Anatomy | Study | Title | Subjects | Findings |
---|---|---|---|---|
Heart | Kim et al. * J Am Coll Cardiol 1995 [81] | Left ventricular blood flow patterns in normal subjects: a quantitative analysis by three-dimensional magnetic resonance velocity mapping | n = 26 | Diastolic vortex formation in the left ventricle, in close temporal relation to the motion of the anterior mitral leaflet |
 | Kilner PJ et al. * Nature 2000 [79] | Asymmetric redirection of flow through the heart. | n = 22 | Asymmetric redirection of streaming blood in atrial and ventricular cavities of the adult human heart |
 | Fyrenius A et al. Heart 2001 [56] | Three dimensional flow in the human left atrium. | n = 11 | Global left atrial flow in the normal human heart comprises consistent patterns specific to the phase of the cardiac cycle |
 | Kozerke et al. J Magn Reson Imaging 2001 [23] | Visualization of Flow Patterns Distal to Aortic Valve Prostheses in Humans Using a Fast Approach for Cine 3D Velocity Mapping | n = 6 | Distinct flow patterns reflecting aortic valve design were observed close to the valve. Further downstream, flow patterns varied considerably indicating the impact of varying aortic anatomy |
 | Bolger AF et al. J Cardiovasc Magn Reson 2007 [75] | Transit of blood flow through the human left ventricle mapped by cardiovascular magnetic resonance. | n = 18 | Paths, compartmentalization and kinetic energy changes of blood flowing into the LV. |
 | Roes et al. Invest Radiol 2009 [91] | Flow assessment through four heart valves simultaneously using 3-dimensional 3-directional velocity-encoded magnetic resonance imaging with retrospective valve tracking in healthy volunteers and patients with valvular regurgitation | n = 29 | Net flow volumes through the 4 heart valves were compared in 22 healthy volunteers and in 29 patients with ischemic cardiomyopathy who were suspected of valvular regurgitation. |
 | Eriksson et al. J Cardiovasc Magn Reson 2010 [43] | Semi-automatic quantification of 4D left ventricular blood flow | n = 9 | Semi-automatic payhline analysis for the quantification of 4D blood flow resulted in accurate LV inflow and outflow volumes and high reproducibility |
Large vessels | Kilner PJ et al. * Circulation 1993 [55] | Helical and retrograde secondary flow patterns in the aortic arch studied by three-directional MR velocity mapping. | n = 10 | Helical and retrograde streams are consistent features of intra-aortic flow in healthy subjects |
 | Bogren HG et al. ** J Thorac Cardiovasc Surg 1995 [110] | Magnetic resonance velocity vector mapping of blood flow in thoracic aortic aneurysms and grafts. | n = 13 | Altered flow patterns were found to be associated with altered vessel geometry |
 | Bogren HG et al. ** J Magn Reson Imaging 1997 [111] | Blood flow patterns in the thoracic aorta studied with three-directional MR velocity mapping: the effects of age and coronary artery disease. | n = 28 | Significantly different flow characteristics in normal subjects compared with patients and during ageing |
 | Kvitting et al. J Thorac Cardiovasc Surg 2004 [86] | Flow patterns in the aortic root and the aorta studied with time-resolved, 3-dimensional, phase-contrast magnetic resonance imaging: Implications for aortic valve-sparing surgery | n = 8 | Patients with Marfan syndrome 6 months after aortic valve-sparing surgery with straight Dacron grafts and normal volunteers |
 | Bogren HG et. Al ** J Magn Reson Imaging 2004[112] | 4D MR velocity mapping of blood flow patterns in the aorta in patients with atherosclerotic coronary artery disease compared to age-matched normal subjects. | n = 41 | Increased retrograde velocity in patients with atherosclerosis compared to normal subjects. The aging process has a similar effect on blood flow patterns as atherosclerosis. |
 | Markl M et al. J Thorac Cardiovasc Surg 2005 [85] | Time-resolved three-dimensional magnetic resonance velocity mapping of aortic flow in healthy volunteers and patients after valve-sparing aortic root replacement. | n = 22 | Altered aortic flow dynamics in patients undergoing various types of valve-sparing aortic root replacement. |
 | Reiter G, et al Circ Cardiovasc Imaging 2008 [88] | MR-derived 3D blood flow patterns in the main pulmonary artery as a marker of pulmonary hypertension and a measure of elevated mean pulmonary arterial pressure. | n = 48 | Vortices of blood flow in the main pulmonary artery enable the identification of manifest pulmonary hypertension. Elevated mean pulmonary arterial pressures is related to vortex duration |
 | Frydrychowicz A, et al. J Magn Reson Imaging 2009 [89] | Three-dimensional analysis of segmental wall shear stress in the aorta by flow-sensitive four-dimensional-MRI. | n = 31 | Normal distribution of vectorial WSS and OSI in the entire thoracic aorta derived from flow-sensitive 4D-MRI data |
 | Harloff A et al. Magn Reson Med 2010 [96] | In vivo assessment of wall shear stress in the atherosclerotic aorta using flow-sensitive 4D MRI. | n = 93 | Predictive value of WSS for plaque existence depends on the aortic segment. Locations of critical wall parameters move to neighboring segments of regions affected by atherosclerosis |
 | Hope MD et al. Radiology 2010 [58] | Bicuspid aortic valve: four-dimensional MR evaluation of ascending aortic systolic flow patterns. | n = 53 | Abnormal helical systolic flow in the ascending aorta of patients with a bicuspid aortic valve. |
 | Markl M et al. Magn Reson Med 2010 [68] | Estimation of global aortic pulse wave velocity by flow-sensitive 4D MRI. | n = 46 | Pulse wave velocity based on four-dimensional MRI data was higher in patients with atherosclerosis compared to age-matched controls and younger volunteers |
 | Hope MD et al. J Magn Reson Imaging 2010 [44] | Clinical evaluation of aortic coarctation with 4D flow MR imaging. | n = 34 | Hemodynamic significance was established by evaluating collateral blood flow. Distorted blood flow patterns in the descending aorta were detected after coarctation repair |
 | Harloff A et al. Stroke; 2010 [93] | Complex plaques in the proximal descending aorta: an underestimated embolic source of stroke. | n = 94 | Retrograde flow from complex plaques in the descending aorta can explain embolism to all brain territories as a new source of stroke. |