Present invention relates to a magnetic resonance imaging-guided drug vehicle and system, which possess ultrasound-triggered release function. In the delivery system of the invention, the drug vehicle carrying certain drug (or drugs) is detectable by magnetic resonance imaging, and the release of drug is triggered by ultrasonication when the drug vehicle arrives at target site and accumulates to a desirable concentration. The MRI-guided drug delivery system provides improved accuracy of drug releasing, including position and timing.本發明係關於具有超音波觸發釋藥功能之磁振影像引導藥物載體與系統,其可透過磁振造影追蹤藥物載體的位置,待藥物載體到達特定標靶位置並累積至足夠濃度時,再藉由醫用超音波於體外觸發藥物釋出,如此可使釋藥位置與時機的準確度大幅提高,並藉此降低藥物之副作用,同時可透過超音波的特性來加強化療藥物之效力。
