We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us

Download Mobile App




Events

ATTENTION: Due to the COVID-19 PANDEMIC, many events are being rescheduled for a later date, converted into virtual venues, or altogether cancelled. Please check with the event organizer or website prior to planning for any forthcoming event.

Mobile Thermal Imaging Software Monitors Breathing

By MedImaging International staff writers
Posted on 28 Sep 2017
Print article
Image: Research suggests low-cost thermal cameras attached to mobile phones can track breathing patterns (Photo courtesy of Youngjun Cho / UCL).
Image: Research suggests low-cost thermal cameras attached to mobile phones can track breathing patterns (Photo courtesy of Youngjun Cho / UCL).
Novel algorithms could allow portable, low-cost thermal cameras connected to mobile devices to detect breathing problems and monitor stress.

Researchers at University College London (UCL; United Kingdom) have developed a novel approach for respiration tracking which observes the human nostril, using local temperature variations to infer inhalation and exhalation cycles. Three methods are involved; an adaptive technique that quantifies and constructs a color mapping of absolute temperature that improves segmentation, classification and tracking; a thermal gradient flow method that computes thermal gradient magnitude maps to enhance the accuracy of the nostril region tracking; and a thermal voxel method that increases the reliability of the captured respiration signals, compared to the traditional averaging method.

The researchers demonstrated the robustness of the system to track the nostril-region and measure the respiratory rate by evaluating it during controlled respiration exercises in high thermal dynamic scenes, and also showed how the algorithm outperformed standard photoplethysmography (PPG) algorithms in settings with different amounts of environmental thermal changes and human motion. The new system also compensates for the negative effects of variations in the ambient temperature and motion artifacts. The study was published on September 13, 2017, In Biomedical Optics Express.

“As thermal cameras continue to get smaller and less expensive, we expect that phones, computers and augmented reality devices will one day incorporate thermal cameras that can be used for various applications,” said senior author Nadia Bianchi-Berthouze, PhD. “By using low-cost thermal cameras, our work is a first step toward bringing thermal imaging into people's everyday lives. This approach can be used in places other sensors might not work or would cause concern.”

“Thermal cameras can detect breathing at night and during the day without requiring the person to wear any type of sensor. Compared to a traditional video camera, a thermal camera is more private because it is more difficult to identify the person,” said lead author PhD candidate Youngjun Cho. “We wanted to use the new portable systems to do the same thing by creating a smartphone based respiratory tracking method that could be used in almost any environment or activity.”

Respiration rate is a critical vital sign that provides early identification of respiratory compromise and patient distress, and is especially important for post-surgical patients receiving patient-controlled analgesia (PCA) for pain management, as the sedation can induce respiratory depression and place patients at considerable risk of serious injury or even death.

Related Links:
University College London


Print article
Sun Nuclear -    Mirion
CIRS -  MIRION

Channels

Radiography

view channel
Image: The FDA has cleared the CSA system with Dynamic Digital Radiography (Photo courtesy of 20/20 Imaging)

Advanced Digital X-Ray System Allows Clinicians to Capture and Visualize Anatomy in Motion

Dynamic Digital Radiography (DDR) is a revolutionary X-ray technology that enables the visualization of anatomy in motion, so clinicians can interpret the dynamic interaction of anatomical structures,... Read more

MRI

view channel
Image: MRI identifies patients with sarcoidosis at risk for bad cardiac outcomes (Photo courtesy of University of Minnesota Medical School)

MRI Identifies Patients at Higher Risk for Cardiac Sarcoidosis-Related Adverse Outcomes

Cardiac sarcoidosis is a rare inflammatory heart disease that can result in rhythm disturbances and heart failure. Researchers have now found that patients with certain features on magnetic resonance imaging... Read more

Ultrasound

view channel
Image: EG-740UT ultrasound endoscope combined with ARIETTA 850 provides outstanding ultrasound image quality (Photo courtesy of FUJIFILM)

Next-Gen Ultrasound Endoscope Enables Complex Diagnostic and Therapeutic Procedures

Endoscopic ultrasound is a specialist procedure performed utilizing an endoscope equipped with an ultrasonic transducer which emits and receives ultrasonic waves within the gastrointestinal tract, such... Read more

Imaging IT

view channel
Illustration

Global AI in Medical Diagnostics Market to Be Driven by Demand for Image Recognition in Radiology

The global artificial intelligence (AI) in medical diagnostics market is expanding with early disease detection being one of its key applications and image recognition becoming a compelling consumer proposition... Read more
Copyright © 2000-2022 Globetech Media. All rights reserved.