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Radiation can be used in both diagnosis and therapeutic manners. The radiation emitted from radioisotopes can destroy tissue and in the therapeutic use: the destruction of cancerous and other dangerous tissues. And with diagnosis the gamma particle pass through the body tissues with minimal damage to a gamma camera.

To evaluate the effectiveness of PET, SPECT, MRI and X-rays, we first need some basic knowledge on how each of them work.

PET stands for positron emission tomography and works by an instrument collecting radiation emitted from a radioisotope injected the patient' body. The strengths of emission are recorded by a gamma camera, which has a series of scintillation crystals, each connected to a photomultiplier tube. The crystals convert the gamma rays, emitted from the patient, to photons of light, and the photomultiplier tubes convert and amplify the photons to electrical signals. These electrical signals are then processed by a computer to generate images. The table...

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Title: Radio-Imaging Effectiveness
Approximate word count: 1223
Approximate pages: 5 (250 words per double-spaced page)

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1. Radio-Imaging Effectiveness
   

   radio-imaging effectiveness. Radiation can be used in both diagnosis and
   therapeutic manners. The radiation emitted from radioisotopes ...