What Does a Pet Scan Machine Look Like?
In this article, we will be answering the most common questions about PET scans. As we journey through this exploration, we’ll not only provide answers but also unravel the intricate mechanisms that drive PET scan technology. So, prepare to expand your understanding of medical diagnostics as we discuss topics such as the functioning of PET scans and their crucial role in healthcare.
How Do PET Scanners Work?
Before conducting a PET scan, the medical staff administers a small dose of a positron-emitting radionuclide, or a PET tracer, to the patient. It takes 30 minutes to an hour to metabolize into the body depending on the area to be studied. The detector modules in the PET scanner produce an image by sensing pairs of gamma rays.
The higher concentration of radionuclide tracer in areas of the body with elevated metabolic levels leads to the production of gamma rays. PET applications computers enable the reconstruction of data into various image formats, such as 3-D rendering and axial slices. Medical professionals often pair and integrate a PET scan with a CT scan or an MRI scan to achieve the most accurate and detailed images possible, although a standalone PET scanner can also perform the scan.
Are PET Scan Results Immediate?
The imaging computers in the operator console digitally reconstruct PET images within seconds of concluding the PET exam. Your technologist can view the images upon completing your exam, but only a radiologist can interpret them to diagnose any condition. Images are immediately sent to PACS and are available for the Radiologist to view. Results are typically forwarded to General Practitioner and available to the patient within 24 – 48 hours.
How Do I Prepare For A PET Scan?
Patients need to adhere to a low-carbohydrate diet for 24 hours before undergoing a PET scan. During the 6 hours leading up to the exam, patients must refrain from consuming anything except water. It is advisable to wear comfortable clothing that avoids any metal near the examination area. Hospital gowns are often provided to accommodate any clothing that might interfere with image quality. Patients are typically asked to check in 1.5 hours prior to exam to fill out all necessary paperwork before starting procedure.
PET tracer (contrast medium) is administered one hour prior to start of exam. The procedure will typically begin with a scout scan from a CT scan or MRI scan and proceed to the PET scan. During the procedure, the medical staff will instruct the patient to remain still to ensure optimal image quality. The MRI, CT, and PET systems used for the examination do not induce any discomfort in the patient and yield remarkable high-resolution images that aid in diagnosing various patient conditions.
Conclusion
Additional Resources
To learn more about this modality, check out our patient resources and video library. We are always adding content, so check back often.
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