Publications by authors named "Junjian Huang"

41 Publications

Magnetic porous biochar with high specific surface area derived from microwave-assisted hydrothermal and pyrolysis treatments of water hyacinth for Cr(Ⅵ) and tetracycline adsorption from water.

Bioresour Technol 2021 Nov 31;340:125692. Epub 2021 Jul 31.

School of Resources and Environment, Northeast Agricultural University, Harbin 150030, China. Electronic address:

Magnetic porous water hyacinth-derived biochar (MPBC) was synthesized via two-step Microwave (MW)-assisted processes. Characterization results not only testified high specific surface area (2097.50 m/g) of the MPBC assisted by MW-assisted pyrolysis, but also revealed its favorable magnetism derived from MW-assisted hydrothermal process. The MPBC possessed pH-dependent monolayer adsorption capacities of 202.61 and 202.62 mg/g for Cr(VI) and TC with quick attainments of uptake equilibrium within 150 and 200 min. Moreover, the Cr(VI) and TC uptake were substantially steady under the interference from multifarious co-existing ions with slight decline after three adsorption-desorption cycles. Furthermore, the MPBC was demonstrated to achieve excellent Cr(VI) binding primarily through complexation, electrostatic interaction, reduction and ion exchange, while presenting outstanding TC removal via pore filling, π-π stacking, hydrogen bonding force, electrostatic interaction and complexation. All these findings suggested the MPBC synthesized by MW-assisted processes as an excellent adsorbent for purification of Cr(VI) and TC-contaminated water.
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http://dx.doi.org/10.1016/j.biortech.2021.125692DOI Listing
November 2021

External Validation of the Renal Ablation-Specific (MC)2 Risk Scoring System in Predicting Complications from Percutaneous Renal Cryoablation.

Cardiovasc Intervent Radiol 2021 Jul 29. Epub 2021 Jul 29.

Division of Vascular and Interventional Radiology, Department of Radiology, University of Alabama at Birmingham, 619 19th St S., Birmingham, AL, 35249, USA.

Purpose: The (MC)2 score is a renal ablation-specific risk scoring system to predict major complications from percutaneous renal cryoablation (PRCA). However, it is untested in an external population of patients. The purpose of this study is to validate the ability of the (MC)2 score to predict major complications after PRCA in an external population.

Materials And Methods: Retrospective review of patients who underwent PRCA from 2004 to 2019. Patient demographics, medical histories, and tumor characteristics were collected. The (MC)2 score was calculated and patients were assigned to low risk (< 5), moderate risk (5-8) and high-risk (> 8) groups. Complications were recorded. Major complications were classified according to CIRSE guidelines.

Results: Two hundred and one patients [M = 116; F = 85; median age = 65 (range 27-90)] met inclusion criteria. Eleven patients (5.5%) developed major complications and 50 patients (24.9%) developed minor complications. Of patients with major complications, mean tumor diameter was 39 mm (± 10.4), seven patients (63.6%) had a central tumor, four patients (36.4%) had complicated diabetes, and one patient (9.1%) had a prior MI. Major complication rates were 2.1%, 14%, and 14.3% in the (MC)2 low risk, moderate risk, and high risk groups, respectively. The mean (MC)2 score for patients with major complications [6.2 (± 2.4)] was higher than the mean score for patients with minor complications [4.7 (± 2.4) (p = 0.07)] and no complications [3.9 (± 1.9) (p < 0.01)]. The area under the ROC curve to predict major complications was 0.78.

Conclusion: The (MC)2 risk scoring system appropriately identifies patients at risk for major complications from PRCA in this external patient population.
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http://dx.doi.org/10.1007/s00270-021-02929-8DOI Listing
July 2021

Percutaneous Retrieval of Venous Bullet Embolism.

J Endovasc Ther 2021 Jul 2:15266028211028216. Epub 2021 Jul 2.

Department of Radiology, Advocate Illinois Masonic Medical Center, Chicago, IL, USA.

Purpose: Bullet fragment embolization is a rare but potentially fatal complication of traumatic gunshot injury. Herein, we present a case of a patient who demonstrated migration of a bullet fragment from the lower chest into the left common iliac vein. Continual identification of foreign bodies on trauma imaging is of the utmost importance. Identifying and treating this rare entity can help vascular interventionalists improve patient outcomes.

Case Report: Our patient presented to the emergency room after sustaining 2 gunshot wounds to the right axilla. Initial imaging demonstrated 2 bullet fragments: one in the right axilla and another in the lower chest overlying the heart. A subsequent trauma computed tomography was performed 13 minutes later and demonstrated a bullet fragment in the left common iliac vein, which had embolized from the original location in the lower chest. Interventional radiology was consulted to perform foreign body removal. A transcutaneous approach was utilized, and the bullet embolus was removed successfully without complication.

Conclusion: Bullet fragment embolization is a rare entity with complications ranging from critical limb ischemia to venous thrombosis or obstruction. This case helps to demonstrate the importance of identifying and accounting for bullet fragments in gunshot trauma imaging.
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http://dx.doi.org/10.1177/15266028211028216DOI Listing
July 2021

The Impact of Physician Exposure to Organized Political Advocacy in the Society of Interventional Radiology.

J Vasc Interv Radiol 2021 04 10;32(4):616-617. Epub 2021 Jan 10.

Division of Interventional Radiology, Department of Radiology, Massachusetts General Hospital, Boston, MA 02114.

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http://dx.doi.org/10.1016/j.jvir.2020.11.004DOI Listing
April 2021

An Analysis of Internet Searches Performed on a Hospital System Homepage to Assess Search Patterns and Traffic Generated by Radiology-specific Terms.

Curr Probl Diagn Radiol 2021 Nov-Dec;50(6):784-786. Epub 2020 Nov 16.

Department of Radiology, University of Alabama at Birmingham, Birmingham, AL. Electronic address:

Objective: To understand the utilization of the search engine within our hospital system's homepage, stratifying the searches into physician specialty, procedures or therapies, patient conditions, and logistical queries, with a specific focus on radiology-specific terms as a baseline to guide future interventions.

Methods: The top 1000 most searched terms entered into the medical system's homepage between January 1, 2017 and February 28, 2018 were collected. Related or similar terms were combined for analysis.

Results: During the study period, there were 121,071 unique searches on the center's website, and the top 1000 most searched terms combined for 65,011 searches. The most searched category was logistical queries (n = 29,667), followed by searches for conditions (n = 14,033), specialties (n = 3083), and procedures or therapies (n = 2252). Within the top 1000 most searched terms, radiology-specific searches accounted for 96 searches. These terms were all mammography-related.

Conclusion: Radiology as a specialty and radiology-specific terms were not frequently searched for by patients when compared with other specialties. Mammography-related terms were the only radiologic subspecialty items within the top 1000 search terms. Overall, patients searched more for conditions than they did for specialties or therapies. These findings could be a representation of the general public's lack of awareness regarding the specialty.
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http://dx.doi.org/10.1067/j.cpradiol.2020.10.015DOI Listing
October 2021

Medicare Physician Fee Schedule 2020: IR Practice Economic Health and Strategies to Mitigate the Undervaluing of IR Services.

J Vasc Interv Radiol 2020 10 16;31(10):1726-1727. Epub 2020 Sep 16.

Department of Radiology, SUNY Upstate University Hospital, Syracuse, New York.

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http://dx.doi.org/10.1016/j.jvir.2020.06.024DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7492832PMC
October 2020

Xenophobia in America in the Age of Coronavirus and Beyond.

J Vasc Interv Radiol 2020 07 29;31(7):1187-1188. Epub 2020 Apr 29.

Department of Radiology, Massachusetts General Hospital, 55 Fruit St., Boston, MA, 02114.

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http://dx.doi.org/10.1016/j.jvir.2020.04.020DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7188638PMC
July 2020

The Italian Renaissance - spacer style.

J Neurointerv Surg 2020 07 26;12(7):678-679. Epub 2020 May 26.

Radiology, Montefiore Medical Center, Bronx, New York, USA.

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http://dx.doi.org/10.1136/neurintsurg-2020-016082DOI Listing
July 2020

Mediastinal Drain Placement: A CT-Guided Para-Aortic Approach.

J Vasc Interv Radiol 2020 Mar;31(3):462-463

Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts.

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http://dx.doi.org/10.1016/j.jvir.2019.11.024DOI Listing
March 2020

A smoothing neural network for minimization l-l in sparse signal reconstruction with measurement noises.

Neural Netw 2020 Feb 18;122:40-53. Epub 2019 Oct 18.

Department of Electrical and Computer Engineering, Texas A & M University, College Station, TX77843, USA.

This paper investigates a smoothing neural network (SNN) to solve a robust sparse signal reconstruction in compressed sensing (CS), where the objective function is nonsmooth l-norm and the feasible set satisfies an inequality of l-norm 2≥p≥1 which is used for measuring residual errors. With a smoothing approximate technique, the non-smooth and non-Lipschitz continuous issues of the l-norm and the gradient of l-norm can be solved efficiently. We propose a SNN which is modeled by a differential equation and give its circuit implementation. In this case, we prove the proposed SNN converges to the optimal of considered problem. Simulation results are discussed to demonstrate the efficiency of the proposed algorithm.
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http://dx.doi.org/10.1016/j.neunet.2019.10.006DOI Listing
February 2020

PES1 is a critical component of telomerase assembly and regulates cellular senescence.

Sci Adv 2019 05 15;5(5):eaav1090. Epub 2019 May 15.

Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Collaborative Innovation Center for Cancer Medicine, Beijing 100850, China.

Telomerase defers the onset of telomere shortening and cellular senescence by adding telomeric repeat DNA to chromosome ends, and its activation contributes to carcinogenesis. Telomerase minimally consists of the telomerase reverse transcriptase (TERT) and the telomerase RNA (TR). However, how telomerase assembles is largely unknown. Here, we demonstrate that PES1 (Pescadillo), a protein overexpressed in many cancers, forms a complex with TERT and TR through direct interaction with TERT, regulating telomerase activity, telomere length maintenance, and senescence. PES1 does not interact with the previously reported telomerase components Reptin, Pontin, p23, and Hsp90. PES1 facilitates telomerase assembly by promoting direct interaction between TERT and TR without affecting TERT and TR levels. PES1 expression correlates positively with telomerase activity and negatively with senescence in patients with breast cancer. Thus, we identify a previously unknown telomerase complex, and targeting PES1 may open a new avenue for cancer therapy.
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http://dx.doi.org/10.1126/sciadv.aav1090DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6520020PMC
May 2019

Too Scared to Teach? The Unintended Impact of 360-Degree Feedback on Resident Education.

Curr Probl Diagn Radiol 2020 Jul - Aug;49(4):239-242. Epub 2019 Apr 6.

Department of Radiology, Pennsylvania Hospital, University of Pennsylvania Health System, University of Pennsylvania, Philadelphia, PA.

Rationale And Objectives: In 2000, the Accreditation Council for Graduate Medical Education created a 360-degree feedback toolkit intended to provide residents with frequent feedback from both their peers and attending supervisors to address any deficiencies prior to graduation. At our institution, resident evaluations of faculty directly impact faculty pay and promotion. We aimed to evaluate attending physician's attitudes toward 360-degree feedback systems, specifically related to resident performance.

Materials And Methods: Attending radiologists in a single-institution radiology residency program answered a 10-question survey regarding their views on 360-degree feedback systems. Fisher's exact tests were used to compare proportions.

Results: Seventeen of 24 (71%) attending physicians completed the survey. Of the respondents, 71% indicated that resident evaluations of attendings had an impact on job promotion and/or salaries; 65% indicated an impact on teaching quality; and 41% indicated an impact on their job security. All (100%) attendings indicated they felt comfortable giving positive written resident feedback, while 65% felt comfortable giving negative written feedback (P = 0.018). All (100%) attendings indicated they were comfortable giving positive verbal resident feedback, while 71% were comfortable giving negative verbal feedback (P = 0.044).

Conclusions: Attendings were less comfortable giving negative written and verbal resident feedback than positive feedback. Most attendings believed that negative resident evaluations of attendings had an impact on their pay and promotion. Attendings may be more willing to provide honest feedback to residents in a 360-degree system that does not link resident evaluations to faculty pay and promotion.
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http://dx.doi.org/10.1067/j.cpradiol.2019.04.006DOI Listing
March 2021

Effects of State-Dependent Impulses on Robust Exponential Stability of Quaternion-Valued Neural Networks Under Parametric Uncertainty.

IEEE Trans Neural Netw Learn Syst 2019 Jul 27;30(7):2197-2211. Epub 2018 Nov 27.

This paper addresses the state-dependent impulsive effects on robust exponential stability of quaternion-valued neural networks (QVNNs) with parametric uncertainties. In view of the noncommutativity of quaternion multiplication, we have to separate the concerned quaternion-valued models into four real-valued parts. Then, several assumptions ensuring every solution of the separated state-dependent impulsive neural networks intersects each of the discontinuous surface exactly once are proposed. In the meantime, by applying the B -equivalent method, the addressed state-dependent impulsive models are reduced to fixed-time ones, and the latter can be regarded as the comparative systems of the former. For the subsequent analysis, we proposed a novel norm inequality of block matrix, which can be utilized to analyze the same stability properties of the separated state-dependent impulsive models and the reduced ones efficaciously. Afterward, several sufficient conditions are well presented to guarantee the robust exponential stability of the origin of the considered models; it is worth mentioning that two cases of addressed models are analyzed concretely, that is, models with exponential stable continuous subsystems and destabilizing impulses, and models with unstable continuous subsystems and stabilizing impulses. In addition, an application case corresponding to the stability problem of models with unstable continuous subsystems and stabilizing impulses for state-dependent impulse control to robust exponential synchronization of QVNNs is considered summarily. Finally, some numerical examples are proffered to illustrate the effectiveness and correctness of the obtained results.
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http://dx.doi.org/10.1109/TNNLS.2018.2877152DOI Listing
July 2019

Controllable and facile synthesis of CsPbBr-CsPbBr perovskite composites in pure polar solvent.

J Colloid Interface Sci 2019 Mar 13;537:384-388. Epub 2018 Nov 13.

Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China. Electronic address:

Here, we present a single atomic supersaturated recrystallization method to synthesize the green-emitting CsPbBr-CsPbBr perovskite composites in solid state with the highest PLQY of 40.8% in pure polar solvent. The component, morphology, and optical properties of the microcrystals can be tuned by varying growth time, the content of ammonium bromide, and bromine source. The developed method provides a new route to large-scale synthesize high quality perovskite composites emitters for light-emitting diodes.
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http://dx.doi.org/10.1016/j.jcis.2018.11.041DOI Listing
March 2019

Radiology and Political Advocacy: Characterizing Radiology Political Action Committee Donors.

Curr Probl Diagn Radiol 2019 Sep - Oct;48(5):448-451. Epub 2018 Sep 1.

Miami Cardiac and Vascular Institute, Miami, FL.

Purpose: To identify factors associated with radiologist donations to radiology political action committees (PACs).

Materials And Methods: A survey was emailed to 4474 radiologists. Factors investigated include demographics, donor history, and knowledge of the federal advocacy process. Logistic regression analysis was performed to determine factors associated with donor behavior.

Results: In total, 336 radiologists completed the survey. Overall, 152 (46.2%) radiologists reported donating to a radiology PAC in the past year. Those with annual personal income ≥$450,000 had greater odds to donate than those with annual personal income <$450,000 (odds ratio [OR]: 2.58, 95% confidence interval [CI]: 1.47-4.52; p < 0.001). More than three-quarters (77.2%, n = 254) reported limited or no knowledge of the federal advocacy process. Those with good or excellent knowledge of the federal advocacy process had greater odds to donate than those with no knowledge (OR: 2.63, 95% CI: 1.01-6.84; p = 0.047). Those with awareness that membership dues and foundation funds do not fund Society of Interventional Radiology Political Action Committee had greater odds to donate (OR: 3.54, 95% CI: 2.00, 6.25; p < 0.001).

Conclusions: Radiologists' personal income and knowledge of the federal advocacy process were identified as key factors influencing donations. PAC donation may benefit from raising awareness of the federal advocacy process, as well as from targeted fundraising strategies aimed at higher earners.
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http://dx.doi.org/10.1067/j.cpradiol.2018.08.009DOI Listing
January 2020

Political Action Committee Funding: Where IR Lags Behind the Competition.

J Vasc Interv Radiol 2018 09;29(9):1342-1343

Department of Radiology, Pennsylvania Hospital of the University of Pennsylvania Health System, Philadelphia, Pennsylvania.

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http://dx.doi.org/10.1016/j.jvir.2018.04.024DOI Listing
September 2018

Long noncoding RNA SNHG16 contributes to the development of bladder cancer via regulating miR-98/STAT3/Wnt/β-catenin pathway axis.

J Cell Biochem 2018 11 21;119(11):9408-9418. Epub 2018 Aug 21.

Department of Minimally Invasive Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China.

This study aimed to investigate the role and the possible mechanism of the long noncoding small nucleolar RNA host gene 16 (SNHG16) in bladder cancer development. The expression of SNHG16 in the tumor tissues and plasma of patients with bladder cancer as well as bladder cancer cell lines was detected. T24 cells were then transfected with sh-SNHG16 to further investigate the effects of suppression of SNHG16 on T24 cell proliferation, apoptosis, migration, and invasion. In addition, the regulatory relationships between SNHG16 and miR-98 as well as the target of miR-98 were explored. Besides, the association between SNHG16 and the Wnt/β-catenin pathway was further elucidated. The SNHG16 expression was upregulated in the tumor tissues and plasma of patients with bladder cancer, as well as bladder cancer cells. Suppression of SNHG16 inhibited T24 cell proliferation, promoted apoptosis, and suppressed migration and invasion in vitro. In addition, SNHG16 negatively regulated miR-98 expression and regulated the malignant behaviors of T24 cells through sponging miR-98. Moreover, signal transducer and activator of transcription 3 (STAT3) was identified as a functional target of miR-98, and miR-98 regulated the malignant behaviors of bladder cancer cells by targeting STAT3. Besides, suppression of SNHG16 inhibited the activation of the Wnt/β-catenin pathway, which was further regulated by miR-98 and STAT3, indicating that the effects of SNHG16/miR-98/STAT3 on T24 cells were achieved through the Wnt/β-catenin pathway. Our findings reveal that long noncoding RNAs SNHG16 is upregulated in bladder cancer and contributes to the development of bladder cancer possibly via regulating the miR-98/STAT3/Wnt/β-catenin pathway axis. The SNHG16/miR-98/STAT3/Wnt/β-catenin pathway axis may provide a new strategy for bladder cancer treatment.
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http://dx.doi.org/10.1002/jcb.27257DOI Listing
November 2018

Global Mittag-Leffler stability and synchronization analysis of fractional-order quaternion-valued neural networks with linear threshold neurons.

Neural Netw 2018 Sep 4;105:88-103. Epub 2018 May 4.

Department of Computer Science, Chongqing University of Education, Chongqing 400067, PR China. Electronic address:

This paper talks about the stability and synchronization problems of fractional-order quaternion-valued neural networks (FQVNNs) with linear threshold neurons. On account of the non-commutativity of quaternion multiplication resulting from Hamilton rules, the FQVNN models are separated into four real-valued neural network (RVNN) models. Consequently, the dynamic analysis of FQVNNs can be realized by investigating the real-valued ones. Based on the method of M-matrix, the existence and uniqueness of the equilibrium point of the FQVNNs are obtained without detailed proof. Afterwards, several sufficient criteria ensuring the global Mittag-Leffler stability for the unique equilibrium point of the FQVNNs are derived by applying the Lyapunov direct method, the theory of fractional differential equation, the theory of matrix eigenvalue, and some inequality techniques. In the meanwhile, global Mittag-Leffler synchronization for the drive-response models of the addressed FQVNNs are investigated explicitly. Finally, simulation examples are designed to verify the feasibility and availability of the theoretical results.
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http://dx.doi.org/10.1016/j.neunet.2018.04.015DOI Listing
September 2018

Monodisperse and brightly luminescent CsPbBr/CsPbBr perovskite composite nanocrystals.

Nanoscale 2018 May;10(21):9840-9844

Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China.

The microscale composite structure strategy of embedding CsPbBr3 nanocrystals (NCs) in the microscale Cs4PbBr6 matrix (CPB113/CPB416) has successfully demonstrated its ability to resolve the fluorescence quenching of perovskite NCs in the solid agglomeration state due to the loss of quantum confinement. Unfortunately, the controllable synthesis of monodisperse nanoscale composites with bright emission in the solid state remains a great challenge. Here, we present for the first time a novel supersaturated recrystallization process to controllably synthesize monodisperse CPB113/CPB416 composite NCs with bright emission in the solid form, where CsPbBr3 NCs were uniformly embedded in the nano hexagonal Cs4PbBr6 matrix. The existence of 2-methylimidazole (MeIm) not only can control the composition rate of CsPbBr3 to Cs4PbBr6, the size and dispersity of CsPbBr3 in the composite NCs but can also help controllably obtain the monodisperse and hexagonal Cs4PbBr6 matrix. The as-prepared composite structure can effectively prevent CsPbBr3 fluorescence quenching and make the composite NCs have a high photoluminescence quantum yield (PLQY) of 83%. In addition, we obtained tunable blue to red emitting composite NCs by varying the halide salts.
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http://dx.doi.org/10.1039/c8nr01266kDOI Listing
May 2018

Intraosseous pseudomeningocele of the mobile spine: a case report and review of the literature.

Eur Spine J 2018 07 31;27(Suppl 3):472-476. Epub 2018 Jan 31.

Department of Orthopaedic Surgery, University of Pennsylvania, 3737 Market Street, 6th Floor, Philadelphia, PA, 19104, USA.

Background: Pseudomeningoceles most commonly occur due to prior trauma or surgery and are often located in the posterior paraspinous tissues. Here, we report a case of an intraosseous pseudomeningocele that mimicked an intra-osseous T2 hyperintense lesion in the L1 vertebral body.

Case Description: A 64-year-old male presented with back, left lateral thigh and left knee pain lasting several months. He had no prior history of trauma or surgery. Radiographs of the lumbar spine showed mild levoscoliotic curvature of the lumbar spine, Baastrup's changes between the spinous processes, multilevel degenerative disc disease and facet arthropathy. Magnetic resonance imaging (MRI) of the lumbar spine performed without intravenous contrast showed severe spinal canal stenosis from L1-L2 to L3-L4 and moderate spinal canal stenosis at L4-L5. MRI also showed a 2.5-cm T2 hyperintense lesion involving the posterior aspect of the L1 vertebral body, with questionable contiguity with cerebrospinal fluid. Computed tomography (CT) myelogram was performed instead of biopsy. CT myelogram showed contiguity of the lesion with the intrathecal contrast and a rent in the posterior longitudinal ligament and anterior dura consistent with an intraosseous pseudomeningocele. The patient opted for non-operative management of the pseudomeningocele and his lumbar stenosis due to medical comorbidities.

Conclusions: This case illustrates a rare case of an intra-osseous pseudomeningocele and highlights the importance of CT myelogram for diagnosis.
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http://dx.doi.org/10.1007/s00586-018-5498-zDOI Listing
July 2018

Smoothing inertial projection neural network for minimization L in sparse signal reconstruction.

Neural Netw 2018 Mar 20;99:31-41. Epub 2017 Dec 20.

Key laboratory of Machine Perception and Children's Intelligence Development, Chongqing University of Education, Chongqing, 400067, China.

In this paper, we investigate a more general sparse signal recovery minimization model and a smoothing neural network optimal method for compress sensing problem, where the objective function is a L minimization model which includes nonsmooth, nonconvex, and non-Lipschitz quasi-norm L norms 1≥p>0 and nonsmooth L norms 2≥p>1, and its feasible set is a closed convex subset of R. Firstly, under the restricted isometry property (RIP) condition, the uniqueness of solution for the minimization model with a given sparsity s is obtained through the theoretical analysis. With a mild condition, we get that the larger of the q, the more effective of the sparse recovery model under sensing matrix satisfies RIP conditions at fixed p. Secondly, using a smoothing approximate method, we propose the smoothing inertial projection neural network (SIPNN) algorithm for solving the proposed general model. Under certain conditions, the proposed algorithm can converge to a stationary point. Finally, convergence behavior and successful recover performance experiments and a comparison experiment confirm the effectiveness of the proposed SIPNN algorithm.
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http://dx.doi.org/10.1016/j.neunet.2017.12.008DOI Listing
March 2018

Endovascular retrieval of Greenfield IVC filters 13 and 19 years post placement without major complication.

J Radiol Case Rep 2017 Jun 30;11(6):15-25. Epub 2017 Jun 30.

Department of Radiology, University of Colorado-Denver, Denver, USA.

Inferior vena cava (IVC) filters were first introduced in 1967 by Kazi Mobin-Uddin and later improved by Lazar Greenfield in the 1980s becoming a major component of catastrophic pulmonary embolism prevention. Nevertheless, filters are not entirely harmless. The long term risks include caval thrombosis, visceral penetration, and filters can serve as a nidus for infection. Filter retrieval is often complicated by intimal hyperplasia especially with increased indwelling time. Historically, Greenfield filters in place for longer than 3 weeks were considered permanent due to the risks of retrieval. Herein we present 2 cases of successful retrieval of Greenfield filters 13 and 19 years post implantation.
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http://dx.doi.org/10.3941/jrcr.v11i6.3031DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5743144PMC
June 2017

In Pursuit of Fellowship: Results From a 2016 Survey of US Trainees.

Curr Probl Diagn Radiol 2019 Jan 10;48(1):22-26. Epub 2017 Nov 10.

Pennsylvania Hospital, University of Pennsylvania Healthy System, Philadelphia, PA.

Purpose: The purpose of this study was to gauge radiology trainee perceptions regarding the fellowship selection process and survey their perceived level of preparedness and desire for a fellowship-oriented lecture.

Methods: A survey, approved by Association of Program Coordinators in Radiology (APCR) was distributed via e-mail to all APCR members for distribution to their residents.

Results: A total of 98.6% (n = 261) of residents plan to pursue a fellowship. The most popular fellowships are interventional radiology, body, musculoskeletal, and Neuro. For fellowship information, residents believe that fellowship directors in their field of intent were the most reliable (76%), followed by fellows (65%). Only approximately 50% of residents felt somewhat strongly that they were preparing for their fellowship application correctly. Lastly, 44% of residents (n = 94) replied extremely likely to attend a lecture series given by fellowship directors, and 36% (n = 77) said somewhat likely.

Conclusion: This survey demonstrates that most trainees plan to pursue fellowship training. Residents ranked certain resources as more important in fellowship selection, such as fellowship directors and fellows. Lastly, there is a high interest in a lecture series that would bring together fellowship directors and residents that are interested in that particular fellowship.
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http://dx.doi.org/10.1067/j.cpradiol.2017.10.013DOI Listing
January 2019

Highly stable CsPbBr quantum dots coated with alkyl phosphate for white light-emitting diodes.

Nanoscale 2017 Oct;9(40):15286-15290

Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, Guangdong 510275, China.

Inorganic halide perovskite quantum dots (QDs) suffer from problems related to poor water stability and poor thermal stability. Here we developed a simple strategy to synthesize alkyl phosphate (TDPA) coated CsPbBr QDs by using 1-tetradecylphosphonic acid both as the ligand for the CsPbBr QDs and as the precursor for the formation of alkyl phosphate. These QDs not only retain a high photoluminescence quantum yield (PLQY, 68%) and narrow band emission (FHWM ∼ 22 nm) but also exhibit high stability against water and heat. The relative PL intensity of the QDs was maintained at 75% or 59% after being dispersed in water for 5 h or heated to 375 K (100 °C), respectively. Finally, white light-emitting diodes (WLEDs) with a high luminous efficiency of 63 lm W and a wide color gamut (122% of NTSC) were fabricated by using green-emitting CsPbBr/TDPA QDs and red-emitting KSiF:Mn phosphors as color converters. The luminous efficiency of the WLEDs remained at 90% after working under a relative humidity (RH) of 60% for 15 h, thereby showing promise for use as backlight devices in LCDs.
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http://dx.doi.org/10.1039/c7nr04179aDOI Listing
October 2017

The EGFR/miR-338-3p/EYA2 axis controls breast tumor growth and lung metastasis.

Cell Death Dis 2017 07 13;8(7):e2928. Epub 2017 Jul 13.

Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Collaborative Innovation Center for Cancer Medicine, Beijing, China.

Dysregulation of the epidermal growth factor receptor (EGFR) promotes cancer cell growth, invasion and metastasis. However, its relevant downstream effectors are still limited. Here, we show that EGFR promotes breast tumor growth and metastasis by downregulating the tumor suppressor micoRNA-338-3p (miR-338-3p) and activating the EYA2 (EYA transcriptional coactivator and phosphatase 2) oncoprotein. EGFR represses miR-338-3p expression largely through HIF1α transcription factor. miR-338-3p inhibits EYA2 expression by binding to the 3'-untranslated region of EYA2. EGFR increases EYA2 expression via HIF1α repression of miR-338-3p. Through the miR-338-3p/EYA2 pathway, EGFR increases breast cancer cell growth, epithelial-to-mesenchymal transition, migration, invasion and lung metastasis in vitro and in a allograft tumor mouse model in vivo. In breast cancer patients, miR-338-3p expression negatively correlates with the expression of EGFR and EYA2, EGFR status positively associates with EYA2 expression, and miR-338-3p and EYA2 predict breast cancer lung metastasis when expressed in primary breast cancers. These data suggest that the miR-338-3p/EYA2 axis contributes to EGFR-mediated tumor growth and lung metastasis and that miR-338-3p activation or EYA2 inhibition or combination therapy targeting EGFR/miR-338-3p/EYA2 axis may be a promising way to treat patients with metastatic cancer.
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http://dx.doi.org/10.1038/cddis.2017.325DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5550870PMC
July 2017

Percutaneous Cryoablation of the Horseshoe Kidney: An Initial Experience.

J Vasc Interv Radiol 2017 Apr;28(4):498-501

Departments of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN 55902.

Between June 2006 and January 2016, 6 renal cryoablation procedures were performed in 5 patients with horseshoe kidneys. Renal cell carcinoma (RCC) accounted for 5 of the tumors, and the sixth was a carcinoid tumor. All 6 procedures were technically successful. The patient with the carcinoid tumor developed local tumor progression 38 months after ablation. Technique effectiveness was achieved in all 5 patients with RCC. Two complications occurred: obstructive hematuria and transient inguinal neuralgia after ablation. In this small initial experience, percutaneous cryoablation appears feasible in treatment of primary tumors in horseshoe kidneys.
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http://dx.doi.org/10.1016/j.jvir.2016.10.026DOI Listing
April 2017

Aortic air embolus following pulmonary tumor radiofrequency ablation.

Radiol Case Rep 2016 Dec 4;11(4):341-343. Epub 2016 Oct 4.

Department of Diagnostic Radiology, Advocate Illinois Masonic Medical Center, 836 W Wellington Ave, Chicago, IL 60657, USA.

Aortic air embolism following a computed tomography (CT) guided percutaneous transthoracic procedure is a rare occurrence, but one that can have dire consequences. We present a case of a 48-year old female diagnosed with aortic air embolism during percutaneous radiofrequency ablation of a pulmonary mass. A large amount of intra-aortic air can be seen on the CT images just before the patient suffered acute cardiac arrest. Although this is a rare occurrence, recognition and management of this complication is important for physicians who perform any percutaneous transthoracic procedures.
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http://dx.doi.org/10.1016/j.radcr.2016.05.020DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5128370PMC
December 2016

Popliteal artery embolism of bullet after abdominal gunshot wound.

Radiol Case Rep 2016 Dec 2;11(4):282-286. Epub 2016 Nov 2.

Department of Radiology, Advocate Illinois Masonic Medical Center, 836 W. Wellington Ave, Chicago, IL 60657, USA.

Bullet embolism to the peripheral arterial system is a rare phenomenon which frequently results in misdiagnosis due to lack of early symptoms. Embolisms can go to either arterial or venous systems with common sites of injury including the left ventricle, pulmonary vein, thoracic and abdominal aorta and peripheral arteries. Herein we present a case of a 19 year old patient with multiple gunshot wounds to the torso with a bullet embolism to the left popliteal artery necessitating embolectomy. This subsequently led to diagnosis and repair of an abdominal aortic psuedoaneurysm not clearly evident on initial imaging.
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http://dx.doi.org/10.1016/j.radcr.2016.04.011DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5128195PMC
December 2016

Core-decomposition-facilitated fabrication of hollow rare-earth silicate nanowalnuts from core-shell structures via the Kirkendall effect.

Nanoscale 2015 Aug 29;7(32):13715-22. Epub 2015 Jul 29.

Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, Guangdong 510275, China.

Hollow micro-/nanostructures have been widely applied in the fields of lithium ion batteries, catalysis, biosensing, biomedicine, and so forth. The Kirkendall effect, which involves a non-equilibrium mutual diffusion process, is one of many important fabrication strategies for the formation of hollow nanomaterials. Accordingly, full understanding of the interdiffusion process at the nanoscale is very important for the development of novel multifunctional hollow materials. In this work, hollow Y2SiO5 nanowalnuts have been fabricated from the conversion of [email protected] core-shell nanospheres via the Kirkendall effect. More importantly, it was found that in the conversion process, the decomposition of YOHCO3 core imposes on the formation of the Y2SiO5 interlayer by facilitating the initial nucleation of the Kirkendall nanovoids and accelerating the interfacial diffusion of [email protected] [email protected] The simple concept developed herein can be employed as a general Kirkendall effect strategy without the assistance of any catalytically active Pt nanocrystals or gold motion for future fabrication of novel hollow nanostructures. Moreover, the photoluminescence properties of rare-earth ion doped hollow Y2SiO5 nanoparticles are researched.
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http://dx.doi.org/10.1039/c5nr02684aDOI Listing
August 2015

Robust stability of stochastic fuzzy delayed neural networks with impulsive time window.

Neural Netw 2015 Jul 27;67:84-91. Epub 2015 Mar 27.

Department of Computer Science, Chongqing University of Education, Chongqing 400067, China. Electronic address:

The urgent problem of impulsive moments which cannot be determined in advance brings new challenges beyond the conventional impulsive systems theory. In order to solve this problem, the novel concept of impulsive time window is proposed in this paper. And the stability problem of stochastic fuzzy uncertain delayed neural networks with impulsive time window is investigated. By combining the discretized Lyapunov function approach with mathematical induction method, several novel and easy-to-check sufficient conditions concerning the impulsive time window are derived to ensure that the model considered here is exponentially stable in mean square. Numerical simulations are presented to further demonstrate the effectiveness of the proposed stability criterion.
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http://dx.doi.org/10.1016/j.neunet.2015.03.010DOI Listing
July 2015
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