Abstract
Respiratory motion compensation for cardiac imaging requires knowledge of the heart's motion and deformation during breathing. This paper presents a method for measuring the natural tidal respiratory motion of the heart from free breathing coronary angiograms. A three-dimensional (3-D) deformation field describing the cardiac and respiratory motion of the coronary arteries is recovered from a biplane acquisition. A cardiac respiratory parametric model is formulated and used to decompose the deformation field into cardiac and respiratory components. Angiograms from ten patients were analyzed. A 3-D translation motion model was sufficient for describing the motion of the heart in only two patients. For all patients, the heart translated caudally (mean, 4.9 ± 1.9 mm; range, 2.4 to 8.0 mm) and underwent a cranio-dorsal rotation (mean, 1.5° ± 0.9°; range, 0.2° to 3.5°) during inspiration. In eight patients, the heart also translated anteriorly (mean, 1.3 ± 1.8 mm; range, -0.4 to 5.1 mm) and rotated in a caudo-dextral direction (mean, 1.2° ± 1.3°; range, -1.9° to 3.2°).
Original language | English (US) |
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Pages (from-to) | 1046-1056 |
Number of pages | 11 |
Journal | IEEE transactions on medical imaging |
Volume | 23 |
Issue number | 8 |
DOIs | |
State | Published - Aug 2004 |
Keywords
- Chest imaging
- Magnetic resonance imaging
- Modeling
- Motion analysis
- Motion compensation
- X-ray angiography
ASJC Scopus subject areas
- Software
- Radiological and Ultrasound Technology
- Computer Science Applications
- Electrical and Electronic Engineering