From Scan to Report: 4D Flow and Quantitative Perfusioin in cvi42 6.5 - Educational Grant from Circle-Circle Presents: From Scan to Report: 4D Flow and Quantitative Perfusioin in cvi42 6.5

Circle Presents: From Scan to Report: 4D Flow and Quantitative Perfusioin in cvi42 6.5

Video Transcription

Video Summary

The session introduced cardiac MRI tools aimed at making complex post-processing faster and easier, focusing on 4D flow and quantitative perfusion. Dr. Francois demonstrated how 4D flow MRI can be quickly acquired, visualized, and analyzed using Circle’s CVI42 platform. He showed multiple visualization modes, including velocity MIPs, vectors, and pathlines, and used a repaired tetralogy of Fallot case to illustrate severe aortic and pulmonary regurgitation. He emphasized automated preprocessing, improved segmentation, on-screen results, and direct reporting.<br /><br />Kevin Steele then explained quantitative perfusion MRI, describing how it differs from visual and semi-quantitative stress perfusion. He outlined the key components: patient prep, vasodilator stress, contrast injection, and the perfusion sequence. He reviewed arterial input function analysis, dual bolus vs dual sequence methods, and the main metrics: myocardial blood flow, myocardial perfusion reserve, and relative perfusion reserve. A live case showed normal perfusion and another suggested microvascular dysfunction despite otherwise acceptable blood pool curves.<br /><br />The session closed with audience Q&A on topics such as CABG patients, atrial fibrillation, 4D vs 2D flow accuracy, and reporting options, reinforcing the clinical utility of these advanced MRI tools.

Keywords

cardiac MRI

4D flow MRI

quantitative perfusion

CVI42 platform

velocity MIPs

pathlines

tetralogy of Fallot

myocardial blood flow

microvascular dysfunction