Ultrasonographic Assessment of Diaphragmatic Thickening and Excursion In The Evaluation of Obstructive Sleep Apnea
Year: 2025
Type: article
Abstract: measurement (LSM), respectively.MRE and MRI PDFF served as reference standards for fibrosis and steatosis, respectively.The diagnostic accuracy of simulated FibroScan ROIs was assessed, with agreement analyzed using Cohen's kappa test.Results: Among 118 patients, a strong correlation was observed between simulated FibroScan ROIs and global MRE and PDFF measurements (r = 0.72 and 0.96, respectively; p < 0.0001).However, variability was noted according to fibrosis and steatosis levels.For advanced fibrosis and cirrhosis, FibroScan ROI sensitivity decreased from 91.8% to 83.3%, while specificity and accuracy improved from 75.6% and 85.6% to 95% and 93.2%, respectively.Similarly for steatosis, sensitivity dropped from 89.2% to 88.2%, but specificity and accuracy increased from 86.4% and 87.3% to 99% and 97.5%, respectively.Agreement for LSM ranged from moderate to substantial (0.50-0.75), while for steatosis it ranged from substantial to nearly perfect (0.67-0.89).Conclusions: This study indicates that simulated FibroScan ROIs within an MR exam provide comparable diagnostic accuracy for assessing fibrosis and steatosis as a global liver evaluation.Nonetheless, the effectiveness of these measurements is influenced by the severity of liver disease. The Importance of Ultrasound in Detection of Renal Artery StenosisAuthor: Dawn Boynton, MBA, RDMS, RVT, RT(R)Objectives: Demonstrate the ultrasound appearance of renal artery stenosis.Show dampened "parvus tardus" pulsed doppler waveforms.Illustrate "twinkle artifact," or color comet tail artifact as the result of a renal stone.Methods: Ultrasound imaging using B-mode imaging, pulsed wave and color Doppler flow of the renal arteries can detect renal artery stenosis when performed by a skilled sonographer.Renal artery stenosis or occlusive disease results in decreased blood flow to the kidneys.Prompt interventional treatment of proximal renal artery stenosis can be performed using stenting and ballooning to reduce hypertension and restore and preserve renal function.Results: The goal of intervention with angioplasty and stenting is to preserve renal function and improve blood pressure control.With long standing RAS if intraparenchymal resistive index (RI) are > 0.80 irreversible renal damage has occurred therefore stenting may not improve renal function.Conclusions: When performed by a skilled sonographer, ultrasound can demonstrate renal artery stenosis with color and Doppler flow.Flow to a stenotic renal artery can be improved with stenting and ballooning.Ultrasound can also demonstrate renal stones and a comet tail artifact.
Language: English
Subfield: Physiology
Field: Medicine
Domain: Health Sciences
Open Access status: bronze
OpenAlex ID: W7128598156
FWCI:
Cites:
Cited by:
Related to: