Optimizing left atrial appendage imaging: the diagnostic value of left lateral decubitus cardiac CT angiography - Takeaways - MDSpire

Optimizing left atrial appendage imaging: the diagnostic value of left lateral decubitus cardiac CT angiography

  • By

  • Zihao Wang

  • ChenJing Wu

  • Yi Mang

  • Zhuang Zhuang

  • Xinshi Huang

  • Zhenzhang Wang

  • June 5, 2026

  • 0 min

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  • 1

    Single-phase left lateral decubitus (LLD) CCTA significantly improves contrast filling in the left atrial appendage compared to biphasic supine CCTA.

  • 2

    LLD-CCTA reduces the early filling defect rate in the left atrial appendage from 28% to 8.8%, enhancing diagnostic accuracy.

  • 3

    The diagnostic performance of LLD-CCTA is comparable to biphasic supine CCTA, with sensitivity of 100% and specificity of 94%.

  • 4

    Mean effective radiation dose for LLD-CCTA is nearly halved, decreasing from 7.84 mSv to 3.89 mSv, promoting patient safety.

  • 5

    The study supports further multicenter validation of LLD-CCTA before routine clinical adoption due to its diagnostic and safety benefits.

Original Source(s)

Optimizing left atrial appendage imaging: the diagnostic value of left lateral decubitus cardiac CT angiography

  • by Zihao Wang, ChenJing Wu, Yi Mang, Zhuang Zhuang, Xinshi Huang, Zhenzhang Wang

  • June 5, 2026

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