This document discusses different types of cyclotron targets - solid, liquid, and gas - used in the production of medical isotopes. It provides details on the production of gallium-67, thallium-201, iodine-123, rubidium-81m, and nitrogen-13 through various nuclear reactions and the target designs employed, including electroplating solid targets, gas targets, and liquid targets. Engineering drawings are also included to illustrate gas target components and design.
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PET - Cyclotron Targets
1. CYCLOTRON TARGETS
Targets type
Solid
Liquid
GAS
Engr. Ahmed Al-Ghaith
Senior Cyclotron Engineer
Cyclotron & Radiopharmaceuticals Department
Research Center
2. PRODUCTION OF GALLIUM AND THALLIUM
Gallium-67 Production
Nuclear reaction: Zn-68(p,2n) Ga-67
Half Life: 78 Hours.
Proto Energy: 26 Mev
Target Design: Electroplating of Zinc onto
copper.
Internal or External beam.
10. PRODUCTION OF GALLIUM AND
THALLIUM
Thallium-201 Production
Nuclear Reaction: TL-203(p,3n)Pb-201 --- Tl-201
Half Life: 73 Hours
Proton Energy: 29 Mev
Target Design: Electroplating of Thallium onto a copper
plate.
Internal or External beam.
11. PRODUCTION OF IODINE-123
Production:
Solid and Gaseous target have been used
Nuclear Reactions:
Te-124(p,2n)I-123 solid material enriched Te
Half Life: 13.2 Hours
Target Design: depend on the physical state
of the target material
24. Production of Rubidium-81m
Production
Nuclear Reaction:Kr-82(p,2n)Rb-81Kr-81m
Rb-81 Half Life: 4.58 Hr
Kr-81m Half Life: 13 sec.
Target Design: Gas targets are always used.
Recovery of radionuclide: target is washed
clean of activity.