TABLE 4.

Low‐contrast detectability measurements and evaluation with American College of Radiology (ACR) and TG‐284 quality assurance (QA) tolerances

Image series	Slice number	Total number of spokes	ACR a	TG‐284 b
ACR T1	8‐11	40	PASS	PASS
ACR T2	8‐11	38	PASS	FAIL

^a ACR passing criteria for LCD were 37 or more total spokes. ²

^b TG‐284 LCD passing criteria for a 3.0 T scanner were 40 total spokes. ²