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Table 1 MR derived measurements of signal intensity (SI) and perfusion values

From: Hyperemic stress myocardial perfusion cardiovascular magnetic resonance in mice at 3 Tesla: initial experience and validation against microspheres

N

Scan

AIF SI baseline

AIF SI max

Enhancement ratio

LV SI baseline

LV SI max

Enhancement ratio

MBF/ml/g/min

MPR

1

stress*

115 ± 24

2220 ± 412

18.30

81 ± 20

945 ± 210

10.67

9.2

2.71

 

rest

113 ± 27

2199 ± 460

18.46

116 ± 26

650 ± 144

4.60

3.4

 

2

stress

170 ± 36

1780 ± 330

9.47

146 ± 29

1021 ± 243

5.99

8.7

2.12

 

rest*

159 ± 29

1602 ± 313

9.08

111 ± 22

440 ± 97

2.96

4.1

 

3

stress*

83 ± 18

1690 ± 331

19.36

66 ± 15

580 ± 106

7.79

12.5

2.98

 

rest

138 ± 26

1637 ± 362

10.86

125 ± 26

490 ± 99

2.92

4.2

 

4

stress

137 ± 35

1777 ± 367

11.97

100 ± 23

704 ± 142

6.04

6.2

1.59

 

rest*

97 ± 26

1616 ± 369

15.66

122 ± 27

520 ± 102

3.26

3.9

 

5

stress*

84 ± 19

1804 ± 391

20.48

64 ± 16

684 ± 121

9.69

11.6

2.42

 

rest

138 ± 22

1832 ± 393

12.28

125 ± 23

489 ± 94

2.91

4.8

 

Mean

Stress

118 ± 37

1854 ± 209

15.92 ± 4.89

91 ± 34

787 ± 187

8.04 ± 2.12

9.64 ± 2.5

2.36 ± 0.54

Mean

Rest

129 ± 24

1777 ± 254

13.27 ± 3.78

120 ± 6

518 ± 79

3.33 ± 0.72

4.08 ± 0.5

 
  1. * denotes which scan was performed first.
  2. LV Left ventricle.
  3. AIF Arterial input function.
  4. MBF Myocardial blood flow.
  5. MPR Myocardial perfusion reserve.