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KMID : 1001220140160010027
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Journal of the Korean Society of Digital Medical Imaging Technology
2014 Volume.16 No. 1 p.27 ~ p.33
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A study on Hemo-Dynamic information Within 30 seconds in DCE 3D Breast MRI : Experienced Reports
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Goo Eun-Hoe
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Abstract
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The purpose of this study evaluated the hemo-dynamic information within 30 seconds clinically in 3D breast MRI. From January to March 2014, A total of 40 people were examined at 1.5 Tesla(Philips, Medical System, Achieva, The Netherlands) MRI equipments using 16 channel SENSE breast coil. The imaging parameters on vibrant are fellow as: TR/TE/FA°/Matrix size/Slice thickness/Slab(5 ms/2 ms/10°/180x139x2 mm/80). This study used a Gadovist and injected it with injection speed of 4 ml /sec by auto injector with 15 ml saline flushing. Firstly, for the delay time study, it divided three different delay time from immediately, 20 seconds, and 30 seconds. In quantitative analysis, the ROI signal intensities of tumor and surrounding tissues were measured retrospectively. In qualitative analysis, the image quality was scored
from 1 to 5 point by one experienced radiological technologists as a visual test. The significance level of each delay time was evaluated with a one-way ANOVA(p<0.05). In the visual test, score levels on 30 seconds delay time was a little bit higher than others(p<0.05). The signal intensity of the tumor were 1445 ± 360, 1410 ± 320, 1510 ± 415 on immediately, 20 seconds, and 30 seconds and score levels were 4.18 ± 0.85, 3.54 ± 0.94, 4.45 ± 0.74(p<0.05). The data on immediate images showed better results than that others(p<0.05). Conclusively, Although it has been high scored in 30sec delay time for visual test in order to avoid failure in 20second, 30seconds delay time after contrast media administration, we recommend that the DCE 3D breast MRI commence immediately.
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KEYWORD
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Vibrant, Dynamic Contrast Enhancement, Breast MRI
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