Hi,
I'm working on organ motion modeling specifically for radiation therapy. We do 4D MR acquisition to extract the characteristics of a subject respiratory motion, which is essential for planning of the therapy.
I'm wondering if the intra-subject variability of the respiratory or cardiac motion is also important for some sort of diagnosis. To the best of my knowledge, current dynamic CT or dynamic MR based methods only reconstruct single average motion cycles.
As I'm not a clinician this question might sound quite naive. However, I'm happy for any hints and answers.
Best
Christoph
Distinction between ratio of abdominal versus chest effort in breathing contains generally useful info.
Given the field of work you describe maybe take a look at the MRI guided Linac work ongoing in UMC Utrecht as well.
The heart rate variability changes when the health condition changes,
after exercise, fatigue and others.
Thank's for your answers Fokko and Galya. As I understand you correctly, for your mentioned applications an average cycle or even for looking only onto the heart rate a simple ECG would be enough. I still wonder, if real time resolved 3D images over several respiratory or cardiac cycles are relevant for diagnosis. Or would that open new diagnostic opportunities?
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