Fig 2.

A representative sample in which SS-GRE is better than TSE-T2 for localizing the ventricular catheter tip. The upper row has TSE-T2-weighted MR images; and the lower row, SS-GRE MR images. The catheter is inserted from a right frontal approach and travels posterolaterally to the left. On TSE-T2-weighted MR images, the exact delineation of the catheter is not certain. On SS-GRE MR images, the entirety of the catheter can be identified with its tip ending in the left posterior periventricular white matter (curved arrow).