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Updated: Jul 2, 2026
High-resolution Optical Mapping of the Mouse Sino-atrial Node
Published on: December 2, 2016
Anatomical investigation of the sinus node artery using dual-source computed tomography
Long Jiang Zhang1, Yu Zhu Wang, Wei Huang
1Department of Medical Imaging, Jinling Hospital, Clinical School of Medical College, Nanjing University, Nanjing, Jiangsu Province, China.
Dual-source CT effectively visualizes the sinus node artery (SNA) in 3D, revealing its origin, course, and variations. This noninvasive imaging is crucial for understanding SNA anatomy before surgery.
Area of Science:
- Cardiovascular Imaging
- Anatomical Studies
- Medical Diagnostics
Background:
- Limited noninvasive imaging studies exist for sinus node artery (SNA) anatomy.
- Understanding SNA's 3D anatomical relations is crucial for clinical applications.
Purpose of the Study:
- To visualize the in-vivo 3-dimensional anatomical relations of the SNA.
- To assess the utility of dual-source computed tomography (DSCT) for SNA imaging.
Main Methods:
- 101 patients underwent DSCT for SNA visualization.
- Key anatomical parameters including visualization rate, origin, diameter, and course were recorded.
Main Results:
- DSCT visualized the SNA in 95.2% of patients.
- SNAs commonly originated from the right coronary artery (48.1%) or left circumflex artery (49.1%).
- Three main anatomical types (right, left, posterior) and three routes (retrocaval, precaval, pericaval) were identified.
Conclusions:
- DSCT is a viable noninvasive method for visualizing the SNA in vivo.
- This imaging provides essential preoperative knowledge of SNA's origin, course, termination, and anatomical variations.
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