Table 2.

Various study groups of population that underwent the different amounts of compression. Note that #C denotes number of patient undergoing chemotherapy and #M denotes number of patients with suspicious or unknown mass who were also scheduled to undergo biopsy. The third and fourth columns give the mean registration error (mm) in registering the grayscale portion of the Doppler image volume (DI-G pair) and the corresponding mean CSV (mm) of registered image volume pair. The fifth column gives the change in BVO with registration.

Doppler study type	#Scan pairs on #patients	MRE (mm)	CSV (mm)	Change in BVO
Reproducibility	4 on 3C	0.6±0.4	0.7±0.3	0.59–0.77 (+31%)
More compression	7 on 2C,5M	1.2±0.5	1.8±0.6	0.15–0.47 (+213%)
Less compression	4 on 1C,1M	1.6±0.9	1.8±0.8	0.33–0.62 (+88%)