Publications by authors named "Ansari G"

The U4 small nuclear RNA (snRNA) forms a duplex with the U6 snRNA and, together with U5 and ∼30 proteins, is part of the U4/U6.U5 tri-snRNP complex, located at the core of the major spliceosome. Recently, recurrent variants in the U4 RNA, transcribed from the gene, and in at least two other genes were discovered to cause neurodevelopmental disorder.

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Purpose: The purpose of this study was to provide a large, multi-center normative dataset for the Macular Integrity Assessment (MAIA) microperimeter and compare the goodness-of-fit and prediction interval calibration-error for a panel of hill-of-vision models.

Methods: Microperimetry examinations of healthy eyes from five independent study groups and one previously available dataset were included (1137 tests from 531 eyes of 432 participants [223 women and 209 men]). Linear mixed models (LMMs) were fitted to the data to obtain interpretable hill-of-vision models.

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  • This study focuses on drug-drug interactions (DDIs) between antiretroviral therapy (ART) and common medications used by women living with HIV, highlighting their impact on treatment effectiveness and safety.
  • The research found that 21.4% of participants experienced DDIs, with the highest rates among those taking cardiovascular and central nervous system medications.
  • Importantly, the presence of DDIs was linked to changes in ART regimens and poorer adherence to treatment, suggesting a need for careful monitoring of interactions in HIV care.
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Background: Pediatric dysphagia is a commonly encountered clinical problem, with primary cricopharyngeal achalasia being a rare etiology. Management options for this condition include observation, medical and surgical management. The goal of this review paper was to summarize the current literature on the topic with respect to patient presentation, diagnosis and surgical management options.

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Statement Of The Problem: Treatment of immature necrotic teeth is a problematic situation. Conventional root canal therapy is challenging and leaves a weak, fragile, and undeveloped tooth for lifetime.

Purpose: This review was aimed to assess the outcome of available randomized clinical trials (RCTs) on the efficacy of platelet concentrates (PC) in dentine-pulp complex regeneration.

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Background: The escalating prevalence of ESBL-producing Enterobacteriaceae in Qatar's pediatric population, especially in community-onset febrile urinary tract infections (FUTIs), necessitates a comprehensive investigation into this concerning trend.

Results: Over the course of one year, a total of 459 infants were diagnosed and subsequently treated for UTIs. Cases primarily occurred in infants aged over 60 days, predominantly non-Qatari females born from term pregnancies.

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We sought to determine the diagnostic accuracy of radiomics features in predicting HPV status in oropharyngeal squamous cell carcinoma (SCC) compared to routine paraclinical measures used in clinical practice. Twenty-six articles were included in the systematic review, and thirteen were used for the meta-analysis. The overall sensitivity of the included studies was 0.

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  • Researchers studied different types of pancreatic cysts (IPMN and SCA) to find better ways for doctors to tell them apart using special images called ADC maps.
  • They tested 136 patients and used a computer model to analyze the images, looking for specific features that help identify each type of cyst.
  • The model showed that it could correctly identify the cyst types with a high degree of accuracy, which means it could help doctors make better decisions about treatment.
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Background: Conscious sedation has gained more popularity these days, with different routes of drug administration having various advantages and disadvantages. Among all, ketamine is one of the most commonly used drugs in children.

Objectives: The aim of the present study was to compare 2 different routes of ketamine administration - intranasal (IN) vs.

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Objectives: Pulpotomy is the most commonly performed treatment for asymptomatic primary molars with exposed dental pulp. This study aimed to assess the clinical /radiographic success of diode laser pulpotomy with mineral trioxide aggregate (MTA), calcium hydroxide (CH), and calcium-enriched mixture (CEM) cement as pulp capping agents.

Methods: This split-mouth randomized clinical trial was conducted initially on 34 children aged 3-8 years but 4 patients left the study before the first follow-up visit and the study was accomplished and analyzed with 30 cases.

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Introduction: The aim of this study was to describe the design and the participants' baseline characteristics of a prospective natural history study of geographic atrophy (GA) secondary to age-related macular degeneration.

Methods: The optical coherence tomography (OCT) and microperimetry biomarker evaluation in patients with GA (OMEGA) study was conducted at a tertiary referral center (ClinicalTrials.gov identifier: NCT05963646).

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  • This study assessed the effectiveness of radiomics features in identifying lymph node metastasis in patients with cholangiocarcinoma and gallbladder cancer using preoperative imaging.
  • It analyzed publications from January 2005 to October 2022, evaluating the methodological quality and diagnostic performance through various statistical methods, including the calculation of sensitivity and specificity.
  • The findings indicated that radiomics models demonstrated good diagnostic accuracy, with an overall sensitivity of 74.8% and specificity of 79.5%, and integrating biological data improved these metrics even further.
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Objective: For patients presenting with acute ischemic stroke (AIS) caused by large vessel occlusions (LVO), mechanical thrombectomy (MT) is the treatment standard of care in eligible patients. Modified Thrombolysis in Cerebral Infarction (mTICI) grades of 2b, 2c, and 3 are all considered successful reperfusion; however, recent studies have shown achieving mTICI 2c/3 leads to better outcomes than mTICI 2b. This study aims to investigate whether any baseline preprocedural or periprocedural parameters are predictive of achieving mTICI 2c/3 in successfully recanalized LVO patients.

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Background: Nontuberculous mycobacterial cervicofacial lymphadenitis (NTMCL) is an uncommon condition detected in young immunocompetent children who typically present with a nontender neck mass. Various tests have been proposed to assist in the work-up of suspected NTMCL, with varying diagnostic utility. This systematic review investigates the sensitivity of the various diagnostic methods used in the work-up of pediatric NTMCL.

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  • Immunotherapy, especially immune checkpoint inhibitors, is changing how advanced cancer is treated.
  • Imaging helps doctors see how well the treatment is working and if the cancer is coming back.
  • New ways to look at tumors, like measuring how they enhance and checking their volume, are being tested to see if they predict better patient survival compared to old methods.
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  • Unsolicited invitations to speak at medical meetings are increasing and primarily used as spam and phishing tactics targeting radiologists.
  • In a 2-week study, 73.3% of faculty members received a total of 188 inappropriate invitation emails, with a mean of 4.13 invites per faculty.
  • The majority (over 96%) of these invitations were irrelevant to their specialties, with the most significant factor for receiving more solicitations being a higher publication count since 2022.
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  • Hepatocellular carcinoma and intrahepatic cholangiocarcinoma are the two main types of cancer that originate in the liver.
  • The review focuses on how imaging characteristics of these tumors can help in telling them apart.
  • Understanding the available imaging techniques is crucial for accurately differentiating between these liver malignancies.
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Skin cancer is a serious disease that affects people all over the world. Melanoma is an aggressive form of skin cancer, and early detection can significantly reduce human mortality. In the United States, approximately 97,610 new cases of melanoma will be diagnosed in 2023.

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Lymph node metastases are associated with poor clinical outcomes in pancreatic ductal adenocarcinoma (PDAC). In preoperative imaging, conventional diagnostic modalities do not provide the desired accuracy in diagnosing lymph node metastasis. The current review aims to determine the pooled diagnostic profile of studies examining the role of radiomics features in detecting lymph node metastasis in PDAC.

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Rationale And Objectives: The number of international medical graduates (IMG) in radiology residencies has varied from year to year even as the number of candidates continues to grow. It is unclear from which countries the IMGs are arriving and what visas are being used to accommodate them.

Materials And Methods: We sent a survey to 195 program directors (PD) in diagnostic radiology (DR) inquiring about the number and nationality of IMG residents in their program, their attitudes about IMG candidates, the performance of their IMG trainees, and the visas that are offered.

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This study examines the patterns of faculty solicitations by open-access (OA) publishers in radiology. The purpose of the research is to determine the factors that predict the likelihood of receiving such solicitations. We recruited 6 faculty members from 7 subspecialties in radiology to collect emails from OA journals for 2 weeks.

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Objective: Patients undergoing surgical management for obstructive sleep apnea (OSA) are likely medically distinct from their counterparts not treated surgically. This study examined the associations between psychiatric and pain comorbidities and the likelihood of undergoing sleep surgery.

Study Design: A retrospective cohort study of adults with OSA.

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Objective: The interruption of vascular supply to the inner ear is one of several proposed etiologies of sudden sensorineural hearing loss (SSNHL). The increased presence of cardiovascular risk factors may predispose patients to SSNHL through this pathway. This systematic review and meta-analysis studies the presence of cardiovascular risk factors in patients diagnosed with SSNHL.

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Background: To study the additive value of radiomics features to the BCLC staging system in clustering HCC patients.

Methods: A total of 266 patients with HCC were included in this retrospective study. All patients had undergone baseline MR imaging, and 95 radiomics features were extracted from 3D segmentations representative of lesions on the venous phase and apparent diffusion coefficient maps.

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