CT

Thoracic aortic calcification data could help predict CAC risk

By Kate Madden Yee

Adding thoracic aortic calcification data to coronary artery calcification (CAC) models shows promise as a risk prediction biomarker for CAC in asymptomatic patients undergoing chest CT.

March 27, 2025

Representative examples of visual TAC categories, assessed on chest CT in asymptomatic individuals undergoing general health screening (blue indicates segmented TAC at level of aortic arch). Axial (A) and sagittal volume-rendered (B) images in 42-year-old patient. AI-based quantification yielded TAC volume of 101 mm3 and TAC Agatston score of 105. Examination was assessed as showing visually mild TAC. Axial (C) and sagittal volume-rendered (D) images in 57-year-old patient. AI-based quantification yielded TAC volume of 834 mm3 and TAC Agatston score of 993. Examination was assessed as showing visually moderate TAC. Axial (E) and sagittal volume-rendered (F) images in 65-year-old patient. AI-based quantification yielded TAC volume of 4872 mm3 and TAC Agatston score of 5848. Examination was assessed as showing visually severe TAC. Images and caption courtesy of the AJR.

Nociceptive responses to contrast CT aren't necessarily pathology

By Kate Madden Yee

Nociceptive responses to contrast CT imaging such as intense warmth, urinary urgency, a metallic taste, dry mouth, and mild discomfort or pain aren't necessarily indicators of adverse contrast reactions.

March 26, 2025

Contrast Injector

CT reveals autoimmune features linked to indeterminate pneumonia

By Kate Madden Yee

CT sheds light on autoimmune features associated with idiopathic pulmonary fibrosis and usual interstitial pneumonia.

March 25, 2025

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AAPM: CMS measure for reporting CT radiation dose riddled with 'ambiguities'

By Kate Madden Yee

Radiation dose and image quality performance measures for CT imaging accepted by the U.S. Centers for Medicare and Medicaid Services (CMS) in 2023 are "ambiguous" and need to be reconsidered, according to the AAPM.

March 25, 2025

2021 LCS guidelines increased uptake, but disparities persist

By Kate Madden Yee

Updated guidelines for lung cancer screening from the USPSTF in 2021 increased adherence, but disparities persist among particular patient populations.

March 20, 2025

Adherence to LCS decreases after baseline screening

By Kate Madden Yee

Adherence to lung cancer screening (LCS) with low-dose CT (LDCT) decreases after baseline imaging, according to a new study.

March 19, 2025

PCCT proves effective for estimating liver fat fraction

By Kate Madden Yee

Photon-counting CT (PCCT) is effective and accurate for estimating liver fat fraction.

March 18, 2025

Ultralow-dose CT identifies pneumonia in immunocompromised patients

By Kate Madden Yee

Ultralow-dose CT images "denoised" by an AI algorithm can effectively diagnose pneumonia in patients with weakened immune systems.

March 13, 2025

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CTC for colorectal cancer screening is at an 'inflection point'

By Kate Madden Yee

The use of CT colonography (CTC) for colorectal cancer screening is at an "inflection point" after its Medicare reimbursement approval in 2024

March 12, 2025

AI boosts identification of incident vertebral fractures on chest CT

By Kate Madden Yee

An AI algorithm that measures 3D whole thoracic vertebral bone mineral density on conventional chest CT can help predict incident vertebral fractures.

March 11, 2025

Back Spine Skeleton

PCCT reduces dose on lung cancer screening CT

By Kate Madden Yee

Photon-counting CT (PCCT) technology can yield significant dose reduction on CT lung cancer screening exams, researchers have reported.

March 10, 2025

Use thin slices on CT for preop periampullary adenocarcinoma imaging

By Kate Madden Yee

Preoperative CT in patients with periampullary adenocarcinoma should include thin slices to reduce the chance of a terminated Whipple procedure.

March 6, 2025

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