Ryu Jeong-Ah, Kim Bohyun, Kim Sooah, Yang Soon Ha, Choi Moon Hae, Ahn Hyeong Sik
Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Korean J Radiol. 2003 Jul-Sep;4(3):184-90. doi: 10.3348/kjr.2003.4.3.184.
To determine the usefulness of tissue harmonic imaging (THI) and pulse-inversion harmonic imaging (PIHI) in the evaluation of normal and abnormal fetuses.
Forty-one pregnant women who bore a total of 31 normal and ten abnormal fetuses underwent conventional ultrasonography (CUS), and then THI and PIHI. US images of six organ systems, namely the brain, spine, heart, abdomen, extremities and face were compared between the three techniques in terms of overall conspicuity and the definition of borders and internal structures.
For the brain, heart, abdomen and face, overall conspicuity at THI and PIHI was significantly better than at CUS (p < 0.05). There was, though, no significant difference between THI and PIHI. Affected organs in abnormal fetuses were more clearly depicted at THI and PIHI than at CUS.
Both THI and PIHI appear to be superior to CUS for the evaluation of normal or abnormal structures, particularly the brain, heart, abdomen and face.
确定组织谐波成像（THI）和脉冲反转谐波成像（PIHI）在评估正常和异常胎儿方面的实用性。
41名孕妇共怀有31例正常胎儿和10例异常胎儿，先接受传统超声检查（CUS），然后进行THI和PIHI检查。比较三种技术下六个器官系统（即脑、脊柱、心脏、腹部、四肢和面部）的超声图像在整体清晰度以及边界和内部结构清晰度方面的差异。
对于脑、心脏、腹部和面部，THI和PIHI的整体清晰度明显优于CUS（p < 0.05）。不过，THI和PIHI之间无显著差异。THI和PIHI对异常胎儿中受影响器官的显示比CUS更清晰。
THI和PIHI在评估正常或异常结构，尤其是脑、心脏、腹部和面部方面似乎优于CUS。
