Different types of probes have different range of frequency.
Frequency is inversely related to penetration.
Frequency is directly related to axial resolution (the ability to distinguish between two objects at different depth).
Low frequency probe is good for looking deep into the body cavity (better penetration).
High frequency probe is good for look at small objects near the surface.
Ultrasound: physics and knobology
Ultrasound: Signs
Ultrasound: Probe selection
Nerve Block: Median
Ultrasound: Probe orientation
Ultrasound: Tendons
SCVMC:Main
Santa Monica:Antibiotics in Sepsis