MRSO: Exam 2 questions with answers 2024/2025

MRSO: Exam 2What is the name of the gradient coil used to produce sagittal and coronal images? a. Transverse coil b. Golay coil c. Maxwell coil d. Receiver coil - correct answer b. Golay coil ("saddle coil") Which of the following is able to handle the most RF heating? a. elderly b. adult c. obese adult d. neonate - correct answer d. neonate Which of the following techniques can be used to increase the echo spacing? Select all that apply. a. Increase the TR b. Decrease receiving bandwidth c. Increase receiving bandwidth d. Use a receive only coil e. Increase field of view f. Increase flip angle - correct answer b, e Decreasing the receiving bandwidth will be lengthening the sample time. This may force us to increase our TE as well as the TR. Increasing the field of view will also allow for longer echo spacing. The differences in magnetic field strength as you approach the MRI unit is termed what? a. Spatial magnetic gradient b. Gauss line c. RF energy d. Gradient coils - correct answer a. Spatial magnetic gradient Measured in dB/dx Which of the following produce the greatest chance for peripheral nerve stimulation? a. Conventional spin echo b. Fast spin echo c. Gradient echo d. EPI - correct answer d. EPI A deflection of 45 degrees in a tested implant indicates that it deflects at a force equal to what? a. 0.5 gravity force b. 2 gravity force c. 0.25 gravity force d. 1 gravity force - correct answer d. 1 gravity force 4T/m is equal to what? a. 4000 G/cm b. 4G/cm c. 40 G/cm d. 400 G/cm - correct answer d. 400 G/cm 1T = 10,000 G 1m = 100 cm