The present invention provides a method of operating a medical device 100, 400, 500, 600 with a magnetic resonance imaging system 102. The method comprises the step of collecting balanced magnetization magnetic resonance imaging data 148 by controlling said magnetic resonance imaging system according to a T1 measurement magnetic resonance imaging protocol and calculating a balanced magnetization reference image 156. The method further comprises step 206 of iteratively collecting dynamic PRFS magnetic resonance data according to proton resonance frequency shift magnetic resonance imaging protocol. The method further comprises the step 208 of repeatedly acquiring the magnetic resonance data portion 152 according to a T1 measurement magnetic resonance imaging protocol with a saturation preparation 804 at the beginning of the acquisition. The collection of dynamic PRFS magnetic resonance data and magnetic resonance data portions is interleaved. The method further comprises the step of repeatedly reassembling the magnetic resonance data portion into dynamic T1 magnetic resonance data. The method further comprises step 214 of iteratively computing the T1 map 158 using the reassembled dynamic T1 magnetic resonance data and balanced magnetized image. The method further comprises the step 216 of iteratively computing the PRFS phase calibration 160 using the dynamic PRFS magnetic resonance data and the T1 map. The method further comprises step 218 of iteratively computing the PRFS temperature map 162 using the dynamic PRFS magnetic resonance data and the PRFS phase calibration when the PRFS phase calibration is calculated.本発明は、磁気共鳴撮像システム102を備えた医療機器100,400,500,600を動作させる方法を提供する。該方法は、T1測定磁気共鳴撮像プロトコルに従って上記磁気共鳴撮像システムを制御することにより平衡磁化磁気共鳴撮像データ148を収集するステップ202及び平衡磁化基準画像156を計算するステップを有する。該方法は、更に、動的PRFS磁気共鳴データを陽子共鳴周波数シフト磁気共鳴撮像プロトコルに従って繰り返し収集するステップ206を有する。該方法は、更に、磁気共鳴データ部分152を、当該収集の開始時に飽和準備804を伴うT1測定磁気共鳴撮像プロトコルに従って繰り返し収集するステップ208を有する。前記動的PRFS磁気共鳴データ及び磁気共鳴データ部分の収集はインターリーブされる。該方法は、更に、前記磁気共鳴デー
