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CT scanners, or computed tomography scanners, are advanced medical imaging devices that utilize X-ray technology to create detailed cross-sectional images of the body. They work by rotating an X-ray source around the patient, capturing multiple images from different angles, which are then processed by a computer to generate high-resolution 2D or 3D images. These images are crucial for diagnosing a variety of medical conditions, including tumors, internal injuries, and other abnormalities.
| Imaging modality | X-ray |
| Slice thickness | 0.5 mm to 10 mm |
| Detector type | Solid-state detectors |
| Scan time | 1 to 10 seconds per rotation |
| Field of view | Up to 50 cm |
| Spatial resolution | 0.5 mm to 1 mm |
| Radiation dose | Variable based on protocol |
When selecting a CT scanner, buyers should consider the specific imaging needs and the types of examinations that will be performed. It's important to specify the slice thickness, field of view, and the desired spatial resolution. Additionally, inquire about the scanner's capabilities for advanced imaging techniques, such as 3D reconstruction or dual-energy scanning. Certifications and compliance with safety standards are also critical factors to confirm.
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CT scanners typically have a lifespan of 7 to 10 years with proper maintenance.
Calibration should be performed regularly, typically every 6 to 12 months, depending on usage.
Yes, there are various types, including single-slice, multi-slice, and spiral CT scanners.
CT scans are designed with safety features to minimize radiation exposure, including dose modulation and shielding.
CT scanners can image most body parts, but specific scanners may be optimized for certain areas.
The cost of a CT scanner can range from $150,000 to over $2 million, depending on the technology and features.