An app and a camera attachment are now all that are needed to check for early...
An app and a camera attachment are now all that are needed to check for early onset lymphedema in breast cancer survivors.
Source: LymphaTech / Georgia Tech

App detects side effect of breast cancer treatment

Some 20 percent of breast cancer survivors will suffer from lymphedema, a potentially severe side effect of treatment that makes arms swell with lymph. The disease is often overlooked, but commercially available app-based technology now makes early detection easier, allowing for proactive treatment.

The lymphedema monitoring technology originated through research at the Georgia Institute of Technology and was further developed for market by the company LymphaTech, which also emerged from Georgia Tech. Now, a new study has benchmarked the technology, finding that it effectively detects early arm swelling associated with lymphedema in breast cancer patients. 

The detection technology is intended to improve not only patients’ physical health but also their peace of mind and finances. “The most immediate awful consequence of lymphedema is seen in mental health. Severe depression is very high,” said Brandon Dixon, who co-led the study and is an associate professor in Georgia Tech’s George W. Woodruff School of Mechanical Engineering. “If you detect it early, managing it could cost as little as $2,500 in a patient’s lifetime. If you catch it too late, the costs can rise as high as $200,000.”

“Lymphedema is under-researched, so we don’t know directly how it may lead to deadly health conditions, but there are more cases than AIDS, Parkinson’s disease, and Alzheimer’s disease combined, and it diminishes patients’ health,” Dixon said.

No cure

Lymphedema can strike breast cancer survivors if surgery includes the removal of a lymph node, slowing the flow of lymph. The liquid waste can congest the arm, at first subtly but later so drastically that patients may no longer fit into their clothing. “It makes the stigma of cancer stick out,” Dixon said. “And it is a very underappreciated disorder in medical treatment, so patients can feel stuck with it with no way out.”

Photo
After the user moves the smartphone or pad around, the new app makes a point cloud of the arm to determine its volume and indicate signs of early lymphedema.
Source: LymphaTech / Georgia Tech

A German device called a perometer accurately detects arm swelling caused by lymphedema, but perometers are seldom available in the U.S. The research team could find only one in metropolitan Atlanta to benchmark the LymphaTech system against. It was located at TurningPoint Breast Cancer Rehabilitation, a non-profit center that co-led the new study in collaboration with Dixon.

The advantages of the new technology over perometers are cost and convenience. Perimeters are bulky, costly machines, while the LymphaTech system runs on iPhone or iPad and requires only a $400 camera attachment and a paid smartphone app. Both devices simply determine total volume of the arm for swelling diagnosis.

The new system performed comparably in its accuracy to the perometer in the study.

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