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Liver trauma diagnosis with contrast-enhanced ultrasound: interobserver variability between radiologist and emergency physician in an animal study

Authors
 Je Sung You ; Yong Eun Chung ; Ki Whang Kim ; Seungho Kim ; Jin-Young Choi ; Joon Seok Lim ; Mi-Suk Park ; Myeong-Jin Kim ; Incheol Park ; Sung Phil Chung ; Hye-Jeong Lee 
Citation
 American Journal of Emergency Medicine, Vol.30(7) : 1229~1234, 2012 
Journal Title
 American Journal of Emergency Medicine 
ISSN
 0735-6757 
Issue Date
2012
Abstract
OBJECTIVE: The purpose of our study was to evaluate interobserver variability between the radiologist and emergency physician in detecting blunt liver trauma by conventional and contrast-enhanced ultrasound (US) (CEUS). METHODS: We created 20 sites of blunt liver trauma in rabbits and performed conventional US and CEUS on the animals. A radiologist and an emergency physician independently evaluated the degree of liver trauma. Using contrast-enhanced computed tomography as a reference standard, the diagnostic performance of US and CEUS was calculated. Interobserver variability between radiologist and emergency physician was compared before and after contrast enhancement of US. RESULTS: Overall sensitivity and specificity for detecting liver trauma on conventional US, regardless of the degree of trauma, were 61.1% and 100% for the radiologist and 50% and 100% for the emergency physician. On CEUS, the sensitivity and specificity were 94.4% and 100% for both the radiologist and emergency physician. The interobserver agreement between emergency physician and radiologist increased from 0.867 to 0.955 after contrast enhancement on US. CONCLUSIONS: Contrast-enhanced US may permit a more accurate diagnosis for liver trauma than conventional US by both the radiologist and emergency physician. Contrast-enhanced US may also reduce interobserver variability for this diagnosis.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/89418
DOI
10.1016/j.ajem.2011.06.012
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
1. 연구논문 > 1. College of Medicine > Dept. of Emergency Medicine
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0735675711002877
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