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A PET-CT scanner is a medical imaging device that combines Positron Emission Tomography (PET) and Computed Tomography (CT) technologies to provide detailed images of the body's internal structures and metabolic activity. The system typically consists of a CT scanner that generates high-resolution anatomical images and a PET scanner that detects gamma rays emitted from radioactive tracers injected into the patient, allowing for functional imaging. This dual-modality imaging technique is commonly used in oncology, cardiology, and neurology for diagnosis, treatment planning, and monitoring of diseases.
| Imaging modalities | PET and CT |
| Detector type | Solid-state detectors |
| Spatial resolution | 1 to 5 mm |
| Slice thickness | 1 to 10 mm |
| Field of view | Up to 70 cm |
| Radiation dose | Variable, based on protocol |
When selecting a PET-CT scanner, consider the imaging capabilities required for your specific applications, such as spatial resolution and slice thickness. It is also important to evaluate the system's radiation dose and the types of detectors used. Buyers should specify any necessary certifications, such as FDA approval, and inquire about service agreements and support options. Additionally, consider the volume of scans expected to determine the appropriate quantity and configuration of the system.
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PET imaging shows metabolic activity, while CT provides detailed anatomical structures.
A typical scan can take 30 to 60 minutes, including preparation time.
Patients may need to fast for several hours before the scan and avoid certain medications.
Yes, they are generally safe, but involve exposure to a small amount of radiation.
It is commonly used to diagnose cancer, heart disease, and neurological disorders.
Yes, they can detect changes in metabolic activity that may indicate early-stage diseases.