Rolf Janka1, Evelyn Wenkel1,
Christian Geppert2, Berthold Kiefer2, Michael Uder1
1Radiology, Universitity of Erlangen,
Erlangen, Bavaria, Germany; 2Siemens Medical Solutions
The
TWIST sequence divides k-space in two radial regions and samples it using a
pseudo-stochastic trajectory at adjustable density. While the central region
is sampled at the full temporal resolution, the periphery is sampled with
reduced density. Its main field of application is an increase of temporal
resolution in MR-angiography. But it can also be used to increase spatial
resolution in the dynamic sequence of breast MRI. We tested the new sequence
in 61 women and think it is a reliable and powerful tool in breast imaging
which fulfil the requirements of both high temporal and spatial resolution.