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Hepatobiliary/GI New Technologies

Avanto for Abdominal Imaging

With the new 1.5T Avanto system a built-in 8 x 3 matrix array spine coil and one to two 2 x 3 torso matrix can be used for improved signal-to-noise and better iPAT capabilities. For clinical imaging, iPAT x 2 can be routinely used to produce excellent image quality and in acquisition times approximately 60% of ordinary sequences. Sample images from a routine liver protocol are shown below, all using the Avanto system and standard sequences.

Sample Case: A middle-aged woman with two masses detected on ultrasound.

(Click movie to play/stop)

Fat-suppressed TSE using iPAT factor of 2; 20 slices in acquisition time 13.3 sec.
TR/TE/FA 4350/95/180, ETL 29, BW 260, matrix 244 x 512, FOV 279 x 350 mm
Dual-echo (TE 2.4 and 5 msec) T1-weighted gradient echo using iPAT factor of 2; 20 x 2 slices in acquisition time 11.6 sec.
TR/TE/FA 175/2.4-5.0/80, BW 375, matrix 290 x 512, FOV 305 x 375 mm


Fat-suppressed 3D gradient echo (VIBE) using iPAT factor of 2 and 96 interpolated partitions; acquisition time 12 sec. Source data in the arterial phase (left) and coronal reformatting of the same data set (right) are shown.
TR/TE/FA 3.3/1.5/12, fat suppressed,BW 490, matrix 168 x 320 x 96 (interpolated), FOV 281 x 375 x 192 mm (96 partitions interpolated to 2 mm)

 


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