Both with the T2 *-weighted images of the subject and the T2-weighted image of the subject and to get the T2 *-weighted images of a series of the subject stage to get the T2-weighted image of a series of subjects Quantitative assessment of cells were labeled including, a magnetic agent of the subject within generating a value based on, shows a quantitative assessment of cells are labeled with magnetic agent of the subject within. Furthermore, a concentration that is labeled with concentration and (i) R2, were labeled with the magnetic agent in cells, and (ii) R2 *, in the magnetic agent in cells, the step of generating the (iii) and further based on a predetermined relationship between a concentration that is labeled with R2, and concentration was labeled with the magnetic agent extracellular, and (iv) R2 *, in the magnetic agent extracellularly (26) may have. Has the magnetic agent intracellular unmixed substantially at various concentrations, and have the magnetic agent extracellular unmixed substantially different concentrations of the predetermined relationship is, more than one, It may be created based on the R2 * and R2 measurement phantom for calibration.対象者の一連のT2強調画像を取得する段階;前記対象者の一連のT2*強調画像を取得する段階;及び前記対象者の前記T2強調画像と前記対象者の前記T2*強調画像との両方に基づいて、前記対象者内の磁性剤で標識付けられた細胞の定量的評価を示す値を生成する段階;を含む、対象者内の磁性剤で標識付けられた細胞の定量的評価。生成する段階は更に、(i)R2と、細胞内の前記磁性剤で標識付けられた濃度と、(ii)R2*と、細胞内の前記磁性剤で標識付けられた濃度と、(iii)R2と、細胞外の前記磁性剤で標識付けられた濃度と、(iv)R2*と、細胞外の前記磁性剤で標識付けられた濃度と、の間の所定の関係(26)に更に基づいていても良い。前記所定の関係は、種々の濃度の実質的に混じり気のない細胞内の前記磁性剤を有し、種々の濃度の実質的に混じり気のない細胞外の前記磁性剤を有しする、複数の、較正のためのファントムのR2及びR2*測定に基づいて作り出されても良い。
