MRI – B 30 Dec Welcome to your MRI - B Professional Name: Email: Contact #: [Figure is an example of a:] T1-weighted image T2-weighted image Spin (proton) density-weighted image T2*-weighted image None of the above None Comment . [On Figure arrow M is pointing to the:] Superior vena cava Inferior vena cava Pulmonary artery Aortic arch None Comment . [Cardiac ciné acquisitions typically utilize:] An inversion recovery pulse sequence A spin echo pulse sequence A gradient echo pulse sequence A fast spin echo pulse sequence None . [T2 relaxation time is defined as when:] 76% of the longitudinal magnetization has decayed 63% of the longitudinal magnetization has decayed 63% of the transverse magnetization has decayed 76% of the tissue’s magnetization has decayed None . [The transmit bandwidth of the RF pulse affects:] Spatial resolution Slice thickness Image contrast a and b None . [Scan time for 2D IR pulse sequences can be calculated by:] TR × #PEs × NSA TR × #PEs × NSA × #slices TR × #PE’s × NSA/ETL TR × #shots × NSA None . [CNR is a factor that is measured.] True False None . [To correct for Gibbs artifact the:] Number of phase encodings is decreased Number of phase encodings is increased FOV is increased TE is decreased None . [In choosing the direction of phase encoding, the technologist usually considers the direction in which the:] Most signal is needed Scan time will not be affected Motion artifacts traverse the least tissue or areas of interest Resolution will not be distorted None . [On Figure arrow E is pointing to the:] Posterior horn of the lateral meniscus Posterior horn of the medial meniscus Anterior horn of the lateral meniscus Anterior horn of the medial meniscus None Comment . [On short TR/TE spin echo (or fast spin echo) imaging sequences, white matter appears:] Hyperintense to gray matter Hypointense to gray matter Hypointense to CSF Isointense to gray matter None . [The burden of proof for medical negligence rests with the:] Physician Patient Radiographer Risk manager None . [On Figure arrow F is pointing to the:] Subcutaneous fat Rectus abdominus muscles Oblique muscles Roof of the acetabulum None Comment . [When doing an MRA of the IVC, a saturation band should be placed _________ to the axial slices.] Anterior Posterior Superior Inferior None . [If the slice thickness increases, the spatial resolution (all other factors remaining constant):] Increases Decreases Stays the same Is not affected None . [On Figure arrow A is pointing to the:] Frontal lobe Parietal lobe Temporal lobe Sylvian fissure None Comment . [Patients who are at an increased risk of mild reactions to gadolinium are 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 . [On Figure arrow D is pointing to the:] Parietal bone Temporal bone Condyle of the mandible Mandibular fossa None Comment . [When venipuncture is performed:] The technologist is not responsible for obtaining patient history because the exam was ordered by a physician. The contrast agent should NEVER be flushed through the syringe, any tubing used, and the needle before injection The contrast agent must be cooled to make it easier to inject The contrast agent must ALWAYS be flushed through the syringe, any tubing used, and needle before injection to avoid the administration of air into the vein None . [Family members and ancillary personnel accompanying the patient into the scan room:] Need not be screened because they are not undergoing MRI Can enter the scan room to check on the patient but cannot stay during scanning Should be screened as if they are going through the procedure themselves Must wear a lead apron during the procedure None . Time's up
