Validation Results
The validation of the measurement setup showed that the force measured by the system correlates very well with the true force exerted on the platform (R2 = 0.999, n = 35). The absolute measurement error was low with a mean of 0.34g ±0.39g, including the error of the scale. A linear model with \(y=\ 0.992x-0.151\) best fits the data and reflects the friction of the measurement system. All catheter measurements were adjusted accordingly, by using this linear model.