Why the study?
Can MRI tagging using the selective saturation pulse method estimate precise left-ventricular wall motion?
Can MRI tagging using the selective saturation pulse method estimate precise left-ventricular wall motion?
MRI tagging with selective saturation pulses provides a non-invasive method to track and animate precise left ventricular wall motion.
Provides technical basis for MRI tagging to visualize LV motion; leaves open clinical validation for precise wall motion estimation.
We have developed a left-ventricular (LV) wall motion analysis method and a display method of the LV wall motion. To know the precise wall motion, such as its rotation or deformity, identifiable landmarks must be located on the heart. MRI tagging makes it possible to estimate the regional wall motion non-invasively. Tagging is achieved by the selective saturation pulse method. We tried to estimate the precise LV wall motion by MRI tagging. The difference in the signal intensity between the tagged and non-tagged regions persisted for 400-700 ms. We displayed the tag-point movement of the LV wall as an animation.
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Yamamoto et al. (2002) studied this question.
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