2017 Imaging for Physicists Coursebook

Image aqusition

Imaging Procedure • Localizer • Anatomic sequences T1, T2 weighted imaging

• Variable Flip angle (VFA) T1 weighted imaging (T1 fitting) (a) • 3D Gradient echo volumetric imaging (dynamic imaging) (b)

(a) A variable flip angle series, for pre-contrast agent native tissue T 1,0

mapping.

• • •

Ensure TR and TE values stay constant for all flip angles,

Flip angles: The range of # of flip angles supported in the literature varies from 2-7.

Number of signal averages (NSA or NEX) > 2.

(b). DCE-MRI Protocol: Pulse Sequence: •

Pulse Sequence: 3D fast spoiled gradient recalled echo or equivalent Coils: Transmit: Body coil; Receive: Body coil or phased array receive coil

•

No parallel imaging options?????? No magnetization preparation schemes

http://www.rsna.org/QIBA_.aspx