Heat imaging may aid sleep apnea diagnosis

HOUSTON, Oct. 24 (UPI) -- U.S. scientists have developed an infrared imaging technology to diagnose remotely sleep apnea in a laboratory setting.

Sleep apnea is commonly diagnosed using sensors to measure airflow through nasal pressure, temperature and carbon dioxide levels. However, the method can be uncomfortable and has the potential to disturb sleep.

The new technique developed at the University of Texas Health Science Center uses remote infrared imaging to detect abnormalities during sleep -- all without coming into contact with the patient.

"Polysomnography is a diagnostic test which establishes the presence or absence of sleep disorders," said lead researcher Dr. Jayasimha Murthy. "But standard methods have the potential to significantly disturb a patient's sleep pattern, so what we see in the lab may not be a true representation of the patient's sleep habits.

"However, remote infrared imaging is a non-contact method, so there is minimal interference with the patient. In fact, this system can be designed to where the patient isn’t even aware that monitoring is taking place."

Study results indicated the new technology was in nearly perfect agreement with conventional methods.

The findings were presented this week in Chicago during the 73rd annual international scientific assembly of the American College of Chest Physicians.