Point of care renal ultrasonography for the busy nephrologist: A pictorial review

Figure 4 Orientation of the image. A, B: Ultrasound image of the (A) longitudinal and (B) transverse views of the right kidney demonstrating the image orientation; C, D: Cartoon illustrating that echoes returning from a structure that is farther from the probe take longer time compared to those returning from the structure that is closer to the probe and that farther structure is portrayed at the bottom of the screen and the nearer one on the top. Note that the arrow in Figure 4A points to the probe marker and the green dot represents indicator on the screen.