**8.8 Design of radiopharmaceuticals and gene transfer therapy**

Gene transfer therapy among cancer patients require monitoring emission for better management during treatment as presented in **Figure 2** [46–49]. The first clinical experience employing gene therapy was gained in 1989. leukocytes were transduced with heterologous DNA to look at the biological in vivo properties of tumor-infiltrating lymphocytes, and thereby optimizing antitumour imrnunotherapy strategies [50]. There are numerous approaches were undertaken to use powerful strategy of therapeutic gene transfer to the majority varieties of human diseases [51].
