Nuclear Structure and Decay Data for A=44 Isobars

Titanium-45 (45Ti) Radiochemistry and Applications in Molecular Imaging

“…On a radiotracer scale, applications of titanium have been investigated using two radiotitanium isotopes: titanium-44 ( 44 Ti) and titanium-45 ( 45 Ti). Titanium-44 is a radioisotope with a very long half-life of 60 years and potential applications as part of a 44 Ti/ 44 Sc generator system [14][15][16]. The decay of 44 Ti to 44 Sc (t 1/2 = 3.97 h, mean E β+ = 0.632 MeV (branching ratio (BR) 94.27%)), and the secular equilibrium due to the half-life difference makes this a potential source for a constant supply of 44 Sc at research sites [16][17][18].…”

“…Titanium-44 is a radioisotope with a very long half-life of 60 years and potential applications as part of a 44 Ti/ 44 Sc generator system [14][15][16]. The decay of 44 Ti to 44 Sc (t 1/2 = 3.97 h, mean E β+ = 0.632 MeV (branching ratio (BR) 94.27%)), and the secular equilibrium due to the half-life difference makes this a potential source for a constant supply of 44 Sc at research sites [16][17][18]. Titanium-45 is of interest for positron emission tomography (PET) applications due to the characteristic properties of this radionuclide including its half-life of 3.08 h, its decay by positron emission (BR 85%), its low mean positron energy (E β + 439 keV) and very small fractions of other gamma rays (720 keV (0.15%)) [19,20].…”