Assessment of pulmonary venous stenosis after radiofrequency catheter ablation for atrial fibrillation by magnetic resonance angiography: A comparison of linear and cross-sectional area measurements
Jazyk angličtina Země Německo Médium print-electronic
Typ dokumentu srovnávací studie, časopisecké články, práce podpořená grantem
- MeSH
- dospělí MeSH
- fantomy radiodiagnostické MeSH
- fibrilace síní chirurgie MeSH
- katetrizační ablace škodlivé účinky MeSH
- kontrastní látky MeSH
- lidé středního věku MeSH
- lidé MeSH
- magnetická rezonanční angiografie metody MeSH
- meglumin analogy a deriváty MeSH
- organokovové sloučeniny MeSH
- počítačové zpracování obrazu MeSH
- reprodukovatelnost výsledků MeSH
- senioři MeSH
- stenóza pulmonální chlopně diagnóza etiologie MeSH
- studie případů a kontrol MeSH
- venae pulmonales * MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- srovnávací studie MeSH
- Názvy látek
- gadobenic acid MeSH Prohlížeč
- kontrastní látky MeSH
- meglumin MeSH
- organokovové sloučeniny MeSH
One of the recognised complications of catheter ablation is pulmonary venous stenosis. The aim of this study was to compare two methods of evaluation of pulmonary venous diameter for follow-up assessment of the above complication: (1) a linear approach evaluating two main diameters of the vein, (2) semiautomatically measured cross-sectional area (CSA). The study population consists of 29 patients. All subjects underwent contrast-enhanced magnetic resonance angiography (CeMRA) of the pulmonary veins (PVs) before and after the ablation; 14 patients were also scanned 3 months later. PV diameter was evaluated from two-dimensional multiplanar reconstructions by measuring either the linear diameter or CSA. A comparison between pulmonary venous CSA and linear measurements revealed a systematic difference in absolute values. This difference was not significant when comparing the relative change CSA and quadratic approximation using linear extents (linear approach). However, a trend towards over-estimation of calibre reduction was documented for the linear approach. Using CSA assessment, significant PV stenosis was found in ten PVs (8%) shortly after ablation. Less significant PV stenosis, ranging from 20 to 50% was documented in other 18 PVs (15%). CeMRA with CSA assessment of the PVs is suitable method for evaluation of PV diameters.
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