Normal and Pathological Placental Development: MRI and Pathology

Dekan, Sabine; Linduska, N

doi:10.1007/174_2010_61

Cited by 5 publications

(3 citation statements)

References 59 publications

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“…with expertise in placental imaging and anatomy. Using the T2 anatomical image as a reference, the initial fetal compartment was defined as the placental area immediately adjacent to the umbilical cord insertion site on the volume acquired at b=25 sec/mm 2 , and bounded by areas of diffusing signal intensity within the placenta 14 , and the remainder of the placenta was given as the initial maternal compartment. A total of 30% of the voxels were randomly sampled from both initial fetal and maternal regions, and exploited as seed voxels from which the regions were iteratively improved using the GrowCut method 15 .…”

Section: Methodsmentioning

confidence: 99%

Semi-automatic segmentation of the placenta into fetal and maternal compartments using intravoxel incoherent motion MRI

You

Andescavage

Zun

et al. 2017

Medical Imaging 2017: Biomedical Applications in Molecular, Structural, and Functional Imaging

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Intravoxel incoherent motion (IVIM) magnetic resonance imaging is an emerging non-invasive technique that has been recently applied to quantify in vivo global placental perfusion. We propose a robust semi-automated method for segmenting the placenta into fetal and maternal compartments from IVIM data, using a multi-label image segmentation algorithm called ‘GrowCut’. Placental IVIM data were acquired on a 1.5T scanner from 16 healthy pregnant women between 21-37 gestational weeks. The voxel-wise perfusion fraction was then estimated after non-rigid image registration. The seed regions of the fetal and maternal compartments were determined using structural T2-weighted reference images, and improved progressively through an iterative process of the GrowCut algorithm to accurately encompass fetal and maternal compartments. We demonstrated that the placental perfusion fraction decreased in both fetal (−0.010/week) and maternal compartments (−0.013/week) while their relative difference (ffetal-fmaternal) gradually increased with advancing gestational age (+0.003/week, p=0.065). Our preliminary results show that the proposed method was effective in distinguishing placental compartments using IVIM.

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Section: Methodsmentioning

confidence: 99%

Semi-automatic segmentation of the placenta into fetal and maternal compartments using intravoxel incoherent motion MRI

You

Andescavage

Zun

et al. 2017

Medical Imaging 2017: Biomedical Applications in Molecular, Structural, and Functional Imaging

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“…In percreta, the chorionic villi penetrate the serosal layer of the uterus or even beyond into adjacent organs. 6 The radiological definitions of accreta, increta and percreta are less specific. For the purposes of this article, accreta is defined as partial myometrial invasion, increta is total myometrial invasion and percreta is invasion involving the complete myometrium, serosal layer and beyond.…”

mentioning

confidence: 99%

The MRI features of placental adhesion disorder—a pictorial review

Cuthbert¹,

Viñas²,

Whitby³

2016

The British Journal of Radiology

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Placental adhesion disorder (PAD) comprises placenta accreta, increta and percreta lesions; these are classified according to the depth of uterine invasion. Although PAD is considered a rare condition, its incidence has increased 10-fold in the last 50 years. Ultrasound is the primary imaging modality for the assessment of the placenta and in the majority of cases, it is sufficient for diagnosis; however, when ultrasound findings are suspicious or inconclusive, MRI is recommended as an adjunct imaging technique. Numerous MRI features of PAD have been described, including dark intraplacental bands, disorganized intraplacental vascularity and abnormal uterine bulging. This pictorial review describes and illustrates these characteristics and discusses their implications in planning delivery. In addition, we present a series of "pitfall" cases to aid the interpreting radiologist and discuss management of PAD. PAD is a clinical and diagnostic challenge that is encountered with increasing frequency, requiring a cohesive multidisciplinary approach to its management.

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“…The European Research Journal 2022 onic villi on the myometrium without involving the decidua. The placental villous tissues cause increta to invade the myometrium while the uterus has a percreta serosal layer in the adjacent organs caused by the chorionic villi [5]. The incidence of PAD has increased tenfold during the past fifty years despite its being regarded as a rare condition [6].…”

Section: Early Onlinementioning

confidence: 99%

Investigating the quality-of-life scale in patients with placental adhesion disorder undergoing a cesarean hysterectomy and partial uterine resection

Okçu

Uysal

Gürbüz³

et al. 2022

The European Research Journal

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Objectives: This study aimed to investigate the postoperative quality-of-life of patients with placental adhesion disorder undergoing a cesarean hysterectomy and partial uterine resection. Methods: This was a prospective study performed on 40 patients aged from 25 to 35 years. The subjects were divided into two groups based on whether the uterus was preserved or not following a cesarean hysterectomy and on partial uterine resection. The Turkish version of SF-36 Quality-of-life Scale consisting of 36 items and 8 subscales was applied to the patients. Results: The participants had a mean age of 31.3 ± 3.2 years. The mean parity, number of cesarean sections and body mass index was 3.45, 3.22 and 29.1 ± 2.9, respectively. The mean physical function score was 83.4 ± 11.61 in the cesarean hysterectomy group and 93.67 ± 8.55 in the partial uterine resection group. A significant difference was found between the cesarean hysterectomy and partial uterine resection groups in terms of their health-related quality-of-life (p = 0.005). Conclusions: Patients who underwent partial uterine resection had improved health-related quality-of-life compared to patients who had a cesarean hysterectomy. Choosing uterus-preserving surgery in suitable patients by evaluating the degree of placental adhesion and adhesion size may have a positive effect on the quality-oflife after surgery.

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Normal and Pathological Placental Development: MRI and Pathology

Cited by 5 publications

References 59 publications

Semi-automatic segmentation of the placenta into fetal and maternal compartments using intravoxel incoherent motion MRI

Semi-automatic segmentation of the placenta into fetal and maternal compartments using intravoxel incoherent motion MRI

The MRI features of placental adhesion disorder—a pictorial review

Investigating the quality-of-life scale in patients with placental adhesion disorder undergoing a cesarean hysterectomy and partial uterine resection

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