Table 1 Image quality scoring system
Score | Visualization of cardiac structures | Blood pool and balloon contrast | Suitability for iCMR guidance |
|---|---|---|---|
1—Poor | Unable to differentiate cardiovascular structures | Impossible to differentiate balloon and blood pool | Insufficient visualization of the balloon or cardiovascular structures to carry out the procedure |
2—Low | Cardiovascular structures can be slightly intuited | Differentiation of blood and balloon difficult to perform | Challenging to navigate catheter due to insufficient image quality |
3—Intermediate | Cardiovascular structures can be delineated | Adequate signal disparity | Sufficient visualization |
4—Good | Good definition of cardiovascular structures | Differentiation of blood and balloon easily performed | Catheter easily navigated throughout procedure |
5—Excellent | Optimal cardiovascular structure delineation | Excellent contrast between blood and balloon | High confidence in catheters location |