PET with CT colonography provides an alternative for detecting polyps and cancer in the colon, according to a study published in the Journal of Nuclear Medicine. PET with CT colonography (CTC) is especially helpful because it does not require bowel preparation.
The study, involving 56 patients, is the largest to date investigating PET CTC in patients without bowel preparation. The patients underwent a PET CTC two weeks before their scheduled colonoscopy, the standard diagnostic test for colorectal cancer.
CTC sensitivity for polyps 6 mm or larger was 92.9% and was not improved by the addition of PET. But by combining PET with CTC, per-patient positive predictive value for a polyp 10 mm or greater jumped from 73% to 100% (J Nucl Med 2010;51:854-861).
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.