MRSO: Exam 4 Questions With Complete Correct Answers.

Peripheral nerve stimulation can be described by which of the following? a. Faraday's law of induction b. Ohm's law c. Lenz's law d. Planks Law - Answer b. Faraday's law of induction (describes the induction of electrical current in the presence of a changing magnetic field). Lenz's force describes the opposing forces created. Ohm's law deals with the resistance of current along a wire. Gad contrast has been found in the body in what form? Select all that apply. a. Water-soluble b. Non-water soluble - Answer a, b Which of the following would we expect to be the loudest sequence? a. GRASS b. Fast spin echo c. Conventional gradient sequence d. FLAIR - Answer a. GRASS The FLAIR and fast spin echo are considered spin echo sequences; they do not have extremely fast changing gradient, so will not produce as much noise. Which of the following has a steeper spatial magnetic gradient? a. Vertical B0 b. Horizontal B0 - Answer a. Vertical B0The strongest gradient strength will reach maximum strength how far from isocenter? a. 5-20 cm b. 20-40 cm c. 30-60 cm d. 5-15 cm - Answer c. 30-60 cm