Summary
It must be remembered that 3-D MRA techniques for the assessment of coronary arteries are still evolving and much can be done in the way of improving them. To obtain adequate sensitivity for detection of coronary artery stenoses, in-plane resolution will need to be increased, and the window of acquisition could be decreased to avoid image blur. As described earlier, improved spatial resolution could be facilitated by intravascular contrast agents that would increase SNR.
Methods of increasing efficiency might include a software package that could allow for faster and more automated processing of projection images, or workstations that could provide applications of volume rendering. Permitting radiologists actively to assess the data sets with MPR at the system console is another factor that may decrease the number of false positives and may possibly increase sensitivity.
Whereas screening for coronary artery stenoses is the ultimate goal, 3-D techniques are already suitable for use in the assessment of anomalous coronaries and are especially suited to young children (17,18). Other clinical uses for coronary artery MRA that have been explored and are currently under investigation include assessment of stenoses postangioplasty and assessment of coronary graft patency after bypass (19,20). Several additional technical and clinical advances using 3-D navigator techniques and autocorrelation techniques have been described (21–26).
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Woodard, P.K., Li, D. (2002). 3-D Free-Breathing (Navigator) Coronary MRA: How Do I Do It?. In: Duerinckx, A.J. (eds) Coronary Magnetic Resonance Angiography. Springer, New York, NY. https://doi.org/10.1007/0-387-21590-5_6
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DOI: https://doi.org/10.1007/0-387-21590-5_6
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