Drinking cranberry juice is a fairly well-known and natural way to both help prevent urinary tract infections, as well as help speed the recovery process when a UTI develops. Just drinking two 4-ounce glasses of cranberry juice daily is often enough to both prevent a UTI and speed recovery when an infection does develop.
Ultrasound waves travel faster through a stiff medium, such as bone. In echocardiography, the velocity of sound is assumed to be approximately 1,540 m/sec (or 1.54 m/msec). Sound waves travel through the air with speed of 330 m/s.
All Answers (16) 1  high frequency = high spatial resolution but limited depth of penetration. low frequency = greater depth of penetration but lower spatial resolution. 2  The spatial resolution of ultrasound is actually quite good. The limitation is that the field-of-view is usually smaller than other imaging techniques. Ultrasound is also constrained by not being able to image through bone or gasses. ... Â·. higher frequency = higher spatial resolution but less depth of penetration.