1 Most cases of malaria and most of the deaths caused by malaria occur in Africa.  Although most cases of malaria are caused by Plasmodium falciparum or P. vivax, P. falciparum accounts for almost all of the deaths caused by malaria.
For Echocardiography, color Doppler frame rates should be kept 17 Hz or above and preferably in the 20-30 Hz range. Every ultrasound machine has a numeric display of the current frame rate, which can range from less than 10 Hz to more than 60 Hz. Above: Image data area with FPS (Frames Per Second) and other adjustments.
For the most part, ultrasound is considered a painless, non-invasive diagnostic tool. The procedure usually takes from 30 minutes to an hour. Most ultrasound scans can be performed with the transducer placed atop the skin, with the sound waves aimed at the organ or body part being tested. The patient is usually placed in a comfortable position that provides the ultrasound technician (sonographer) access to the part of the body being tested.