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.
A typical ultrasound takes between 30 minutes and an hour. Ultrasounds usually are not uncomfortable, and you are awake and alert during the procedure. Often a technician will discuss what he or she is seeing during the test, but in some instances, you may need to wait to discuss the findings with your doctor.