News | February 05, 2015

Computer Program Helps Doctors Gauge Blood Flow During Aneurysm Treatment

Software compares images to track blood flow in real-time

ISET, aneurysms, blood flow, software, flow diverter, FFR catheters

February 5, 2015 — A new computer program allows doctors to assess blood flow as they are using flow-diverter devices to treat life-threatening aneurysms, suggests a preliminary study being presented at the 27th annual International Symposium on Endovascular Therapy (ISET).

 “Until now, there was no safe way to measure the blood flow in real-time, during the procedure, including flow reduction to the aneurysm and flow to the rest of the brain,” said Aichi Chien, Ph.D., assistant professor of interventional neuroradiology at the University of California, Los Angeles. “Because the program quantifies blood flow automatically, doctors do not need to stop the procedure to get this information, which helps them make the best decisions during the procedure.”

A flow diverter is a small stent made of a fine mesh that is implanted minimally invasively in an artery at the site of an aneurysm. A flow diverter redirects blood past the aneurysm to remove the pressure that could cause the aneurysm to rupture, and the patient to potentially bleed to death. Flow diverters typically are used to treat large (2-2½ centimeters) or giant (more than 2½ centimeters) aneurysms, or those with wide necks.

The Intracranial Stent Flow Mapping computer program — IS FlowMap — takes advantage of the standard digital subtraction angiography (DSA) imaging being taken during the procedure. The program analyzes the standard images, compares the difference in blood flow image to image and calculates the changes within seconds, providing that information to the doctor during treatment. If blood flow isn’t optimal, the doctor may choose to use a different treatment, such as placing coils in the aneurysm.

In the study, 13 patients were treated, and the average reduction in blood flow entering the aneurysm was 48 percent. The flow diverter healed the aneurysm in 11 (85 percent) of the patients.

While 3 to 5 million people in the United States have brain aneurysms, most don’t cause problems. About 30,000 people a year suffer from a ruptured aneurysm. Anyone can develop an aneurysm, but risk factors include high blood pressure, alcohol and drug abuse and smoking.

“There are many advances in devices to treat patients with aneurysms and other vascular disease, but the technology to see the effects of those devices is very limited,” said Chien. “The IS FlowMap provides a simple way to analyze the treatment without any additional procedures or risk. We’ll be able to use this information moving forward to compare treatment and determine what amount of blood flow change is optimal.”

For more information:

Related Content

iFR reference numbers posted for new users in the cath lab at Northwestern Medicine's Central DuPage Hospital in Winfield, Ill.
News | FFR Technologies | July 26, 2018
July 26, 2018 — The Society of Cardiac Angiography and Interventions (SCAI) released a focused update expert consensu
CathWorks Receives CPT Code for Non-invasive FFRangio Measurements During PCI
News | FFR Technologies | July 12, 2018
CathWorks announced the approval of a new Current Procedural Terminology (CPT) code 0523T for non-invasive, 3-D...
The ORBITA Trial showed FFR and iFR are good predictors of PCI outcomes. This was a 2018 PCR late-breaker.
News | FFR Technologies | May 29, 2018
May 29, 2018 — The first placebo-controlled trial that looked at how fractional flow reserve (FFR) and instantaneous
FAST Study Demonstrates High Diagnostic Accuracy of CAAS vFFR
Technology | FFR Technologies | May 22, 2018
Pie Medical Imaging announced that clinical data on its CAAS vFFR (Cardiovascular Angiographic Analysis Systems for...
HeartFlow FFRct Analysis Added to ITP Payment Program in the U.K.
News | FFR Technologies | April 25, 2018
HeartFlow Inc. announced that the National Health Service (NHS) England has chosen the HeartFlow FFRct (fractional flow...
Videos | FFR Technologies | March 15, 2018
An economic analysis of the DEFINE-FLAIR study comparing FFR vs. iFR, found a cost savings of nearly $900.
iFR More Cost-Effective Than FFR in PCI Guidance
News | FFR Technologies | March 12, 2018
Philips announced health economic results from the DEFINE FLAIR clinical trial comparing cost-effectiveness between...
BlueCross BlueShield Companies in Eight States Issue Positive Medical Policies for HeartFlow FFRct Analysis
News | FFR Technologies | December 28, 2017
HeartFlow Inc. announced that Health Care Service Corp. (HCSC), which operates Blue Cross and Blue Shield plans in five...
Videos | FFR Technologies | November 15, 2017
A discussion with William Fearon, M.D.
GE Healthcare and Medis Collaborate to Expand Availability of Quantitative Flow Ratio Software
News | FFR Technologies | November 10, 2017
GE Healthcare and Dutch-based cardiovascular imaging software provider Medis announced at the 2017 Transcatheter...
Overlay Init