Welcome to your MRI - B Professional Name: Email: Contact #: [Images acquired with a spin echo pulse sequence having LONG TR and SHORT TE values yield images known as (Figure):] T1WI T2WI PDWI Diffusion images None Comment . [The MR images in Figure (a) are displayed without and with contrast media. Theimages are T1WI without and with contrast. The lesion on the enhanced imageappears bright because gadolinium:] Shortens the T1 relaxation time Increases (lengthens) the T1 relaxation time Shortens the T2 relaxation time Increases (lengthens) the T2 relaxation time None Comment . [On Figure arrow D is pointing to the:] Femur Patella Femoral condyle Tibial plateau Tibial spine None Comment . [Center frequency is a factor that determines the:] Frequency of RF used for excitation Frequency of RF used for signal detection a and b Amplitude and/or duration of the RF pulse (to determine flip angle) None . [The condition reached within a few seconds of hydrogen being placed in a magnetic field is described as:] Resonance Free induction decay Phase coherence Thermal equilibrium None . [On Figure high signal in the right posterior portion of the brain is visualized on the diffusion image (left) but not the FLAIR image (right) because:] Old stroke has a high fluid content Old stroke has unrestricted molecular diffusion New stroke has restricted molecular diffusion New stroke demonstrates T2 shine through None Comment . [On Figure arrow E is pointing to the:] Celiac artery Splenic artery Hepatic artery Superior mesenteric artery Internal iliac artery None Comment . [The decreased myelination found in brains of children under 1 year old results in a lack of image contrast. Consequently, in comparison to scanning adults, to achieve T2-weighted images during pediatric brain imaging often requires a:] Longer TE Longer TR Longer TI Higher flip angle None . [The FDA limits the effect of RF absorption to an increase in core body temperature] 0.1 °C 1° C 10 °F There is no limit None . [Complete saturation is a condition where:] Not enough time is given to allow the T2 decay to complete The image becomes brighter Longitudinal magnetization is not allowed to recover between excitations Proton density effects predominate None . [If the pulse sequence shown in Figure were a fast spin echo sequence, thenumber of lines of K space filled during each TR period would be:] 4 1 8 2 None Comment . [A normal blood pressure for an adult is:] 80/120 mmHg 120/80 mmHg 250/120 mmHg 120/250 mmHg None . [Phase-contrast techniques produce images in which the signal intensity within the vessel is dependent on (among other parameters) the:] Velocity of the flowing blood T1 of the tissue FOV selected Number of phase-encoding views None . [Increasing the matrix:] Increases scan time Inverts scan time Does not affect scan time Decreases scan time None . [In order to reconstruct an image acquired using parallel imaging, which of the following may be required?] Test bolus Reference or calibration scan Back projection Half-Fourier acquisition None . [On Figure arrow H is pointing to the:] Meniscus Eminence Mandibular fossa External auditory meatus (EAM) None Comment . [The images in Figure were acquired in the:] Axial imaging plane Sagittal imaging plane Coronal imaging plane Off-axis (oblique) imaging plane None Comment . [On Figure arrow C is pointing to the:] Trapezium Trapezoid Capatate Hammate None Comment . [The number of shots is calculated by:] TR × #PEs #PEs/ETL ETL/#PEs #PEs × NSA None . [Patients who have been reported to have had reactions to gadolinium include those with: 1. A history of asthma and/or allergies 2. Prior contrast reactions 3. Hemolytic anomalies 4. All patients] 1 only 1 and 2 only 1, 2, and 3 only 1, 2, 3, and 4 None . Time's up
