News | August 07, 2009

Study Shows CTA Evaluations Are More Cost Effective than Angiography

August 7, 2009 – Using 64-slice CT coronary angiography can avoid further invasive angiographies, which can add up to significant cost savings, according to a new study in the American Journal of Cardiology (August 2009, vol. 104, issue 4, pages 498-500).

Researchers from the Baylor University Medical Center, Jack and Jane Hamilton Heart and Vascular Hospital, Dallas, Texas, said in a real world, clinical setting the negative predictive value of low-risk CTA is very high and exceptionally helpful in predicting freedom from events for up to three years. They said 64-slice CT coronary angiography is being used more often in the evaluation of patients with chest pain and the strength of this test is its high specificity and negative predictive value in exclusion of coronary artery disease (CAD).

However, they say its use remains controversial because there are theoretical risks of radiation, additional costs of the test, and no long-term data to suggest that excluding CAD by use of this test results in positive patient outcomes. A total of 436 patients underwent 64-slice CTA because of chest pain thought to be anginal. Cardiac CT was ordered by the primary physician or cardiologist based on a low to intermediate pretest probability of flow-limiting CAD. A smaller subset of patients initially underwent stress testing but had equivocal findings or continued symptoms that warranted further evaluation.

Of the total patient cohort, 376 had no significant CAD based on CTA results. Of the 60 patients who were believed on CTA to have flow-limiting CAD, 34 (57 percent) ended up having percutaneous coronary intervention or coronary artery bypass grafting. The remaining 26 patients (43 percent) did not have true flow-limiting disease on coronary catheterization and were treated medically. With follow-up of 36 months, all patients with minimal or no disease by CTA were free of events or intervention.

For more information: www.ajconline.org

Related Content

Researchers Awarded 2018 Canon Medical Systems USA/RSNA Research Grants
News | Radiology Imaging | November 13, 2018
The Radiological Society of North America (RSNA) Research & Education (R&E) Foundation recently announced the...
ContextVision Introduces AI-Powered Image Enhancement for Digital Radiography
Technology | Artificial Intelligence | November 09, 2018
With the integration of deep learning technology, ContextVision takes digital radiography to new levels with its latest...
The Fujifilm FCT Embrace CT System displayed for the first time at ASTRO 2018.
360 Photos | 360 View Photos | November 07, 2018
Fujifilm's first FDA-cleared compu...
MaxQ AI Receives FDA Clearance for Accipio Ix Intracranial Hemorrhage Platform
Technology | Artificial Intelligence | November 07, 2018
MaxQ AI announced that its Accipio Ix intracranial hemorrhage (ICH) detection software has received 510(k) clearance...
GE Healthcare Discovery RF Gen 2 system displayed at ASTRO 2018. It is a dedicated computed tomography (CT) scanner for radiation oncology
360 Photos | 360 View Photos | November 07, 2018
This is the GE Healthcare Discovery RF Gen 2 system displayed at the ...
Siemens Healthineers Announces FDA Clearance of Cios Spin Mobile 3D C-Arm
Technology | Mobile C-Arms | November 06, 2018
Siemens Healthineers announced the U.S. Food and Drug Administration (FDA) clearance of the Cios Spin, a new mobile C-...
Results of the vertebrae-based analysis (383 vertebrae in 34 patients) for detection of BME.

Results of the vertebrae-based analysis (383 vertebrae in 34 patients) for detection of BME.

Sponsored Content | Case Study | Computed Tomography (CT) | November 06, 2018
The following is a summary of a study published in the
The NeuViz 16 Essence from Neusoft Medical Systems.

The NeuViz 16 Essence from Neusoft Medical Systems.

Feature | Computed Tomography (CT) | November 05, 2018 | By Melinda Taschetta-Millane
According to an industry mark...
Carestream Spotlights Healthcare IT and Imaging Systems at RSNA 2018
News | Information Technology | October 31, 2018
Carestream announced it will be displaying several imaging and healthcare information technology (IT) offerings at the...
IMRIS, Siemens Strengthen Collaboration in Hybrid OR Neurosurgical Market
News | Hybrid OR | October 24, 2018
IMRIS, Deerfield Imaging, in partnership with Siemens Healthineers, announced a strengthened collaboration to advance...