Probes can be characterized according to their: Shape Arrangement of the piezoelectric crystals Frequency range Footprint In general they are classified as: Type Linear-Array Curvilinear (Convex) Array Phased Array Endocavity Description Crystals arranged in a linear...
Type Description Use High-Frequency Probes 6-15 MHz rangeGood resolution (0.5 mm axial and 1.0 mm lateral)Reduced penetration (5-6 cm depth of field) Vascular accessSuperficial nerve blocks (supraclavicular and axillary brachial plexus, forearm, femoral...
A-Mode(Amplitude Mode) B-Mode(Brightness Mode) M-Mode(Motion Mode) Doppler Mode Simplest form of imaging using a single wave emitted from the probeScans a line through the body with echoes plotted as a function of depthRarely used in intensive care or anaesthesiaUsed...
Describes the change in the transmitted frequency of a sound wave (ft) compared to the reflected (observed) frequency of the wave (fr) that occurs due to the relative motion between the observer and the source If the source and the observer are stationary any waves...
