A unique case of medulla oblongata epidermoid cyst.

Epidermoid cysts (ECs) are slow-growing, benign tumors that represent <2% of all intracranial tumors. ECs can be divided into following two types: extra-axial and intra-axial. Extra-axial ECs are most often positioned in the cerebellopontine angle.

Bruxism, Related Factors and Oral Health-Related Quality of Life Among Vietnamese Medical Students.

Although bruxism is a common issue with a high prevalence, there has been a lack of epidemiological data about bruxism in Vietnam. This cross-sectional study aimed to determine the prevalence and associated factors of bruxism and its impact on oral health-related quality of life among Vietnamese medical students. Bruxism was assessed by the Bruxism Assessment Questionnaire.

Predatory Open Access Journals are Indexed in Reputable Databases: a Revisiting Issue or an Unsolved Problem.

Introduction: Pseudo journals, hijacked journals, fraudulent journals, fake journals, and predatory journals waste valuable research when authors publish their studies in them.

Aim: This article described novel suggested features for the identification of fraudulent journals and aimed to explain this issue to help inexperienced scientists avoid publishing in predatory journals.

Methods: The articles related to this topic in were retrieved from PubMed and trustable Internet sources.

Interventions for increasing colorectal cancer screening uptake among African-American men: A systematic review and meta-analysis.

Background: African-American men have the lowest 5-year survival rate in the U.S. for colorectal cancer (CRC) of any racial group, which may partly stem from low screening adherence.

Cement Leakage in Percutaneous Vertebroplasty for Multiple Osteoporotic Vertebral Compression Fractures: A Prospective Cohort Study.

Purpose: This study аims to explore cement leаkаge аs а complication of percutаneous vertebroplаsty (PVP) in the treаtment of multiple osteoporotic vertebrаl compression frаctures (MOVF).

Patients And Methods: This prospective study wаs cаrried out on 32 consecutive pаtients with osteoporotic frаctures of аt leаst two vertebrаe (VB). Аll pаtients were over 50 yeаrs old аnd women аccounted for 29 out of the 32 pаtients (90.

Pressure effects on the EXAFS Debye-Waller factor of iron.

The pressure effects on atomic mean-square relative displacement characterizing the extended X-ray absorption fine structure (EXAFS) Debye-Waller factor of iron metal have been investigated based on the Debye model. The analytical expressions of the Debye frequency and EXAFS Debye-Waller factor have been derived as functions of crystal volume compressibility. Based on the well established equation-of-state including the contributions of the anharmonic and electronic thermal pressures, numerical calculations have been performed for iron up to a pressure of 220 GPa and compared with experimental data when possible.

Diel variability of methane emissions from lakes.

Lakes are considered the second largest natural source of atmospheric methane (CH). However, current estimates are still uncertain and do not account for diel variability of CH emissions. In this study, we performed high-resolution measurements of CH flux from several lakes, using an automated and sensor-based flux measurement approach (in total 4,580 measurements), and demonstrated a clear and consistent diel lake CH flux pattern during stratification and mixing periods.

An Overview of Vietnamese Society of Interventional Radiology.

Introduction: The Vietnamese Society of Interventional Radiology (VSIR) is one of the world's youngest interventional radiology (IR) societies, with more than 150 members. During the first decade of the development phase, in addition to a number of achievements, the VSIR has continued to address problematic circumstances.

Aim: This article aims to describe the current status of VSIR, to introduce VSIR to other IR societies.

The Efficacy of Transanal Total Mesorectal Excision: a Preliminary Vietnamese Report.

Introduction: The e physical anatomical characteristics of Vietnamese people are similar to those of other East Asian populations, with a deep and narrow pelvis but an average body mass index (BMI) among patients at the advanced stage of rectal cancer.

Aim: This study aimed to prospectively evaluate the short-term outcomes of transanal total mesorectal excision (TaTME) for rectal cancer treatment in a Vietnamese population.

Methods: A total of 64 patients who underwent TaTME were included in this study.

The value of multidetector-row computed tomography in lymph node staging of gastric cancer: a preliminary Vietnamese study.

Introduction: Gastric cancer (GC) is the fourth most common malignant disease in the world, following breast cancer, colorectal cancer, and lung cancer. This study aimed to evaluate the usefulness of multidetector-row computed tomography (MDCT) in identifying the metastatic lymph node of GC.

Material And Methods: A cross-sectional study was performed after receiving approval by the institutional review board.

Impacts of Novel Vietnamese Government Regulations on Radiological PhD and Professorship Candidates: an Initial Report.

Introduction: In Vietnam, the successful publication of research in indexed journals is mandatory to obtain academic appointments and promotions in medical colleges and institutions, according to the current guidelines established by the State Council for Professorship and Ministry of Education and Training.

Aim: This study aimed to investigate the impacts of novel Vietnamese government regulations on radiological PhD and professorship candidates.

Methods: This study evaluated freely accessible data, available online, and, therefore, did not require institutional review board approval.

Vietnamese Case Series of Hirayama Disease.

Background/aim: Hirayama disease, a rare neurological disorder, is characterized by progressive, asymmetric muscle atrophy of the forearm and hand in young male patients.

Case Report: We noted two cases of Hirayama disease that appeared in the right upper limb and identified the cervical neutral and flexion position magnetic resonance imaging (MRI) characteristics.

Conclusion: In the flexion posture, the cervical MRI allows early diagnosis of Hirayama disease and should be considered in patients with the typical clinical symptoms.

Diagnostic Function of 3-Tesla Magnetic Resonance Imaging for the Assessment of Brachial Plexus Injury.

Background: This study aimed to evaluate the diagnostic function of 3-Tesla (T) magnetic resonance imaging (MRI) during the assessment of brachial plexus injury (BPI), in comparison with intraoperative findings.

Methods: A retrospective study was performed on 60 patients (47 men and 13 women), who had clinical manifestations of BPI, underwent 3T MRI of the brachial plexus, and were surgically treated at the Viet Duc and Vinmec Times City hospitals, in Hanoi, Vietnam, from March 2016 to December 2019. Preganglionic and postganglionic lesion features were identified on MRI.

The role of diffusion tensor imaging metrics in the discrimination between cerebellar medulloblastoma and brainstem glioma.

Background: Differentiation between cerebellar medulloblastoma and brainstem glioma is necessary for certain clinical circumstances. We aimed to evaluate the function of diffusion tensor imaging (DTI) metrics in the differentiation between cerebellar medulloblastomas and brainstem gliomas in children.

Procedure: The institutional review board approved this prospective study.

A Case Series of Ethmoidal Dural Arteriovenous Fistulas Treated by Endovascular Embolization with Onyx.

Introduction: Ethmoidal dural arteriovenous fistulas (eDAVFs) are an unusual type of intracranial vascular lesion that commonly present with acute haemorrhage.

Aim: We presented 3 cases of ethmoidal DAVFs treated effectively by endovascular embolization with Onyx.

Results: 3 patients hospitalized by reasons of stroke (2 cases) and vision impairment of the right eye (1 case).

Comparing the Efficacy of Radiofrequency Ablation Versus Laser Ablation for Chronic Venous Insufficiency in the Lower Extremities: a Vietnamese Report.

Introduction: Chronic venous insufficiency (CVI) is a chronic condition, triggered by reflux through the saphenous vein network.

Aim: To determine the efficacy of endovenous laser ablation (LA) and radiofrequency ablation (RFA) for CVI treatment in the lower extremities, at the Bach Mai Radiology Center.

Methods: This retrospective study was approved by the institutional review board of Bach Mai Hospital.

Structural mechanism underlying primary and secondary coupling between GPCRs and the Gi/o family.

Heterotrimeric G proteins are categorized into four main families based on their function and sequence, Gs, Gi/o, Gq/11, and G12/13. One receptor can couple to more than one G protein subtype, and the coupling efficiency varies depending on the GPCR-G protein pair. However, the precise mechanism underlying different coupling efficiencies is unknown.

DFT Prediction of Factors Affecting the Structural Characteristics, the Transition Temperature and the Electronic Density of Some New Conjugated Polymers.

Conjugated polymers are promising materials for various cutting-edge technologies, especially for organic conducting materials and in the energy field. In this work, we have synthesized a new conjugated polymer and investigated the effect of distance between bond layers, side-chain functional groups (H, Br, OH, OCH and OCH) on structural characteristics, phase transition temperature (T), and electrical structure of CHOS using Density Functional Theory (DFT). The structural characteristics were determined by the shape, network constant (a, b and c), bond length (C-C, C-H, C-O, C-S, C-Br and O-H), phase transition temperatures, and the total energy (E) on a base cell.

Correction to: Interleukin 6 is a better predictor of 5-year cardiovascular mortality than high-sensitivity C-reactive protein in hemodialysis patients using reused low-flux dialyzers.

The article "Interleukin 6 is a better predictor of 5-year cardiovascular mortality than high-sensitivity C-reactive protein in hemodialysis patients using reused low-fux dialyzers".

Chromium, Cadmium, Lead, and Arsenic Concentrations in Water, Vegetables, and Seafood Consumed in a Coastal Area in Northern Vietnam.

Background: Heavy metal contamination and related risks for the environment and human health are matters of increasing concern.

Methods: The levels of 4 heavy metals (Cr, Cd, Pb, and As) were evaluated in 2 water types (surface and well), 4 types of seafood (tiger shrimp, stuffed snail, snake-head fish, and catfish), and 27 types of vegetables (12 leafy vegetables, 4 pea plants, 4 tuber vegetables, and 7 herbs) that are commonly consumed in northern coastal communes located in Vietnam. Atomic absorption spectrometry was employed for quantification.

Magnetoelectric Vortex Magnetic Field Sensors Based on the Metglas/PZT Laminates.

This paper describes the route, from simulations toward experiments, for optimizing the magnetoelectric (ME) geometries for vortex magnetic field sensors. The research is performed on the base of the Metglas/Piezoelectric (PZT) laminates in both open and closed magnetic circuit (OMC and CMC) geometries with different widths (), lengths (), and diameters (). Among these geometries, the CMC laminates demonstrate advantages not only in their magnetic flux distribution, but also in their sensitivity and in their independence of the position of the vortex center.

The Role of Predictive Model Based on Quantitative Basic Magnetic Resonance Imaging in Differentiating Medulloblastoma from Ependymoma.

Background/aim: Even though advanced magnetic resonance imaging (MRI) can effectively differentiate between medulloblastoma and ependymoma, it is not readily available throughout the world. This study aimed to investigate the role of simple quantified basic MRI sequences in the differentiation between medulloblastoma and ependymoma in children.

Patients And Methods: The institutional review board approved this prospective study.

Massive Dissecting Aneurysm in the Basilar Tip Artery Treated with Intra-aneurysm and Basilar Artery Coiling.

Introduction: Deconstructive versus reconstructive technique remains controversial on the management of acute basilar tip artery dissection.

Aim: We introduced a case report of massive dissecting aneurysm in the basilar tip artery treated with intra-aneurysm and basilar artery coiling.

Results: A 30-year-old male presented with sudden headache and severe vomiting.