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| Application Value of Ultrasonic Backscattering Method in Bone Mineral Density Measurement of Cancellous Bone in Pregnant Women |
| BAI Bo, ZHOU Yuqing, TA Dean |
| Department of Ultrasound, Shanghai Changning Maternity and Infant Health Hospital, Shanghai 200040 |
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Abstract 【Objective】To evaluate the feasibility of ultrasonic backscattering method in measuring cancellous bone mineral density parameters of pregnant women by comparing with ultrasonic transmission method. 【Methods】A total of 235 cases of pregnant women were enrolled in this study from June 2017 to July 2018,who came to Shanghai Changing Maternity and Infant Health Hospital for routine examinations. All cases underwent measuring of bone mineral density(BMD) and speed of sound(SOS) by both ultrasonic backscattering method and ultrasonic transmission method. BMD and SOS were compared between the two method groups. All cases were divided into three study groups in terms pregnant phases: first trimester group(<14 gestational weeks),second trimester group(14～28 gestational weeks)and third trimester group(>28 gestational weeks).Both BMD and SOS obtained by ultrasonic backscattering method were compared among the three groups. 【Results】There were no statistic differences of cancellous bone BMD and SOS obtained either by ultrasonic backscattering method or by ultrasonic transmission method(P>0.05). The cancellous bone BMD and SOS values measured by ultrasonic backscattering method of first trimester group were significantly higher than those of second and third trimester group (P<0.05),and the BMD and SOS values of second trimester group were significantly higher than those of third trimester group (P<0.05). 【Conclusion】Cancellous bone BMD and SOS obtained by ultrasonic backscattering method showed no statistic differences from those detected by ultrasonic transmission method. Ultrasonic backscattering method can be used in bone mineral density monitoring in pregnant women, which reflect the changes in different gestational trimesters.
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Received: 24 October 2022
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2024, Vol. 41 
