Increasing frequency improves resolution but decreases penetration
Low-frequency transducers: deep structures
High-frequency transducers: superficial structures
Low-frequency transducers: deep structures
High-frequency transducers: superficial structures
Curvilinear: large “footprint”, best resolution centralized
Use for abdominal, FAST exam
Phased array: all waves originate from a single point. used to view deep structures.
Use for smaller spaces (between ribs, to look at lungs, heart, etc.)
Use if available for Cardiac
Linear: no array of waves, waves are spread out evenly. used to view superficial structures
Use for soft tissue, vascular access, musculoskeletal, lungs
Use for smaller spaces (between ribs, to look at lungs, heart, etc.)
Use if available for Cardiac
Use for soft tissue, vascular access, musculoskeletal, lungs
Each transducer has a range of frequencies. You can select higher or lower frequency for each probe
on the<unk>  machine.
RES = Resolution = Highest end of the probe’s frequency range
Better Picture, lower penetration
PEN = Penetration = Lowest end of the probe’s frequency range
Higher penetration, worse picture
GEN = General = Middle of the probe’s frequency range
Better Picture, lower penetration
Higher penetration, worse picture
Sagittal: indicator to patient’s head.  Probe placed vertically along body to create a sagittal view with probe marker pointing to patient's head
Transverse: indicator to patient’s right. Probe placed across body right to left to create an axial view with probe marker pointing to patient's right
Coronal: indicator to patient’s head, but probe on lateral side of body.  Top of screen is lateral, bottom is medial
Ultrasound: Probe orientation
Ultrasound: Probe selection
Ultrasound: Signs
Ultrasound: Pelvic
Ultrasound: physics and knobology
Ultrasound: Abdomen
Ultrasound: Soft tissue
Ultrasound: Pharyngeal