تقرير
Radon-based Image Reconstruction for MPI using a continuously rotating FFL
| العنوان: | Radon-based Image Reconstruction for MPI using a continuously rotating FFL |
|---|---|
| المؤلفون: | Blanke, Stephanie, Brandt, Christina |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Electrical Engineering and Systems Science - Image and Video Processing |
| الوصف: | Magnetic particle imaging is a relatively new tracer-based medical imaging technique exploiting the non-linear magnetization response of magnetic nanoparticles to changing magnetic fields. If the data are generated by using a field-free line, the sampling geometry resembles the one in computerized tomography. Indeed, for an ideal field-free line rotating only in between measurements it was shown that the signal equation can be written as a convolution with the Radon transform of the particle concentration. In this work, we regard a continuously rotating field-free line and extend the forward operator accordingly. We obtain a similar result for the relation to the Radon data but with two additive terms resulting from the additional time-dependencies in the forward model. We jointly reconstruct particle concentration and corresponding Radon data by means of total variation regularization yielding promising results for synthetic data. Comment: YRM & CSE Workshop on Modeling, Simulation & Optimization of Fluid Dynamic Applications 2022 |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2211.11683 |
| رقم الأكسشن: | edsarx.2211.11683 |
| قاعدة البيانات: | arXiv |
كن أول من يترك تعليقا!