The plus symbol identifies __________ for procedures that are commonly, but not always, performed at the same time and by the same surgeon as the primary procedure

Which of the following drugs is listed on Schedule III?

A) Valium B) Lomotil C) Tylenol #3 D) Ritalin

Match the following choices with the correct statement as each relates to medical sonography.

a. B-mode b. rayls c. damping material d. decibels e. Doppler f. acoustic coupler g. PZT h. matching layer i. M-mode j. Huygen's principle 1. unit of acoustic impedance 2. ultrasound gel 3. comes in direct contact with the patient as part of the transducer 4. scanning mode used to assess cardiac pathologies