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syngo TWIST – The 4th Dimension in MRA
What is syngo TWIST
Siemens has made 3D dynamic imaging available in the late 90s for the MAGNETOM Vision. The speed of dynamic imaging got an extra boost with the strong 40 mT/m gradients available with the introduction of MAGNETOM Sonata. Since then, dynamic imaging has gone through several changes and improvements, including the expansion of parallel imaging with the Tim (Total imaging matrix) technology, and more recently, the new k-space coverage now available with the syngo TWIST, our new application for 4D MRA. syngo TWIST achieves significant improvements in temporal and spatial resolution and faster tracking of dynamic processes relative to the other versions of dynamic imaging introduced earlier. syngo TWIST offers a practical, flexible, and elegant way to perform sub-second, time-sequential 3D measurements, both at 1.5T and 3T field strengths. This can be used in combination with contrast injection to provide dynamic clinical information, including the evaluation of abnormal vascular anatomy as well as vascular hemodynamics, and perfusion measurements.
Clinical applications
There are many benefits of using dynamic syngo TWIST for clinical applications. These include:
- Better detection of vascular diseases such as in arteriovenous malformations (AVM) or shunts by providing the dynamic information.
- Better assessment of vascular diseases such as in peripheral obstructive artery disease (POAD) or steal phenomenon by visualizing the hemodynamics.
- Smaller amounts of contrast agent required for the contrast enhancement study.
- Complete elimination of venous contamination even in abnormal hemodynamic states.
syngo TWIST is a versatile technique that can be adjusted to all imaging needs of time-resolved contrast-enhanced MRA including high spatial and temporal resolution.
syngo TWIST is available for all systems with Tim technology. syngo TWIST is fully compatible with parallel imaging (syngo GRAPPA or mSENSE) thus allowing subsecond 3D acquisitions with reasonable spatial resolution. The syngo TWIST acceleration can be up to 20 times compared to a standard, full k-space acquisition. Furthermore, syngo TWIST is compatible with the Inline angio card to allow fast processing similar to the standard angio sequences.
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