AI Article Synopsis
- This study aimed to compare ultrasound (US) and magnetic resonance imaging (MRI) for assessing tenosynovitis in patients with rheumatoid arthritis, exploring whether US B-flow imaging (BFI) could replace Doppler US techniques.
- Fifteen patients were evaluated using both US and MRI, followed by image fusion to analyze differences in tendon and sheath areas, alongside a semi-quantitative scoring system.
- Results showed that US and MRI had high agreement in assessing tenosynovitis, but BFI was not found to be a suitable alternative to color Doppler for measuring blood flow in tendon sheaths.
Article Abstract
The aim of this study was to compare the assessment of tenosynovitis by ultrasound (US) and magnetic resonance imaging (MRI) using the image fusion technique and to investigate whether US B-flow imaging (BFI) is an alternative to Doppler US when assessing tenosynovitis. 15 patients with rheumatoid arthritis (RA) had US-verified tenosynovitis in the wrist/hand. An MRI was performed of the wrist/hand with subsequent repeated US and image fusion. Images were compared in three steps: 1. Visual image comparison, 2. Quantitative measurement of transverse areas of the affected tendon and tendon sheath, using two tendon measures on MRI, area 1 and area 2, excluding and including partial volume artifacts, respectively, 3. Assessment using the OMERACT semi-quantitative scoring systems for US and MRI. Furthermore, BFI was assessed as: 0: No flow, 1: Focal flow, 2: Multifocal flow, 3: Diffuse flow, in the tendon sheath. The median areas on US and MRI (areas 1 and 2) were 0.16 cm (25;75 pctl: 0.10; 0.25), 0.9 cm (0.06; 0.18) and 0.13 cm (0.10; 0.25), respectively, for included tendons and 0.18 cm (0.13; 0.26), 0.27 cm (0.20; 0.45) and 0.23 cm (0.16; 0.40) for tendon sheaths. No statistically significant difference was found between US tendon area and MRI tendon area 2 (Wilcoxon's test; p = 0.47). Overall, the agreement between grayscale and color Doppler (CD) US and MRI tenosynovitis visualization and scoring was good, but not between CD and BFI. US and MRI have high agreement using image fusion for the assessment of tenosynovitis when partial volume artifacts are taken into account. BFI is not an alternative to CD for the measurement of slow flow in tenosynovitis.
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| http://dx.doi.org/10.1055/s-0043-101228 | DOI Listing |
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