Video from RSNA 2019: Reducing radiation dose in medical imaging

Dec 2, 2019

2019 12 03 07 36 2126 Rsna 2019 Video Smith Bindman 400

CHICAGO - Is radiology making progress in reducing the radiation dose used in medical imaging exams? Maybe, but there is still much work to be done, according to Dr. Rebecca Smith-Bindman of the University of California, San Francisco.

Dr. Rebecca Smith-Bindman on reducing radiation dose.

How can AI best help in LDCT lung cancer screening?

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Watch how the NAEOTOM Alpha class was brought to life

Watch how the NAEOTOM Alpha class was brought to life

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2025 04 15 Radiology Chaves Figure1 Thumbnail

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

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CT estimated to cause 5% of new cancer cases

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How can AI best help in LDCT lung cancer screening?

A commercially available AI-based tool appears effective as a prescreener in low-dose CT lung cancer screening.

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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.

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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.

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2025 04 15 Radiology Chaves Figure1 Thumbnail

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.

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CT effective for tracking colon cancer lymph node distribution

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

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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

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

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Elevated liver fat fraction helps predict MACE in diabetic patients

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Ct Lung Damage Covid

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

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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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