Tools for coronary MR angiography : non-cartesian trajectories and motion-corrected reconstructions
Abstract/Contents
- Abstract
- X-ray coronary angiography remains the predominant technique for coronary artery examination, yet it exposes both patients and operators to ionizing radiation and is invasive. Despite strong demand for non-invasive and safer alternatives, the clinical adoption of coronary MR angiography has been slow. The primary challenges in coronary MR angiography are its prolonged scan time and limited resolution. Because coronary arteries often follow tortuous paths and have relatively small diameters, high resolving power is required. Additionally, whole-heart imaging is preferred over target-volume methods, as it reduces operator dependency. Achieving large volumetric coverage at high resolution demands collecting a significant amount of data. However, continuous myocardial movement restricts data collection to specific cardiac cycles, necessitating the segmented data acquisition over multiple heartbeats. Consequently, coronary MR angiography is slow and susceptible to both respiratory and cardiac motion. This dissertation introduces several tools for coronary MR angiography categorized into non-Cartesian trajectory design and non-rigid motion-corrected reconstruction. Non-Cartesian trajectories often exhibit higher sampling efficiency and greater robustness against undersampling compared to traditional rectilinear approaches, making them particularly useful for reducing the overall scan duration. Because non-rigid models capture a wide range of transformations, non-rigid motion-corrected reconstruction reduces resolution loss due to respiratory and cardiac motion.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2024; ©2024 |
| Publication date | 2024; 2024 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Jang, Kwang Eun |
|---|---|
| Degree supervisor | Nishimura, Dwight George |
| Thesis advisor | Nishimura, Dwight George |
| Thesis advisor | Coleman, Todd, (Of University of California, San Diego) |
| Thesis advisor | Vasanawala, Shreyas |
| Degree committee member | Coleman, Todd, (Of University of California, San Diego) |
| Degree committee member | Vasanawala, Shreyas |
| Associated with | Stanford University, School of Engineering |
| Associated with | Stanford University, Department of Bioengineering |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Kwang Eun Jang. |
|---|---|
| Note | Submitted to the Department of Bioengineering. |
| Thesis | Thesis Ph.D. Stanford University 2024. |
| Location | https://purl.stanford.edu/sc219dv4593 |
Access conditions
- Copyright
- © 2024 by Kwangeun Jang
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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