Table 1.

Gd concentrations obtained via iMSI as a proxy for dystrophin expression.

Sample source	Expected dystrophin expression	Gadolinium concentrationa	CV
WT mouse	Normal	736b,c	10b
mdx mouse	Absent	85.0	20.5
Healthy 1	Normal	382b,c	19b
Healthy 2	Normal	286b	17b
DMD 1	Low	99.2	nad
DMD 2	Low	86.5	nad
DMD 3	Very low	< LLOQ	nad
DMD 4	Low	100	nad

LLOQ lower limit of quantification.

^aµg kg⁻¹ gadolinium.

^bn = 7 consecutive muscle sections.

^cOutlier removed after Grubb’s test (g_crit = 1.938 for n = 7).

^dSingle sections were analyzed from these samples so CV is not applicable (na).