OBJECTIVE: The aim of this study was to assess whether visualisation of in-stent changes can be improved with high-resolution, steady-state, blood pool contrast-enhanced MR angiography compared with first-pass MR angiography. Intra-arterial digital subtraction angiography (DSA) served as the reference standard. METHODS: Twenty patients after stent placement in the superficial femoral artery (SFA) underwent MRA prior to reintervention. MRA of the SFA includes first-pass MRA as well as 3D high-resolution MRA in the steady state (SS-MRA) after injection of Gadofosveset trisodium. Sensitivity and specificity values for the detection of significant in-stent lesions by means of SS-MRA were calculated at the proximal, middle and distal stent segments in comparison to DSA. Kappa statistics were used to determine agreement between the two techniques. RESULTS: Sensitivity and specificity values for the detection of significant stenosis with SS-MRA reached 95% in the proximal, 100% in the middle and 100% in the distal stent segment. Kappa coefficients between SS-MRA and DSA were 0.789, 0.797 and 0.859 for the proximal, middle and distal segments, whereas the Kappa coefficients for FP-MRA were 0,211, 0,200 and 0,594 in these segments, respectively. CONCLUSION: Detection of in stent stenosis is significantly improved using SS MRA, in comparison to state-of-the-art FP-MRA.
OBJECTIVE: The aim of this study was to assess whether visualisation of in-stent changes can be improved with high-resolution, steady-state, blood pool contrast-enhanced MR angiography compared with first-pass MR angiography. Intra-arterial digital subtraction angiography (DSA) served as the reference standard. METHODS: Twenty patients after stent placement in the superficial femoral artery (SFA) underwent MRA prior to reintervention. MRA of the SFA includes first-pass MRA as well as 3D high-resolution MRA in the steady state (SS-MRA) after injection of Gadofosveset trisodium. Sensitivity and specificity values for the detection of significant in-stent lesions by means of SS-MRA were calculated at the proximal, middle and distal stent segments in comparison to DSA. Kappa statistics were used to determine agreement between the two techniques. RESULTS: Sensitivity and specificity values for the detection of significant stenosis with SS-MRA reached 95% in the proximal, 100% in the middle and 100% in the distal stent segment. Kappa coefficients between SS-MRA and DSA were 0.789, 0.797 and 0.859 for the proximal, middle and distal segments, whereas the Kappa coefficients for FP-MRA were 0,211, 0,200 and 0,594 in these segments, respectively. CONCLUSION: Detection of in stent stenosis is significantly improved using SS MRA, in comparison to state-of-the-art FP-MRA.
Authors: Florian Wolf; Gudrun M Feuchtner; Peter Homolka; Herbert Langenberger; Alfred Stadler; Till R Bader; Michael Weber; Johannes Lammer; Christian Loewe Journal: Eur J Radiol Date: 2007-10-29 Impact factor: 3.528
Authors: Alan T Hirsch; Timothy P Murphy; Marge B Lovell; Gwen Twillman; Diane Treat-Jacobson; Eileen M Harwood; Emile R Mohler; Mark A Creager; Robert W Hobson; Rose Marie Robertson; W James Howard; Paul Schroeder; Michael H Criqui Journal: Circulation Date: 2007-09-17 Impact factor: 29.690
Authors: A T Hirsch; M H Criqui; D Treat-Jacobson; J G Regensteiner; M A Creager; J W Olin; S H Krook; D B Hunninghake; A J Comerota; M E Walsh; M M McDermott; W R Hiatt Journal: JAMA Date: 2001-09-19 Impact factor: 56.272
Authors: Martin Schillinger; Schila Sabeti; Christian Loewe; Petra Dick; Jasmin Amighi; Wolfgang Mlekusch; Oliver Schlager; Manfred Cejna; Johannes Lammer; Erich Minar Journal: N Engl J Med Date: 2006-05-04 Impact factor: 91.245
Authors: R Syha; D Ketelsen; M Kaempf; S Mangold; S Sixt; T Zeller; F Springer; F Schick; C D Claussen; K Brechtel Journal: Eur Radiol Date: 2012-08-17 Impact factor: 5.315