Revolutionary millimeter-wave sensor (MWS) developed to non-invasively monitor respiratory movement throughout diagnostic X-ray and CT scans. The sensor tracks respiratory cycles and confirms breath-holding, making certain enhanced picture high quality throughout each imaging and radiation remedy. By providing a contact-free answer, the MWS offers correct movement detection with out the necessity for reflective markers, bettering affected person consolation and diagnostic precision. Credit score: Dr. Hiroyuki Kosaka from Kindai College, Japan
Monitoring respiratory movement throughout diagnostic imaging and radiation remedy is essential for correct analysis and therapy. Nevertheless, respiratory movement is never monitored throughout these procedures as a result of lack of sensible, non-invasive instruments, resulting in potential picture high quality points.
Administration of respiratory movement in radiation remedy ensures correct dose supply whereas minimizing publicity to organs in danger. Whereas, in diagnostic imaging, respiratory movement is required for the affirmation of the affected person’s breath-holding and sorting of the computed tomography (CT) projections to acquire four-dimensional CT pictures.
To handle this hole, researchers from Japan, led by Dr. Hiroyuki Kosaka, together with Dr. Kenji Matsumoto and Dr. Hajime Monzen from the Division of Medical Physics, Graduate College of Medical Sciences, Kindai College, have developed a millimeter-wave sensor (MWS) able to non-invasively visualizing respiratory motion throughout diagnostic X-ray and CT examinations. The MWS sensor is a non-contact gadget that makes use of electromagnetic radiation to detect movement in varied eventualities.
In contrast to conventional techniques, resembling infrared sensors that require the usage of reflective markers on the affected person’s physique, the MWS works with none bodily contact, preserving the affected person’s privateness and luxury. Their findings are printed on-line in Medical Physics on January 27, 2025.
To validate the effectiveness of the MWS, the researchers utilized a 24 GHz microMWS, detecting the respiratory movement. “We tested the system using a controlled respiratory motion phantom (QUASAR). This phantom allowed us to simulate respiratory motion under controlled conditions, comparing the MWS’s ability to detect subtle changes in motion with the phantom’s known motion patterns,” says Dr. Kosaka. The MWS efficiently detected the movement patterns, making certain it might reliably seize respiratory cycles even in managed take a look at eventualities.
Moreover, the analysis group validated the system by way of in depth testing, together with trials with 20 wholesome volunteers starting from 6 months to 64 years of age. Key benefits of the brand new system embrace:
Non-contact monitoring that maintains affected person privateness and luxury
Correct detection by way of clothes
Secure measurements in each supine and standing positions
Price-effective implementation in comparison with current applied sciences
Straightforward integration with present X-ray and CT gear
“This technology has the potential to standardize respiratory monitoring across diagnostic imaging,” explains Professor Monzen. “By providing objective, real-time feedback, we can significantly reduce the need for repeat imaging and improve diagnostic accuracy.”
Moreover, to check how properly the MWS might detect motion, the group used a radio-wave dark-box system, which helped decide the sensor’s directionality. This take a look at measured how precisely the MWS might detect movement from totally different angles. The researchers additionally optimized the sensor to choose up particular frequencies of motion utilizing a method referred to as the quick Fourier rework, which helps establish and separate the related respiratory alerts.
To make sure the accuracy of the MWS, the group in contrast the detected respiratory patterns with these of QUASAR. This phantom allowed the researchers to simulate respiratory with totally different ranges of movement. By evaluating the waveforms from the MWS and the phantom, findings confirmed the MWS’s means to reliably observe respiratory movement.
Trying forward, the MWS system might grow to be a regular device in hospitals and clinics worldwide, bettering the accuracy and effectivity of diagnostic imaging and therapy. With its low value, ease of use, and accuracy, the MWS system is positioned to considerably improve the standard of well being care by lowering the necessity for repeat imaging on account of poor picture high quality or breath-holding failure.
Moreover, this know-how may benefit a variety of affected person populations, together with the aged, kids, and people with circumstances that stop them from following breath-holding directions.
Total, the event of the MWS system marks a big leap ahead within the administration of respiratory movement in each diagnostic imaging and radiation remedy.
“By offering a precise, non-invasive, and cost-effective way to monitor respiratory movements, the MWS can enhance diagnostic accuracy, improve treatment outcomes, and contribute to more efficient health care. This breakthrough represents a major advancement in medical technology, with the potential to revolutionize how health care providers approach respiratory motion monitoring, improving both patient experiences and outcomes,” concludes Dr. Kosaka.
Extra info:
Hiroyuki Kosaka et al, Exploring the feasibility of millimeter‐wave sensors for non‐invasive respiratory movement visualization in diagnostic imaging and remedy, Medical Physics (2025). DOI: 10.1002/mp.17616
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Japanese researchers develop millimeter-wave sensor know-how for precision medical imaging (2025, February 7)
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