The Value of Prenatal Ultrasonographic Diagnosis of Diastematomyelia

Wei, Qiuju; Cai, Ailong; Xin-tian, Wang; Wang, Xiaoguang; Xie, Liangdi

doi:10.7863/ultra.16.04054

Cited by 7 publications

(4 citation statements)

References 23 publications

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“…Due to the efficient absorption and dissipation of energy by physical crosslinking points, crosslinked domains has been shown to significantly improve the physical properties such as modulus, strength, and toughness. [ 111 ] Numerous experiments have been conducted to determine the relationship between the mechanical properties and the crosslinking density where increasing the crosslinking concentration significantly improves the mechanical properties. [ 112–114 ] Additionally, crosslinking has a significant effect on the stress–strain behavior and increases the tensile stress, which is attributed to the crosslinking constraints on polymer deformation.…”

Section: Resultsmentioning

confidence: 99%

Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

Ahn

Kim

Hong

et al. 2022

Adv Funct Materials

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The development of flexible displays and electronics is hindered by the disadvantages of polymeric window films, such as low mechanical strength, poor optical properties, and lack of folding and rolling reliability. To overcome these critical limitations, a novel colorless polyimide window film is prepared in this study using the concept of charge‐transfer complex (CTC) intensification. The resulting window film has a tensile modulus of 8.4 GPa, total transmittance of ≈90%, and yellow index below 3, which is the best recorded balance between mechanical strength and optical properties for a highly flexible optical film. Unlike commercially available optical‐grade engineering plastic films and glass substrates, the prepared window film has both pencil hardness grade over 2H and folding reliability over 200 000 folding/unfolding cycles. These remarkable properties are attributed to the unique supramolecular structure with multiple hydrogen bonding and salt complexation interactions, which exhibits CTC intensification. The CTC intensification mechanism is also proposed in this study.

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Section: Resultsmentioning

confidence: 99%

Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

Ahn

Kim

Hong

et al. 2022

Adv Funct Materials

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“…One would also see hyperechogenic masses usually located behind the ossification center of vertebral bodies. The usual division of the spinal cord can be seen in the transverse plane [8].…”

Section: Discussionmentioning

confidence: 99%

A Case of Diastematomyelia Presenting With Minimal Neurologic Deficits in a Middle-Aged Patient

Mamo

Batra

Steinig

2021

Cureus

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Diastematomyelia is a rare congenital deformity of the spine in which the spinal cord is split into two hemicords along the sagittal plane. This condition belongs to the group of spinal dysraphisms, is more common in females, and is usually diagnosed prenatally or during childhood; rarely is it diagnosed in adults. We report a male patient in his 50s in which diastematomyelia of the thoracic spine was incidentally encountered after receiving a CT scan of the chest for shortness of breath. Although most patients with this condition are symptomatic, the patient did not display any significant acute neurological complaints at the time. The patient had a history of spina bifida and is paraplegic, both of which are commonly associated with diastematomyelia. The lack of progressive neurologic symptoms, diagnosis in the patient's adult life, and the presence of the anomaly solely in the thoracic spine make this a rare and unusual case. Early recognition and diagnosis of this condition, by prenatal ultrasound or MRI, can help to prevent further damage to the spinal cord and allow affected patients to seek treatment sooner, thus improving quality of life.

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“…TAPS is caused by the slow and chronic unbalanced fetofetal transfusion through minuscule placenta anastomoses, leading to anemia in the donor and polycythemia in the recipient, without differences between AFVs 57 . Because prenatal ultrasound has a good predictive value, the antenatal diagnosis of TAPS is based on the discordant fetal Doppler measurements 58 . According to the ISUOG guidelines, 10 the criteria are recommended as MCA-PSV >1.5 multiples of the median (MoM) in the donor and MCA-PSV <1.0 MoM in the recipient.…”

Section: Diagnosis and Management Of Tapsmentioning

confidence: 99%

The Controversies and Challenges in the Management of Twin Pregnancy: From the Perspective of International Federation of Gynecology and Obstetrics Guidelines

Liu

Zhao

et al. 2022

Maternal Fetal Med

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The rate of multiple pregnancy is increasing, mainly because of the widespread use of assisted reproduction techniques and families’ desire for twins. Twin pregnancy accounts for a higher risk of chromosomal abnormalities, structural malformations, and neonatal adverse events than singleton pregnancy. The presence of artery-vein anastomoses, unbalanced placenta sharing, and abnormal cord insertion in monochorionic twins is associated with twin complications such as twin-to-twin transfusion syndrome, selective intrauterine growth restriction, and twin anemia polycythemia sequence. Although many guidelines and studies have established and improved the processes about the antenatal surveillance and management of twin pregnancy, they also raise more controversies and challenges. This review aims to highlight the international consensus on the antenatal care of twin pregnancies and analyze the controversies and predicaments based on the published International Federation of Gynecology and Obstetrics guidelines and research.

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The Value of Prenatal Ultrasonographic Diagnosis of Diastematomyelia

Abstract: Prenatal ultrasonography contributes to the diagnosis of diastematomyelia and provides a basis for prenatal counseling and prognosis.

Cited by 7 publications

References 23 publications

Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

A Case of Diastematomyelia Presenting With Minimal Neurologic Deficits in a Middle-Aged Patient

The Controversies and Challenges in the Management of Twin Pregnancy: From the Perspective of International Federation of Gynecology and Obstetrics Guidelines

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