The service provided by the GC(Gamma Cameras)in the Nuclear Medicine departments fails because of their breakdown,generally due to the associated electronics and not to the physical detection components.For this reaso...The service provided by the GC(Gamma Cameras)in the Nuclear Medicine departments fails because of their breakdown,generally due to the associated electronics and not to the physical detection components.For this reason,it was decided to develop an electronic system that allows the recovery and optimization of disused GC,starting with the design of the preamplifier for a PMT(photomultiplier tube).The circuit was designed and simulated and the list of components necessary for the construction of the preamplifier was generated,as well as the printed circuit board was designed for its assembly.By simulating the preamplifier this worked in linear mode.This determines that the amplitude of the output signal is proportional to the amount of charge delivered by the detector.This card allows an automatic adjustment of the signals of the PMT as do the modern GC.展开更多
A 15-year-old patient with osteosarcoma of left distal femur underwent a bone scan with Tc-99m hydroxymethylenediphosphonate (HDP). Whole body bone scan revealed extensive bone and thoracic metastases. Single Photon E...A 15-year-old patient with osteosarcoma of left distal femur underwent a bone scan with Tc-99m hydroxymethylenediphosphonate (HDP). Whole body bone scan revealed extensive bone and thoracic metastases. Single Photon Emission Computed Tomography-Computed Tomography (SPECT-CT) of the thorax localized the uptake at pleura and lung nodules. In this case study we want to share our experience using SPECT-CT.展开更多
文摘The service provided by the GC(Gamma Cameras)in the Nuclear Medicine departments fails because of their breakdown,generally due to the associated electronics and not to the physical detection components.For this reason,it was decided to develop an electronic system that allows the recovery and optimization of disused GC,starting with the design of the preamplifier for a PMT(photomultiplier tube).The circuit was designed and simulated and the list of components necessary for the construction of the preamplifier was generated,as well as the printed circuit board was designed for its assembly.By simulating the preamplifier this worked in linear mode.This determines that the amplitude of the output signal is proportional to the amount of charge delivered by the detector.This card allows an automatic adjustment of the signals of the PMT as do the modern GC.
文摘A 15-year-old patient with osteosarcoma of left distal femur underwent a bone scan with Tc-99m hydroxymethylenediphosphonate (HDP). Whole body bone scan revealed extensive bone and thoracic metastases. Single Photon Emission Computed Tomography-Computed Tomography (SPECT-CT) of the thorax localized the uptake at pleura and lung nodules. In this case study we want to share our experience using SPECT-CT.
