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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2003, Vol. 4 Issue (3): 374-377    DOI: 10.1631/jzus.2003.0374
Biomedicine     
Comparison study of harmonic imaging (HI) and fundamental imaging (FI) in fetal echocardiography
ZHAO Bo-wen, TANG Fu-gang, SHOU Jin-duo, XU Hai-shan, LU Jiang-hong, FAN Miao-ying, FAN Xiao-min, PAN Mei
Department of Diagnostic Ultrasound, Sir Run Run Shaw Hospital,College of Medicine, Zhejiang University, Hangzhou 310016, China
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Abstract  Objectives: To directly compare the quality of harmonic imaging (HI) and fundamental imaging (FI) in fetal echocardiography and to determine any differences in image quality between the two modalities. Methods: Fetal echocardiograms were performed with the use of FI and HI in 58 fetuses, image quality and visualization of left and right atria, left and right ventricles, mitral and tricuspid valves, aortic and pulmonary valves, left and right ventricular outflow tracts were evaluated and compared between FI and HI. Results: Mean HI scores were higher than mean FI scores (2.73±0.43 vs 2.16±0.69, P<0.001)for all the cardiovascular structures evaluated. Compared with FI, HI improved the image quality and visualization of fetal cardiac structures in subjects with both good (2.73±0.43 vs 2.88±0.32, P<0.001) and suboptimal (1.65±0.41 vs 2.58±0.47, P<0.001) echocardiographic windows. The interobserver correlation coefficient for the grading scores was 0.74 (P<0.001). Conclusions: harmonic imaging enhances and improves the image quality of fetal echocardiography; and has important potential role in cardiac imaging in the fetus.

Key words： Fetal echocardiography      Fundamental imaging (FI)      Harmonic imaging (HI)     
Received: 08 November 2002     
CLC:  R540.4  
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ZHAO Bo-wen
TANG Fu-gang
SHOU Jin-duo
XU Hai-shan
LU Jiang-hong
FAN Miao-ying
FAN Xiao-min
PAN Mei
Cite this article:

ZHAO Bo-wen, TANG Fu-gang, SHOU Jin-duo, XU Hai-shan, LU Jiang-hong, FAN Miao-ying, FAN Xiao-min, PAN Mei. Comparison study of harmonic imaging (HI) and fundamental imaging (FI) in fetal echocardiography. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2003, 4(3): 374-377.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2003.0374     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2003/V4/I3/374

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