The area under a curve can be estimated by dividing it into triangles, rectangles and trapeziums. If we have a speed-time or velocity-time graph, the distance travelled can be estimated by finding ...

ROC Curves: Sensitivity and Specificity of Various Velocity Criteria Peak Systolic Velocity. As noted in Table 6, a PSV of = 155 cm/s was optimal in detecting = 30% in-stent restenosis ...

Unfortunately, as the authors point out, published studies of PSA dynamics are heterogeneous with regard to the type of PSA kinetic (for example, PSA doubling time versus PSA velocity), method of ...