CT

Abdominal CT imaging shows potential for diagnosing sarcopenia

By Kate Madden Yee

Abdominal CT imaging shows potential for the opportunistic diagnosis of sarcopenia, enabling radiologists to play a greater role in population health management.

April 18, 2025

AAPM responds to CT cancer risk study

In response to study results that link CT scans to new cases of cancer, the AAPM argues the benefits of these exams far outweigh the risks.

April 15, 2025

CT images best EHR coding, CT reports for sarcopenic obesity diagnosis

By Kate Madden Yee

CT images best electronic health record (EHR) and CT report data when it comes to diagnosing sarcopenia and sarcopenic obesity.

April 15, 2025

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CT estimated to cause 5% of new cancer cases

Researchers suggest that cancers associated with radiation from CT scans could eventually account for 5% of all new cases annually.

April 14, 2025

CT effective for tracking colon cancer lymph node distribution

By Kate Madden Yee

Using CT to track lymph node distribution in colon cancer patients is more effective at identifying metastasis than conventional testing.

April 8, 2025

Schematic diagrams and representative images of different distribution patterns of region lymph nodes detected at CT. (A) Vascular distribution pattern: All regional lymph nodes detected at CT have regular borders and are distributed along the vessels (arrowheads). (B-E) Coronal CT images in a (B) 34-year-old woman, (C) 51-year-old man, (D) 37-year-old man, and (E) 40-year-old man with microsatellite instability-high (MSI-H) colon cancer show multiple clear lymph nodes distributed along the supplying arteries or draining veins (arrowheads). (F) Jammed cluster pattern: At least three lymph nodes with blurred margins and clustered (circle). (G-I) Coronal CT images in a (G) 29-year-old man, (H) 35-year-old man, and (I) 67-year-old man and (J) axial CT image in a 43-year-old man with MSI-H colon cancer show several lymph nodes with blurred margins and clustered (circle). Movies 1-4 provide more details. (K) Fused pattern: Several poorly defined lymph nodes clustered and fused together (arrow). (L-O) Coronal CT images in a (L) 63-year-old woman, (M) 59-year-old man, (N) 49-year-old woman, and (O) 73-year-old man with MSI-H colon cancers show several lymph nodes fused (arrow). Image courtesy of Radiology.

China limits exports of rare earth elements, targets CT x-ray tubes

By Erik L. Ridley

China's Ministry of Commerce has announced export controls for several rare earth elements and launched investigations of imported CT x-ray tubes.

April 4, 2025

Elevated liver fat fraction helps predict MACE in diabetic patients

By Kate Madden Yee

Elevated liver fat fraction could be a prognostic factor for major adverse cardiovascular events (MACE) in patients with type 2 diabetes.

April 4, 2025

ALA report: LCS rates more than tripled between 2023 and 2024

By Kate Madden Yee

The ALA 2024 State of Lung Cancer report showed an increase in national lung cancer screening (LCS) rates from 4.5% in 2023 to 16% in 2024.

April 3, 2025

Ct Lung Damage Covid

Can use of other cancer screening tests boost uptake of LCS?

By Kate Madden Yee

Could the use of preventive health tests such as breast and colorectal cancer screening boost uptake of lung cancer screening (LCS) with low-dose CT?

April 2, 2025

AI identifies women at higher risk of MACE

An AI tool designed for coronary CT angiography can identify women at high risk for major adverse cardiovascular events (MACE).

March 31, 2025

CAC score of 0 indicate low heart event risk, even in older people

By Kate Madden Yee

PET/CT imaging indicates that a coronary artery calcium (CAC) score of 0 is an accurate indicator of low coronary heart event risk even as a person ages, investigators have reported.

March 29, 2025

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.

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