Predicting Microvascular Invasion in Hepatocellular Carcinoma Using CT-based Radiomics Model.

Background Prediction of microvascular invasion (MVI) may help determine treatment strategies for hepatocellular carcinoma (HCC). Purpose To develop a radiomics approach for predicting MVI status based on preoperative multiphase CT images and to identify MVI-associated differentially expressed genes. Materials and Methods Patients with pathologically proven HCC from May 2012 to September 2020 were retrospectively included from four medical centers.

Structural, electronic, and optical properties of cubic formamidinium lead iodide perovskite: a first-principles investigation.

Hybrid organic-inorganic perovskites have been one of the most active areas of research into photovoltaic materials. Despite the extremely fast progress in this field, the electronic properties of formamidinium lead iodide perovskite (FAPbI) that are key to its photovoltaic performance are relatively poorly understood when compared to those of methylammonium lead iodide (MAPbI). In this study, first-principles total energy calculations based on density functional theory were used to investigate the favored orientation of FA.

Cytosine methylations in the promoter regions of genes involved in the cellular oxidation equilibrium pathways affect rice heat tolerance.

Background: High temperatures, particularly at night, decrease rice yield and quality. As high nighttime temperatures (HNTs) become increasingly frequent due to climate change, it is imperative to develop rice crops that tolerate HNTs. DNA methylation may represent a potential avenue for HNT-tolerant rice strain development, as this mechanism regulates gene activity and cellular phenotype in response to adverse environmental conditions without changing the nucleotide sequence.

Statin Pretreatment Might Be Associated with Decreased Myocardial Injury After Ischemic Stroke.

Background: Myocardial injury is a complication of stroke associated with unfavorable outcome, with the elevation of cardiac troponin as the most sensitive marker. In this study, we aimed at investigating the association between statin pretreatment and poststroke myocardial injury.

Methods: Six hundred seventy-one patients diagnosed as acute ischemic stroke were enrolled.

Development of a Novel Multiparametric MRI Radiomic Nomogram for Preoperative Evaluation of Early Recurrence in Resectable Pancreatic Cancer.

Background: In pancreatic cancer, methods to predict early recurrence (ER) and identify patients at increased risk of relapse are urgently required.

Purpose: To develop a radiomic nomogram based on MR radiomics to stratify patients preoperatively and potentially improve clinical practice.

Study Type: Retrospective.

Pancreatic neuroendocrine tumor: prediction of the tumor grade using magnetic resonance imaging findings and texture analysis with 3-T magnetic resonance.

Purpose: The purpose of this study was to evaluate the performance of magnetic resonance imaging (MRI) findings and texture parameters for prediction of the histopathologic grade of pancreatic neuroendocrine tumors (PNETs) with 3-T magnetic resonance.

Patients And Methods: PNETs are classified into Grade 1 (G1), Grade 2 (G2), and Grade 3 (G3) tumors based on the Ki-67 proliferation index and the mitotic activity. A total of 77 patients with pathologically confirmed PNETs met the inclusion criteria.

A neural network based computational model to predict the output power of different types of photovoltaic cells.

In this article, we introduced an artificial neural network (ANN) based computational model to predict the output power of three types of photovoltaic cells, mono-crystalline (mono-), multi-crystalline (multi-), and amorphous (amor-) crystalline. The prediction results are very close to the experimental data, and were also influenced by numbers of hidden neurons. The order of the solar generation power output influenced by the external conditions from smallest to biggest is: multi-, mono-, and amor- crystalline silicon cells.

Gd-EOB-DTPA-enhanced magnetic resonance imaging for bile duct intraductal papillary mucinous neoplasms.

Aim: To investigate gadolinium-ethoxybenzyl-diethylenetriamine-pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) of intraductal papillary mucinous neoplasms of the bile duct (IPMN-B).

Methods: The imaging findings of five cases of IPMN-B which were pathologically confirmed at our hospital between March 2012 and May 2013 were retrospectively analyzed. Three of these cases were diagnosed by duodenal endoscopy and biopsy pathology, and two cases were diagnosed by surgical pathology.

[Value of diffusion-weighted MR imaging in diagnosis of acute rejection after renal transplantation].

Objective: To evaluate the feasibility of MR diffusion-weighted imaging (DWI) in diagnosis of acute rejection after renal transplantation.

Methods: Sixty-nine patients who underwent renal transplantation were enrolled in the study. According to the clinical features and renal biopsy, 26 patients were designated in rejection group and 43 in non-rejection group.

[Evaluation of kidney oxygen bioavailability in acute renal failure by blood oxygen level dependent magnetic resonance imaging].

Objective: To assess the kidney oxygen bioavailability in acute renal failure using blood oxygen level dependent (BOLD) magnetic resonance (MR) imaging.

Methods: Twenty-one patients with acute renal failure, including 18 patients with oliguric renal failure, 1 nonoliguric acute renal failure and 2 functional renal failure were enrolled in the study; 20 healthy subjects served as controls. All subjects received renal functional MR examination.

Diagnostic value of the fluoroscopic triggering 3D LAVA technique for primary liver cancer.

Background: Primary liver cancer (PLC) is one of the common malignant tumors. Liver acquisition with acceleration volume acquisition (LAVA), which allows simultaneous dynamic enhancement of the hepatic parenchyma and vasculature imaging, is of great help in the diagnosis of PLC. This study aimed to evaluate application of the fluoroscopic triggering 3D LAVA technique in the imaging of PLC and liver vasculature.

[Correlation between pathology and imaging characteristics of hepatic agiomyolipoma].

Objective: To discuss CT and MRI characteristics of hepatic angiomyolipoma based on pathological findings.

Methods: The CT and MRI appearances with related pathohistological subtypes of 11 hepatic angiomyolipomas from 10 patients were retrospectively analyzed.

Result: Ten patients with hepatic angiomyolipomas were subcategorized into lipomatous (3 cases), angiomatous (1 case), myomatous (1 case) and mixed (5 cases) subtypes.

[Imaging diagnosis of abdominal solitary fibrous tumor].

Objective: To investigate the imaging characteristics of abdominal solitary fibrous tumor (SFT) with its pathological features.

Methods: Six cases of abdominal solitary fibrous tumors were studied using X-ray, CT, MRI examination as well as histopathological and immunohistochemical techniques.

Result: Contrast enhanced CT showed early intense enhancement as a result of the rich vascularization.

[Correlation between pathology and image characteristics of retroperitoneal liposarcoma].

Objective: To investigate the correlation between the pathological and image features of different subtypes of retroperitoneal liposarcoma.

Methods: Pathological and image characteristics of 21 retroperitoneal liposarcomas were retrospectively analyzed comparing their different histopathological subtypes.

Results: This series consisted of 11 well-differentiated, 4 myxoid, 3 round-cell, 2 pleomorphic and 1 dedifferentiated liposarcoma.