Basic Ultrasound Priniciples Flashcards
Transverse Plane
Surface Orientation:
- anterior
- posterior
- right (medial/lateral)
- left (medial/lateral
transverse plane
Longitudinal Plane
Surface Orientation:
- anterior
- posterior
- superior
- inferior
- saggital divides body into UNEQUAL right and left sections
Longitudinal plane
Transverse vs Longitudinal Visual
Transducer Orientation
- scan lines come out transducer to form a plane or slice
- the image is then displayed on the screen
- for proper orientation the INDICATOR must match the SCREEN orientation
When is screen orientation usually opposite?
- echocardiography
Transverse, Off-Axis
Longitudinal, In-Axis
3 Primary Ways to Use US for Needle Guidance
1) In axis, in plane (long of anatomy, needle in plane)
2) Off axis, off plane (trans of anatomy, needle out of plane) used for PICC lines and PIVs
3) Off axis, in plane (trans of anatomy, needle in plane) most popular for regional anesthesia and blocks.
In axis, in plane
off axis, off plane
off axis, in plane (how you will hit a nerve)
echogenic
having echoes, white
anechoic/sonolucent
without echoes, black