Table 1. Choice of frequency and probe type for ultrasound.

Abbreviations: FAST: focused assessment with sonography for trauma, DVT: deep vein thrombosis 

Frequency	Use
2.5 MHz to 5 MHz Curvilinear	Thoracic ultrasound Blue protocol, thoracentesis, abdominal aortic aneurysm, deep abdomen ultrasound, obstetric, and gynecological ultrasound   FAST scan
3.5 to 5.0 MHz Phased array	Echocardiogram and lung ultrasound, Thoracentesis, FAST
6 MHz to 11 Linear array	Breast, thyroid, carotids, retinal scans, musculoskeletal, DVT, pleural masses, vascular ultrasound
12 to 15 MHz B scan probe	Eyeball