Functional vessel model having temperature indicator for surgical simulator

This paper reports temperature indicator for surgical simulator and temperature calculation method using image processing for visualization of temperature increase and distribution in the arterial biological model. The indicator consists of polydimethylsiloxane (PDMS) and thermochromic pigment presenting non-reversible color change according to temperature. The indicator has transparency to observe the catheter inside the model during simulation. Temperature of color indicator is calculated from the color change using several color spaces such as YCrCb color space. The range of the temperature measurement is from 50 to 110 degree of C. The accuracy of the temperature measurement is approximately ±2.0 °C. Temperature distribution of ablated model was measured (Ablation temperature: 90 °C.). Finally, temperature change measurement of ablated renal vessel model was demonstrated.