CH 7-8

2. pathological breaking up of fibrin
4. the amount of time from the initial nonzero charge to the return to a zero charge, forming one complete cycle
6. circular current of fluid, often moving against the main flow
8. transmission medium to transmit energy from transducer into the tissues
9. meter that displays the total watts on an upper scale while simultaneously displaying output in watts per square centimeter on the lower scale
10. technique used when treating irregularly shaped areas so a more uniform dose of ultrasound is delivered using water as the transmission medium; body part immersed in a tub of water
12. the amount of time between ultrasonic pulses
14. displays the output of ultrasound in total watts or watts per square centimeter
16. when a bone forms inside of your muscle or other soft tissue
17. growth plate of a bone; where a bone is still growing; do not use ultrasound over this area
19. a highly reactive molecule having an odd number of electrons; important role in progression of ischemic injury

1. transducer is applied directly to the skin, with an approved gel used to transfer the energy between the ultrasound head and the skin
3. method that used a balloon, condom, or plastic bag filled with water or ultrasound transmission gel that was coated with a coupling agent; able to conform to irregularly shaped areas
5. a surface where two materials of different densities meet
7. formation of new blood vessels
11. single frequency wave formed by the collision of two waves of equal frequency and speed traveling in opposite directions
12. seep-seated ache resulting from overly intense application of ultrasonic energy that irritates bone's periosteum
13. technique used where sound head is held over target tissue; can produce overheating of tissue or hot spots
15. specialized portion of a cell that performs a specific function
18. spacial average temporal average intensity; the average amount of energy per unit of time