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| Comparison Study among Conventional, Tissue Harmonic and Pulse Inversion Harmonic Images to Evaluate Pleural Effusion and Ascites |
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| Hwan Hoon Chung Yun Hwan Kim, Chang Ho Kang, Bum Jin Park, Kyoo Byung Chung, Won Hyuck Suh |
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| Department of Radiology, College of Medicine, Korea University |
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| PURPOSE : To determine the most useful sonographic technique to evaluate pleural effusion and ascites by comparing
conventional, tissue harmonic and pulse inversion harmonic images
MATERIALS and METHODS : 12 patients having pleural effusion and 14 patients having ascites were included in this study.
18 patients were male and 8 patients were female. Average age was 54.8yrs(25-77). We compared images
which had been taken at the same section with 3 above mentioned sonographic techniques. Evaluation was done
by 3 radiologists in consensus and grades were given to 3 techniques from 1 to 3. Evaluating points were 1) normal
structures that border the fluid such as liver, peritoneal lining, pleura, 2) septation in fluid, 3) debris floating
in fluid, and 4) artifacts.
RESULTS : Pulse inversion harmonic image was the best in image quality for normal structures, followed by tissue
harmonic and conventional image(p<0.05). Pulse inversion harmonic image was better than conventional image
to evaluate septation in fluid(p<0.05), but there were no statistically significant difference between pulse inversion
and tissue harmonic images, and tissue harmonic and conventional images. Tissue harmonic image was
better than pulse inversion harmonic and conventional images to evaluate debris floating in fluid(p<0.05) but
there was no statistically significant difference between these two latter techniques. Artifacts were most prominent
on conventional image followed by tissue harmonic and pulse inversion harmonic image(p<0.05).
CONCLUSION : Pulse inversion harmonic image was the best sonographic technique to evaluate pleural effusion or
ascites, However, Tissue harmonic image was the best for evaluation of debris |
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| Keyword : Ultrasound(US), technology, comparative studies |
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pdf파일 : 335정환훈.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2000 ; 19 (4) : p.335-341
