... 1/min. In the case of 68Ga-BZH3 and 68Ga-RGD4, K1 is associated with receptor binding, k2 with displacement from the receptor, k3 with cellular internalisation, and k4 with externalisation. ... In: Greitz T, Ingvar DH, Widén L, eds. The Metabolism of the Human Brain Studies with Positron Emission Tomography. New York, NY: Raven Press; 1983:123–148. 29. Strauss LG, Pan L, Koczan D, ... 68Ga-BZH3 uptake in a subgroup of patients with gastrointestinal stromal tumors [15], and quantitative 68Ga-BZH3 studies were helpful in patients with recurrent gliomas for tumor grading and...