The field of medical imaging technology is undergoing a revolution. With the rapid advancement of DSPs, FPGAs, analog front ends (AFEs), and a host of other analog and mixed-signal semiconductor ICs, medical imaging technology is entering an unprecedented field. In addition, the development of image processing software and algorithms for implementing complex 3D and 4D image formats has also helped.
Scanning techniques such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), X-ray, positron emission tomography (PET), and radiation are changing the way medicine is implemented. In a recent survey by Dartmouth and Stanford University, top physicians listed MRI and CT scanning as the most valuable modern medical innovations.
The imaging system is millions of dollars, and it's huge and space-consuming. This system is evolving into a lower-cost product that can be loaded into a cart so that it can be used in doctor's offices, patient beds, or local clinics. Laptop-based portable handheld imaging systems are also starting to be available. This imaging system can also be tailored to fit the patient's body shape, weight, age and other unique characteristics.
For example, a recliner MRI can now be used to scan hands and feet, thanks to the development of the University of California at Davis. This device eliminates the anxiety of most patients who are afraid of entering a typical "tunnel" MRI scanner (which triggers claustrophobia). In addition, this system provides the highest image quality while relaxing the patient.
The explosion of the global elderly population and the demand for cost-effective equipment continue to drive the development of smaller, more accurate and faster imaging diagnostic devices. As semiconductor IC technology continues to move toward smaller size, faster speeds, and lower prices, semiconductor IC technology is meeting this need.
According to Veronica Marques, communications manager at Texas Instruments' medical business unit, semiconductor IC technology has taken the lead in improving the performance of medical imaging systems. She cites three distinct trends: the imaging resolution required is increasing (to allow for more accurate diagnosis), and the data throughput required is increasing (to make diagnosis more quickly and minimize patient discomfort). ), using innovative technology to produce smaller scanners (to reduce power consumption and increase cost efficiency).
The combination of improved scanner performance and system innovation makes the scanning process not only faster, but also safer for patients. CT and MRI have reduced the radiation dose by 75%.
The integration of multi-channel low noise amplifiers, voltage-to-current amplifiers, and multi-channel analog-to-digital converters (ADCs) into a single AFE IC has been a considerable advancement. TI's AFE58xx AFE for ultrasound scanners is 40% smaller than previous generations and consumes 50% less power, but they still deliver twice the performance.
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