Positron Emission Tomography (PET) Scanners provide accurate assessment of the health of the patient

 

Positron Emission Tomography (PET) Scanners
Positron Emission Tomography (PET) Scanners

Positron Emission Tomography (PET) scanners use radioactive materials to visualize biological activities. These scans can determine the regional chemical composition of the human body and assess regional blood flow. They can also determine a person's absorption. This makes them an excellent choice for screening. Currently, hospitals use positron emission tomography to assess the status of cancer patients. These procedures use radiopharmaceuticals and account for approximately 35 million procedures per year.

Hospitals, diagnostic centers, PET centers, and research institutes are end-user of Positron Emission Tomography (PET) scans. In a clinical setting, the BGO-based scanners offer negligible background, better NECR performance, and lower radiation dose. These features make BGO-based scanners an excellent choice for low-activity environments. Biograph and Discovery-ST scanners produce similar amounts of NECR, but the biograph exhibits higher intrinsic background. The biograph scanner has a higher intrinsic background, while the Discovery-ST scanner exhibits a higher CNR. However, the Biograph scanner is able to produce images of greater quality.

Current clinical Positron Emission Tomography (PET) scanners are optimized for injected activities in the range of 50-750 MBq. However, emerging applications may require lower injected activities. Additionally, the radiolabeling of cells and drug carriers is limited by radiotoxicity and the number of particles and cells in the sample. Sources of noise may also limit signal detection.

The Biograph scanner, on the other hand, features a low energy threshold and a dominated background signal. The low-energy threshold, however, limits the number of coincidence events from the source. The low-energy threshold, however, does not significantly reduce the effect of 176 Lu on the background signal. This means that biograph scanners are the best choice for clinical applications. These scans provide an accurate assessment of the health of the patient. The cost of a PET scanner has become increasingly competitive. For example, the cost of a cyclotron serving a single scanner is not economically viable.

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