SPI Practice Test (Examrefresh

If an inpatient is brought to the ultrasound department for an exam and does not have an ID bracelet what is the correct procedure? - Postpone exam until correct identification may be obtained. If you add a focal zone your frame rate will? - Decrease The beam is narrowest at what point? - At the focus The term anechoic in relation to a sonographic image means? - The absence of echoes Of the following which is a process that redirects the beam intensity? - Reflection Two identical systems produce a pulse. One pulse is 0.8 usec in duration while the other is 1.4 usec. The best radial resolution will be caused by which system? - 0.8 usec pulse Which equation is used to find the Doppler shift? - Fd = 2 Fo V/c Intensity can be found with which equation? - I=p/area (power divided by the area) Brightness of the display is affected by? - echo intensity A low frame rate will cause? - Poor temporal resolution Waves that reach the same location at the same time combine together, this effect is called what? - interference With continuous wave ultrasound which intensity is the same as SATA? - SAPA The majority of the energy for blood flow comes from? - Left ventricle systole As the operator increases the maximum imaging depth the pulse duration (PD)...? - Unchanged Slice thickness is usually seen as what? - Improper brightness of reflectors Side lobes usually display which artifact? - Single reflectors appearing in multiple locations on the image. I=P/Area is what equation? - Intensity