TWIST

TWIST
 
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Features

  • Substantial reduction in gadolinium chelate dose
  • The ability to obtain multiple phases
  • No need for a test bolus (or any other kind of bolus timing)
  • iPAT in two directions with a factor up to 9 (optional with iPAT extensions)


Clinical Applications

  • Peripheral angiography (Better hemodynamic evaluation of stenosis and collaterals, elimination of venous contamination)
  • Dynamic cerebral MRA (Evaluation of cerebral AVMs, vascular malformations)
  • Dynamic carotid, vertebral MRA (steal phenomenon, stenosis, collaterals…)
  • Dynamic pulmonary MRA
  • Dynamic renal MRA
  • Dynamic mesenteric, portal MRA
  • Dynamic Aortography (Aortic dissection visualization, differentiation of false and true lumen with the help of dynamic MRA)


Additional Information
TWIST is based on special k-space sampling. In this setting, k-space is divided into two regions. The centrally located region of k-space provides information regarding image contrast, the peripherally located aspect of k-space contributes principally to high spatial resolution. The main factor contributing to the acceleration of the sequence acquisition in this particular imaging approach is the fact that k-space lines in the center are more frequently sampled than are the k-space lines in the periphery during the passage of the contrast medium bolus through the covered 3D volume.

General Requirements

System

Minimum Software Version

syngo MR B15
syngo MR D11

Other

Also available for:

MAGNETOM Prismafit

MAGNETOM Skyrafit

MAGNETOM Avantofit

Memory extension may be necessary
 

Please Note: Additional technical pre-requisites may apply. Upon receiving your request, your local Siemens representative will clarify whether your system meets the requirements.


Recommendations

Applications training

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