Table 3.

Interstudy repeatability of MBF measurements – by slice and coronary artery territory

	Test 1 ml/g/min		Test 2 ml/g/min		Difference in mean ml/g/min		p	RC	RC (%)	CV (%)	ICC
Rest
Global	0.64	±0.13	0.64	±0.15	0.004	±0.10	0.8	0.20	31.5	11.3	0.74
Basal	0.66	±0.14	0.67	±0.16	0.015	±0.13	0.46	0.25	37.7	13.6	0.65
Mid	0.64	±0.14	0.64	±0.15	−0.003	±0.10	0.87	0.20	31.0	11.2	0.76
Apex	0.60	±0.13	0.60	±0.15	−0.003	±0.10	0.86	0.20	33.4	11.5	0.73
P	0.13		0.089
LAD	0.69	±0.16	0.68	±0.16	−0.003	±0.11	0.86	0.22	32.2	11.7	0.75
Cx	0.60	±0.13	0.60	±0.14	0.005	±0.11	0.74	0.20	34.0	11.8	0.70
RCA	0.61	±0.12	0.62	±0.15	0.01	±0.11	0.59	0.22	35.6	12.6	0.66
P	0.01*		0.04*
Stress
Global	2.71	±0.61	2.55	±0.57	−0.161	±0.43	0.12	0.87	33.1	12.2	0.72
Basal	3.01	±0.80	2.80	±0.74	−0.209	±0.51	0.09	1.05	36.1	13.2	0.76
Mid	2.48	±0.55	2.39	±0.51	−0.092	±0.44	0.38	0.86	35.4	13.4	0.66
Apex	2.62	±0.65	2.42	±0.56	−0.201	±0.62	0.17	1.24	49.2	16.3	0.48
P	0.05		0.07
LAD	2.79	±0.61	2.62	±0.55	−0.167	±0.39	0.08	0.82	30.3	10.8	0.75
Cx	2.69	±0.61	2.51	±0.66	−0.180	±0.47	0.12	0.97	37.3	15.4	0.71
RCA	2.53	±0.61	2.44	±0.56	−0.096	±0.47	0.39	0.92	37.0	13.6	0.68
P	0.442		0.629
MPR
Global	4.24	±0.69	3.73	±0.76	−0.214	±0.76	0.25	1.46	36.4	13.3	0.46
Basal	4.53	±0.90	4.27	±1.00	−0.262	±0.89	0.23	1.78	40.4	15.3	0.55
Mid	3.84	±0.70	3.73	±0.66	−0.113	±0.83	0.57	1.60	42.4	15.5	0.26
Apex	4.42	±0.90	4.12	±0.76	−0.293	±1.04	0.25	2.06	48.1	16.0	0.30
p	0.047*		0.130
LAD	3.96	±0.58	3.83	±0.81	−0.128	±0.71	0.45	1.35	35.3	13.1	0.50
Cx	4.47	±0.93	4.14	±0.93	−0.325	±0.86	0.13	1.76	40.8	15.7	0.54
RCA	4.06	±0.76	3.91	±0.66	−0.150	±0.89	0.49	1.72	43.3	15.7	0.23
p	0.118		0.480

RC repeatability coefficient, RC (%)repeatability coefficient as percentage of the mean, CV within subject coefficient of variation, ICC intraclass correlation coefficient

p – level of significance using Student’s T-test

*=significant at p < 0.05