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C-2036 - Imaging strategies for uncooperative patients

J. Cruz1, R. Lameiras2, F. D. Figueiredo1, J. Felício Costa1, A. Matos3, R. Semelka4, M. Ramalho1; 1 Almada/PT 2 036 Amadora/PT 3 Lisboa/PT 4 Chapel Hill, NC/US Type: Educational Exhibit
Area of Interest: Abdomen
Imaging Technique: MR
Procedures: Imaging sequences, Technical aspects
Special Focuses: Education and training, Quality assurance
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Learning objectives: · To understand the importance of different motion-resistant magnetic resonance (MR) sequences on imaging uncooperative patients, especially those who can't suspend respiration. · Get familiar with different types of abdominal motion-resistant MR imaging protocols.

Background: Motion artifacts, especially caused by respiratory motion, are considered the greatest source of problem for obtaining high quality MR studies, causing image degradation, potentially obscuring important anatomic structures and lesions. Elderly, multimorbid or acutely ill patients, children and peopl[...]

Findings and procedure details: The authors present the most recent technology developments on fast imaging protocols to abdominal MRI, based on current literature review.  

Conclusion: With the newer MR techniques, it is possible to obtain consistent high T1 and T2-weighted imaging quality even in uncooperative patients, especially in those who are not able to follow breath-hold instructions or remain still for the entire image acquisition time. Recent data supports that in the fu[...]

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References: Azevedo R, Campos R, Ramalho M, Herédia V, Dale BM, Semelka RC. Free-Breathing 3D T1-Weighted Gradient-Echo Sequence with Radial Data Sampling in Abdominal MRI: Preliminary Observations AJR 2011; 197:650–657; http://doi.org/10.2214/AJR.10.5881 Bieri O, Scheffler K. Fundamentals of Balanced Stead[...]

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