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.

Iodine contrast being loaded into a contrast injector in preparation for a cardiac CT scan at Duly Health and Care in Lisle, Illinois. The contrast shortage is causing some healthcare organizations to postpone exams and procedures and ration contrast supplies. Photo by Dave Fornell

How to manage patients in need of contrast-enhanced imaging following an allergic-like reaction

Up to one-third or more of patients who experience moderate or severe allergic-like reactions to ICM must have their imaging protocols revised when subsequent exams involving contrast are requested.

March 22, 2023
Wrist

Is ultra low-dose CT a feasible option for identifying fractures?

Such scans offer significant reductions in radiation exposure, but there is concern that lower dosage might sacrifice image quality, causing readers to miss important findings. 

March 15, 2023
COVID-19 coronavirus

Vaccinated patients more likely to exhibit normal chest CT after COVID infection

Both vaccine status and variant type were shown to be associated with differing COVID severity and chest CT patterns. 

March 10, 2023
Reporting

Disease-specific reporting templates improve completeness, but uptake remains limited

A new paper published in Clinical Imaging details the impact of a high-resolution CT reporting template catered specifically to interstitial lung disease.

March 7, 2023
kid child pediatric MRI imaging

New data highlight inconsistencies in imaging protocols for pediatric appendicitis

Utilization of MRI for cases of suspected appendicitis in the pediatric population is beneficial, yet its use varies across institutions.

March 6, 2023

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. 

March 2, 2023

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.  

March 1, 2023
CT of coronavirus pneumonia, a solitary rounded ground-glass opacity (GGO) pattern. A 51-year-old woman in China presented in January 2020 without fever, but had close contact with positive patients. Top, baseline axial unenhanced chest CT obtained 6 days before the first positive PCR test. Bottom, chest CT scan 4 days later shows the size increase of the lesion (arrow). Image courtesy of RSNA. #COVID #SARSCoV2

How effective are chest CT severity scores in managing COVID?

While the studies on these systems have proven them to be effective in diagnosing and treating COVID in specific cohorts, the varying settings in which they were used can make it difficult to derive definitive conclusions on their efficacy.

February 16, 2023

Around the web

Automated AI-generated measurements combined with annotated CT images can improve treatment planning and help referring physicians and patients better understand their disease, explained Sarah Jane Rinehart, MD, director of cardiac imaging with Charleston Area Medical Center.

Two advanced algorithms—one for CAC scores and another for segmenting cardiac chamber volumes—outperformed radiologists when assessing low-dose chest CT scans. 

"Gen AI can help tackle repetitive tasks and provide insights into massive datasets, saving valuable time," Thomas Kurian, CEO of Google Cloud, said Tuesday. 

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