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MR precisely measures vessels after RF ablation
A study coordinated by German researchers has documented that MR works as well as x-ray angiography for measuring the diameter of peripheral vascular vessels after radio-frequency ablation.
A study coordinated by German researchers has documented that MR works as well as x-ray angiography for measuring the diameter of peripheral vascular vessels after radio-frequency ablation.
Quantitative vessel analysis was performed with MR and x-ray angiography on the day after and three months after RF catheter ablation of atrial myofibrils at the orifice of the pulmonary veins in 46 patients with atrial fibrillation. The ostium and proximal 20 mm of all 138 pulmonary veins were measured using MRI acquired with a nongated, contrast-enhanced 3D FISP sequence followed by 3D reconstruction and quantitative vessel analysis. Dr. Thorston Dill and colleagues at the Kerckhoff Heart Center in Bad Nauheim, Germany, performed the exams in an average of six minutes.
Dill observed no significant difference between the MRI and the x-ray angiography measures. Average diameter size with MRI was 15.3 mm compared with 15 mm with angiography.
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.
