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.

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Photon-counting CT/AI combo improves multiple myeloma detection

When combined with artificial intelligence-based noise reduction techniques, new photon-counting CT technology can increase the detection of bone disease while also decreasing radiation exposure. 

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New analysis highlights effectiveness of low-dose CT lung cancer screening

While the incidence of lung cancer did not significantly differ from start to finish, stage-specific incidence did.

bone and soft tissue tumors

Radiologists' understanding of tumor 'mimics' vital when assessing bone and soft tissue lesions

Authors of the new EJR paper explained that, although most of these tumors present in a similar way—with a lump or localized pain—their origins are wide-ranging and require the use of additional imaging to characterize the lesion. 

Omnipaque and Visipaque still listed among the FDA's drug shortages

According to the FDA’s most recent update, some presentations will remain out of stock or backordered until January 2023. 

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Performance of RSNA's COVID-19 chest CT guidelines studied in vaccinated vs unvaccinated

True positive rates of COVID pneumonia on chest CT are significantly lower in patients who are vaccinated against the virus in comparison to their unvaccinated peers. 

Automated CT body composition analysis predicts risk of stroke and heart attack

Researchers observed visceral fat area (VFA) measurements derived from abdominal CT scans to be associated with increased cardiovascular risk. 

long covid lung CT

Experts describe how long-term lung abnormalities of COVID patients present on imaging

Up to one-third of patients hospitalized with COVID-19 pneumonia have abnormalities on chest CT 12 months after infection.

Ischemic stroke shown in CT scans. Image courtesy of RSNA

VIDEO: AI for stroke detection on CT imaging

Bibb Allen, MD, FACR, chief medical officer of the American College of Radiology (ACR) Data Science Institute, explains the trend of using AI for the automated detection of stroke on computed tomography (CT) imaging and the need to include radiologists on the stroke care team.

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Around the web

Cardiovascular Business
Positron partners with Upbeat Cardiology Solutions to improve cardiac PET/CT access

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

Cardiovascular Business
Global shortage of nuclear imaging isotopes may be over

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.

Cardiovascular Business
‘A huge win’: CMS significantly increases Medicare payments for cardiac CT

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.