ARRT review - MRI registry review program Questions and Answers | Already passed | Latest Update

An RF pulse of what flip angle will maximize the component of the net magnetization projected into the transverse plane? a. 180 b. 120 c. 90 d. 45 : c. T1 relaxation refers to ____ relaxation. a. spin-spin b. longitudinal c. phase 2 d. transverse : b. Which of the following statements is false? a. T1 relaxation refers to longitudinal recovery of magnetization while T2 relaxation refers to the transverse decay of magnetization b. T1 relaxation and T2 relaxation occur simultaneously c. echoes collected in the transverse plane demonstrate only T2 relaxation differences d. T2 relaxation occurs much more quickly than T1 relaxation : c. If the precessional frequency of the patient's protons is approximately 21 MHz, what magnetic field strength is being experienced by the patients protons? : Larmor frequency equation W0= B0 x Y 21= 42.6 x (X) 3 21/42.6 = .4929 (round) = 0.5