Current Publications

Journal Publications
since 2022

Recent Journal Publications

[146886]
Title: Bias-reduction for sparsity promoting regularization in Magnetic Particle Imaging.
Written by: L. Nawwas, M. Möddel, T. Knopp, and C. Brandt
in: <em>International Journal on Magnetic Particle Imaging</em>. (2020).
Volume: <strong>6</strong>. Number: (2),
on pages: 1-2
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2020.2009041
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/281
ARXIVID:
PMID:

[www] [BibTex]

Note: inproceedings, artifact

Abstract: Magnetic Particle Imaging (MPI) is a tracer based medical imaging modality with great potential due to its high sensitivity, high spatial and temporal resolution, and ability to quantify the tracer concentration. Image reconstruction in MPI is an ill-posed problem that can be addressed by regularization methods that each lead to a bias. Reconstruction bias in MPI is most apparent in a mismatch between true and reconstructed tracer distribution. This is expressed globally in the spatial support of the distribution and locally in its intensity values. In this work, MPI reconstruction bias and its impact are investigated and a two-step debiasing method with significant bias reduction capabilities is introduced.

Conference Abstracts and Proceedings
since 2022

Recent Conference Abstracts and Proceedings

[146886]
Title: Bias-reduction for sparsity promoting regularization in Magnetic Particle Imaging.
Written by: L. Nawwas, M. Möddel, T. Knopp, and C. Brandt
in: <em>International Journal on Magnetic Particle Imaging</em>. (2020).
Volume: <strong>6</strong>. Number: (2),
on pages: 1-2
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2020.2009041
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/281
ARXIVID:
PMID:

[www]

Note: inproceedings, artifact

Abstract: Magnetic Particle Imaging (MPI) is a tracer based medical imaging modality with great potential due to its high sensitivity, high spatial and temporal resolution, and ability to quantify the tracer concentration. Image reconstruction in MPI is an ill-posed problem that can be addressed by regularization methods that each lead to a bias. Reconstruction bias in MPI is most apparent in a mismatch between true and reconstructed tracer distribution. This is expressed globally in the spatial support of the distribution and locally in its intensity values. In this work, MPI reconstruction bias and its impact are investigated and a two-step debiasing method with significant bias reduction capabilities is introduced.

Publications

Journal Publications
since 2014

Journal Publications

[146886]
Title: Bias-reduction for sparsity promoting regularization in Magnetic Particle Imaging.
Written by: L. Nawwas, M. Möddel, T. Knopp, and C. Brandt
in: <em>International Journal on Magnetic Particle Imaging</em>. (2020).
Volume: <strong>6</strong>. Number: (2),
on pages: 1-2
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2020.2009041
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/281
ARXIVID:
PMID:

[www] [BibTex]

Note: inproceedings, artifact

Abstract: Magnetic Particle Imaging (MPI) is a tracer based medical imaging modality with great potential due to its high sensitivity, high spatial and temporal resolution, and ability to quantify the tracer concentration. Image reconstruction in MPI is an ill-posed problem that can be addressed by regularization methods that each lead to a bias. Reconstruction bias in MPI is most apparent in a mismatch between true and reconstructed tracer distribution. This is expressed globally in the spatial support of the distribution and locally in its intensity values. In this work, MPI reconstruction bias and its impact are investigated and a two-step debiasing method with significant bias reduction capabilities is introduced.

Conference Abstracts and Proceedings
since 2014

Conference Abstracts and Proceedings

[146886]
Title: Bias-reduction for sparsity promoting regularization in Magnetic Particle Imaging.
Written by: L. Nawwas, M. Möddel, T. Knopp, and C. Brandt
in: <em>International Journal on Magnetic Particle Imaging</em>. (2020).
Volume: <strong>6</strong>. Number: (2),
on pages: 1-2
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2020.2009041
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/281
ARXIVID:
PMID:

[www]

Note: inproceedings, artifact

Abstract: Magnetic Particle Imaging (MPI) is a tracer based medical imaging modality with great potential due to its high sensitivity, high spatial and temporal resolution, and ability to quantify the tracer concentration. Image reconstruction in MPI is an ill-posed problem that can be addressed by regularization methods that each lead to a bias. Reconstruction bias in MPI is most apparent in a mismatch between true and reconstructed tracer distribution. This is expressed globally in the spatial support of the distribution and locally in its intensity values. In this work, MPI reconstruction bias and its impact are investigated and a two-step debiasing method with significant bias reduction capabilities is introduced.

Publications Pre-dating the Institute

Publications
2007-2013

Old Publications

[146886]
Title: Bias-reduction for sparsity promoting regularization in Magnetic Particle Imaging.
Written by: L. Nawwas, M. Möddel, T. Knopp, and C. Brandt
in: <em>International Journal on Magnetic Particle Imaging</em>. (2020).
Volume: <strong>6</strong>. Number: (2),
on pages: 1-2
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2020.2009041
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/281
ARXIVID:
PMID:

[www]

Note: inproceedings, artifact

Abstract: Magnetic Particle Imaging (MPI) is a tracer based medical imaging modality with great potential due to its high sensitivity, high spatial and temporal resolution, and ability to quantify the tracer concentration. Image reconstruction in MPI is an ill-posed problem that can be addressed by regularization methods that each lead to a bias. Reconstruction bias in MPI is most apparent in a mismatch between true and reconstructed tracer distribution. This is expressed globally in the spatial support of the distribution and locally in its intensity values. In this work, MPI reconstruction bias and its impact are investigated and a two-step debiasing method with significant bias reduction capabilities is introduced.

Open Access Publications

Journal Publications
since 2014

Open Access Publications

[146886]
Title: Bias-reduction for sparsity promoting regularization in Magnetic Particle Imaging.
Written by: L. Nawwas, M. Möddel, T. Knopp, and C. Brandt
in: <em>International Journal on Magnetic Particle Imaging</em>. (2020).
Volume: <strong>6</strong>. Number: (2),
on pages: 1-2
Chapter:
Editor:
Publisher:
Series:
Address:
Edition:
ISBN:
how published:
Organization:
School:
Institution:
Type:
DOI: 10.18416/IJMPI.2020.2009041
URL: https://journal.iwmpi.org/index.php/iwmpi/article/view/281
ARXIVID:
PMID:

[www] [BibTex]

Note: inproceedings, artifact

Abstract: Magnetic Particle Imaging (MPI) is a tracer based medical imaging modality with great potential due to its high sensitivity, high spatial and temporal resolution, and ability to quantify the tracer concentration. Image reconstruction in MPI is an ill-posed problem that can be addressed by regularization methods that each lead to a bias. Reconstruction bias in MPI is most apparent in a mismatch between true and reconstructed tracer distribution. This is expressed globally in the spatial support of the distribution and locally in its intensity values. In this work, MPI reconstruction bias and its impact are investigated and a two-step debiasing method with significant bias reduction capabilities is introduced.