Table 2.
T2 measurements (mean ± SD) of arterial wall and plaque tissues
Study | Field strength | Num. of TEs | Num. of plaques | Location | LRNC [ms] | Fibrous tissue [ms] | Intima & media [ms] | Ref. |
---|---|---|---|---|---|---|---|---|
in-vivo |
3 T |
7 |
15 |
carotid |
37 ± 5 |
56 ± 9 |
54 ± 13 |
*This study |
in-vivo |
1.5 T |
2 |
7 |
carotid |
28 ± 6 |
51 ± 10 |
48 ± 7 |
[16] |
ex-vivo |
1.5 T |
2 |
7 |
carotid |
31 ± 5 |
51 ± 9 |
52 ± 7 |
[16] |
ex-vivo |
1.5 T |
8 |
10 |
carotid |
47 ± 14 |
60 ± 13 |
67 ± 23 |
[17] |
ex-vivo |
1.5 T |
4 |
10 |
carotid |
84 ± 41 |
95 ± 32 |
60 ± 6 |
[18] |
ex-vivo |
9.4 T |
7 |
3 |
carotid |
35-49 |
48-60 |
72-76 |
[19] |
ex-vivo |
4.7 T |
4 |
7 |
coronary |
31 ± 7 |
55 ± 11 |
50 ± 10 |
[20] |
ex-vivo |
1.5 T |
10 |
8 |
various |
55 ± 3 |
79 ± 4 |
81 ± 3 |
[21] |
ex-vivo |
4.7 T |
10 |
8 |
various |
50 ± 3 |
63 ± 1 |
65 ± 2 |
[21] |
ex-vivo |
9.4 T |
20 |
8 |
various |
20 ± 3 |
30 ± 2 |
30 ± 3 |
[21] |
ex-vivo |
1.5 T |
32 |
13 |
various |
< 20 |
100-200 |
68 ± 10 |
[22] |
ex-vivo | 3 T | 7 | 14 | aorta/iliac | 54 ± 3 | 89 ± 6 | 76 ± 9 | [23] |
*Fibrous tissue and normal arterial wall cannot be discriminated in-vivo by T2 alone. This study measured the T2 values of tunica intima and media in 14 normal arteries, while both fibrous tissue and normal arterial wall of the 15 atherosclerotic arteries were categorized together as fibrous tissue.