FERNANDO ULIANA KAY
Projetos de Pesquisa
Unidades Organizacionais
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina
19 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 19
- Bullet embolism of pulmonary artery: a case report(2014) YAMANARI, Mauricio Gustavo Ieiri; MANSUR, Maria Clara Dias; KAY, Fernando Uliana; SILVERIO, Paulo Rogerio Barboza; JAYANTHI, Shri Krishna; FUNARI, Marcelo Buarque de GusmãoThe authors report the case of a patient victim of gunshots, with a very rare complication: venous bullet embolism from the left external iliac vein to the lingular segment of the left pulmonary artery. Diagnosis is made with whole-body radiography or computed tomography. Digital angiography is reserved for supplementary diagnosis or to be used as a therapeutic procedure.
- Differences between postmortem computed tomography and conventional autopsy in a stabbing murder case(2014) ZERBINI, Talita; SILVA, Luiz Fernando Ferraz da; FERRO, Antonio Carlos Goncalves; KAY, Fernando Uliana; AMARO JUNIOR, Edson; PASQUALUCCI, Carlos Augusto Goncalves; SALDIVA, Paulo Hilario do NascimentoOBJECTIVE: The aim of the present work is to analyze the differences and similarities between the elements of a conventional autopsy and images obtained from postmortem computed tomography in a case of a homicide stab wound. METHOD: Comparison between the findings of different methods: autopsy and postmortem computed tomography. RESULTS: In some aspects, autopsy is still superior to imaging, especially in relation to external examination and the description of lesion vitality. However, the findings of gas embolism, pneumothorax and pulmonary emphysema and the relationship between the internal path of the instrument of aggression and the entry wound are better demonstrated by postmortem computed tomography. CONCLUSIONS: Although multislice computed tomography has greater accuracy than autopsy, we believe that the conventional autopsy method is fundamental for providing evidence in criminal investigations.
conferenceObject SUBTLE IMPAIRMENT OF RIGHT VENTRICULAR FUNCTION IN SYSTEMIC SCLEROSIS WITH LUNG FIBROSIS DETECTED BY TISSUE DOPPLER(2014) SAMPAIO-BARROS, P.; RODRIGUES, A. C.; ROQUE, M.; ARRUDA, A. L.; BECKER, D.; BARROS, S.; KAY, F.; EMMERICH, T.; CERRI, G.conferenceObject Pulmonary Complications in Right Sided Endocarditis(2013) RODRIGUES, Ana Clara T.; KAY, Fernando U.; OGAWA, Andrea; NISHIYAMA, Katia; ARRUDA, Ana Lucia; LIRA FILHO, Edgar; KOWATSCH, Ingrid; FURTADO, Meive; CERRI, Glovanni G.; ANDRADE, Jose L.conferenceObject High Resolution Computer Tomography Analysis Of A Cohort Of Mixed Connective Tissue Disease (mctd) Patients: 10 Years Of Follow-Up(2013) KAWANO-DOURADO, L.; DIAS, O. M.; KAY, F.; GRIPP, T.; GOMES, P.; CALEIRO, M.; KAIRALLA, R.; CARVALHO, C. R. R.- Do Current Lung Cancer Screening Guidelines Apply for Populations With High Prevalence of Granulomatous Disease? Results From the First Brazilian Lung Cancer Screening Trial (BRELT1)(2016) SANTOS, Ricardo Sales dos; FRANCESCHINI, Juliana P.; CHATE, Rodrigo Caruso; GHEFTER, Mario Claudio; KAY, Fernando; TRAJANO, Andre Luiz C.; PEREIRA, Jose Rodrigues; SUCCI, Jose Ernesto; FERNANDO, Hiran C.; SAAD JUNIOR, RobertoBackground. Low-dose computed tomography (LDCT) screening for lung cancer has been demonstrated to be effective in reducing cancer mortality. However, these studies have not been undertaken in countries where the incidence of granulomatous disease is high. The First Brazilian Lung Cancer Screening Trial (BRELT1) has completed initial accrual and is now in the follow-up phase. We present results from the initial prevalence round of screening. Methods. The inclusion criteria were the same as those for the National Lung Cancer Screening Trial (NLST). Pulmonary nodules larger than 4 mm were considered positive and required evaluation by a multidisciplinary team. Indeterminate nodules were evaluated with fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) or biopsy when indicated. Statistical analysis was performed with Fisher's exact test to compare our positive findings with those of the NLST. Results. From January 2013 to July 2014, 790 participants were enrolled. Positive LDCT scans were reported in 312 (39.4%) participants, with a total of 552 nodules larger than 4 mm. The comparison between positive findings in the NLST (7,191 of 26,722 cases) and those in the BRELT1 (312 of 790 cases) showed a significant difference (p < 0.001). The positive predictive value was lower in BRELT1 than in the NLST (3.2% versus 3.8%, respectively). Follow-up imaging was indicated in 278 of 312 (89.1%) participants; 35 procedures were performed in 25 participants. In 15 cases, benign lesions were diagnosed. Non-small-cell lung cancer (NSCLC) was diagnosed in 10 patients (prevalence of 1.3%). In 8 patients (stage IA/IB disease), treatment was by resection only, in 1 patient neoadjuvant chemotherapy was used (stage IIIA), and in 1 patient advanced disease was diagnosed (stage IV). Conclusions. Using NSLT criteria, a larger number of patients had positive scans (nodules), compared with previous lung cancer screening studies. However, the number of participants requiring surgical biopsy procedures and who were ultimately identified as having cancer was similar to other reports. This supports the role of screening in patient populations with a high incidence of granulomatous inflammation. (C) 2016 by The Society of Thoracic Surgeons
- Organ doses evaluation for chest computed tomography procedures with TL dosimeters: Comparison with Monte Carlo simulations(2019) GIANSANTE, Louise; MARTINS, Juliana C.; NERSISSIAN, Denise Y.; KIERS, Karen C.; KAY, Fernando U.; SAWAMURA, Marcia V. Y.; LEE, Choonsik; GEBRIM, Eloisa M. M. S.; COSTA, Paulo R.Purpose: To evaluate organ doses in routine and low-dose chest computed tomography (CT) protocols using an experimental methodology. To compare experimental results with results obtained by the National Cancer Institute dosimetry system for CT (NCICT) organ dose calculator. To address the differences on organ dose measurements using tube current modulation (TCM) and fixed tube current protocols. Methods: An experimental approach to evaluate organ doses in pediatric and adult anthropomorphic phantoms using thermoluminescent dosimeters (TLDs) was employed in this study. Several analyses were performed in order to establish the best way to achieve the main results in this investigation. The protocols used in this study were selected after an analysis of patient data collected from the Institute of Radiology of the School of Medicine of the University of Sao Paulo (InRad). The image quality was evaluated by a radiologist from this institution. Six chest adult protocols and four chest pediatric protocols were evaluated. Lung doses were evaluated for the adult phantom and lung and thyroid doses were evaluated for the pediatric phantom. The irradiations were performed using both a GE and a Philips CT scanner. Finally, organ doses measured with dosimeters were compared with Monte Carlo simulations performed with NCICT. Results: After analyzing the data collected from all CT examinations performed during a period of 3 yr, the authors identified that adult and pediatric chest CT are among the most applied protocol in patients in that clinical institution, demonstrating the relevance on evaluating organ doses due to these examinations. With regards to the scan parameters adopted, the authors identified that using 80 kV instead of 120 kV for a pediatric chest routine CT, with TCM in both situations, can lead up to a 28.7% decrease on the absorbed dose. Moreover, in comparison to the standard adult protocol, which is performed with fixed mAs, TCM, and ultra low- dose protocols resulted in dose reductions of up to 35.0% and 90.0%, respectively. Finally, the percent differences found between experimental and Monte Carlo simulated organ doses were within a 20% interval. Conclusions: The results obtained in this study measured the impact on the absorbed dose in routine chest CT by changing several scan parameters while the image quality could be potentially preserved.
- Pneumomediastinum, subcutaneous emphysema, and pneumothorax after a pulmonary function testing in a patient with bleomycin-induced interstitial pneumonitis(2013) ARAUJO, Mariana Sponholz; FERNANDES, Frederic Leon Arrabal; KAY, Fernando Uliana; CARVALHO, Carlos Roberto RibeiroSpontaneous pneumomediastinum is an uncommon event, the clinical picture of which includes retrosternal chest pain, subcutaneous emphysema, dyspnea, and dysphonia. The pathophysiological mechanism involved is the emergence of a pressure gradient between the alveoli and surrounding structures, causing alveolar rupture with subsequent dissection of the peribronchovascular sheath and infiltration of the mediastinum and subcutaneous tissue with air. Known triggers include acute exacerbations of asthma and situations that require the Valsalva maneuver. We described and documented with HRCT scans the occurrence of pneumomediastinum after a patient with bleomycin-induced interstitial lung disease underwent pulmonary function testing. Although uncommon, the association between pulmonary function testing and air leak syndromes has been increasingly reported in the literature, and lung diseases, such as interstitial lung diseases, include structural changes that facilitate the occurrence of this complication.
conferenceObject Positive End-Expiratory Pressure (peep) Titration Using Electrical Impedance Tomography (eit) In Laparoscopic Surgery: Before Or During Pneumoperitoneum?(2017) PEREIRA, S. M.; TUCCI, M. R.; TONELOTTO, B. F. F.; SIMOES, C. M.; MORAIS, C. C. A.; POMPEO, M. S.; KAY, F. U.; CARVALHO, C. R. R.; VIEIRA, J. E.; AMATO, M. B. P.conferenceObject 10-Year Follow-Up Of Pulmonary Function In Mixed Connective Tissue Disease(2013) KAWANO-DOURADO, L.; DIAS, O. M.; KAY, F. U.; GRIPP, T. E. H.; GOMES, P. S.; CALEIRO, M. C.; FULLER, R.; KAIRALLA, R. A.; CARVALHO, C. R. R.