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Nallet C, Pazart L, Cochet C, Vidal C, Metz JP, Jacquet E, Gorincour G, Mottet N. Prenatal quantification of human foetal lung and liver elasticities between 24 and 39 weeks of gestation using 2D shear wave elastography. Eur Radiol 2022; 32:5559-5567. [PMID: 35267093 PMCID: PMC9279217 DOI: 10.1007/s00330-022-08654-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 02/13/2022] [Accepted: 02/14/2022] [Indexed: 01/18/2023]
Abstract
Objectives To quantify and model normal foetal lung and liver elasticities between 24 and 39 weeks of gestation (WG) using two-dimensional shear wave elastography (2D-SWE). To assess the impact of the distance between the probe and the target organ on the estimation of elasticity values. Methods Measurements of normal foetal lungs and liver elasticity were prospectively repeated monthly between 24 and 39 WG in 72 foetuses using 2D-SWE. Elasticity was quantified in the proximal lung and in the region inside the hepatic portal sinus. The distance between the probe and the target organ was recorded. Trajectories representing foetal lung and liver maturation from at least 3 measurements over time were modelled. Results The average elasticity for the lung and liver was significantly different from 24 WG to 36 WG (p < 0.01). Liver elasticity increased during gestation (3.86 kPa at 24 WG versus 4.45 kPa at 39 WG). From 24 WG to 32 WG, lung elasticity gradually increased (4.12kPa at 24 WG, 4.91kPa at 28 WG, 5.03kPa at 32 WG, p < 0.002). After 32 WG, lung elasticity decreased to 4.54kPa at 36 WG and 3.94kPa at 39 WG. The dispersion of the average elasticity values was greater for the lung than for the liver (p < 0.0001). Variation in the elasticity values was less important for the liver than for the lung. The values were considered valid and repeatable except for a probe-lung distance above 8cm. Conclusion Foetal lung and liver elasticities evolve differently through gestation. This could reflect the tissue maturation of both organs during gestation. Trial registration clinicaltrials.gov identifier: NCT03834805 Key Points • Prenatal quantification of foetal lung elasticity using 2D shear wave elastography could be a new prenatal parameter for exploring foetal lung maturity. • Liver elasticity increased progressively from 24 weeks of gestation (WG) to 39 WG, while lung elasticity increased first between 24 and 32 WG and then decreased after 32 WG. • The values of elasticity are considered valid and repeatable except for a probe-lung distance above 8cm.
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Affiliation(s)
- Camille Nallet
- Pôle Mère-Femme, Department of Obstetrics and Gynecology, University Hospital of Besancon, University of Franche-Comte, Boulevard Alexandre Fleming, 25000, Besançon, France.
| | - Lionel Pazart
- Centre d'investigation Clinique-Innovation Technologique 1431, INSERM, University Hospital of Besançon, 25000, Besançon, France
| | - Claire Cochet
- Pôle Mère-Femme, Department of Obstetrics and Gynecology, University Hospital of Besancon, University of Franche-Comte, Boulevard Alexandre Fleming, 25000, Besançon, France
| | - Chrystelle Vidal
- Centre d'investigation Clinique-Innovation Technologique 1431, INSERM, University Hospital of Besançon, 25000, Besançon, France
| | - Jean-Patrick Metz
- Pôle Mère-Femme, Department of Obstetrics and Gynecology, University Hospital of Besancon, University of Franche-Comte, Boulevard Alexandre Fleming, 25000, Besançon, France
| | - Emmanuelle Jacquet
- Department of Applied Mechanics, Université de Bourgogne Franche-Comté, FEMTO-ST Institute, UFC/CNRS/ENSMM/UTBM, 25000, Besançon, France
| | - Guillaume Gorincour
- Institut Méditerranéen d'Imagerie Médicale Appliquée à la Gynécologie, la Grossesse et l'Enfance (IMAGE 2), 6 Rue Rocca, 13008, Marseille, France
| | - Nicolas Mottet
- Pôle Mère-Femme, Department of Obstetrics and Gynecology, University Hospital of Besancon, University of Franche-Comte, Boulevard Alexandre Fleming, 25000, Besançon, France
- Nanomedicine Lab, Imagery and Therapeutics, EA4662, University of Franche-Comte, 25000, Besancon, France
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Feasibility of two-dimensional ultrasound shear wave elastography of human fetal lungs and liver: A pilot study. Diagn Interv Imaging 2019; 101:69-78. [PMID: 31447393 DOI: 10.1016/j.diii.2019.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/02/2019] [Accepted: 08/05/2019] [Indexed: 01/18/2023]
Abstract
PURPOSE The first aim was to evaluate feasibility and reproducibility of 2-dimensional ultrasound (2D) shear wave elastography (SWE) of human fetal lungs and liver between 24 and 34weeks of gestation. The second aim was to model fetal lung-to-liver elastography ratio (LLE ratio) and to assess its variations according to gestational age and maternal administration of corticosteroids. MATERIAL AND METHODS 2D-SWE examinations were prospectively performed in fetuses of women with an uncomplicated pregnancy (group 1) and fetuses of women with a threatened preterm labor requiring administration of corticosteroids (group 2). Two 2D-SWE examinations were performed at "day 0" and "day 2" in group 1; before and 24hours after a course of corticosteroid in group 2. Three operators performed 2 cycles of 3 measurements on the lung (regions A1, A2, A3) and the liver (regions IV, V, VI). Repeatability and reproducibility of measurements were calculated. The fetal LLE ratio was modeled from the most reproducible regions. RESULTS Fifty-five women were enrolled in group 1 and 48 in group 2. For the lung, 8.6% of measurements were considered invalid and 6.9% for the liver. The most reproducible region for the lung was A3 [ICC between 0.70 (95% CI: 0.42-0.85) and 0.78 (95% CI: 0.48-0.90)] and region VI for the liver [ICC between 0.70 (95% CI: 0.40-0.85) and 0.84 (95% CI: 0.60-0.94)]. According to gestational age, a moderate positive linear correlation was found for stiffness values of A3 (R=0.56), V (R=0.46) and VI (R=0.44). LLE ratio values at "day 0" were not different between the two groups but decreased at "day 2" in group 2 (0.2; 95% CI: 0.07-0.34; P<0.001). CONCLUSION Quantitative fetal lung and liver stiffness measurements are possible with 2D-SWE with acceptable reproducibility.
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da Silva PDA, Uscategui RAR, Santos VJC, Taira AR, Mariano RSG, Rodrigues MGK, Simões APR, Maronezi MC, Avante ML, Monteiro FOB, Vicente WRR, Feliciano MAR. Acoustic radiation force impulse (ARFI) elastography to asses maternal and foetal structures in pregnant ewes. Reprod Domest Anim 2018; 54:498-505. [PMID: 30489657 DOI: 10.1111/rda.13384] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 11/18/2018] [Indexed: 12/15/2022]
Abstract
The aim of this study was to evaluate the stiffness of foetal lungs, liver, kidneys and placentomes by acoustic radiation force impulse (ARFI) elastography in ovine and to correlate obtained findings with foetal development. Twenty-four ewes were included, and tissue stiffness of foetal lung, liver, kidney and placentome was measured beginning with 10th gestational week by qualitative-quantitative ARFI elastography. A total of 33 healthy lambs were born. Qualitative elastographic analysis permitted to classify maternal and foetal tissues elasticity in decreasing order as follows: placentome, kidney, liver and lung. Regarding quantitative ARFI elastography data, shear wave velocity (SWV) of foetal lung and liver varied. The lung SWV decreased gradually from the 16th to the 21st gestational week (R2 = 0.80; p < 0.001), while liver SWV increased gradually from the 14th to 21st gestational week (R2 = 0.80; p < 0.001). In contrast, the kidneys and placentomes SWV's remained constant through gestation (p = 0.076; and 0.34). ARFI elastography was shown feasible for evaluation of maternal and foetal tissues stiffness in the ovine model. It can be used to demonstrate pulmonary and hepatic stiffness modifications during foetal development.
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Affiliation(s)
- Priscila D A da Silva
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Ricardo Andrés R Uscategui
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Victor J C Santos
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Augusto R Taira
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Renata S G Mariano
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Mariana G K Rodrigues
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Ana Paula R Simões
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Marjury C Maronezi
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Michelle L Avante
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Frederico O B Monteiro
- Instituto da Saúde e Produção Animal, Universidade Federal Rural da Amazônia, Belem, Brazil
| | - Wilter R R Vicente
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Marcus A R Feliciano
- Faculda de Ciências Agrárias e Veterinárias, Department of Animal Reproduction, Universidade Estadual Paulista, Jaboticabal, Brazil.,Sector of Diagnostic Imaging, Universidade Federal do Recôncavo da Bahia, Jaboticabal, Brazil
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Rodrigues Simões AP, Rossi Feliciano MA, Maronezi MC, Uscategui RAR, Bartlewski PM, de Almeida VT, Oh D, do Espírito Santo Silva P, da Silva LCG, Russiano Vicente WR. Elastographic and echotextural characteristics of foetal lungs and liver during the final 5 days of intrauterine development in dogs. Anim Reprod Sci 2018; 197:170-176. [PMID: 30146093 DOI: 10.1016/j.anireprosci.2018.08.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 07/25/2018] [Accepted: 08/20/2018] [Indexed: 10/28/2022]
Abstract
Objective was to evaluate the echotexture and characteristics during terminal development of canine foetal respiratory and hepatic systems through elastographic examinations. Fifteen pregnant bitches were evaluated by ultrasonography twice daily, from the 53rd gestational day until whelping, and images obtained from 120 to 0 h before parturition were analysed. Images of foetal lungs and liver were recorded and then used for computer-assisted analyses to determine quantitative attributes. Acoustic Radiation Force Impulse (ARFI) elastographic of internal organs were classified as 'soft' (white areas) or 'hard' (dark areas) and quantitative analyses determined the mean shear wave velocities (SWV) of foetal lungs and liver. After delivery, canine neonates were clinically evaluated, and their health status was monitored weekly until 60 days post-partum. Sonographic parameters over time were compared by ANOVA and Pearson's correlations were used to determine associations between SWVs and echotextural variables. Foetal lungs and liver had a homogeneous echotexture and pulmonary parenchyma appeared hyperechoic when compared with that of the liver. Mean numerical pixel values (NPVs) of lungs decreased from 120 to 24 h and subsequently increased until parturition (P = 0.04). Lungs and liver mean (± SD) SWVs (0.98 ± 0.12 and 0.84 ± 0.11 m/s, respectively) didn't vary (P > 0.05) over time. Fluctuations in pulmonary NPVs indicated there was a pattern corresponding to structural and functional changes that occur during the terminal stage of pre-natal canine development and hence can be a useful diagnostic tool in veterinary. Foetal lung and liver SWVs were relatively consistent and there was no detectable changes during the pre-partum period for this variable or in echotexture.
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Affiliation(s)
- Ana Paula Rodrigues Simões
- Department of Animal Reproduction, Faculdade de Ciências Agrárias e Veterinárias - UNESP, Av. Prof. Paulo Donato Castellane S/N, 14884-900, Jaboticabal, SP, Brazil
| | - Marcus Antonio Rossi Feliciano
- Department of Animal Reproduction, Faculdade de Ciências Agrárias e Veterinárias - UNESP, Av. Prof. Paulo Donato Castellane S/N, 14884-900, Jaboticabal, SP, Brazil; Universidade Federal do Recôncavo da Bahia, Rua Rui Barbosa 710, 44380-000, Cruz das Almas, BA, Brazil.
| | - Marjury Cristina Maronezi
- Department of Veterinary Clinical and Surgery, Faculdade de Ciências Agrárias e Veterinárias - UNESP, Av. Prof. Paulo Donato Castellane S/N, 14884-900, Jaboticabal, SP, Brazil
| | - Ricardo Andres Ramirez Uscategui
- Department of Veterinary Clinical and Surgery, Faculdade de Ciências Agrárias e Veterinárias - UNESP, Av. Prof. Paulo Donato Castellane S/N, 14884-900, Jaboticabal, SP, Brazil
| | | | - Vivian Tavares de Almeida
- Department of Veterinary Clinical and Surgery, Faculdade de Ciências Agrárias e Veterinárias - UNESP, Av. Prof. Paulo Donato Castellane S/N, 14884-900, Jaboticabal, SP, Brazil
| | - David Oh
- Ontario Veterinary College, University of Guelph, 50 Stone Road E, Guelph, ON, Canada
| | - Paloma do Espírito Santo Silva
- Department of Veterinary Clinical and Surgery, Faculdade de Ciências Agrárias e Veterinárias - UNESP, Av. Prof. Paulo Donato Castellane S/N, 14884-900, Jaboticabal, SP, Brazil
| | - Liege Cristina Garcia da Silva
- Faculdade de Medicina Veterinária e Zootecnia da, Universidade de São Paulo, USP, Av. Prof. Dr. Orlando Marques de Paiva, 87, 05508 270, SP, Brazil
| | - Wilter Ricardo Russiano Vicente
- Department of Animal Reproduction, Faculdade de Ciências Agrárias e Veterinárias - UNESP, Av. Prof. Paulo Donato Castellane S/N, 14884-900, Jaboticabal, SP, Brazil
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Issaoui M, Debost-Legrand A, Skerl K, Chauveau B, Magnin B, Delabaere A, Boyer L, Sauvant-Rochat MP, Lémery D. Shear wave elastography safety in fetus: A quantitative health risk assessment. Diagn Interv Imaging 2018; 99:519-524. [PMID: 29934239 DOI: 10.1016/j.diii.2018.04.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/09/2018] [Accepted: 04/18/2018] [Indexed: 01/18/2023]
Abstract
PURPOSE To identify the effects of shear wave elastography in the fetus for evaluation in widespread use. MATERIALS AND METHODS The Health Risk Assessment method proposed by the National Research Council was used with literature to evaluate the safety of shear wave elastography for the fetus regarding its potential effects in human tissues. RESULTS The experimental and epidemiologic data from 25 articles showed that shear wave elastography maintained the same thermal effect as pulsed Doppler ultrasound already authorized in obstetrics, and that cavitation effect on fetal tissue is improbable. Nonetheless, the vibratory character of shear waves could induce displacement of fetal tissue while potential effects of very short duration energy peaks of the radiation force focused wave front remain unknown. CONCLUSION The actual knowledge does not provide enough information to assess the effects of shear wave elastography on fetal tissues, thus these points have to be explored by further experimental studies.
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Affiliation(s)
- M Issaoui
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France
| | - A Debost-Legrand
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France; Pôle Femme et Enfant, centre hospitalier universitaire de Clermont-Ferrand, 63003 Clermont-Ferrand, France
| | - K Skerl
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France
| | - B Chauveau
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France; Pôle radiologie, centre hospitalier universitaire de Clermont-Ferrand, 63003 Clermont-Ferrand, France
| | - B Magnin
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France; Pôle radiologie, centre hospitalier universitaire de Clermont-Ferrand, 63003 Clermont-Ferrand, France
| | - A Delabaere
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France; Pôle Femme et Enfant, centre hospitalier universitaire de Clermont-Ferrand, 63003 Clermont-Ferrand, France
| | - L Boyer
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France; Pôle radiologie, centre hospitalier universitaire de Clermont-Ferrand, 63003 Clermont-Ferrand, France
| | - M-P Sauvant-Rochat
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France; Pôle Femme et Enfant, centre hospitalier universitaire de Clermont-Ferrand, 63003 Clermont-Ferrand, France; Département de santé publique et environnement, université Clermont-Auvergne, faculté de pharmacie, 63000 Clermont-Ferrand, France
| | - D Lémery
- CNRS-UMR 6602, institut Pascal, université Clermon-Auvergne, Axe TGI, 63000 Clermont-Ferrand, France; Pôle Femme et Enfant, centre hospitalier universitaire de Clermont-Ferrand, 63003 Clermont-Ferrand, France.
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Simon EG, Callé S, Perrotin F, Remenieras JP. Measurement of shear wave speed dispersion in the placenta by transient elastography: A preliminary ex vivo study. PLoS One 2018; 13:e0194309. [PMID: 29621270 PMCID: PMC5886409 DOI: 10.1371/journal.pone.0194309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 02/28/2018] [Indexed: 12/31/2022] Open
Abstract
Background Placental elasticity may be modified in women with placental insufficiency. Shear wave elastography (SWE) can measure this, using acoustic radiation force, but the safety of its use in pregnant women has not yet been demonstrated. Transient elastography (TE) is a safer alternative, but has not yet been applied to the placenta. Moreover, the dispersion of shear wave speed (SWS) as a function of frequency has received relatively little study for placental tissue, although it might improve the accuracy of biomechanical assessment. Objective To explore the feasibility and reproducibility of TE for placental analysis, to compare the values of SWS and Young’s modulus (YM) from TE and SWE, and to analyze SWS dispersion as a function of frequency ex vivo in normal placentas. Materials and methods Ten normal placentas were analyzed ex vivo by an Aixplorer ultrasound system as shear waves were generated by a vibrating plate and by using an Aixplorer system. The frequency analysis provided the value of the exponent n from a fractional rheological model applied to the TE method. We calculated intra- and interobserver agreement for SWS and YM with 95% prediction intervals, created Bland-Altman plots with 95% limits of agreement, and estimated the intraclass correlation coefficient (ICC). Main results The mean SWS was 1.80 m/s +/- 0.28 (standard deviation) with the TE method at 50 Hz and 1.82 m/s +/-0.13 with SWE (P = 0.912). No differences were observed between the central and peripheral regions of placentas with either TE or SWE. With TE, the intraobserver ICC for SWS was 0.68 (0.50–0.82), and the interobserver ICC for SWS 0.65 (0.37–0.85). The mean parameter n obtained from the fractional rheological model was 1.21 +/- 0.12, with variable values of n for any given SWS. Conclusions TE is feasible and reproducible on placentas ex vivo. The frequency analysis of SWS provides additional information about placental elasticity and appears to be able to distinguish differences between placental structures.
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Affiliation(s)
- Emmanuel G. Simon
- UMR 1253, iBrain, University of Tours, Inserm, Tours, France
- Department of Obstetrics, Gynecology and Fetal Medicine, University Hospital Center of Tours, Tours, France
- * E-mail:
| | - Samuel Callé
- UMR 1253, iBrain, University of Tours, Inserm, Tours, France
- GREMAN, UMR CNRS 7347, University of Tours, Tours, France
| | - Franck Perrotin
- UMR 1253, iBrain, University of Tours, Inserm, Tours, France
- Department of Obstetrics, Gynecology and Fetal Medicine, University Hospital Center of Tours, Tours, France
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Mottet N, Aubry S, Vidal C, Boiteux G, Metz JP, Riethmuller D, Pazart L, Ramanah R. Feasibility of 2-D ultrasound shear wave elastography of fetal lungs in case of threatened preterm labour: a study protocol. BMJ Open 2017; 7:e018130. [PMID: 29282263 PMCID: PMC5770838 DOI: 10.1136/bmjopen-2017-018130] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION 2-D ultrasound shear wave elastography (SWE) could be considered as a new noninvasive tool for monitoring fetal lung development based on evaluation of mechanical properties during pregnancy. Interesting results are available concerning the use of SWE on developing organs, especially on premature infants and animal models. The main objective in this study is to evaluate the feasibility of 2-D SWE in human fetal lungs between 24 and 34 weeks of gestation (WG). The secondary objective is to modellise fetal lung-to-liver elastography ratio (LLE ratio) and to assess variations between normal lung and lung surfactant-enriched after a corticosteroids course indicated for a threatened preterm labour (TPL). METHODS/DESIGN A prospective case-control study will be performed between 24 and 34 WG. Fetal lungs and liver will be explored by SWE into two groups: fetuses of women with an uncomplicated pregnancy (control group) and fetuses of women with a TPL requiring administration of corticosteroids (cases group). LLE ratio will be defined as the value of the lung elasticity divided by the value of the liver elasticity.Primary judgement criterion is the value of elasticity modulus expressed in kilopascal. Lungs and liver will be explored through three measurements to define the most reproducible regions with the lowest intra- and inter-observer variability. Feasibility will be evaluated by assessing the number of examinations performed and the number of examinations with interpretable results. Intra- and inter-observer reproducibility will be evaluated by means of the intra-class correlation coefficient. ETHICS AND DISSEMINATION Approval of the study protocol was obtained from the human ethical research committee (Comité de Protection des Personnes EST II, process number 15/494) and the French National Agency for Medicines and Health Products Safety (process number 2015-A01575-44). All participants will sign a statement of informed consent. TRIAL REGISTRATION NUMBER NCT02870608; Recruiting.
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Affiliation(s)
- Nicolas Mottet
- Department of Obstetrics and Gynaecology, Pôle Mère-Femme, University Hospital of Besancon, University of Franche-Comte, Besançon, France
- Nanomedecine Laboratory, INSERM EA4662, University of Franche-Comte, Besancon, France
| | - Sébastien Aubry
- Nanomedecine Laboratory, INSERM EA4662, University of Franche-Comte, Besancon, France
- Department of Musculoskeletal Imaging, University Hospital of Besancon, Besancon, France
| | - Chrystelle Vidal
- Centre d’investigation Clinique-Innovation Technologique, INSERM, University Hospital of Besançon, Besançon, France
| | - Guillaume Boiteux
- Centre d’investigation Clinique-Innovation Technologique, INSERM, University Hospital of Besançon, Besançon, France
| | - Jean-Patrick Metz
- Department of Obstetrics and Gynaecology, Pôle Mère-Femme, University Hospital of Besancon, University of Franche-Comte, Besançon, France
| | - Didier Riethmuller
- Department of Obstetrics and Gynaecology, Pôle Mère-Femme, University Hospital of Besancon, University of Franche-Comte, Besançon, France
| | - Lionel Pazart
- Centre d’investigation Clinique-Innovation Technologique, INSERM, University Hospital of Besançon, Besançon, France
| | - Rajeev Ramanah
- Department of Obstetrics and Gynaecology, Pôle Mère-Femme, University Hospital of Besancon, University of Franche-Comte, Besançon, France
- Nanomedecine Laboratory, INSERM EA4662, University of Franche-Comte, Besancon, France
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Simon E, Callé S. Safety of elastography applied to the placenta: Be careful with ultrasound radiation force. J Obstet Gynaecol Res 2017; 43:1509. [DOI: 10.1111/jog.13383] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 04/18/2017] [Indexed: 11/30/2022]
Affiliation(s)
- E.G. Simon
- UMR INSERM U930, University of Tours; Tours France
- Department of Obstetrics, Gynecology and Fetal Medicine; University Hospital Center of Tours; Tours France
| | - S. Callé
- UMR INSERM U930, University of Tours; Tours France
- GREMAN, UMR CNRS 7347, University of Tours; Tours France
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Quarello E, Lacoste R, Mancini J, Melot–Dusseau S, Gorincour G. ShearWave elastography of fetal lungs in pregnant baboons. Diagn Interv Imaging 2016; 97:605-10. [DOI: 10.1016/j.diii.2015.11.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 11/23/2015] [Indexed: 10/21/2022]
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[Shear waves elastography of the placenta in pregnant baboon]. ACTA ACUST UNITED AC 2015; 43:200-4. [PMID: 25724446 DOI: 10.1016/j.gyobfe.2015.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 01/15/2015] [Indexed: 11/22/2022]
Abstract
OBJECTIVES To evaluate tissue characteristics of the placenta by transabdominal ShearWave Elastography in pregnant baboon. MATERIALS AND METHOD For 9 months (03/2013-12/2013) two operators (EQ, GG) performed ultrasound of the placenta during pregnancy pregnant baboons station partner primatology project. The identification of the placenta was performed previously in 2D ultrasound. The elastography method was then activated. Three measurements were carried out by operator for each placenta. The intraclass correlation coefficients within and between observers were calculated for the objective assessment (elastography) of placental maturity. RESULTS During the study period, 21 pregnant baboons were included and ultrasounds were performed between 1 and 3 times each. The measurements have been carried out by two operators in 100% of cases. The intra- and inter-observer ICC for single values are respectively 0.657 - 95% CI (0.548 to 0.752) and 0.458 - 95% CI (0.167 to 0.675). The intra- and inter-observer ICC for average values are respectively 0.852 - 95% CI (0.784 to 0.901) and 0.628 - 95% CI (0.286 to 0.806). CONCLUSION The study by transabdominal ShearWave Elastography of placenta's pregnant baboons is possible. The intra- and inter-operator reproducibility of this method is good using the average of three measurements. The objective study via elastography ShearWave of the degree of placental maturity seems not yet be used in clinical practice. Studies of larger cohorts are needed.
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