Computed Tomography

Cardiac computed tomography (CT) has become a primary cardiovascular imaging modality in the past 20 years, and was recommended as a 1A recommendation in the 2021 chest pain assessment guidelines. CT calcium scoring has became a primary risk assessment for coronary artery disease and whether patients should be on statins. Coronary CT angiography (CCTA) is used to for anatomical assessment of the arteries for plaque burden and to identify areas of blockage that may cause ischemia and heart attacks. Additional use of contrast CT perfusion or fractional flow reserve CT (FFR-CT) can offer physiological information on the function of the heart. CT plays a primary role in structural heart assessments for heart valves, repair of congenital defects and left atrial appendage occlusion (LAAO) for both pre-procedure planning and procedural guidance. Find more news on general radiology CT use.

Video interview with Martha Gulati, MD, was the lead author of the 2021 chest pain guidelines and shares impacts.

Cardiac CT gaining popularity due to chest pain guidelines, cost savings

Cardiologist Martha Gulati, MD, lead author of the 2021 chest pain guidelines, explained how the document may have contributed to the rise of cardiac CT. "These guidelines have made it harder for people to push back and say you don't need this test," she said. 

SCCT President Ed Nicol, MD, explains key trends trends in cardiac CT imaging at the 2023 meeting. #SCCT #SCCT23 #SCCT2023

Key trends and takeaways in cardiac CT at SCCT 2023

Several key trends at the 2023 annual meeting of the Society of Cardiovascular Computed Tomography were outlined by society President Ed Nicol, MD, including AI, reimbursement issue, business management discussions, and a growing interest in cardiac CT leading to record attendance this year.

HeartFlow's RoadMap technology where AI reads the image in a first pass to highlight areas of interest with for the radiologist or cardiologist on coronary CT scan. The technology was shown to reduce reading time by 25%.

Three studies show value of AI to speed cardiac CT reads and soft plaque evaluation 

AI to help interpret cardiac CT was shown to reduce exam read times to improve workflow efficiency, and improve patient diagnostics with additional information on soft plaques. Data was presented in three HeartFlow AI technology studies at SCCT 2023.

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Photon-counting technology offers new opportunities in imaging high-risk CAD patients

Coronary CT angiography is commonly used to assess patients at low or intermediate risk of CAD but is less effective in high-risk patients with an increased presence of coronary calcifications and stents due to the “blooming” effect they have on imaging.

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No need for updated imaging prior to major surgery in some cases, new data show

Prior chest imaging can sometimes be just as predictive of adverse events after surgery as updated imaging, according to new data set to be presented at the annual conference of the American College of Cardiology on March 5. 

Dual source CT scanners shown to expedite treatment in emergency settings

Dual source CT scanners can eliminate the need for beta blockers to control heart rates during coronary CTA exams.  

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Radiomics can predict major cardiac events using CCTA images

A CCTA-based radiomics method was recently found to be more accurate in identifying potentially problematic plaques than conventional CCTA anatomical parameters alone.

A CT coronary calcium scoring exam at Northwestern Medicine's Central DuPage Hospital in the Chicago Suburbs. Dave Fornell

The remaining gaps in evidence for cardiac CT

While the ACC/AHA 2021 Chest Pain Assessment Guidelines included cardiac CT angiography as a top level recommendation, gaps in evidence still need to be filled.

Around the web

The nuclear imaging isotope shortage of molybdenum-99 may be over now that the sidelined reactor is restarting. ASNC's president says PET and new SPECT technologies helped cardiac imaging labs better weather the storm.

CMS has more than doubled the CCTA payment rate from $175 to $357.13. The move, expected to have a significant impact on the utilization of cardiac CT, received immediate praise from imaging specialists.

The newly cleared offering, AutoChamber, was designed with opportunistic screening in mind. It can evaluate many different kinds of CT images, including those originally gathered to screen patients for lung cancer. 

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