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Table 1 Summary of the imaging sequence applied for sensitivity analysis

From: Comparison of diffusion tensor imaging by cardiovascular magnetic resonance and gadolinium enhanced 3D image intensity approaches to investigation of structural anisotropy in explanted rat hearts

Ref#

Imaging Parameters

Start time a

Type

n-dir

b-value (s /mm 2 )

Scan duration b

1

2:00

DTI

6

1000

1:50

2

3 :50

DTI

12

1000

3:56

3

7:46

DTI

6

1000

1:50

4

9:36

DTI

12

500

3:56

5

13:32

DTI

6

1000

1:50

6

15:22

DTI

12

2000

3:56

7

19 :18

DTI

6

1000

1:50

8

21:08

T1W

NA

NA

18:12

9

39:20

DTI

6

1000

1:50

10

41:10

DTI

12

1500

3:56

11

45:06

DTI

6

1000

1:50

12

46:57

T1W

NA

NA

18:12

13

65:09

DTI

6

1000

1:50

14

66:59

DTI

12

2500

3:56

15

70:55

DTI

6

1000

1:50

  1. The first scan was carried out at 2 h and subsequent serial scans were carried out without moving the heart in the scanner. A baseline scan taking 1 h 50 m for 6 diffusion directions at b = 1000 s:mm2 was performed at serial time-points throughout the imaging study to explore any changes in diffusion as a result of time elapsed from killing/perfusion fixation. Interspersed between these baseline scans two T1W FLASH scans were performed at 50 × 50 × 50 μm resolution, as well as a series of diffusion scans with different numbers of directions and different b-values. All diffusion scans were at 200 × 200 × 200 μm resolution. Ref #: reference number for this scan; a– time post-fixation (h:min); bduration (h:min); Type: DTI - diffusion tensor magnetic resonance imaging; T1W is T1-weighted FLASH; FLASH: fast low angle shot; n-dir: number of diffusion directions; NA: not applicable.