Acute Myocardial Infarction:Comparison of T2‐Weighted and T1‐Weighted Gadolinium‐DTPA Enhanced MR Imaging
| Autor: | Paul R. M. D Van Ijkman, Albert V.G. Bruschke, Joost Doornbos, Ernst E. Der Van Wall, Ad E. van Voorthuisen, Niels A. A. Matheijssen, Albert de Roos |
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| Přispěvatelé: | Radiology and nuclear medicine |
| Jazyk: | angličtina |
| Rok vydání: | 1991 |
| Předmět: |
Adult
Gadolinium DTPA Time Factors Myocardial Infarction Contrast Media Gadolinium 030204 cardiovascular system & hematology 030218 nuclear medicine & medical imaging Spin–spin relaxation 03 medical and health sciences 0302 clinical medicine Nuclear magnetic resonance Organometallic Compounds medicine T1 weighted Humans Radiology Nuclear Medicine and imaging Myocardial infarction Aged medicine.diagnostic_test Chemistry business.industry Myocardium Echo time Magnetic resonance imaging Middle Aged Pentetic Acid Image Enhancement medicine.disease Magnetic Resonance Imaging Mr imaging T2 weighted Nuclear medicine business |
| Zdroj: | Matheijssen, N A A, de Roos, A, Van Wall, E E D, Doornbos, J, Van Ijkman, P R M D, Bruschke, A V G & van voorthuisen, A E 1991, ' Acute Myocardial Infarction : Comparison of T2-Weighted and T1-Weighted Gadolinium-DTPA Enhanced MR Imaging ', Magnetic Resonance in Medicine, vol. 17, no. 2, pp. 460-469 . https://doi.org/10.1002/mrm.1910170217 Magnetic Resonance in Medicine, 17(2), 460-469. John Wiley and Sons Inc. |
| ISSN: | 0740-3194 |
| Popis: | Magnetic resonance images were obtained from 32 patients with acute myocardial infarction, using a four-echo technique (echo time (TE) = 30, 60, 90, and 120 ms) pregadolinium(Gd)-DTPA injection and a TE = 30 ms sequence pre- and post-Gd-DTPA. Intensity ratios of infarcted and normal myocardium were calculated, as were contrast-to-noise and signal-to-noise ratios. The four intensity ratios pre-Gd-DTPA were 1.20 +/- 0.15, 1.42 +/- 0.22, 1.78 +/- 0.38, and 1.99 +/- 0.60 for TE = 30, 60, 90, and 120 ms, respectively, and 1.42 +/- 0.19 post-Gd-DTPA (p = NS for post-Gd-DTPA vs TE = 60, p = 0.007 for TE = 90 vs TE = 120, p less than 0.0001 for all other comparisons). The four contrast-to-noise ratios pre-Gd-DTPA were 1.69 +/- 0.97, 2.69 +/- 1.13, 3.17 +/- 1.15, and 2.90 +/- 1.09 for TE = 30, 60, 90, and 120 ms, respectively, and 2.71 +/- 1.26 post-Gd-DTPA (p = NS for post-Gd-DTPA vs TE = 60, 90, and 120, p = NS for TE = 120 vs TE = 60 and 90, p less than 0.01 for all other comparisons). The four signal-to-noise ratios pre-Gd-DTPA were 8.67 +/- 1.47, 6.52 +/- 0.76, 5.20 +/- 0.64, 4.17 +/- 0.53 for TE = 30, 60, 90, and 120 ms, respectively, and 9.17 +/- 1.92 post-Gd-DTPA (p = 0.03 for post-Gd-DTPA vs TE = 30, p less than 0.0001 for all other comparisons). In conclusion, the detectabilities of acute myocardial infarction were similar at TE = 60 ms and at Gd-DTPA enhanced short-TE MR imaging. However, image quality proved to be superior using the Gd-DTPA enhanced short-TE technique. |
| Databáze: | OpenAIRE |
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