Feature | June 10, 2014

Real-Time Radiation Monitoring Reduces Patient, Cardiologist Exposure

RadiCure study evaluates device that beeps upon radiation exposure

June 10, 2014 — A real-time monitoring device that beeps in the presence of high doses of radiation can help reduce patient and interventional cardiologist exposure to radiation during cardiac catheterization, according to results of the RadiCure study presented as a late-breaking clinical trial at the Society for Cardiovascular Angiography and Interventions (SCAI) 2014 scientific sessions in Las Vegas.

Radiation exposure during cardiac catheterization can place both the patient and the physician at risk. Advances in imaging equipment have helped reduce patient exposure, but physician exposure is typically only measured months later. In the study presented at SCAI, researchers monitored physician and patient radiation exposure using a real-time, personal radiation monitoring device called the Bleeper Sv. The device sounds every 15 minutes in response to normal background radiation and increases its beep rate as radiation exposure increases.

For the study, 505 patients undergoing left cardiac catheterization procedures were randomized to use or not use the monitoring device. Procedure times and patient characteristics were comparable in both study groups. Following the procedure, patient and interventional cardiologist radiation exposure was measured.

Researchers found that compared to the control group, use of the monitoring device led to a significant decrease in operator exposure [0.9 (0.4-1.7) vs 1.4 (0.6-2.5) mrem, p<0.001 for the first operator and 0.5 (0.2-1.0) vs 0.7 (0.4-1.4) mrem, p<0.001 for the second operator]. Patient radiation exposure did not differ significantly between the two groups; however, there was a trend for lower Air Kerma and Dose Area Product radiation in the Bleeper Sv group [0.855 (0.58-1.507) vs 0.989 (0.610-1.802) Gray, p=0.153 and 76.68 (52.98-133.53) vs 84.61 (55.37-161.20) Gray*cm2, p=0.125, respectively].

“Use of a personal radiation monitoring device that provides auditory feedback helps reduce both the patient and the interventional cardiologist’s exposure,” said Georgios Christopoulos, M.D., research fellow at VA North Texas Health Care System and the University of Texas Southwestern Medical Center.

“The device allows for immediate reaction that can limit exposure, unlike current monitoring that physicians undergo months after exposure,” said Emmanouil Brilakis, M.D., Ph.D., FSCAI, director of the cardiac catheterization laboratories at VA North Texas Health Care System, associate professor of medicine at the University of Texas Southwestern Medical Center and the study’s principal investigator.

For more information: www.scai.org

Related Content

Philips Healthcare, Volcano IVUS showing an implanted stent. IVUS might offer an alternative to contrast angiography in patients with acute kidney disease (AKD).
News | Cath Lab | June 14, 2019
June 14, 2019 – A late-breaking study examined the effects of intravascular ultrasound (IVUS) guided drug-eluting ste
Videos | Cath Lab | May 20, 2019
This is a walk through of the primary structural heart hybrid cath lab at...
Mobility May Predict Elderly Heart Attack Survivors' Repeat Hospital Stays
News | Cath Lab | April 23, 2019
Determining which elderly heart attack patients take longer to stand from a seated position and walk across a room may...
FDA Releases New Guidance on Medical Devices Containing Nitinol
News | Cath Lab | April 18, 2019
April 18, 2019 — The U.S.
Angiography shows a stenotic lesion in the mid right coronary artery, undilatable by standard high-pressure balloon angioplasty (inset, arrowheads). (B) Optical coherence tomography (OCT) cross-sectional (top) and longitudinal (bottom) images acquired before IVL and coregistered to the OCT lens (arrow in A) demonstrate severe near-circumferential calcification in the area of the stenosis. (C) Angiography demonstrates improvement in the area of stenosis after IVL lithoplasty.

Figure 2: Angiography demonstrates a stenotic lesion in the mid right coronary artery, undilatable by standard high-pressure balloon angioplasty (inset, arrowheads). (B) Optical coherence tomography (OCT) cross-sectional (top) and longitudinal (bottom) images acquired before IVL and coregistered to the OCT lens (arrow in A) demonstrate severe near-circumferential calcification (double-headed arrow) in the area of the stenosis. (C) Angiography demonstrates improvement in the area of stenosis after IVL (inset; note the cavitation bubbles generated by IVL [black arrows]). (D) OCT cross-sectional (top) and longitudinal (bottom) images acquired post-IVL and coregistered to the OCT lens (white arrow in C) demonstrate multiple calcium fractures and large acute luminal gain. (E) Angiography demonstrates complete stent expansion with the semicompliant stent balloon (inset) without the need for high-pressure noncompliant balloon inflation. (F) OCT cross-sectional (top) and longitudinal (bottom) images acquired post-stenting and coregistered to the OCT lens (arrow in E) demonstrate further fracture displacement (arrow), with additional increase in the acute area gain (5.17 mm2), resulting in full stent expansion and minimal malapposition.

Feature | Cath Lab | April 15, 2019 | Dean Kereiakes, M.D., FACC, FSCAI, and Jonathan Hill, M.D., DISRUPT CAD III Co-Principal Investigators
Over the last 40 years, despite multiple advancements in percutaneous coronary interventions, calcified lesions remai
BIOTRONIK’s PK Papyrus covered coronary stent. The stent ius used in emergency coronary artery dissections to repair the vessel wall.
Technology | Cath Lab | April 15, 2019
April 15, 2019 — Biotronik began its U.S.
Providing Follow-Up Care After Heart Attack Helps Reduce Readmissions, Deaths
News | Cath Lab | April 09, 2019
A program designed to help heart attack patients with the transition from hospital to outpatient care can reduce...
TherOx Receives FDA Approval for SuperSaturated Oxygen Therapy
Technology | Cath Lab | April 08, 2019
TherOx Inc. announced that the U.S. Food and Drug Administration (FDA) granted premarket approval for its...
Cook Medical Recalls Transseptal Needle Due to Risk of Detached Plastic Fragments
News | Cath Lab | March 20, 2019
March 20, 2019 — Cook Medical is recalling one lot of its...
Overlay Init