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PET (Positron Emission Tomography) ısica de la Medicina Nuclear 2016 Licenciatura en F´ ısica M´ edica Facultad de Ciencias Exactas Universidad Nacional de La Plata

PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

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Page 1: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

PET (Positron Emission Tomography)

Fısica de la Medicina Nuclear 2016

Licenciatura en Fısica Medica

Facultad de Ciencias ExactasUniversidad Nacional de La Plata

Page 2: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Emision β+

AZX

β+−−→A

Z−1 X

p+ = n+ e+ + ν + E

Page 3: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Aniquilacion

Page 4: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days
Page 5: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Deteccion de aniquilacion por coincidencia (ACD)

Colimacion electronica!Se asume un evento de coincidencia cuando se colecta un par dentro de una “ventana

de coincidencia en el tiempo”.

Page 6: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Detectores

Page 7: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Detector de bloque estandar

Page 8: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Detectores modificados (Quadant sharing)

Menor costo, pero aumentan las perdidas por tiempo muerto!

Page 9: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Detectores modificados (phoswhich)

Permite analizar profundidad de interaccion (reduce grosor efectivo), a costo decomplicar la produccion y degradacion del desempeno general.

Page 10: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Geometrıas

Page 11: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days
Page 12: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days
Page 13: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

Tiempo de vuelo

Page 14: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days
Page 15: PET (Positron Emission Tomography) - UNLP 4...Radionucli de 11 C 62Cu 64Cu 76Br 82Rb Half-Life 20.4 min 9.96 min 123 sec 110 min 9.74 min 12.7 hr 68.3 min 16.1 hr 78 sec 4.18 days

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