Posted by: Johnson Francis on: 12 Mar, 2010
Blood-oxygen-level dependent (BOLD) magnetic resonance imaging (MRI) is technique useful in detecting myocardial ischemia. Oxyhaemoglobin and deoxyhaemoglobin differ in their magnetic properties – the former in diamagnetic while the latter is paramagnetic. This difference in magnetic properties can be used as an endogenous contrast to visualize tissue oxygenation. This technique has been termed BOLD MRI. [...]
Posted by: Johnson Francis on: 16 Jul, 2009
Advantages of MRI in congenital heart disease imaging
No ionizing radiation
3D anatomy can be visualised
Blood flow analysis is possible - black blood and white blood imaging > flowing blood is seen as white in white blood imaging.
Indications for cardiac magnetic resonance (CMR) imaging in CHD
Repaired tetralogy of Fallot – Right ventricular outflow tract aneurysm has to be looked fo in cases [...]
Posted by: Johnson Francis on: 07 May, 2009
Coronary stents can get heated up during magnetic resonance imaging (MRI). Hence MRI is better avoided within the first month after bare metal stent and three months of drug eluting stent implantation. This is the usual time period for endothelisation of these stents.
Posted by: Johnson Francis on: 13 Apr, 2009
Most accurate and reproducible technique for imaging the heart
Outstanding image resolution and intrinsic tissue contrast
Safe, non-invasive and does not expose the subject to ionizing radiation
White blood and dark blood imaging in CMR:
For functional imaging white blood imaging is used while dark blood imaging is used for morphological evaluation.
Delayed enhancement with gadolinium:
Delayed enhancement is seen in [...]
