Start and End locations

Start and End

Together, the Start and End locations determine the area covered in the scan and can be prescribed explicitly or graphically.

The system acquires the data in the order of the slices prescribed and automatically calculates the actual end location and the number of locations. This is based on scan thickness and the interscan spacing selected. The actual end location is displays in the Scan Parameters area.

Center

The FOV Center defines the center of an image. Ideally, this is located at the magnet’s isocenter.

An off-center FOV (Field Of View) is an FOV that is not centered at isocenter. This is accomplished by typing in appropriate numbers at the Start and End fields in the Scan Parameters area or using Graphic Rx. The FOV Center defaults to zero unless otherwise specified.

FOV center offsets can be done in the phase and frequency directions. In axial, sagittal, and coronal image prescriptions, two offsets are allowed. The system accommodates for any offset in the S/I direction by means of a table movement.