MR imaging of coarctation of the aorta and its postoperative complications in adults: assessment with spin-echo and cine-MR imaging

Riquelme, Carlos; Laissy, Jean-Pierre; Menegazzo, David; Debray, Marie‐Pierre; Cinqualbre, Anne; Langlois, J; Schouman-Claeys, É.

doi:10.1016/s0730-725x(98)00145-3

Cited by 38 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A practical advantage of these findings is that both 3D MRA of the thoracic aorta and PVC-MRI flow analysis are established MRI techniques, are commonly used in clinical practice, and require relatively short acquisition and imageprocessing times. 9,[13][14][15][16][23][24][25][26] Moreover, both techniques have been evaluated in patients with CoA and were found to reliably assess aortic morphology and collateral vessels and to accurately quantify flow in the descending aorta. 9,13 Assessment of coarctation severity presents a clinical challenge.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies found good correlations between coarctation diameter by MRI and x-ray angiography. 10,14,15 For example, Riquelme and colleagues 14 showed a correlation coefficient of 0.99 between gradient echo cine MRI and angiography, whereas Simpson et al 15 and Mendelsohn et al 10 reported correlation coefficients of 0.9 and 0.91, respectively. Other groups have focused on the percent increase in descending aorta flow from collateral vessels to assess coarctation severity.…”

Section: Discussionmentioning

confidence: 99%

“…12 Cardiac magnetic resonance imaging (CMRI) provides an accurate assessment of the anatomic characteristics of CoA and collateral blood vessels. 5,[13][14][15] Prior investigations on CMRI assessment of CoA severity compared the anatomic features and the extent of collateral blood flow with coarctation diameter measured by x-ray angiography, 10,15 blood pressure measurements by sphygmomanometry, 9 and Doppler assessment of flow velocity. 16 The ability of CMRI to predict the hemodynamic severity of CoA as measured by cardiac catheterization remains unclear.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Magnetic Resonance Imaging Predictors of Coarctation Severity

et al. 2005

View full text Add to dashboard Cite

Background-MRI is increasingly used for anatomic assessment of aortic coarctation (CoA), but its ability to predict the transcatheter pressure gradient, considered the reference standard for hemodynamic severity, has not been studied in detail. This study evaluated the ability of MRI to distinguish between mild versus moderate and severe CoA as determined by cardiac catheterization. Methods and Results-The clinical, MRI, and catheterization data of 31 subjects referred for assessment of native or recurrent CoA were reviewed retrospectively. Patients were divided into 2 groups on the basis of peak coarctation gradient by catheterization: Ͻ20 mm Hg (nϭ12) and Ն20 mm Hg (nϭ19). Patients with cardiac index Ͻ2.2 L · min

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Magnetic Resonance Imaging Predictors of Coarctation Severity

et al. 2005

View full text Add to dashboard Cite

show abstract

“…[15][16][17][18] The advent of fast imaging techniques, such as interactive realtime MRI (irMRI), makes this method attractive for the guidance of endovascular interventional procedures. irMRI enables continuous visualization of anatomy with good soft tissue contrast and various contrast characteristics.…”

Section: Editorial P 1051 Clinical Perspective P 1100mentioning

confidence: 99%

Magnetic Resonance Imaging–Guided Balloon Angioplasty of Coarctation of the Aorta

et al. 2006

View full text Add to dashboard Cite

Background-MRI guidance of percutaneous transluminal balloon angioplasty (PTA) of aortic coarctation (CoA) would be desirable for continuous visualization of anatomy and to eliminate x-ray exposure. The aim of this study was (1) to determine the suitability of MRI-controlled PTA using the iron oxide-based contrast medium Resovist (ferucarbotran) for catheter visualization and (2) to subsequently apply this technique in a pilot study with patients with CoA. Methods and Results-The MRI contrast-to-noise ratio and artifact behavior of Resovist-treated balloon catheters was optimized in in vitro and animal experiments (pigs). In 5 patients, anatomy of the CoA was evaluated before and after intervention with high-resolution respiratory-navigated 3D MRI and multiphase cine MRI. Position monitoring of Resovist-treated catheters was realized with interactive real-time MRI. Aortic pressures were continuously recorded.Conventional catheterization was performed before and after MRI to confirm interventional success. During MRI, catheters filled with 25 mol of iron particles per milliliter of Resovist produced good signal contrast between catheters and their background anatomy but no image distortion due to susceptibility artifacts. All MRI procedures were performed successfully in the patient study. There was excellent agreement between the diameters of CoA and pressure gradients as measured during MRI and conventional catheterization. In 4 patients, PTA resulted in substantial widening of the CoA and a decrease in pressure gradients. In 1 patient, PTA was ineffective. Conclusions-The MRI method described represents a potential alternative to conventional x-ray fluoroscopy for catheter-based treatment of patients with CoA. (Circulation. 2006;113:1093-1100.)

show abstract

“…Conventional MRI often already provides essential information [2,6,7,15,33,83,91,101,110,119]. Useful diagnosis and followup of coarctation with MRI does not necessarily require the combination of a high-field machine and the latest pulse sequences, but the estimation of the severity of the stenosis from the size of the signal void on GRE images appears hazardous [103]. With Gd-enhanced MRA, the aortic arch is encompassed in a volume that can be viewed from any angle, showing the vascular morphology with great detail, especially after MIP reconstruction (Figures 14a and 14b).…”

Section: Coarctation Of the Aortic Arch And Brachiocephalic Anomaliesmentioning

confidence: 99%

Congenital Heart Disease. Evaluation of Anatomy and Function by MRI

Rebergen¹,

Roos

2000

Herz

View full text Add to dashboard Cite

With the increasing number of patients surviving after therapeutic intervention for congenital heart disease (CHD), accurate and frequent follow-up of their morphologic and functional cardiovascular status is required, preferably with a noninvasive imaging technique. Echocardiography, either transthoracic or transesophageal, has been the first choice for this purpose, and will probably keep that status, at least in a large segment of the CHD spectrum. Magnetic resonance imaging (MRI) is an established method for high-resolution visualization of cardiovascular morphology. In the past decade, newer MRI techniques have been developed that allow functional evaluation of CHD patients. Particularly the introduction of breath-hold imaging, contrast-enhanced MRA and user-friendly computer software for image analysis may move functional MRI of CHD from the science laboratory to clinical use. It is already evident that MRI is superior to echocardiography in certain areas of limited echocardiographic access, such as the pulmonary artery branches and the aortic arch in adult patients. But MRI has also a unique potential for accurate volumetric analysis of ventricular function and cardiovascular blood flow, without any geometric assumptions. If supported by increased cooperation between cardiologists and radiologists, MRI will grow into a useful noninvasive imaging tool that, together with echocardiography, will obviate the need for invasive catheter studies for diagnostic purposes.

show abstract

MR imaging of coarctation of the aorta and its postoperative complications in adults: assessment with spin-echo and cine-MR imaging

Cited by 38 publications

References 16 publications

Magnetic Resonance Imaging Predictors of Coarctation Severity

Magnetic Resonance Imaging Predictors of Coarctation Severity

Magnetic Resonance Imaging–Guided Balloon Angioplasty of Coarctation of the Aorta

Congenital Heart Disease. Evaluation of Anatomy and Function by MRI

Contact Info

Product

Resources

About