Idiopathic dilatation of the right atrium.

dimensional gadolinium-enhanced MR venography technique for imaging central veins. Am J Roetgenol 1999;173:999–1003. 28. Lebowitz JA, Rofsky NM, Krinsky GA, Weinreb JC. Gadolinium-enhanced body MR venography with subtraction technique Am J Roentgenol 1997;169:755–8. 29. Greil GF, Powell AJ, Gildein HP, Geva T. Gadolinium-enhances three-dimensional magnetic resonance angiography of pulmonary and systemic venous anomalies. JACC 2002;2:335–41. 30. Meaney J, Ridgway J, Radjenovic A, Hoegeveen R, Roberts J, Dambitis D et al. MR Venography of the central veins: comparison of direct contrast-enhanced 2D MR fluoroscopic venography with 3D MRV. Proc Intl Soc Mag reson Med 2001;9:1945. 31. Prasad SK, Soukias N, Hornung T, Khan M, Pennell DJ et al.. Role of cardiac magnetic resonance angiography in the diagnosis of major aortopulmonary collateral arteries and partial anomalous pulmonary venous drainage. Circulation 2004;109: 207. 32. Hundley WG, Li HF, Lange RA, Pfeifer DP, Meshack BM, Willard JE et al. Assessment of left-to-right intracardiac shunting by velocity-encoded, phase-difference magnetic resonance imaging: a comparison with oximetric and indicator dilution techniques. Circulation 1995;91:2955–60. 33. Beygui F, Furber A, Delepine S, Helft G, Metzger J, Geslin P et al. Routine breathhold gradient echo MRI-derived right ventricular mass, volumes and function: accuracy, reproducibility and coherence study. Int J Cardiovasc Imaging 2004;20:509–16.