The present invention provides a chiller-less cooling system and method for an interventional detector. A cooling method comprises using a heat pipe 12 to connect a tray 101 and a lift frame 102 of a detector housing 10 so as to reduce a thermal resistance between the detector tray 10 and the lift frame 102 and transfer more heat from the detector using an external heat sink 13 connected with the heat pipe 12 so as to reduce a thermal resistance between the lift frame 102 and an ambient environment and embedding a high heat transfer coefficient device 11 into the detector tray 10 so as to collect heat leading to the heat pipe 12, obtain a uniform temperature distribution, and reduce a thermal resistance of the detector tray 10. Another cooling method comprises using a loop heat pipe 14 to connect the detector tray 10 and a C-arm 20 of an interventional imaging system embedding a condenser end 141 of the loop heat pipe 14 into the detector tray 10 embedding a evaporator end 142 of the loop heat pipe 14 into a heatspreader which is fixed onto the C-arm 20. The present invention further discloses a method for cooling a detector using a fan/heat sink/loop heat pipe module 30 in a C-arm 20.
