. Author manuscript; available in PMC: 2020 Jun 2.

Published in final edited form as: Magn Reson Med. 2015 Apr 27;75(3):1018–1029. doi: 10.1002/mrm.25636

Table 4.

Results of Bland-Altman Analyses, Performed Between Each MR Modality and Doppler Ultrasound for Each of Three Indices Considered^a

Measured Parameter	Two Modalities	Number of Subjects	Bias	Agreement Limits
Peak velocity	DUS and C4DF	4	10.25	(−36.83, 57.33)
	DUS and 4DSF	4	2.75	(−31.85, 37.35)
Time to peak	DUS and C4DF	4	−5.75	(−65.31, 53.81)
	DUS and 4DSF	4	−6	(−65.47, 53.47)
AV Eject time	DUS and C4DF	4	−16.25	(−53.24, 20.74)
	DUS and 4DSF	4	−20	(−76.01, 36.01)

AV, aortic valve; 4DSF = four-dimensional spiral flow, C4DF = conventional 4D flow; DUS = Doppler ultrasound.

Peak velocity; time to peak; AV eject time.