Computed Tomography

Computed tomography (CT) is a fast and accurate imaging modality often used in emergency settings and trauma imaging. CT scans, with or without (or both) iodinated contrast are frequently used to image the brain, chest, abdomen and pelvis, but also have post-imaging reconstructive capabilities for detailed orthopedic imaging. It is now a standard imaging modality in emergency rooms to quickly assess patients. CT uses a series of X-ray images shot as the gantry rotates around the patient. Computer technology assembles these into into a dataset volume than can be slices on any access, or advanced visualization software can extract specific parts of the anatomy for study. Find more content specific to cardiac CT.

CT imaging showing the congenital heart defect of left heart hypoplastic syndrome.

VIDEO: Congenital heart imaging with cardiac CT

As the population of patients with adult congenital heart disease grows, they are presenting to adult cardiology clinics and being imaged with CT. Many also do not have access or cannot be imaged by MRI, said Renee Bullock-Palmer, MD.

Representative cases showing pneumonia extents and patterns on chest X-ray (CXRs) and CT images. (E and F) A 36-year-old male with no history of vaccination for COVID- 19. The patient had no history of comorbidity. Axial chest CT image obtained on the same day showing unilateral ground-glass opacity with a nonrounded morphology and non-peripheral distribution in the left upper lobe (arrows). RSNA Image. COVID on X-ray, CT scan. What does COVID look like in medical imaging? Example of COVID imaging.

Vaccinated vs unvaccinated, Delta vs Omicron—how do these factors impact clinical and imaging features?

Vaccination rates likely had a role in reducing disease severity during Omicron, a new paper published in Radiology suggests.

New recommendations for cardiac CT in cardio-oncology imaging

The statement was written to fill gaps in recommendations from prior consensus statements and guidelines in regards to the use of CCT in cardio-oncology, including use of calcium scoring and ruling out coronary disease when cardiac function is impaired.

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Experts concerned with radiation doses in young women call for stricter ordering criteria for CT exams

Experts found that compared to the average effective doses of organs, breast doses were higher, representing increased risks of breast cancer for women. 

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'Radiologic serendipity' a common trigger event that ends in thyroid surgery in asymptomatic patients

In this cohort, experts found that just 34% of surgeries were performed on symptomatic patients, which shifted their focus to other potential modes of detection.

Examples of structural heart transcatheter valve replacement procedure planning CT scans and post procedure followup for TMVR and TAVR.

VIDEO: CT imaging for TAVR and TMVR structural heart interventions

Joao Cavalcante, MD, director, cardiac MRI and structural CT labs, Minneapolis Heart Institute, discusses the use of cardiac CT imaging to plan and guide structural heart procedures. 

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AI identifies pancreatic cancer frequently missed on CT

Specifically, the computer-aided detection (CAD) tool is capable of identifying lesions that are less than 2 cm.

VIDEO: Gender differences in women with cardiovascular disease and implications for imagers

Erin D. Michos, MD, co-editor in chief of the American Journal of Preventive Cardiology, discusses gender differences in heart disease presentations.

Around the web

Positron, a New York-based nuclear imaging company, will now provide Upbeat Cardiology Solutions with advanced PET/CT systems and services. 

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.

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