Source: Nature Natural Science Research
The improved new scanner reduces the radiation dose and thus greatly expands its range of applications.
A state-of-the-art medical imaging device can perform a full-body 3D scan in just 20 seconds . And will soon be widely used in research and clinical applications and medical imaging equipment.It is black technology!
An improved medical device takes only a few tens of seconds to complete a full-body scan. The picture shows the scanned image generated by the device. Source: University of California, Davis, Zhongshan Hospital, Fudan University, and Lian Ying Medical
PET requires 20 mins
Traditional positron emission tomography (PET) typically requires 20 minutes of imaging time. And this improved PET scanner is faster and has a lower radiation dose than conventional scanners. At the “High Risk and High Return Research Seminar”. Recently held by the National Institutes of Health.Researchers showed the latest video generated by this device.
Sanjay Jain, a pediatrician and infectious disease doctor at Johns Hopkins University in the United States. Said that the new device is particularly suitable for imaging children. Because children often tamper with the scanner and affect measurement data. In addition, the device can us. To study the delivery process of drugs in the body.
Standard PET scanners generally require a doctor to inject a radiotracer into the body of the person examin. And then use a scanner to detect gamma rays. Cells in the human body take up and break down these radioactive molecules, releasing two gamma rays. The circular detector around the human body reconstructs .The source of the radiation by measuring the angle and velocity of the radiation release. Constructing a 3D map of the cells of the metabolic molecule.
The scanner ring
The scanner’s ring is only 25 cm thick.So the doctor can only image a small portion of the body at a time. The decay of the tracer molecules is fast, which means that the signal disappears quickly. Therefore, if you want to enlarge the imaging area.You need to inject more radioactive molecules into the scanned object and move the scanning part back and forth in the ring.
Ramsey Badawi, a biomedical engineer at the University of California. Davis, and colleagues achieved a one-time whole-body imaging by connecting eight PET scanner rings to a 2-meter-long tube. The new scanner can generate images with only 1/40 of the time of conventional scanners and 1/40 of the radiation dose. Which really reduces the risk of radiation. The researchers also allowed the scanned object to stay in the scanner for a longer period of time. Taking pictures of motion capture to see how the radiotracer diffused in the body.
In December last year. The US Food and Drug Administration approved the use of this improved scanner in the United States. Badawi plans to make its first practical application in California next month.
Abass Alavi, a radiologist at the University of Pennsylvania, said: “The whole body 3D imaging PET scanner is another leap in medical imaging.” He is currently working with Badawi to study atherosclerosis using a modified PET scanner.
Alavi said that doctors may be able to determine . Whether a particular drug will help treat this arterial occlusive disease through this 2-meter device. Badawi says traditional PET scanners are generally not use for cost and radiation problems.
Jain hopes that this improved 3D imaging PET scanner device can use to test a radioactive sugar tracer .That he developed that would only take up by bacterial cells without being taken up by mammalian cells. By injecting this tracer into a patient with a suspected bacterial infection. The most concentrated location of the bacteria can be found. In addition, Jain’s lab is developing indicators that can distinguish between different types of bacteria. As a researcher in the drug delivery process. He said that this improve PET scanner “is a dream come true for people like me.”