CHICAGO, Nov. 29, 2016 /PRNewswire-USNewswire/ -- Researchers using coronary computed tomography angiography (CCTA) have found no association between light to moderate alcohol consumption and coronary artery disease (CAD), according to a study being presented today at the annual meeting of the Radiological Society of North America (RSNA). Some previous studies have suggested that light alcohol consumption may actually reduce the risk for CAD. However, data regarding regular alcohol consumption and its association with the presence of CAD remains controversial. For the new study, researchers looked at alcohol consumption, type of alcohol consumed, and presence of coronary plaques using CCTA. "CCTA is an excellent diagnostic modality to noninvasively depict the coronary wall and identify atherosclerotic lesions," said study author Júlia Karády, M.D., from the MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center at Semmelweis University in Budapest, Hungary. "Furthermore, we're able to characterize plaques and differentiate between several types. Prior studies used cardiovascular risk factors—like high cholesterol levels—and cardiovascular outcomes to study the effects of alcohol, but our study is unique in that we analyzed both drinkers and non-drinkers using CCTA, which may shed some light on how alcohol may or may not contribute to the development of fatty plaques in the arteries of the heart." The researchers studied 1,925 consecutive patients referred for CCTA with suspected CAD. Information on alcohol consumption habits was collected using questionnaires about the amount and type of alcohol consumed. Using an in-house reporting platform that contained the patients' clinical and CCTA data, researchers were able to assess the relationship between atherosclerosis, clinical risk factors and patient drinking habits. "About 40 percent of our patients reported regular alcohol consumption, with a median of 6.7 alcohol units consumed weekly," Dr. Karády said. One unit translates to approximately 2 deciliters (dl) or 6.8 fluid ounces of beer, 1 dl or 3.4 ounces of wine, or 4 centiliters (cl) or 1.35 ounces of hard liquor.