation needed] An MRI (Magnetic Resonance Imaging) scan is usually the imaging of choice to determine between other possible conditions such as ganglion cysts. MRI tends to be more accurate than x ...
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.
Those with lower back problems may have symptoms. Back problems with the L4, L5 and S1 regions are suspect and might suggest a "Double Crush" issue: one "crush" (nerve pinch or entrapment) in the lower back, and the second in the tunnel area. In some cases, TTS can simply be idiopathic. [1] This is an image of a normal arched foot.
The risk of deep vein thrombosis can be estimated by Wells score.. Lower limbs venous ultrasonography is also indicated in cases of suspected pulmonary embolism where a CT pulmonary angiogram is negative but a high clinical suspicion of pulmonary embolism remains. [1]
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.