Science Current Events | Science News | Brightsurf.com
 
Email a Friend Send to a friend
Printer Friendly Print CT angiography highly accurate, multicenter trials show

CT angiography highly accurate, multicenter trials show

November 27, 2007

CHICAGO - Computed tomography (CT) angiography is as accurate as an invasive angiogram in detecting coronary artery disease, according to the findings of the first two prospective multicenter 64-slice scanner trials presented today at the annual meeting of the Radiological Society of North America (RSNA).

"These two trials with comparable results clearly set the stage for the widespread adoption of and reimbursement for coronary artery CT examinations," said Gerald D. Dodd III, M.D., chair of the Department of Radiology at the University of Texas Health Science Center in San Antonio.




For the Coronary Artery Evaluation Using 64-Row Multidetector Computed Tomography Angiography (CORE-64) Trial, researchers at nine international centers studied 291 patients who were scheduled to undergo invasive coronary angiography for suspected or unknown coronary artery disease. The study found that 64-slice multidetector CT angiography was highly accurate in detecting blockages of greater than 50 percent, with a sensitivity of 85 percent and a specificity of 90 percent. The noninvasive exam was equal in accuracy to invasive angiography in its ability to identify patients to be referred for angioplasty or bypass surgery.

"Reliable assessment of the presence of coronary blockages and accurate prediction of coronary revascularizations are feasible with 64-slice CT coronary angiography," said presenter Marc Dewey, M.D., radiologist at Humboldt University Berlin, Charité, Germany. "Patients with low to intermediate risk of having coronary blockages are most likely to benefit from coronary CT angiography, since in those patients the necessity of invasive angiography is greatly reduced."

The Assessment by Coronary Computed Tomographic Angiography of Individuals UndeRgoing InvAsive Coronary AngiographY (ACCURACY) Trial compared 64-row coronary computed tomographic angiography (CCTA) to quantitative coronary angiography (QCA). The results demonstrated that CCTA is highly accurate in detecting coronary blockages in chest pain patients referred for invasive coronary angiography and is also an effective noninvasive method to exclude obstructive coronary blockages.

Sixteen institutions performed CCTA on 232 patients with typical or atypical chest pain prior to invasive coronary angiography. Findings were then compared to those of QCA, the reference standard used to quantify the results of the invasive coronary angiography.

A total of 82 blockages greater than 50 percent in 49 patients and 31 blockages greater than 70 percent were detected in 28 patients by QCA. Per-patient sensitivity and specificity of CCTA were 93 percent and 82 percent, respectively, for blockages greater than 50 percent, and 91 percent and 84 percent for blockages greater than 70 percent. In addition, negative predictive value was 97 to 99 percent.

"In a population of chest pain patients with a low to intermediate prevalence of obstructive coronary artery blockages, CCTA performed highly accurately compared to invasive coronary angiography," said presenter James K. Min, M.D., assistant professor of radiology and medicine at New York Presbyterian Hospital and director of the Cardiac Computed Tomography Laboratory and Cornell University Medical Center. "These findings demonstrate the high diagnostic performance of CCTA."

Radiological Society of North America



Related Angiography Current Events and Angiography News Articles Angiography Current Events and Angiography News RSS Angiography Current Events and Angiography News RSS
Cataract surgery does not appear associated with worsening of age-related macular degeneration
Age-related macular degeneration does not appear to progress at a higher rate among individuals who have had surgery to treat cataract, contrary to previous reports that treating one cause of vision loss worsens the other.

Stanford study recommends change in treating pulmonary embolisms
William Kuo, MD, was the on-call interventional radiologist one Friday night three years ago when he received a call from the intensive care unit at Stanford Hospital & Clinics.

Lung scintigraphy more reliable than CTA in excluding pulmonary embolism in pregnant patients
A medical imaging procedure known as lung scintigraphy may be more reliable than pulmonary CT angiography (CTA) for identifying or excluding pulmonary embolism (PE) in pregnant patients.

Calcium scans may be effective screening tool for heart disease
A simple, non-invasive test appears to be an effective screening tool for identifying patients with silent heart disease who are at risk for a heart attack or sudden death.

Coronary imaging techniques helps to identify plaques likely to cause heart attacks
Late-breaking results from the PROSPECT clinical trial shed new light on the types of vulnerable plaque that are most likely to cause sudden, unexpected adverse cardiac events, and on the ability to identify them through imaging techniques before they occur.

A consistent decline in heart attack rates following the implementation of smoking bans
Strongly enforced legislation to restrict smoking produces rapid and substantial reductions in community rates of heart attack, according to a meta-analysis published today in Circulation, the journal of the American Heart Association.

Radiologists find a technique to significantly reduce patient radiation dose during CT angiography
Radiologists have discovered that prospective electrocardiogram (ECG) gating allows them to significantly reduce the patient radiation dose delivered during computed tomography (CT) angiography, a common noninvasive technique used to evaluate vascular disease.

Comprehensive cardiac CT scan may give clearer picture of significant heart disease
A team of researchers led by Massachusetts General Hospital (MGH) radiologists has developed a computed-tomography-based protocol that identifies both narrowing of coronary arteries and areas of myocardial ischemia - restricted blood flow to heart muscle tissue - giving a better indication of clinically significant coronary artery disease.

What are the risk factors for rebleeding after negative angiography?
Acute non-variceal gastrointestinal bleeding accounts for approximately 20% of emergency room visits and 5% of admissions.

Imaging features of intraductal papillary mucinous neoplasms of the pancreas
The intraductal papillary mucinous neoplasms (IPMN) can evolve through all biological stages, from slight dysplasia to carcinoma.
More Angiography Current Events and Angiography News Articles
Abrams' Angiography: Interventional Radiology

Abrams' Angiography: Interventional Radiology
by Stanley Baum (Editor), Michael J Pentecost (Editor)

The Interventional Radiology volume of the landmark reference Abrams' Angiography has now been expanded and thoroughly revised to reflect dynamic advances in interventional radiology. More than 60 contributors representing a "Who's Who" of the specialty provide comprehensive, step-by-step coverage of all contemporary vascular and nonvascular interventional procedures. Major sections discuss today's equipment and describe interventions for specific disorders of each organ system, as well as for trauma, pediatric diseases, abscess drainage, and miscellaneous disorders. Fifteen new chapters cover cutting-edge innovations, including stent-grafts, radiofrequency ablation, CT angiography, MR angiography, uterine fibroid embolization, and vertebroplasty. More than 1,100 illustrations complement...

Diagnostic Cerebral Angiography

Diagnostic Cerebral Angiography
by Anne G Osborn (Author)

Univ. of Utah, Salt Lake City. Revised edition of: Introduction to Cerebral Angiography, c1980. Text is completely revised. Includes pathology, epidemiology, and imaging findings for most major and minor diseases that affect the craniocerebral vessels. Halftone illustrations and line drawings. DNLM: Cerebral Angiography.

CT and MR Angiography: Comprehensive Vascular Assessment

CT and MR Angiography: Comprehensive Vascular Assessment
by Geoffrey D Rubin (Author), Geoffrey D Rubin (Editor), Neil M Rofsky (Editor)

Written by world-renowned experts in both CT angiography and MR angiography, this landmark work is the first comprehensive text on vascular imaging using CT and MR. It provides a balanced view of the capabilities of these modalities and practical guidelines for obtaining and interpreting images. More than 2,200 illustrations complement the text. Chapters co-authored by CT and MR authorities cover imaging of all coronary and non-coronary arteries and veins. Each chapter details indications, imaging strategies, normal and variant anatomy, diseases, surgical management, and pitfalls. The authors compare the utility of CT and MR in specific clinical situations and discuss the role of conventional angiography and ultrasound where appropriate.

BD Angiography Needles for Seldinger Technique, 18 G x 2 3/4", 10/Bx, BD 408295

BD Angiography Needles for Seldinger Technique, 18 G x 2 3/4", 10/Bx, BD 408295
by BD

A multi-purpose needle for traditional or digital angiography. Winged design provides positive control for arterial or venous punctures. Funnel shaped hub facilitates insertion of guide wire. Lightweight plastic BD Luer-Lok hub provides excellent "feel" and balance. Thin-wall needle for maximum I.D., minimum O.D. Sharp bevel for easy vessel entry.

Atlas of Vascular Anatomy: An Angiographic Approach

Atlas of Vascular Anatomy: An Angiographic Approach
by Renan Uflacker (Author)

This atlas details the vascular anatomy seen on angiographic images and in the new imaging modalities. The book presents the complete anatomy of the arteries, veins, and lymphatic system by body region. Full-color drawings are correlated with angiographic images to guide evaluation and management of vascular disease and performance of endovascular procedures. For this Second Edition, Dr. Uflacker has added more than 100 pictures and extensively reviewed the anatomical description of the vascular system. He has expanded the cardiac chapter with new CTA and MRI images, added percutaneous access where needed, and expanded the coverage of lower extremity anatomy.

Understanding Cardiac Arrhythmias:  Current and Emerging Treatments

Understanding Cardiac Arrhythmias: Current and Emerging Treatments

Episodes of dizziness and loss of consciousness are unsettling and potentially life-threatening. But as our population ages, these problems become more common. Often, they stem from heart rhythm irregularities: cardiac arrhythmias. So how do we treat them? This program looks at different kinds of cardiac arrhythmias, as well as the variety of new and emerging treatments used to control them. Paul Wang, MD, is a Professor of Medicine in the Department of Cardiology at the Stanford University School of Medicine. His specialty is cardiology, with subspecialties in arrhythmias, atrial fibrillation, and syncope. His research interests include atrial fibrillation, pacemakers and defibrillators, catheter ablation, and hypertrophic cardiomyopathy. Dr. Wang was educated at the...

Heavy Duty Angiography Jackets, 14 1/2 x 14 1/2, 11 pt. Manila, 250/Box (ASEANGST)

Heavy Duty Angiography Jackets, 14 1/2 x 14 1/2, 11 pt. Manila, 250/Box (ASEANGST)
by AMES COLOR FILE

Item #: ASEANGST. Heavy-Duty Angiography Jackets
11 pt. Manila stock with orange copy. Offset double thumbcut. 14-1/2 x 14-1/2, including 1/2" self expansion. 250 jackets per box.

Customers also search for: AMES;Angiography;File;File Jackets;Manila

  Basic Techniques of Fluorescein Angiography [VHS]
Starring: Michael P. Kelly



Grossman's Cardiac Catheterization, Angiography, and Intervention

Grossman's Cardiac Catheterization, Angiography, and Intervention
by Donald S Baim (Editor)

The premier reference on cardiac catheterization is now in its thoroughly revised Seventh Edition, reflecting the rapid evolution and growing clinical use of interventional techniques. The completely revamped interventional section includes new material on treatment of pediatric and adult congenital heart disease, as well as on coronary atherectomy, thrombectomy, distal embolic protection devices, bare metal and drug-eluting stents, and percutaneous valve therapies. Other significantly revised chapters include pulmonary angiography, endomyocardial biopsy, and circulatory assist devices. This edition's companion DVD features more than 100 digital cases, plus more than 20 animations showing the actions of various invasive and interventional devices. "Doody's Core Titles™...

Cardiac CT Angiography Manual

Cardiac CT Angiography Manual
by Robert Pelberg (Author), Wojciech Mazur (Author)

To date, few, if any, simplified, concise, relatively small and portable books exist to ease the training in the field of cardiac CTA. There are no books written from the point of view of secondary end users who are secondarily trained. Books to date are mainly extensive, large texts that assume a certain basic knowledge. A so called "manual" and reference guide explaining this technique from beginning to end in simple prose will thus be of tremendous value.



© 2009 BrightSurf.com