Articles tagged with Angiography
Researchers at University Clinic in Leuven, Belgium successfully treated premature infants with constricted aortas using bailout stenting. The procedure resulted in better surgical outcomes and improved hemodynamic stability for patients.
Three Society of Interventional Radiology members, John D. Fulco, Irvin F. Hawkins Jr., and David C. Levin, were awarded the society's Gold Medal for advancing interventional radiology and improving patient care.
A new risk score tool developed by researchers at Intermountain Medical Center has been shown to more accurately predict patients' risk for cardiac disease and death. The Intermountain Risk Score, which includes age, sex, and routine blood test results, improved doctors' ability to measure patient risk by up to 57%.
A new study published in Radiology shows that an imaging exam using the latest generation of CT technology exposes patients to up to 91% less radiation than standard helical CT scanning. The new volume scanner can image the entire heart in one piece, eliminating artifacts and reducing radiation exposure.
A recent study found that individuals with ECGs prior to hospital arrival experienced significantly reduced door-to-balloon times. This advanced assessment allowed patients to bypass ER and receive reperfusion treatment in the cardiac catheterization laboratory, resulting in lower mortality rates.
Researchers at Medical College of Wisconsin used prospective electrocardiogram (ECG) gating to significantly reduce patient radiation dose during CT angiography. The study compared retrospective and prospective ECG gating techniques, finding that image quality was equivalent but radiation doses differed substantially.
The PRAGUE-7 study, a randomized trial, investigated the effect of routine upfront administration of abciximab on outcomes in acute myocardial infarction (AMI) patients complicated by cardiogenic shock. The study found no significant benefit from this approach, with similar results seen between groups receiving standard or selective ab...
A new trial aims to determine the best strategy for patients who cannot receive primary percutaneous coronary intervention (P-PCI) by investigating early fibrinolysis with mandated angiography. The study seeks to clarify whether this approach can achieve comparable outcomes to P-PCI.
The NORDISTEMI study found that patients in rural areas with long transfer delays experience improved treatment outcomes with thrombolysis followed by immediate angiography. The results suggest an early invasive strategy may be preferable to conservative management, reducing the risk of death, reinfarction, or stroke.
A study published in the American Journal of Roentgenology found that CT angiography can identify diseases and injuries beyond the pulmonary arteries in children. Researchers evaluated 89 CTA exams with suspected pulmonary embolism and found alternative diagnoses in 59% of cases, including pneumonia and atelectasis.
Researchers at Brigham and Women's Hospital and Harvard Medical School have discovered a way to lower patient radiation doses during pulmonary CT angiography. By adjusting the peak kilovoltage setting, they were able to achieve superior vascular enhancement while maintaining image quality.
Researchers found that implementing new techniques to reduce radiation exposure from cardiac computed tomography angiography did not compromise image quality. The study showed a 53.3% reduction in patient radiation doses, with increases in low-volume imaging centers and improved use of lower tube voltage.
A study published in the American Journal of Roentgenology found that MDCT angiography accurately recommends successful treatment for patients with critical limb ischemia, allowing them to avoid surgery. The procedure was also shown to be a low-risk option compared to traditional digital subtraction angiography.
A novel PFO closure system has been found to be safe and effective at 90 days, with 89% of patients achieving complete or clinical closure. The FlatStent EF system is designed to reduce the risk of blood clots and other complications associated with current PFO closure systems.
A new study by the Society for Cardiovascular Angiography and Interventions found that proton pump inhibitors, commonly used to treat heartburn, can compromise the anti-clotting action of clopidogrel. This can lead to a higher risk of hospitalization for heart attack, stroke, and other serious cardiovascular illnesses.
A new study reveals that peripheral arterial disease is frequently underdiagnosed in patients with known heart disease, even those under cardiologist care. The researchers found that approximately one out of six patients had previously unrecognized PAD, and that older patients and women were more likely to be overlooked.
A large and solitary congenital arterioportal fistula (APF) was diagnosed in a 73-year-old woman. Transcatheter closure using multiple coils was initially successful but resulted in two subsequent episodes of alimentary tract hemorrhage, suggesting that APFs with significant collateral circulation may be challenging to treat.
Physicians can reduce radiation exposure by using tube current modulation in 'triple rule-out' coronary CT angiography. This technique reduces effective radiation doses from 9.9-31.3 mSv to 5.4-16.6 mSv, comparable image quality and less than nuclear stress test radiation.
A study at the University of Erlangen found that reducing tube voltage from 120 kV to 100 kV lowered cardiac CT radiation doses in adult patients weighing 185 pounds or less by 39% without compromising image quality. The lower dose resulted in effective radiation doses ranging from 4.9 to 11.9 mSv, compared to 8.8 to 16.9 mSv at 120 kV.
A study published in Journal of Intensive Care Medicine found that patients who received coronary angiography after cardiac arrest were twice as likely to survive without significant brain damage. Coronary angiography, an imaging procedure that shows blood flow through the heart, was independently associated with good neurologic outcomes.
Researchers found that 89% of patients treated with catheter-based therapy (CBT) showed significant improvement in neurologic disability and NIHSS score. CBT may be an effective alternative for ischemic stroke patients ineligible for intravenous thrombolysis, with potential benefits including earlier treatment windows.
The FAME study found that stents placed using fractional flow reserve (FFR) had a 28% lower incidence of major adverse cardiac events compared to conventional angiography. This technique can distinguish between hemodynamically relevant and irrelevant stenoses, allowing for more targeted interventions.
A new study found that cardiac computed tomography (CT) angiography scans may expose patients to high doses of radiation. The study suggests that using available strategies to reduce radiation dose can substantially decrease patient exposure, and that educating physicians and technicians on these methods is essential
A new angled gantry approach to coronary CT angiography significantly reduced breast radiation exposure by half. Researchers found that imaging the heart with an angled gantry acquisition reduced the overlap with the lower breast from 6.5cm to 3.2cm, warranting further machine development.
Coronary CTA accurately evaluates patients with calcified coronary artery plaques, detecting stenosis with 72% accuracy rate. Non-invasive and cost-effective, CTA provides a comprehensive view of arteries from multiple angles.
A study published in Neurosurgery found that routine testing with cerebral angiography following endovascular treatment of brain aneurysms carries a very low risk of complication. The test was shown to have a complication rate of 0.43 percent, with only one major and permanent complication occurring.
A recent study found that women and South Asians with typical pain were more likely to receive an incorrect diagnosis of angina pectoris. Despite this, they had lower rates of angiography and coronary interventions compared to men and white people. Patients with atypical chest pain also faced significant risks for cardiac disease.
A study published in JAMA found that using sodium bicarbonate for hydration during coronary angiography does not reduce the risk of developing serious kidney problems compared to using sodium chloride. The results suggest that there is little difference in outcomes between the two hydration strategies.
A new non-invasive cardiac imaging technology has been found to be highly accurate in detecting coronary artery stenosis, comparable to the traditional and more expensive invasive method. The study, conducted at 16 sites, involved 230 research volunteers with chest pain but no known coronary artery disease.
A recent study by Harvard researchers found that coronary CTA is more cost-effective than current tests for diagnosing low-risk women with acute chest pain. The study suggests that CT angiography can reduce total healthcare costs by $380 and emergency department costs by $410 compared to standard care.
Researchers at Beth Israel Deaconess Medical Center have developed a new noninvasive method to detect and measure noncalcified plaque using voxel analysis and MDCTA. The technique was shown to be equally effective as catheter coronary angiography in identifying patients at risk for heart disease.
Hemosuccus pancreaticus is a rare cause of intermittent upper GI bleeding, often associated with chronic pancreatitis. Early diagnosis and treatment are crucial, with interventional radiology and surgical options available.
Coronary computed tomography angiography (CTA) may be misused as a screening tool for high-risk patients without symptoms. Experts, including Dr. Christopher M. Kramer, argue that the procedure exposes patients to radiation and contrast dye, posing more risk than benefit.
A new study suggests that low-dose CT coronary angiography can measure cardiac function effectively, offering a lower radiation dose alternative to traditional exams. The technique has the potential to replace high-radiation exams for patients with mobility or other issues.
The ExoSeal vascular closure device significantly reduced bleeding time, enabling patients to get up and walk around far sooner than with manual compression. The study found no access site complications at 30 days, a promising result for the safety and effectiveness of the device.
The XIENCE V everolimus-eluting stent demonstrated better clinical outcomes compared to the Taxus paclitaxel-eluting stent at two years, with a 40% lower overall MACE rate. The study found significant reductions in repeat procedures and heart attacks, but no difference in blood clotting rates.
Blunt cerebrovascular injuries can be accurately diagnosed using whole-body MDCT, rivaling the effectiveness of neck MDCT angiography. The study found that both methods had comparable accuracy in detecting these injuries.
Multicenter trials show CT angiography highly accurate in detecting coronary artery disease with sensitivity of 85% and specificity of 90%. The noninvasive exam was equal in accuracy to invasive angiography in identifying patients to be referred for angioplasty or bypass surgery.
Researchers found that fasting was associated with lower odds of being diagnosed with coronary artery disease (CAD) in patients who fasted. Fasting was linked to healthier arteries, even in people with diabetes, although the study does not recommend skipping meals for diabetics.
A recent study suggests that CT angiography can accurately diagnose aortic injuries in blunt trauma patients without the need for catheter angiography. In challenging cases, CTA offers a rapid and non-invasive diagnosis, potentially sparing patients from serious complications.
MDCT angiography is highly accurate in depicting intracranial aneurysms, outperforming digital subtraction angiography (DSA) in diagnostic accuracy. The technique can quickly determine the possibility of using minimally invasive treatment rather than open surgery.
Researchers at the University of Chicago Medical Center re-evaluated carotid artery narrowing standards, finding that existing methods may be too aggressive. The new standards, developed using high-resolution ultrasound techniques, indicate a lower threshold for determining significant narrowing.
Researchers developed a new imaging technique that combines functional and anatomical imaging to diagnose coronary artery disease more accurately. This 'synergy' approach uses software to integrate data from SPECT and CT angiography scans, providing clearer pictures of the heart muscle and coronary arteries.
Researchers at Mayo Clinic have successfully developed a protocol for performing coronary angiography on the same day as elective valve surgery, reducing the need for separate hospital visits and improving patient outcomes. The study, which evaluated 226 consecutive patients, showed that 28.3% had severe coronary artery disease requiri...
Pretreatment with high-dose clopidogrel (600 mg or more) reduces the risk of cardiac death or nonfatal heart attack by 50% during hospitalization and within 30 days after PCI. The study found no increase in major or minor bleeding, regardless of dose.
A minimally invasive stenting procedure has shown promising results in treating chronic mesenteric ischemia, a condition similar to intestinal angina. The technique was successful in 96% of patients, with over 90% experiencing relief from abdominal pain and weight gain.
A novel catheter technique successfully patched ventricular septal defects (VSDs) in nearly all patients, restoring normal blood circulation and relieving fluid backup in the lungs. After recovery, patients regained enough strength to safely undergo surgical repair or return to active lives.
The Endeavor III trial reports mixed findings on the new-generation stent, showing improved procedural success but higher late loss in angiographic studies at 8 months compared to the Cypher stent. At 2 years, clinical outcomes were equivalent between the two stents, with similar rates of death, heart attack, and repeat procedures.
Catheter-based aortic valve replacement using the CoreValve system improves aortic valve size and reduces heart failure severity in elderly patients. The procedure has been successfully performed on 17 high-risk patients, with all surviving the operation.
The symposium highlights pioneering percutaneous interventions for aortic valve replacement and mitral valve repair, with promising results. Catheter-based stem cell therapy also shows promise in regenerating scarred heart areas and halting enlargement of the heart.
Alain Cribier will describe the development and evolution of percutaneous aortic valve replacement, a breakthrough procedure for treating aortic stenosis. The Cribier-Edwards heart valve has been tested in clinical trials, with another device, CoreValve, also undergoing testing.
Researchers developed the largest registry of US patients with Takotsubo cardiomyopathy, aiding physicians in diagnosis and management. Most patients who survived the first 48 hours had a steady recovery, with normal heart function found in 29 out of 30 patients.
CT angiography (CTA) has been found to accurately detect ruptured cerebral aneurysms in patients with acute subarachnoid hemorrhage, with a sensitivity of 99.4%. The study, conducted at the Health Sciences Center in Winnipeg, Canada, involved 171 patients who underwent preoperative 3D CTA.
A new study reveals that contrast-enhanced 64-MDCT can accurately diagnose acute trauma to the aorta without the need for invasive catheter angiography. This eliminates the need for mobilizing an angiography team, allowing treatment to begin immediately after diagnosis.
A study by Charite Campus Benjamin Franklin in Berlin, Germany shows CT angiography is effective for detecting peripheral vascular disease. The technique outperforms digital subtraction angiography in diagnostic image quality and patient management decisions.
A novel MR angiography technique highly accurately identifies blockages in brain-supplying arteries and produces superior results compared to digital subtraction angiography (DSA) and multidetector computed tomography (CT) angiography.
The Society for Cardiovascular Angiography and Interventions recommends assessing kidney function, ensuring patient hydration, and minimizing NSAID use to lower the risk of contrast-induced nephropathy. CIN is estimated to occur in 1-3% of individuals undergoing procedures with contrast dyes.
Whole-heart MRI technology has advanced to detect heart disease more effectively, reducing motion blurring and improving image quality. The study found that the technique was accurate in detecting significant narrowing of coronary arteries in 87% of patients.
A new study of 20,000 patients found that contrast-enhanced magnetic resonance angiography (CE-MRA) significantly reduces costs compared to digital subtraction angiography (DSA). The study, conducted by the VA Cooperative Studies, suggests that CE-MRA could have saved the system over $13 million in costs during a 6-year period.
Researchers found that more people with AIDS died from common causes in 2004 compared to 1999. A survey of gay men revealed a significant gap between self-identified straight men who have sex with men and their actual behavior.