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Tetralogy of Fallot (TOF), formerly known as Steno-Fallot tetralogy, [9] is a congenital heart defect characterized by four specific cardiac defects. [4] Classically, the four defects are: [ 4 ] pulmonary stenosis , which is narrowing of the exit from the right ventricle;
Time of flight (ToF) is the measurement of the time taken by an object, particle or wave (be it acoustic, electromagnetic, etc.) to travel a distance through a medium. This information can then be used to measure velocity or path length, or as a way to learn about the particle or medium's properties (such as composition or flow rate).
A diagnosis of TOF is usually made with echocardiography, which can even be done prenatally. Most patients with tetralogy of Fallot will have cardiac repair surgery in the first year of life, where the ventricular septal defect is closed with a patch, and the right ventricular outflow tract is enlarged.
test-of-cure (+TOC meaning patient cured of disease proven via test) TOC: Transition of care TOD: transoesophageal Doppler TOE: transoesophageal echocardiogram: TOF: tetralogy of Fallot: TOP: termination of pregnancy: TOT: transobturator tape TP: total protein: TPa: tissue plasminogen activator: TPN: total parenteral nutrition: TPR: temperature ...
When the acoustic wave propagates though the sample it may be scattered, absorbed or reflected at media interfaces. Thus, the technique registers the echo generated by the acoustic impedance (Z) contrast between two materials. Scanning acoustic microscopy works by directing focused sound from a transducer at a small point on a target object.
Here’s the catch: Eating a ton of protein without doing the work (meaning: lifting weights) won’t build muscle—just like having tools but no construction. And lifting weights without enough ...
Even though there were thousands upon thousands of deals to shop over the last week, we still haven't finished our holiday shopping. But just because we didn't squeeze in all the shopping during ...
Time of flight of a light pulse reflecting off a target. A time-of-flight camera (ToF camera), also known as time-of-flight sensor (ToF sensor), is a range imaging camera system for measuring distances between the camera and the subject for each point of the image based on time-of-flight, the round trip time of an artificial light signal, as provided by a laser or an LED.