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1.
J Imaging Inform Med ; 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38831189

RESUMEN

A radiology report plays a crucial role in guiding patient treatment, but writing these reports is a time-consuming task that demands a radiologist's expertise. In response to this challenge, researchers in the subfields of artificial intelligence for healthcare have explored techniques for automatically interpreting radiographic images and generating free-text reports, while much of the research on medical report creation has focused on image captioning methods without adequately addressing particular report aspects. This study introduces a Conditional Self Attention Memory-Driven Transformer model for generating radiological reports. The model operates in two phases: initially, a multi-label classification model, utilizing ResNet152 v2 as an encoder, is employed for feature extraction and multiple disease diagnosis. In the second phase, the Conditional Self Attention Memory-Driven Transformer serves as a decoder, utilizing self-attention memory-driven transformers to generate text reports. Comprehensive experimentation was conducted to compare existing and proposed techniques based on Bilingual Evaluation Understudy (BLEU) scores ranging from 1 to 4. The model outperforms the other state-of-the-art techniques by increasing the BLEU 1 (0.475), BLEU 2 (0.358), BLEU 3 (0.229), and BLEU 4 (0.165) respectively. This study's findings can alleviate radiologists' workloads and enhance clinical workflows by introducing an autonomous radiological report generation system.

2.
Photochem Photobiol ; 2023 Nov 14.
Artículo en Inglés | MEDLINE | ID: mdl-37961822

RESUMEN

Apart from biocompatibility, ZnO quantum dots (QDs) are considered to be an efficient luminescence material due to their low cost and high redox potential. Here, we report the synthesis of ZnO QDs by using five different functionalizing ligands like mercaptoacetic acid (MAA), 3-mercaptopropionic acid (MPA), octadecene (ODE), ethylene glycol (EG), and oleyl amine (OLA) and fabricate their assemblies with graphene oxide (GO). We investigate the role of functionalizing ligands as a surface modifier of ZnO QDs for their attachment to GO. The steady-state photoluminescence (SSPL) and time-resolved photoluminescence (TRPL) analyses demonstrate the photoluminescence (PL) quenching of ZnO QDs in ZnO QDs-GO assembly. The highest reduction in PL intensity is observed with ZnO QDs-GO assembly with EG as a surface functionalizing ligand. Cyclic voltammetry (CV) analysis confirms the feasibility of charge transfer from ZnO QDs to the GO. The maximum (79.43%) charge transfer efficiency (ECT ) is observed in the case of ZnO-MAA-GO as compared to other assemblies. This means the thiol group-containing ligands facilitate charge transfer as compared to hydroxyl and amine group ligands. This leads to the conclusion that charge transfer in ZnO QDs-GO assemblies depends strongly on the nature of surface ligands.

3.
RSC Adv ; 13(28): 19096-19105, 2023 Jun 22.
Artículo en Inglés | MEDLINE | ID: mdl-37362335

RESUMEN

In this article, we report the band gap tuning of ternary ZnCdS quantum dots (QDs) by varying the concentration of the capping ligand, mercaptoacetic acid (MAA). The functionalization of QDs leads to the control of their size and band gap due to the quantum confinement effect, causing blue shift in the absorption and photoluminescence (PL) spectra with a gradual change in the concentration of the capping ligand from 0.5 to 2.5 M. Ensulizole (2-phenylbenzimidazole-5-sulfonic acid) is an important organic ultraviolet (UV) filter that is frequently used in sunscreen cosmetics. An effective overlapping of the PL spectrum of ensulizole and the absorption spectrum of QDs with 2.5 M MAA is achieved. A formidable decrease in the PL intensity and the PL lifetime of ensulizole promotes an efficient Förster resonance energy transfer (FRET) from sunscreen ensulizole to the QDs. The magnitude of the FRET efficiency (E) is ∼70%. This very high value of E is the signature of the existence of a very fast energy transfer process from ensulizole to the MAA functionalized ZnCdS QDs. The dyad system consisting of ZnCdS QDs and ensulizole sunscreen can serve as a prototype model to develop a better understanding of the photochemistry of ensulizole and consequently the formulation of more efficient sunscreen cosmetics.

4.
Comput Intell Neurosci ; 2021: 6689204, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34122534

RESUMEN

Education is the cultivation of people to promote and guarantee the development of society. Education reforms can play a vital role in the development of a country. However, it is crucial to continually monitor the educational model's performance by forecasting the outcome's progress. Machine learning-based models are currently a hot topic in improving the forecasting research area. Forecasting models can help to analyse the impact of future outcomes by showing yearly trends. For this study, we developed a hybrid, forecasting time-series model by long short-term memory (LSTM) network and self-attention mechanism (SAM) to monitor Morocco's educational reform. We analysed six universities' performance and provided a prediction model to evaluate the best-performing university's performance after implementing the latest reform, i.e., from 2015-2030. We forecasted the six universities' research outcomes and tested our proposed methodology's accuracy against other time-series models. Results show that our model performs better for predicting research outcomes. The percentage increase in university performance after nine years is discussed to help predict the best-performing university. Our proposed algorithm accuracy and performance are better than other algorithms like LSTM and RNN.


Asunto(s)
Aprendizaje Automático , Redes Neurales de la Computación , Algoritmos , Predicción , Humanos , Marruecos
5.
Psychosomatics ; 50(3): 293-6, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-19567772

RESUMEN

BACKGROUND: Genital herpes is a common and painful infection. Its prevalence within the United States is estimated to be 40 million to 60 million people. Three medications, acyclovir, valacyclovir, and famciclovir, have been shown to reduce the duration and severity of the disease. OBJECTIVE: The authors report on the first known case of valacyclovir-induced psychosis with symptoms of mania in a young woman with no previous psychiatric history. METHOD: The patient presented with irritable mood and grandiose delusions 72 hours after starting valacyclovir for genital herpes. Valacyclovir treatment was stopped, and risperidone was initiated. RESULTS: The symptoms continued after stopping the valacyclovir, but improved with risperidone. DISCUSSION: There are reports of neuropsychiatric side effects with valacyclovir's structural analogs in elderly patients with renal dysfunction. Clinicians should be aware that valacyclovir may induce psychosis with manic presentation in young, healthy patients without a psychiatric history.


Asunto(s)
Aciclovir/análogos & derivados , Antivirales/efectos adversos , Trastorno Bipolar/inducido químicamente , Herpes Genital/tratamiento farmacológico , Psicosis Inducidas por Sustancias/diagnóstico , Valina/análogos & derivados , Aciclovir/efectos adversos , Aciclovir/uso terapéutico , Adolescente , Antipsicóticos/uso terapéutico , Antivirales/uso terapéutico , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/tratamiento farmacológico , Femenino , Humanos , Psicosis Inducidas por Sustancias/tratamiento farmacológico , Recurrencia , Risperidona/uso terapéutico , Valaciclovir , Valina/efectos adversos , Valina/uso terapéutico
6.
J Mol Endocrinol ; 41(4): 205-17, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18632874

RESUMEN

Selective estrogen receptor modulators (SERMs) are potentially useful in treating various endometrial disorders, including endometrial cancer, as they block some of the detrimental effects of estrogen. It remains unclear whether each SERM regulates a unique subset of genes and, if so, whether the combination of a SERM and 17beta-estradiol has an additive or synergistic effect on gene expression. We performed microarray analysis with Affymetrix Mouse Genome 430 2.0 short oligomer arrays to determine gene expression changes in uteri of ovariectomized mice treated with estradiol (low and high dose), methyl-piperidino-pyrazole (MPP), ICI 182 780, raloxifene, and combinations of high dose of estradiol with one of the SERM and dimethyl sulfoxide (DMSO) vehicle control. The nine treatments clustered into two groups, with MPP, raloxifene, and high dose of estradiol in one, and low dose of estradiol, ICI + estradiol, ICI, MPP + estradiol, and raloxifene + estradiol in the second group. Surprisingly, combining a high dose of estradiol with a SERM markedly increased (P<0.02) the number of regulated genes compared with each individual treatment. Analysis of expression for selected genes in uteri of estradiol and SERM-treated mice by quantitative (Q)RT-PCR generally supported the microarray results. For some cancer-associated genes, including Klk1, Ihh, Cdc45l, and Cdca8, administration of MPP or raloxifene with estradiol resulted in greater expression than estradiol alone (P<0.05). By contrast, ICI 182 780 suppressed more genes governing DNA replication compared with MPP and raloxifene treatments. Therefore, ICI 182 780 might be superior to MPP and raloxifene to treat estrogen-induced endometrial cancer in women.


Asunto(s)
Estradiol/análogos & derivados , Estradiol/farmacología , Piperidinas/farmacología , Pirazoles/farmacología , Clorhidrato de Raloxifeno/farmacología , Útero/efectos de los fármacos , Animales , Antagonistas de Estrógenos/farmacología , Receptor alfa de Estrógeno/agonistas , Estrógenos/farmacología , Femenino , Fulvestrant , Expresión Génica/efectos de los fármacos , Ratones , Análisis de Secuencia por Matrices de Oligonucleótidos , Ovariectomía , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Útero/metabolismo
7.
Bipolar Disord ; 9(8): 851-9, 2007 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-18076534

RESUMEN

OBJECTIVES: To determine whether switching from depression to mania is part of the natural history of bipolar illness or results from antidepressant (AD) treatment by examining bipolar patients with psychosis early in their illness course. METHODS: A multi-facility cohort of 123 first-admission inpatients, aged 15-60 years, with DSM-IV bipolar disorder (BD) with psychotic features, was followed for four years, and 76 individuals experienced at least one episode of depression. Frequency of and risk factors for switches from depression to mania, time to switch, and duration of the subsequent manic episode were examined in relation to AD use (with anti-manic and/or antipsychotic medications). RESULTS: The 76 respondents experienced 113 depressive episodes. Those prescribed ADs had more depressive episodes and spent more time depressed than non-users. A total of 23 depressive episodes in 17 respondents ended in a manic/hypomanic/mixed episode (20%). The time to switch and duration of the subsequent manic episode were not significantly different for the seven respondents and nine episodes involving AD treatment versus the 10 respondents and 14 episodes without ADs. None of the risk factors (age of onset

Asunto(s)
Antipsicóticos/efectos adversos , Trastorno Bipolar/inducido químicamente , Trastorno Bipolar/fisiopatología , Depresión/fisiopatología , Adolescente , Adulto , Trastorno Bipolar/diagnóstico , Trastorno Bipolar/tratamiento farmacológico , Estudios de Cohortes , Depresión/tratamiento farmacológico , Progresión de la Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Factores de Riesgo , Índice de Severidad de la Enfermedad , Factores de Tiempo , Resultado del Tratamiento
8.
Psychol Med ; 37(8): 1173-81, 2007 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-17335639

RESUMEN

BACKGROUND: Few studies have examined the course of illness among severely depressed patients ascertained at first hospitalization. Using data from the Suffolk County Mental Health Project (SCMHP), we investigated the times to and predictors of the first full remission and the first relapse during a 4-year period in a first-admission cohort with major depressive disorder (MDD) with psychotic features. METHOD: The cohort included 87 county-wide, first-admission patients with a longitudinal consensus diagnosis of MDD with psychotic features who were systematically followed over a 4-year period. We examined the associations of background, clinical and treatment factors, and time-varying indices of antidepressant (AD) and antipsychotic (AP) medication use to time to remission and relapse using Cox regression. RESULTS: By the 4-year follow-up, 60 respondents (69.0%) had achieved a period of full remission (median time of 22 weeks among remitters and 54 weeks in the full sample). In the multivariable analysis, longer time to remission was associated with longer latency between initial episode and hospitalization, lower pre-hospital Global Assessment of Functioning (GAF) score, and lack of insurance, but not use of medication. Twenty-six remitters (43.3%) relapsed (median time of 50 weeks among those who relapsed and 192 weeks among all remitters). None of the risk factors or time-varying medication variables was significantly associated with time to relapse. CONCLUSION: Only two-thirds of the sample had at least one full remission by 4 years, and almost half of them subsequently relapsed. Poorer pre-hospital resources predicted remission but not relapse. Medication use over the follow-up was not associated with remission or relapse.


Asunto(s)
Trastornos Psicóticos Afectivos/rehabilitación , Trastorno Depresivo Mayor/rehabilitación , Admisión del Paciente , Adolescente , Adulto , Trastornos Psicóticos Afectivos/diagnóstico , Trastornos Psicóticos Afectivos/psicología , Antidepresivos/uso terapéutico , Antipsicóticos/uso terapéutico , Estudios de Cohortes , Trastorno Depresivo Mayor/diagnóstico , Trastorno Depresivo Mayor/psicología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , New York , Determinación de la Personalidad , Recurrencia , Factores de Riesgo , Estadística como Asunto
9.
Schizophr Bull ; 31(3): 639-49, 2005 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-15976012

RESUMEN

Knowing the long-term outcomes of schizophrenia and stability of a schizophrenia diagnosis are important from a clinical standpoint as well as essential to future research on diagnostic classifications and outcome. As in prior research on schizophrenia, prospectively designed long-term studies over the past 30 years find that the predominant course of illness includes chronically poor functioning, with little evidence of long-term improvement. Mortality due to suicide is significant at about 10% over 10-year periods of follow-up. Within studies, outcome domains are interrelated, and the relatively consistent predictors of poorer outcome include family history of schizophrenia, insidious onset, poor premorbid functioning, severity of negative symptoms, and severity and duration of untreated psychosis. Residing in a developed rather than a developing country is also associated with a poorer long-term course. The diagnostic stability of schizophrenia is less well studied. The positive predictive value exceeds 90%, and preliminary findings from the 10-year follow-up of the Suffolk County Mental Health Project cohort have found that the agreement across time increased from k = .52 (baseline to 10 years) to k = .76 (6 or 24 months to 10 years). After discussing several limitations of the existing body of research, we suggest that future studies incorporate more "modifiable" risk factors into the assessment battery that could potentially be used as building blocks in experimental intervention designs.


Asunto(s)
Esquizofrenia/diagnóstico , Psicología del Esquizofrénico , Adulto , Estudios de Cohortes , Diagnóstico Diferencial , Femenino , Estudios de Seguimiento , Humanos , Masculino , New York/epidemiología , Pronóstico , Factores de Riesgo , Índice de Severidad de la Enfermedad , Suicidio
10.
J Coll Physicians Surg Pak ; 13(6): 345-6, 2003 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-12814535

RESUMEN

This case report presents the clinical picture, diagnostic methodology and surgical treatment of a female child who presented with chronic cough and dyspnoea due to congenital malformation of lung. A discussion of diagnosis and management is presented at the end.


Asunto(s)
Malformación Adenomatoide Quística Congénita del Pulmón/diagnóstico , Malformación Adenomatoide Quística Congénita del Pulmón/cirugía , Neumonectomía/métodos , Femenino , Humanos , Lactante
11.
Schizophr Res ; 62(1-2): 51-8, 2003 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-12765743

RESUMEN

BACKGROUND: The validity of schizophreniform disorder remains controversial. Past research suggests that cases of schizophreniform disorder may be: (1). atypical cases of affective disorders, (2). cases of schizophrenia in early course, or (3). a heterogeneous group of disorders including a subgroup with benign course and outcome which maintains this diagnosis in the long term. METHOD: We tested the validity of the schizophreniform disorder diagnosis by comparing the socio-demographic and baseline clinical characteristics, 24-month course and outcome, and 6- and 24-month research diagnoses of 34 cases initially diagnosed with schizophreniform disorder, and 128 cases with schizophrenia, drawn from a cohort of 628 first-admission patients in the Suffolk County Mental Health Project. RESULTS: Compared to patients with schizophrenia, those with schizophreniform disorder were more likely to remit fully by 6 months and retain this status by 24 months. Only about half of the patients with schizophreniform disorder were re-diagnosed with schizophrenia or schizoaffective disorder at 24-month follow-up, 13% were re-diagnosed with affective disorders and 19% retained the diagnosis of schizophreniform disorder. In contrast, 92% of cases with a baseline diagnosis of schizophrenia retained this diagnosis at 24-month follow-up. The findings were similar in comparisons with schizophrenia patients having onset of symptoms within 6 months of hospitalization. CONCLUSIONS: Schizophreniform disorder is a heterogeneous category, which includes a small group with benign psychotic disorders who maintain this diagnosis over at least 24 months. Better delineation of this subgroup has important treatment implications.


Asunto(s)
Admisión del Paciente , Trastornos Psicóticos/diagnóstico , Esquizofrenia/diagnóstico , Psicología del Esquizofrénico , Adolescente , Adulto , Estudios de Cohortes , Diagnóstico Diferencial , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , New York , Escalas de Valoración Psiquiátrica/estadística & datos numéricos , Psicometría/estadística & datos numéricos , Trastornos Psicóticos/clasificación , Trastornos Psicóticos/psicología , Trastornos Psicóticos/terapia , Reproducibilidad de los Resultados , Esquizofrenia/clasificación , Esquizofrenia/terapia
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