A microwave ablation device, comprising:a radiating section (12, 316, 318) ；a microwave feedline (14) having a proximal portion and a distal portion, the distal portion terminating in the radiating section；a cooling assembly (50, 16, 18) having a proximal portion and a distal portion, the distal portion of the cooling assembly configured to cool the radiating section；a handle assembly (60) fluidly enclosing a portion of the microwave feedline and the cooling assembly；a tubular member (30) having a distal radiating end and extending from the handle assembly, the tubular member enclosing the distal portion of the microwave feedline and the distal portion of the cooling assembly；a flexible cable assembly (15) operatively coupled to the handle assembly and enclosing the proximal portion of the microwave feedline, the flexible cable assembly configured to connect the microwave feedline to an energy source； anda temperature sensing system associated with the flexible cable assembly (15) and configured to sense a temperature profile of tissue surrounding the distal radiating end of the tubular member.
