Imaging Procedures (ARMRIT) Exam 1 (100% correct and graded A+)

On T1-weighted pulse sequences the spinal cord will exhibit _______ signal intensity relative to the surrounding cerebral spinal fluid. - Answer-higher When employing a surface coil the signal intensity: - Answer-decreases as anatomy gets farther from the coil On T1-weighted images of the cervical and thoracic spines which of the following anatomic structures will display the highest signal intensity? - Answer-the cord Normal bone marrow is hyper-intense on T1-weighted images due to the presence of: - Answer-fat Truncation artifact on T1-weighted spinal cord imaging may be falsely interpreted as: - Answer-a syrinx Optimum T2* gradient echo imaging of the spine is utilized to elicit _______ signal in the thecal sac. - Answer-a hyper-intense The best imaging plane for visualization of the neural foramina is: - Answer-parallel to the intervertebral discs Evaluation of the spine for suspected intramedullary cord lesions, including tumors, infarct, demyelination and contusion, should always include: - Answer-T2 spin echo imaging Reducing artifact from the pulsatile cerebral spinal fluid flow in spinal cord imaging can be accomplished by employing all of the following techniques EXCEPT: - Answer-reducing the number of acquisitions to reduce scan time Coronal images may be needed for spinal cord screening in patients with: - Answer-scoliosis The use of surface coils for spine imaging facilitates: - Answer-an increase in spatial resolutionContrast enhanced MR imaging of the post operative spine is very reliable in detecting: - Answerepidural fibrosis Routine cervical spine imaging for suspected stenosis should be done with the patient in cervical extension. (True / False) - Answer-false The presence of ligamentum flavum hypertrophy can result in clinically significant: - Answer-spinal stenosis Screening images of the spinal cord are routinely done in the _______ plane. - Answer-sagittal In MR imaging of the cervical spine, the anatomic detail of the neural foramina are best visualized using: - Answer-gradient echo scans in the axial plane On T1-weighted pulse sequences, the spinal cord exhibits _______ signal intensity relative to the surrounding cerebral spinal fluid. - Answer-higher The degree of compromise of the cervical nerve roots secondary to osteophytes is best evaluated using: - Answer-gradient echo scans in the axial plane Frequency encoding in sagittal spine imaging is usually oriented along the long axis of the spine to reduce: - Answer-aliasing