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Investigation of clinical utility of contrast-enhanced MRI in the diagnosis of ectopic pregnancy.
- Source :
-
Clinical Radiology . Jul2020, Vol. 75 Issue 7, p543-551. 9p. - Publication Year :
- 2020
-
Abstract
- <bold>Aim: </bold>To investigate whether contrast-enhanced (CE)-magnetic resonance imaging (MRI) improves identification of implantation site of ectopic pregnancy.<bold>Materials and Methods: </bold>This retrospective study enrolled 63 patients in whom implantation sites had been confirmed at histopathology. Two expert radiologists for gynaecological imaging and two inexpert radiologists independently reviewed non-CE MRI and a combination of non-CE and CE-MRI (non-CE+CE-MRI), then determined implantation site with a confidence level. The following MRI features were also evaluated: extrauterine gestational sac (GS)-like structure (shape, signal intensities at T1-weighted imaging [WI], T2WI, and diffusion-weighted imaging [DWI], presence of the three rings appearance, and distinct low intensity areas at T2WI, presence of tree or dot-like components, degree of contrast enhancement), fallopian tube (dilatation, dilatation with haematoma, degree of contrast enhancement, enhanced components within the tube), and ascites. These findings were compared for non-CE and non-CE+CE-MRI data, and for expert and inexpert groups.<bold>Results: </bold>The expert group identified implantation sites correctly in 58/63 (92%) cases for non-CE and non-CE+CE-MRI. In the inexpert group, the correct identification was improved from 54/63 (86%) using non-CE MRI to 58/63 (92%) using non-CE+CE-MRI, but was not significant (p=0.29). In comparison between non-CE and non-CE+CE-MRI, dilation of the fallopian tubes was observed more frequently (p=0.004) and the confidence level was elevated significantly in the non-CE+CE-MRI (p<0.0001) in the inexpert group. Intergroup comparison revealed that confidence level was significantly higher in the expert group than in the inexpert group using non-CE MRI (p<0.0001), although the difference was not significant at non-CE+CE MRI (p=0.49).<bold>Conclusion: </bold>CE-MRI did not significantly improve correct identification of ectopic pregnancy implantation sites, although the addition of contrast enhancement did enable inexpert radiologists to diagnose confidently. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00099260
- Volume :
- 75
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Clinical Radiology
- Publication Type :
- Academic Journal
- Accession number :
- 143598525
- Full Text :
- https://doi.org/10.1016/j.crad.2020.02.013