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MRA techniques without contrast address NSF fears
Noncontrast MR angiography sequences could one day replace conventional contrast-enhanced MRA for evaluation of major arteries and veins of the thoracic region. They may provide an alternative for patients who risk developing nephrogenic systemic fibrosis and other contrast-related complications.
Noncontrast MR angiography sequences could one day replace conventional contrast-enhanced MRA for evaluation of major arteries and veins of the thoracic region. They may provide an alternative for patients who risk developing nephrogenic systemic fibrosis and other contrast-related complications.
Dr. Anderanik Tomasian, a radiologist at the University of California, Los Angeles, and colleagues enrolled 30 consecutive patients with known or suspected disease who underwent free-breathing ECG-gated steady-state free precession noncontrast MRA and high-resolution 3D contrast-enhanced MRA of the thorax, both at 1.5T. They found that noncontrast MRA allowed diagnosis of aortic thrombosis, dilatation, coarctation, and dissection as well as diagnosis of superior and inferior vena cava conditions. Total scanning time with this sequence ranged from five to 10 minutes.
Tomasian presented the data at the 2007 North American Society for Cardiac Imaging meeting in Washington, DC.
Study Reaffirms Low Risk for csPCa with Biopsy Omission After Negative Prostate MRI
December 19th 2024In a new study involving nearly 600 biopsy-naïve men, researchers found that only 4 percent of those with negative prostate MRI had clinically significant prostate cancer after three years of active monitoring.
Study Examines Impact of Deep Learning on Fast MRI Protocols for Knee Pain
December 17th 2024Ten-minute and five-minute knee MRI exams with compressed sequences facilitated by deep learning offered nearly equivalent sensitivity and specificity as an 18-minute conventional MRI knee exam, according to research presented recently at the RSNA conference.
Can Radiomics Bolster Low-Dose CT Prognostic Assessment for High-Risk Lung Adenocarcinoma?
December 16th 2024A CT-based radiomic model offered over 10 percent higher specificity and positive predictive value for high-risk lung adenocarcinoma in comparison to a radiographic model, according to external validation testing in a recent study.
