Publications by authors named "R L Ehman"
Article Synopsis
- The study evaluates MR elastography (MRE) biomarkers to understand how repetitive head impacts (RHIs) affect the mechanical separation between the skull and brain in 80 asymptomatic participants.
- Significant differences in mechanical parameters were observed, with high RHI exposure showing increased rotational transmission and altered strain ratios compared to no and low RHI groups, indicating poorer decoupling performance.
- The findings suggest that MRE can serve as an early detection tool for the negative effects of head impacts on skull-brain interactions, highlighting the need for monitoring in contact sports.
Parotid glands are one of the most common sites for salivary gland tumors. Conventional imaging techniques have limited usefulness in the quantitative assessment of the parotid glands, making it difficult to differentiate between healthy tissue and tumors, as well as between benign and malignant tumors. Magnetic resonance elastography (MRE) is a non-invasive technique that may potentially overcome these limitations.
View Article and Find Full Text PDFPurpose: To evaluate magnetic resonance elastography (MRE)-based liver stiffness measurement as a biomarker to predict the onset of cirrhosis in early-stage alcohol-related liver disease (ALD) patients, and the transition from compensated to decompensated cirrhosis in ALD.
Methods: Patients with ALD and at least one MRE examination between 2007 and 2020 were included in this study. Patient demographics, liver chemistries, MELD score (within 30 days of the first MRE), and alcohol abstinence history were collected from the electronic medical records.
Article Synopsis
- The study aimed to develop a dual-frequency MR elastography protocol that measures liver stiffness at both 30 Hz and 60 Hz in one exam, focusing on the potential for inflammation biomarkers at the lower frequency.
- Involving 106 patients with chronic liver disease and healthy individuals, the study assessed the success rates and quality of liver stiffness measurements, finding high success rates at 97.5% and 91%.
- Overall, the second harmonic MRE showed excellent agreement with conventional methods but lower image quality scores, indicating its effectiveness and reliability in liver assessments.