TY - JOUR
T1 - Myocardial Oxygenation Imaging
T2 - New Methods for Ischemia Detection
AU - Zheng, Jie
N1 - Funding Information:
Acknowledgments This research was supported in part by National Institute of Health grant 1R01 HL74019. The author thanks the valuable input from Dr. Linda Peterson and consultation from Dr. Robert J. Gropler. The author also appreciates the careful editing of the manuscript by David Muccigrosso.
PY - 2011/4
Y1 - 2011/4
N2 - Myocardial ischemia is associated with many cardiovascular diseases, including coronary artery disease, congestive heart failure, hypertensive left ventricular hypertrophy, and diabetic cardiomyopathy, etc. The ischemia is caused by the imbalance of myocardial oxygen supply and demand. Positron emission tomography (PET) is the only noninvasive imaging technique to directly measure myocardial oxygenation. However, its low spatial resolution, limited availability, and ionizing radiation discourage the widespread use of PET to detect myocardial ischemia in clinical practice. The cardiac BOLD (blood-oxygen-level dependence) effect allows the measurement of myocardial oxygenation through T2 or T2* change using cardiac magnetic resonance (CMR) imaging techniques. Many efforts were made to improve the sensitivity of detecting this change and image quality for clinical evaluations. With relatively high spatial resolution, oxygenation in the subendocardium, a common location for myocardial ischemia, for the first time could be directly assessed by CMR oxygenation imaging. This method, combined with other CMR functional and anatomic imaging, will offer a one-stop shop for the detection of myocardial ischemia, even in the absence of angiographically significant coronary artery stenosis.
AB - Myocardial ischemia is associated with many cardiovascular diseases, including coronary artery disease, congestive heart failure, hypertensive left ventricular hypertrophy, and diabetic cardiomyopathy, etc. The ischemia is caused by the imbalance of myocardial oxygen supply and demand. Positron emission tomography (PET) is the only noninvasive imaging technique to directly measure myocardial oxygenation. However, its low spatial resolution, limited availability, and ionizing radiation discourage the widespread use of PET to detect myocardial ischemia in clinical practice. The cardiac BOLD (blood-oxygen-level dependence) effect allows the measurement of myocardial oxygenation through T2 or T2* change using cardiac magnetic resonance (CMR) imaging techniques. Many efforts were made to improve the sensitivity of detecting this change and image quality for clinical evaluations. With relatively high spatial resolution, oxygenation in the subendocardium, a common location for myocardial ischemia, for the first time could be directly assessed by CMR oxygenation imaging. This method, combined with other CMR functional and anatomic imaging, will offer a one-stop shop for the detection of myocardial ischemia, even in the absence of angiographically significant coronary artery stenosis.
KW - BOLD
KW - CMR
KW - Myocardium
KW - Oxygenation
UR - http://www.scopus.com/inward/record.url?scp=84873047808&partnerID=8YFLogxK
U2 - 10.1007/s12410-010-9063-3
DO - 10.1007/s12410-010-9063-3
M3 - Review article
AN - SCOPUS:84873047808
SN - 1941-9066
VL - 4
SP - 159
EP - 164
JO - Current Cardiovascular Imaging Reports
JF - Current Cardiovascular Imaging Reports
IS - 2
ER -