Fig. 1.

(a) Capillary plates. The capillary plate observed without magnification, MRI, and microscopy. We used pore sizes of 6, 12, 25, 50, and 100 μm. (b) Phantom case in cross section. Isothermal water can be circulated around the capillary phantom (green). Direct monitoring of the temperature in the case by inserting a temperature probe (yellow) into the case inlet or outlet. (c) Constant temperature measurement system layout. The water temperature was adjusted outside the MRI room and the isothermal water was circulated around the phantom case through insulated tubes.