Cardiac MRI

Cardiac Anatomy http://www.scmr.org/education/atlas/intro/cardiac.htm

Cine http://www.mr-tip.com/serv1.php?type=img&img=Infarct%204%20Chamber%20Cine http://www.bocaradiology.com/Procedures/cardiac/cardiac_mri.htm

Tagging http://radiographics.rsnajnls.org/cgi/content/full/21/4/1047 http://iacl.ece.jhu.edu/projects/harp/

Tagged Cine http://www.cmu.edu/nmr-center/technological2.html Talk about stress testing

Perfusion w/ Gadolinium http://radiographics.rsnajnls.org/cgi/content/full/21/4/1047

Tags and Perfusion Figure 11a.   (a) First-pass (top row) and delayed (bottom row) images through four imaging planes of the ventricle, obtained in a patient 5 days after a documented inferior wall myocardial infarction. A region of hypoenhancement is seen on the first-pass images (arrows), and a larger area of hyperenhancement is evident on the delayed images (arrows). (b) Images from a cine tagging study of the same patient in a midventricular imaging plane. A wall motion abnormality (arrows) is seen in the same region as the perfusion abnormality in a. The tag pattern in this area shows poor contractile function. (Reprinted, with permission, from reference 33.)

MIP- Coronary Arteries Figure 14.   Maximum-intensity projection images of an ex vivo human heart after injection of gadopentetate dimeglumine into the coronary vasculature, viewed from above (left) and the side (middle and right). The heart was imaged with a high-resolution 3D spoiled GRE sequence at 1.5 T. (Courtesy of Guy Shechter, BS, Johns Hopkins University, Baltimore, Md.)

Coronary Artery Imaging Figure 16b.   Spiral coronary angiograms of the left anterior descending artery (LAD) and several of its diagonals (a) and the right coronary artery (RCA) (b). (Courtesy of Craig Meyer, PhD.)

More Angiograms Figure 17a.   Three-dimensional reformatted images of the right and left coronary arteries in a healthy volunteer. The in-plane resolution is 0.7 x 1 mm. (a) Image shows the left circumflex artery (LCx), left main coronary artery (LM), right coronary artery (RCA), acute marginal artery into the right ventricle (RV), and sinus node (SN). (b) Image shows the aorta (Ao), first diagonal (D1), left anterior descending artery (LAD), left circumflex artery (LCx), left main coronary artery (LM), and right ventricular outflow tract (RVOT). (Courtesy of Matthias Stuber, PhD, Beth Israel Deaconess Medical Center, Boston, Mass; adapted and reprinted, with permission, from reference 65.)

RCA: MR and Conventional Figure 18b.   MR (a) and corresponding conventional (b) angiograms of the right coronary artery in a patient with known right coronary artery disease. Three stenotic areas are identified on both images (arrows). (Courtesy of Matthias Stuber, PhD; adapted and reprinted, with permission, from reference 65.)

Catheter Coil Figure 19a.   (a) Catheter coil image of an ex vivo human aorta with an atherosclerotic plaque (arrow). The intraluminal black spot in the aorta is the coil. (b) Photomicrograph of a histologic section of the plaque. (Courtesy of Ergin Atalar, PhD, Johns Hopkins University, Baltimore, Md.)

Fast Spin-Echo Figure 21.   T2-weighted fast spin-echo images obtained in a patient with a documented acute anteroseptal myocardial infarction show brightening in the anteroseptal region (arrow). The images were acquired with an echo time of 40 msec, an echo train length of 24, and a 256 x 256 matrix. Each imaging plane required a 20-heartbeat breath hold.

Advanced Cardiac MR Imaging of Ischemic Heart Disease1 Scott B. Reeder, MD, PhD, Yiping P. Du, PhD, Joao A. C. Lima, MD and David A. Bluemke, MD, PhD Radiographics. 2001;21:1047-1074

Phase-Contrast MR phase contrast velocity mapping             Stroke volume http://www.kuleuven.ac.be/radiology/Research/Cardiac/Cardiac_Main.html Click on this!