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C-2609 - Routine unenhanced MRI for maximal diameters of thoracic aorta?

D. Palionis, N. Valeviciene, S. Glaveckaite; Vilnius/LT Type: Scientific Exhibit
Area of Interests: Cardiac, Vascular, Cardiovascular system
Imaging Techniques: Ultrasound, MR, MR-Angiography
Procedures: Computer Applications-3D, Angioplasty, Arterial access
Special Focuses: Aneurysms, Hypertension, Connective tissue disorders
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Aims and objectives: To compare maximal measurements of thoracic aorta in unenhanced "black-blood" (BB) and "white-blood" (WB) MRI images vs. contrast enhanced T1 MR angiography (MRA) and echocardiography (US).

Methods and materials: 61 patients were analysed (32.5±1.9 years, 41 males and 20 females). Following segments were selected for measurements in unenhanced axial MRI images: aortic sinuses, ascending aorta, arch’s T2, descending and diafragmal. MRI chest scans in axial T2-Haste (BB) and T2-Trufi (WB) sequences were o[...]

Results: Following Pearson correlations (R values) were determined for aortic sinuses: BB&WB 0.83, BB&C+ 0.77, WB&C+ 0.77, US&C+ 0.68; ascending aorta: BB&WB 0.96, BB&C+ 0.95, WB&C+ 0.97, US&C+ 0.69; arch T2 segment: BB&WB 0.94, BB&C+ 0.85, WB&C+ 0.81; descending a[...]

Conclusion: Strong and very strong correlation was found between unenhanced and C+ MRI. Best correlation was in ascending and diafragmal level of aorta, which is likely to good anatomical-perpendicular position to axial scanning plane. No advantage was determined comparing BB and WB sequences. US data less corr[...]

Personal information: D. Palionis, N. Valeviciene - Centre of Radiology and Nuclear Medicine, Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania S. Glaveckaite - Centre of Cardiology and Angiology, Vilnius University Hospital Santariskiu Klinikos, Vilnius, Lithuania   All authors - Faculty of Med[...]

References: 1. Potthast S, Mitsumori L, Stanescu LA, Richardson ML, Branch K, Dubinsky TJ, et al. Measuring aortic diameter with different MR techniques: Comparison of three-dimensional (3D) navigated steady- state free-precession (SSFP), 3D contrast-enhanced magnetic resonance angiography (CE-MRA), 2D T2 black[...]

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