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CTA improves, complicates management of PE
Researchers in Canada and the U.S. have found CT angiography to be as safe and accurate as ventilation/perfusion lung scans for ruling out pulmonary emboli. Results from what may be the first study of its kind suggest, however, that CTA could also spot many clinically irrelevant thrombi.
Researchers in Canada and the U.S. have found CT angiography to be as safe and accurate as ventilation/perfusion lung scans for ruling out pulmonary emboli. Results from what may be the first study of its kind suggest, however, that CTA could also spot many clinically irrelevant thrombi.
Dr. David R. Anderson and colleagues at one U.S. and four Canadian tertiary-care centers enrolled 1417 consecutive patients with suspected PE between May 2001 and April 2005. Patients were randomized to undergo either V/Q scanning (n = 716) or CTA (n = 701). Almost 20% of patients randomized to CTA were diagnosed with PE or deep vein thrombosis during the initial evaluation period, while 14.2% of patients in the V/Q scanning group had a similar diagnosis. Researchers cautioned that CTA could lead in many cases to unwarranted anticoagulant therapy. They published their findings in the Dec. 19 issue of the Journal of the American Medical Association.
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.
