Syringe shape and positioning relative to efficiency volume inside dose calibrators and its role in nuclear medicine quality assurance programs.
A careful analysis of geometry and source positioning influence in the activity measurement outcome of a nuclear medicine dose calibrator is presented for (99m)Tc. The implementation of a quasi-point source apparent activity curve measurement is proposed for an accurate correction of the activity inside several syringes, and compared with a theoretical geometric efficiency model. Additionally, new geometrical parameters are proposed to test and verify the correct positioning of the syringes as part of acceptance testing and quality control procedures.
Santos
J A M
JA
Serviço de Física Médica, Instituto Português de Oncologia do Porto Francisco Gentil, E.P.E., Rua Dr. António Bernardino de Almeida, 4200072 Porto, Portugal. a.miranda@portugalmail.pt
Carrasco
M F
MF
Lencart
J
J
Bastos
A L
AL
D009683:Nuclear Medicine / Q000295:instrumentation* / Q000592:standards; D011786:Quality Control; D011829:Radiation Dosage; D013594:Syringes / Q000592:standards*; D013667:Technetium
D013667:Technetium