439349.fig.005a
(a)
439349.fig.005b
(b)
439349.fig.005c
(c)
Figure 5: Ultrasound microimaging around the left kidney (a) and Doppler flow measurement at the abdominal aorta (b) and renal artery (c). Appropriate positions of the abdominal aorta, renal artery, and renal vein observed with the ultrasound imaging device are indicated in (a). The blood flow of the abdominal aorta indicated by the arrow in (a) is shown in (b). The blood flow of the renal artery indicated by the arrow in (a) is shown in (c). Doppler flow data show unidirectional (b) and oscillating (c) flow patterns in the abdominal aorta and renal artery, respectively. Note that the waveform of the renal artery indicated in (c) is the opposite of that for the abdominal aorta in (b) because of the position of the ultrasound probe.