A5013645472- Face recognition and analysis
- Ear Surgery and Otitis Media
- Intracerebral and Subarachnoid Hemorrhage Research
- Biometric Identification and Security
- COVID-19 diagnosis using AI
- Aortic aneurysm repair treatments
- 3D Shape Modeling and Analysis
- Fetal and Pediatric Neurological Disorders
- Cerebrovascular and Carotid Artery Diseases
- Advanced Neuroimaging Techniques and Applications
- RNA regulation and disease
- Vestibular and auditory disorders
- Hearing, Cochlea, Tinnitus, Genetics
- Image Processing and 3D Reconstruction
- Face and Expression Recognition
- Computer Graphics and Visualization Techniques
- Semantic Web and Ontologies
- Intracranial Aneurysms: Treatment and Complications
- Cardiac, Anesthesia and Surgical Outcomes
- Sinusitis and nasal conditions
- Radiomics and Machine Learning in Medical Imaging
- Domain Adaptation and Few-Shot Learning
- Machine Learning in Healthcare
- Nasal Surgery and Airway Studies
- Handwritten Text Recognition Techniques
Centrus Diagnósticos por Imagem
2009-2024
Hospital de Clínicas Universidade Federal do Paraná
2020
Universidade Federal do Paraná
2001-2020
Athinoula A. Martinos Center for Biomedical Imaging
2020
Stanford University
2020
The University of Texas Southwestern Medical Center
2020
Thomas Jefferson University Hospital
2020
The Ohio State University
2020
Cornell University
2020
Colégio Brasileiro de Cirurgiões
2014
This dataset is composed of annotations the five hemorrhage subtypes (subarachnoid, intraventricular, subdural, epidural, and intraparenchymal hemorrhage) typically encountered at brain CT.
Objetivo: Avaliar a correlação dos parâmetros do tensor de difusão com o escore Loes e se os poderiam indicar alterações estruturais precoces. Materiais Métodos: As medidas foram obtidas em 30 exames 14 pacientes adrenoleucodistrofia ligada ao X correlacionadas Loes. Um grupo controle 28 masculinos foi avaliado para estabelecer pareadas por idade. Análises estatísticas intra interobservador feitas. Resultados: apresentam forte segundo coeficiente Pearson (r), valores –0,86, 0,89, 0,89 0,84...
Abstract Introduction Otosclerosis is a primary osteodystrophy of the otic capsule, frequently responsible for acquired hearing loss in adults. Although diagnostic value imaging investigations otosclerosis debatable, they might still be employed with different goals within context disease. Objectives The present paper aims to review most recent literature on use studies varied purposes, from routine application and differential diagnosis prognostic prediction investigation surgical failure....
Abstract Introduction One of the paths in investigation congenital sensorineural hearing loss (CSNHL) is to try characterize its etiology through inner ear evaluation using high resolution computer tomography (CT) scans. With minor malformation, it not always possible for a simple visual inspection recognize if structure normal or not. Objective To verify measurements are predictive (SNHL) and suggest cutoff points size limits. Methods Retrospective cross-sectional study CT scan 214...
To describe HRCT findings in patients with bacterial pneumonia following bone marrow transplantation (BMT).This was a retrospective study involving 30 diagnosed whom of the chest performed within 24 h after onset symptoms and diagnosis confirmed, based on positive culture sputum or bronchial aspirate, together pleural fluid blood culture, one week symptom onset. There were 20 male 10 female patients. The median age 21 years (range, 1-41 years). BMT had been for treatment following: chronic...
Abstract Aim: To demonstrate diagnostic imaging of an extremely rare presentation bilateral narrow duplication the internal auditory canal. Case report: An adolescent boy with profound sensorineural hearing loss presented for rehabilitation. Imaging studies (i.e. multidetector computed tomography and magnetic resonance imaging) clearly demonstrated canals, narrowing lower unilateral cochlear vestibular dysplasia, superior semicircular canal malformation, absence posterior canals. Conclusion:...
Cerebral aneurysmal arteriopathy of the circle Willis is an uncommon manifestation acquired human immunodeficiency virus (HIV) infection and up to now only 15 cases have been published in literature. For this reason we add our experience rare case, review most important aspects related entity. The patient a 6 year old male with perinatal transmitted AIDS, tetraparethic, developed symptoms characterized by episodes dystonic postures. computed tomography brain showed aneurismal Willis. He had...
Introduction The etiology of Ménière disease (MD), a difficult-to-treat condition with great morbidity, remains controversial in the literature. possible clinical and diagnostic impact anatomical variations temporal bone among patients MD has been recently studied. Objective To identify associated diagnosis MD. Methods Thirty-seven were included, although each ear was considered separately (n = 74). A case group (nA 33) composed affected ears definite control (nB 41) used consisting...
BACKGROUND: Diagnosis of abdominal aortic aneurysm (AAA) is usually incidental, and surgical treatment, when indicated, may be open or endovascular. The drawbacks computed angiotomography (CTA) the advantages Doppler ultrasonography have led to development alternative follow-up protocols, comparing two methods. OBJECTIVE: To determine validity indices for correlate them with CTA results in a group patients who had undergone elective endovascular treatment AAAs. MATERIAL AND METHODS:...
We report a case of histology-proven pleomorphic adenoma the parapharyngeal space in 20-year-old man. This was unusual that massive amount dystrophic calcification scattered throughout tumor. The patient underwent successful surgical resection, and he exhibited no signs recurrence during follow-up. Literature about such an presentation is scarce.
A tortuous vertebral artery is a rare entity and exceptionally causes symptoms, like radiculopathy, when it migrates into the intervertebral foramen. It must be considered in differential diagnosis of foramen widening, reported to alert surgeons, avoiding iatrogenic damage during endovascular treatments decompressive surgeries […] Widening by
1. Dracopoulos A, Widjaja E, Raybaud C, Westall CA, Snead OC. Vigabatrin-associated reversible MRI signal changes in patients with infantile spasms. Epilepsia 2010;51:1297-1304.2. Pearl PL, Vezina LG, Saneto RP, et al. Cerebral abnormalities associated vigabatrin therapy. 2009; 50:184-194.3. Thelle T, Gammelgaard L, Hansen JK, Ostergaard JR. Reversible magnetic resonance imaging and spectroscopy the course of treatment for West syndrome. Eur J Paediatric Neurology 2011; 15:260-264. 4. Simao...
Synthetic data is gaining increasing relevance for training machine learning models. This mainly motivated due to several factors such as the lack of real and intra-class variability, time errors produced in manual labeling, some cases privacy concerns, among others. paper presents an overview 2nd edition Face Recognition Challenge Era Data (FRCSyn) organized at CVPR 2024. FRCSyn aims investigate use synthetic face recognition address current technological limitations, including demographic...
A robust face recognition model must be trained using datasets that include a large number of subjects and numerous samples per subject under varying conditions (such as pose, expression, age, noise, occlusion). Due to ethical privacy concerns, large-scale real have been discontinued, such MS1MV3, synthetic generators proposed, utilizing GANs Diffusion Models, SYNFace, SFace, DigiFace-1M, IDiff-Face, DCFace, GANDiffFace, aiming supply this demand. Some these methods can produce high-fidelity...
Face recognition has become a widely adopted method for user authentication and identification, with applications in various domains such as secure access, law enforcement, locating missing persons. The success of this technology is largely attributed to deep learning, which leverages large datasets effective loss functions achieve highly discriminative features. Despite its advancements, face still faces challenges areas explainability, demographic bias, privacy robustness against aging,...
Facial authentication on mobile devices has become prevalent in various applications. Face Liveness Detection, or Anti-Spoofing (FAS), focuses identifying attempts by malicious users to impersonate someone else hide their own identity. One specific branch within this field is active liveness detection, which involves analyzing both the input signal and user behavior while they perform a required task verify authenticity of presented face. Despite significant amount research FAS, detection...
Avanços recentes em processamento de linguagem natural percolam para o campo reconhecimento documentos novos modelos e tarefas, mas tópico aumento dados é raramente discutido. Isto relevante especialmente escopo documentos, onde tarefas com poucas instâncias treinamento são grande importância muitos domínios, visto que bem anotados escassos, estes podem ser mesmo utilizados a própria tarefa anotação. Para melhorar cenários, apresentamos duas novas técnicas focadas maximizar conhecimento...
Synthetic data is gaining increasing popularity for face recognition technologies, mainly due to the privacy concerns and challenges associated with obtaining real data, including diverse scenarios, quality, demographic groups, among others. It also offers some advantages over such as large amount of that can be generated or ability customize it adapt specific problem-solving needs. To effectively use models should specifically designed exploit synthetic its fullest potential. In order...
A 74-year-old man with a history of invasive right parotid gland adenocarcinoma presented acute onset left hemiparesis. CT angiography showed abnormal cervical and intracranial vascular reflux enhancement middle cerebral artery territory (figure 1). Vascular anomalies were suspected but digital subtraction was normal. There spontaneous resolution the symptoms follow-up normalization imaging findings 2). Pseudopathological brain parenchymal has been described rarely, usually as an incidental...
The authors present a case of persistent hypoglossal artery. Persistent artery is the second most common carotid-basilar anastomosis with frequency 0.02% to 0.09% and it can be associated cerebrovascular disease. Diagnosis by imaging methods angiotomography method often employed.