Abstract
Purpose
To investigate the diagnostic value of monoexponential, biexponential, and diffusion kurtosis MR imaging (MRI) in distinguishing invasive placentas.
Methods
A total of 53 patients with invasive placentas and 47 patients with noninvasive placentas undergoing conventional diffusion-weighted imaging (DWI), intravoxel incoherent motion (IVIM), and diffusion kurtosis imaging (DKI) were retrospectively enrolled. The mean, minimum, and maximum parameters including the apparent diffusion coefficient (ADC) and exponential ADC (eADC) from standard DWI, diffusion kurtosis (MK), and diffusion coefficient (MD) from DKI and pure diffusion coefficient (D), pseudo-diffusion coefficient (D*), and perfusion fraction (f) from IVIM were measured and compared from the volumetric analysis. Receiver operating characteristics (ROC) curve and logistic regression analyses were conducted to evaluate the diagnostic efficiency of different diffusion parameters for distinguishing invasive placentas.
Results
Comparisons between accreta lesions in patients with invasive placentas (AL) and lower 1/3 part of the placenta in patients with noninvasive placentas (LP) demonstrated that MD mean, D mean, and D* mean were significantly lower while ADC max and D max were significantly higher in invasive placentas (all p < 0.05). Multivariate analysis demonstrated that D mean, D max and D* mean differed significantly among all the studied parameters for invasive placentas. A combined use of these three parameters yielded an AUC of 0.86 with sensitivity, specificity, and accuracy of 84.91%, 76.60%, and 80%, respectively.
Conclusion
The combined use of different IVIM parameters is helpful in distinguishing invasive placentas.
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Data availability
The datasets generated during and analyzed during the current study are not publicly available due to PACS system regulated by Sichuan Provincial People’s Hospital, but are available from the corresponding author on reasonable request.
Abbreviations
- DWI:
-
Diffusion-weighted imaging
- IVIM:
-
Intravoxel incoherent motion
- DKI:
-
Diffusion kurtosis imaging
- ADC:
-
Apparent diffusion coefficient
- eADC:
-
Exponential ADC
- MK:
-
Diffusion kurtosis
- MD:
-
Diffusion coefficient
- ROC:
-
Receiver operating characteristics
- AL:
-
Accreta lesions
- LP:
-
Lower 1/3 part of the placenta
- PAS:
-
Placenta accreta spectrum
- FIGO:
-
International federation of gynaecology and obstetrics
- ESUR:
-
The society of abdominal radiology (SAR) and the European society of urogenital Radiology
- MRI:
-
Magnetic resonance imaging
- CD:
-
Cesaerean delivery
- AUC:
-
Area under the curve
- GA:
-
Gestational age
- EVT:
-
Extravillous trophoblast
- MNGC:
-
Multinucleated trophoblast giant cells
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Funding
This research is supported by Sichuan province science and technology program (2021YJ0237).
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TL: project development, manuscript writing, YW: data collection, ML: data collection, HL: data collection, MW: data collection, GW: manuscript writing. YD, CW, XL have been removed as authors. The new authors approved the version to be published and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
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The authors have no relevant financial or non-financial interests to disclose. All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript. The authors have no financial or proprietary interests in any material discussed in this article.
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Informed consent was obtained from all individual participants included in the study. This study was approved by the Institutional Review Board (IRB) of Sichuan Provincial People’s Hospital.
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Lu, T., Li, M., Wang, Y. et al. Standard diffusion-weighted, diffusion kurtosis and intravoxel incoherent motion in differentiating invasive placentas. Arch Gynecol Obstet 309, 503–514 (2024). https://doi.org/10.1007/s00404-023-06947-4
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DOI: https://doi.org/10.1007/s00404-023-06947-4