TABLE 2.

Relative Image Noise as a Function of Patient Width and Modulation Strength (b)

Patient Width, cm	Modulation Strength (b)
	0.30	0.50	0.70	1.00
12	87%	138%	218%	435%
20	91%	124%	168%	267%
28	95%	111%	130%	163%
36	100%	100%	100%	100%
44	105%	90%	77%	61%
50	109%	83%	63%	42%

All values were normalized to the image noise achieved using our clinical technique chart (b = 0.36). Calculations were performed using Eqs. (9) and (10) and a reference patient width of 36 cm.