- AI
- Molecular Imaging
- CT
- X-Ray
- Ultrasound
- MRI
- Facility Management
- Mammography
Second-hand smoke falls to MR
The 30-year search for direct quantitative evidence linking second-hand smoke and lung disease ended at the 2007 RSNA meeting with a study that made the connection.
The 30-year search for direct quantitative evidence linking second-hand smoke and lung disease ended at the 2007 RSNA meeting with a study that made the connection. Collaborators at University of Virginia School of Medicine in Charlottesville and Children's Hospital of Philadelphia used inhaled hyperpolarized helium-3 and diffusion MRI to break through long-standing technical barriers. MR physicist Dr. Chengbo Wang, Ph.D., explained that high fMRI apparent diffusion coefficient values correlated with enlarged lung aveoli and damaged lungs, while low ADC values related to small aveoli and normal pulmonary function. Elevated ADC was found in 4% of subjects with infrequent exposure to second-hand smoke (A), 27% with high exposure (B), and 67% of current and former smokers. The findings could help build support for legislation that would tighten restrictions against public exposure to second-hand smoke, Wang said. (image provided by C. Wang).
MRI-Based AI Radiomics Model Offers 'Robust' Prediction of Perineural Invasion in Prostate Cancer
July 26th 2024A model that combines MRI-based deep learning radiomics and clinical factors demonstrated an 84.8 percent ROC AUC and a 92.6 percent precision-recall AUC for predicting perineural invasion in prostate cancer cases.
Breast MRI Study Examines Common Factors with False Negatives and False Positives
July 24th 2024The absence of ipsilateral breast hypervascularity is three times more likely to be associated with false-negative findings on breast MRI and non-mass enhancement lesions have a 4.5-fold likelihood of being linked to false-positive results, according to new research.
Can Polyenergetic Reconstruction Help Resolve Streak Artifacts in Photon Counting CT?
July 22nd 2024New research looking at photon-counting computed tomography (PCCT) demonstrated significantly reduced variation and tracheal air density attenuation with polyenergetic reconstruction in contrast to monoenergetic reconstruction on chest CT.
