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Ultrasound elastography can detect placental tissue abnormalities Cover

Ultrasound elastography can detect placental tissue abnormalities

Radiology and Oncology
Volume 52 (2018): Issue 2 (June 2018)
By:
Open Access
|Jun 2018

Figures & Tables

Figure 1

Representative ultrasound images of hardness of tissue (HT) score (A) The HT score was 1 when the blue area in the ROI was 50% or less. A strain graph, used to assess proper application of compression, is indicated in the lower right (B) The blue and green areas are shown mixed together in relatively equal percentages in the placenta (C) Most of the placenta is indicated in blue. In the left image, the strain ratio is calculated from the region of interest of the fat and placental tissue. In this case, the placental index is 19.83.
Representative ultrasound images of hardness of tissue (HT) score (A) The HT score was 1 when the blue area in the ROI was 50% or less. A strain graph, used to assess proper application of compression, is indicated in the lower right (B) The blue and green areas are shown mixed together in relatively equal percentages in the placenta (C) Most of the placenta is indicated in blue. In the left image, the strain ratio is calculated from the region of interest of the fat and placental tissue. In this case, the placental index is 19.83.

Figure 2

The correlation between the placental index (PI) and z score for estimated fetal weight at prenatal examination (EFW) . There is a significant correlation between the PI and z score for EFW (correlation coefficient, r = -0.55; p < 0.01).
The correlation between the placental index (PI) and z score for estimated fetal weight at prenatal examination (EFW) . There is a significant correlation between the PI and z score for EFW (correlation coefficient, r = -0.55; p < 0.01).

Figure 3

A significant positive correlation was observed between the placental index (PI) and z score of birth weight (correlation coefficient, r = -0.39; p < 0.01).
A significant positive correlation was observed between the placental index (PI) and z score of birth weight (correlation coefficient, r = -0.39; p < 0.01).

Figure 4

Gross pathological findings of the placenta. A macro-photograph of the placenta after delivery. The neonate had fetal growth restriction, diagnosed during elastography evaluation at week 28 of pregnancy. White placental infarction is observed at the bottom right of the photo.
Gross pathological findings of the placenta. A macro-photograph of the placenta after delivery. The neonate had fetal growth restriction, diagnosed during elastography evaluation at week 28 of pregnancy. White placental infarction is observed at the bottom right of the photo.

Figure 5

Histopathological findings of the placenta. Objective lens with 4× magnification. A micro-photograph of the same case as that shown in Figure 4. Complete infarction and incomplete infarction with remaining nuclear stainability are observed. The outlines of the villus remain in the upper right area.
Histopathological findings of the placenta. Objective lens with 4× magnification. A micro-photograph of the same case as that shown in Figure 4. Complete infarction and incomplete infarction with remaining nuclear stainability are observed. The outlines of the villus remain in the upper right area.

HT score and pathological findings related to placental ischemia after delivery

HT score123
(n = 15)(n = 16)(n = 9)
Accelerated maturation of villi (+), (n)122
Infarction (+), (n)213
Villous inflammation (+), (n)011
Total, n, (%)3 (20)4 (25)6 (67)

Population features between the Normal group and SGA group

Normal groupSGA groupP
Number10110
Maternal age (years)34.4 (±5.6)33.6 (±4.7)NS
Gravidity0.9 (±1.2)1.3 (±1.3)NS
Parity0.5 (±0.9)0.6 (±0.7)NS
Gestational age (weeks)31.7 (±6.3)32.8 (±4.2)NS
EFW (SD)+0.11 (±0.74)-2.33 (±0.84)P<0.01
Placental Index8.8 (±10.0)44.3 (±29.4)P<0.01
HT score1.56 (±0.68)2.70 (±0.67)P<0.01
Birth weight (SD)0.11 (±1.13)-2.19 (±1.07)P<0.01
Placenta weight (g)562.3 (±119.7)366 (±120.0)P<0.01
DOI: https://doi.org/10.2478/raon-2018-0024 | Journal eISSN: 1581-3207 | Journal ISSN: 1318-2099
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Language: English
Page range: 129 - 135
Submitted on: Nov 20, 2017
Accepted on: Apr 23, 2018
Published on: Jun 6, 2018
Published by: Association of Radiology and Oncology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
elastography,
placenta,
small for gestational age,
ultrasound
Related subjects:
Medicine,
Clinical medicine,
Internal medicine,
Haematology, oncology,
Radiology

© 2018 Tomoya Hasegawa, Naoaki Kuji, Fumiaki Notake, Tetsu Tsukamoto, Toru Sasaki, Motohiro Shimizu, Kazunori Mukaida, Hiroe Ito, Keiichi Isaka, Hirotaka Nishi, published by Association of Radiology and Oncology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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