MRI – B 30 Dec Welcome to your MRI - B Professional Name: Email: Contact #: [On Figure arrow D is pointing to the:] Anterior cruciate ligament (ACL) Posterior cruciate ligament (PCL) Quadriceps tendon Patellar ligament Lateral retinaculum None Comment . [A typical spin echo (SE) sequence uses pulses:] 90°, 90° 90°, 180° 180°, 180° 180°, 90° None . [On Figure arrow I is pointing to the:] L3/L4 intervertebral disk L4/L5 intervertebral disk Cauda equina L4 vertebral body L5 vertebral body None Comment . [In July of 2003, The FDA’s Center for Devices & Radiological Health (CDRH ) modified the limit on RF absorption (dose) to __________ for the HEAD.] 2.0 W/kg absorption for 5 minutes 3.0 W/kg absorption for 10 minutes 4.0 W/kg absorption for 15 minutes 12.0 W/kg absorption for 5 minutes None . [In which of the following EPI sequences would one expect there to be the least susceptibility (distortion) artifacts?] Single-shot SE-EPI, 256 phase × 256 frequency Single-shot GRE-EPI, 512 phase × 192 frequency Multi-shot (4-shot) SE-EPI, 256 phase × 256 frequency Single-shot SE-EPI, 192 phase × 192 frequency None . [Decreasing the receiver bandwidth (narrow BW):] Decreases the number of slices Inverts the number of slices Increases the number of slices Has no effect on the number of slices None . [Gradient echo sequences use flip angles:] Less than 90° That vary between pulse repetitions To control saturation effects To reduce SAR for larger patients None . [On Figure arrow C is pointing to the:] Biceps muscle Triceps muscle Brachioradialis muscles Coronoid process None Comment . [The “effect” whereby the patient experiences a visual impression of seeing “stars in their eyes”, is known as _________.] Magnetohydrodynamic effect Magnet-hydrodynamic effect Magnet-hemodynamic effect Magnetophosphenes None . [On Figure arrow H is pointing to the:] Ligamentum flavum Conus medularis Cauda equina Posterior longitudinal ligament Anterior longitudinal ligament None Comment . [In a phase-contrast technique, it is possible to use the data to determine the:] Exact size of the vessel lumen Direction of blood flow Temporal displacement of the vessel Percentage stenosis of a lesion None . [On Figure arrow E is pointing to the:] Biceps tendon Triceps tendon Lateral collateral ligaments Head of the radius Capitellum None Comment . [Gradient speed (rise time) and strength (amplitude) is measured in units of: 1. mT/M 2. G/cm 3. T/m/s 4. μs 5. %] 1 only 1 and 2 only 3 only 4 only 5 only None . [On Figure arrow C is pointing to the:] Patello-femoral joint Femoral medial condyle Femoral lateral condyle Tibia Fibula None Comment . [A __________ can be used to administer nutrition or long-term chemotherapy.] Peg tube Chest tube Venous catheter J-tube None . [A gradient echo sequence in which any residual transverse magnetization is removed prior to the next excitation pulse is known as:] Nonphasic Incoherent/spoiled Nonresidual Magnetization prepared None . [The MR system component that provides a means for spatial encoding is the:] Main magnet Radiofrequency system Gradient system Shim system None . [In which direction should the top flap of a wrapped sterile package or tray be opened?] Toward the individual Away from the individual Toward the dominant hand Away from the dominant hand None . [On Figure arrow B is pointing to the:] Nipple Fatty tissue of the breast Pectoralis muscle Ducts and lobules Neovascularity Enhancing breast lesion None Comment . [When the body is invaded by pathogens, what is the response in the bloodstream?] Red blood cell count increases White blood cell count increases Serum count increases Platelet count increases None . Time's up
