Myocardial MR Perfusion - Pattern Recognition

Keywords: Myocardial Perfusion, Artifacts, Perfusion Defects.

Pressure Gradient Measurement in CMR

Source:

Tanaka et al. Correlation of Aortic Valve Area Obtained by the Velocity-Encoded Phase Contrast Continuity Method to Direct Planimetry using Cardiovascular Magnetic Resonance. J. of Cardiovascular Magnetic Resonance (2007) vol. 9 (5) pp. 799-805

Keywords: Continuity Equation, Modified Bernoulli Equation, Peak Velocity, CMR

CMR Imaging of Aortic Valve

Keywords: Continuity Equation, Modified Bernoulli Equation, Peak Velocity, CMR

Flow Measurement in Main Pulmonary Artery

Read here for alternate way of planning for RVOT.

Keywords: Free Breathing, Long Term Averaging, Retrospective Gating

T2* Measurement of Myocardial Iron in Thalassemia (Part I)

If you need further details on getting the exponential trendline, feel free to let me know.

You may refer to Part II of this post for the derivation of T2* values.

References:

Leung et al. Magnetic resonance imaging assessment of cardiac and liver iron load in transfusion dependent patients. Pediatr. Blood Cancer (2009) vol. 53 (6) pp. 1054-1059

Westwood et al. Intercentre Reproducibility of Magnetic Resonance T2* Measurements of Myocardial Iron in Thalassaemia. The international journal of cardiovascular imaging (2005) vol. 21 (5) pp. 531-538

Westwood et al. A single breath-hold multiecho T2* cardiovascular magnetic resonance technique for diagnosis of myocardial iron overload. J. Magn. Reson. Imaging (2003) vol. 18 (1) pp. 33-9

Westwood et al. Interscanner reproducibility of cardiovascular magnetic resonance T2* measurements of tissue iron in thalassemia. J. Magn. Reson. Imaging (2003) vol. 18 (5) pp. 616-620

Anderson. Cardiovascular T2-star (T2*) magnetic resonance for the early diagnosis of myocardial iron overload. European Heart Journal (2001) vol. 22 (23) pp. 2171-2179

MRI Safety Alerts

• Site brought patient into scan room on a ferromagnetic gurney. The patient was thrown into the magnet with the gurney
• Flying scissors
• Ferromagnetic rolling cart crashes, pins, seriously injures Apps. Specialist (facial fractures / brain trauma)
• Ferromagnetic flat-screen monitor strikes subject in face (facial fractures / surgery)
• 5 MRI "Never Events"
• Thermoflect blanket
• Ferromagnetic Sandbags

Contrast-enhanced FLAIR for Infectious Leptomeningitis

If you're interested in knowing more about the T1 contrast characteristics of the long-TE FLAIR, leave me a note and I'll try to explain.

Reference:

Parmar et al. Contrast-enhanced flair imaging in the evaluation of infectious leptomeningeal diseases. European journal of radiology (2006) vol. 58 (1) pp. 89-95

Navigator-gated T2W Abdomen

Reference:

Klessen et al. Magnetic resonance imaging of the upper abdomen using a free-breathing T2-weighted turbo spin echo sequence with navigator triggered prospective acquisition correction. J. Magn. Reson. Imaging (2005) vol. 21 (5) pp. 576-82

Interesting MRI Brain Localization

Click here to learn more.

Acute Myocardial Infarction (AMI)

Orientation Distribution of Spins

Detailed CMR Anatomy

Transverse Views

Legends

Coronal Views

Sagittal Views

Short Axis Views

Horizontal Long Axis Views

Vertical Long Axis Views

Left Ventricular Outflow Tract Views

Right Ventricular Outflow Tract Views

Source:

Bogaert J, Dymarkowski S, Tayor AM. Cardiac Anatomy. In: Clinical Cardiac MRI. Springer: Berlin Heidelberg, 2005; 61-83.

Phase Sensitive Inversion Recovery

Keywords: Phase sensitive image reconstruction, IR TurboFLASH, 2D Single-shot IR TrueFISP, 3D navigator-gated IR TurboFLASH

Brain MRI - Neonates

Keywords: Neonates, Brain, Gray Matter, White Matter

Source:

Jones RA., Palasis S., Grattan-Smith JD. MRI of the Neonatal Brain: Optimization of Spin-Echo Parameters. AJR 2004:182 367-372