The main objective of this study is to compare pelvimetric measurements performed by Magnetic Resonance Imaging (MRI) and by the EOS imaging system.
During pregnancy, after failure of External Manual Version (EMV) in case of breech fetal presentation, a radiological pelvimetry is performed to evaluate the measurements of the pelvis and decide on the appropriate mode of delivery. Several imaging modalities are used, including pelvic computed tomography (CT),and magnetic resonance imaging (MRI) of the pelvis. CT scan has the disadvantage of maternal irradiation and MRI has the disadvantage of an inaccurate morphological analysis.The EOS® system is an imaging tool used in radiopediatric to allow precise morphological analysis of bone masses with minimal irradiation. The quality of the morphological analysis and measurements provided by the EOS® imaging system is the reason for proposing this study comparing the pelvimetric measurements obtained by MRI and by the EOS® imaging system.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
35
The patients in this group are pregnant women after failure of external manual version (EMV) in case of breech fetal presentation. The participants will successively perform MRI pelvimetry (conventional management) and EOS imaging.
Pr Riethmuller Didier
Grenoble, France
Estimation of the reliability of pelvimetric measurements using Transverse Inlet Diameter measurement
Transverse Inlet Diameter Measurement obtained by EOS® system versus MRI is evaluated in millimeters.
Time frame: Up to 1 day
Estimation of the reliability of pelvimetric measurements using ante posterior diameter measurement
Ante posterior diameter of the pelvic inlet obtained by using EOS® system versus MRI is evaluated in millimeters.
Time frame: Up to 1 day
Estimation of the reliability of pelvimetric measurements using BiSpinous Diameter measurement
BiSpinous Diameter obtained by EOS® system versus MRI is evaluated in millimeters.
Time frame: Up to 1 day
Estimation of the reliability of pelvimetric measurements using Bi-ischiatic mesurement
Bi-ischiatic measurement obtained by EOS® system versus MRI is evaluated in millimeters.
Time frame: Up to 1 day
Estimation of the reliability of pelvimetric measurements using Magin's Index calculation
Magnin's Index calculation obtained by using EOS® system versus MRI is evaluated in millimeters.
Time frame: Up to 1 day
Pelvis morphological description using Cadwell and Moloy classification
Caldwell and Moloy classification (scale) obtained by MRI and EOS® system is qualified.
Time frame: Up to 1 day
Pelvis morphological description using subpubic angle measurement
The measurement of the subpubic angle (in degree) obtained by MRI and EOS® system is qualified.
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Time frame: Up to 1 day
Pelvis morphological description using obturating holes appearance
The appearance of the obturating holes (descriptive analysis) obtained by MRI and EOS® system is qualified.
Time frame: Up to 1 day
Characterization of radiation doses received by EOS® system.
Estimation of irradiation
Time frame: Up to 1 day
Evaluation of the intra and inter-observer reproducibility for radiological interpretation
Blind independent reading of MRI and EOS® images by two radiologists on two different days.
Time frame: 4 days
Evaluation of the intra and inter-observer reproducibility for clinical interpretation
Blind independent reading of MRI and EOS® images by two independent clinician on two different days with conclusion on the mode of delivery.
Time frame: 4 days