The phrase "administrations of activity" is not correct and does not convey a clear meaning in written English.
It may be intended to refer to the management or organization of activities, but the wording is awkward and unclear.
Example: "The administrations of activity in the project were poorly coordinated, leading to confusion among team members."
Alternatives: "management of activities" or "organization of tasks".
Diagnostic procedures imply the administration of activity levels that do not lead to the appearance of radiation deterministic effects; therefore only stochastic risks have to be considered.
Autologous marrow transplantation or peripheral blood stem cell reinfusion has been investigated as a means to overcome bone marrow toxicity in RIT, thereby allowing administration of activity doses more than twice as high as without any bone marrow support.
Performing a study within the workers' own department, aiming at the optimization of a procedure used in the preparation and administration of activity for imaging or therapy, is an excellent way to achieve radiation awareness, to educate and train workers, and to show compliance with dose limits.
Everaert et al. showed that administration of activities of FDG of ≥8 MBq/kg results in PET images of good to excellent quality in the vast majority of patients using a standardised protocol [4].
The introductory session additionally includes administration of physical activity and dietary questionnaires that facilitate tailoring the intervention.
Reduction of the renal radiation dose by reducing the renal retention of radiolabelled peptides facilitates the administration of higher activity doses in PRRT, which is expected to increase its therapeutic effect.
Whether or not VEGF121b activates VEGFR-2 in a similar way is yet to be investigated, as are the potential effects of simultaneous VEGF121b and VEGF165b administration of receptor activity, angiogenesis or tumour growth.
This inconveniences the patient and requires administration of greater activity such that sufficient signal is present at the later imaging time point (thereby increasing radioactive exposure to patient and staff).
Conclusion: While the pump infusion techniques produce uniform and homogeneous perfusates, gravity technique was found to deliver a variable content perfusate making difficult the control of cumulative perfused activity, and perilous the planning administration of partial activities following dose adjustments.
The half-life of 213Bi results in a low bone marrow dose in humans, allowing administration of high activities.
