B1 Correction Map

Class: NodeBOneCorrection

Node Icon

Use the double angle method to compute a B1 correction map. Two images are required. Flip angles (FAs) are detected automatically and it is important that all other parameter affecting the contrast, e.g. TE, is the same for both angles.

Produces a B1 - correction map.The map represents a scaling of flip angles, hence value 1 indicates that the nominal FA is achieved.


Angle 1

Input image.

Type: Image4DFloat, Required, Single

Angle 2

Input image.

Type: Image4DFloat, Required, Single


B1 Map

Resulting B1 map.

Type: Image4DFloat


    1. Wang, W. Mao, M. Qiu, M. B. Smith, and R. T. Constable, “Factors Influencing Flip Angle Mapping in MRI : RF Pulse and B 0 Inhomogeneities Measurement of Relative Flip Angles,” Magn. Reson. Med., vol. 56, no. 2, pp. 463–468, 2006

Keywords: B1, map, flip