Table.1.

Spiral sampling parameters on a whole-body 7T scanner.

Image matrix size	Resolution (mm)*	Spiral interleaves	Spiral readout (ms)**	Spiral Efficiency***
256×256	0.86	64	3.440	4
		32	5.920	8
		16	11.040	16
512×512	0.43	192	4.400	2.7
		128	5.920	4
		64	10.560	8
		34	19.020	15
1024×1024	0.22	512	6.240	2
		256	10.300	4
		128	20.160	8

^*It is actually a nominal resolution at a field of view of 220 mm.

^**The readout is calculated at a gradient of 36 mT/m and a slew rate of 153 mT/m/ms.

^***The efficiency is referred to as a ratio of the number of phase encodings for a rectangular sampling to the number of spiral interleaves.