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The design and performance of a portable handheld (11)CO2 delivery system
Dohyun Kim1, David L Alexoff1, Mike Schueller1
1Biosciences Department, Brookhaven National Laboratory, Upton, NY 11973-5000, USA.
Abstract:
We constructed a hand-held device to efficiently trap [(11)C]CO2 from the cyclotron target, safely transport up to 3.7GBq (100mCi) doses to remote sites and release it without the need for a liquid cryogen. The system consists of a 180W furnace and a miniature molecular sieve trap (80-100mg; 80-100mesh 13×) placed inside a lead pig weighing 11.1kg. The overall [(11)C]CO2 delivery efficiency of the device is ~82% (> 99% trapping efficiency). Radiation dose rates measured at 30cm from the surface of the pig are <43.5µSv/h (5mR/h) up to 2.59GBq (70mCi).
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