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. 2022 Mar 2;16(2):021015. doi: 10.1115/1.4053688

Fig. 7.

Accurate and reliable needle positioning. The device was tasked with positioning the needle tip to a target location selected from the ultrasound image display. (a) Example ultrasound image of the final needle tip position with respect to the desired target (yellow). Red line depicts the needle trajectory path through the ultrasound imaging plane. (b) Results from needle positioning trials (n = 25). All final needle tip positions (gray dots) centered around the desired target (0,0) coordinate. (c) Bar chart showing the mean and distribution of the Euclidean needle placement error from the center (0,0). This error is the average difference between all final needle positions and their desired target.

Accurate and reliable needle positioning. The device was tasked with positioning the needle tip to a target location selected from the ultrasound image display. (a) Example ultrasound image of the final needle tip position with respect to the desired target (yellow). Red line depicts the needle trajectory path through the ultrasound imaging plane. (b) Results from needle positioning trials (n = 25). All final needle tip positions (gray dots) centered around the desired target (0,0) coordinate. (c) Bar chart showing the mean and distribution of the Euclidean needle placement error from the center (0,0). This error is the average difference between all final needle positions and their desired target.