REGIS OTAVIANO FRANCA BEZERRA
Projetos de Pesquisa
Unidades Organizacionais
Instituto do Câncer do Estado de São Paulo, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina
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- Whole-Body Magnetic Resonance Imaging in the Oncology Setting: An Overview and Update on Recent Advances(2019) BEZERRA, Regis Otaviano Franca; RECCHIMUZZI, Debora Zachello; MOTA, Micaela Maciel dos Santos; GARCIA, Marcio Ricardo Taveira; MENEZES, Marcos Roberto de; MAZO, Paulo Eduardo; CERRI, Giovanni GuidoWhole-body magnetic resonance imaging is becoming an important tool in oncology as a nonirradiating imaging technique since recent technological advances allowed the incorporation of high-quality imaging in an adequate time. Moreover, the noninjection of radioisotope/intravenous contrast, low cost compared with traditional nuclear medicine techniques, and fast acquisition times are another distinct feature. Thus, the purpose of this article is to review the whole-body magnetic resonance imaging protocol and its main applications in the oncology setting.
- Hepatocyte-specific contrast agent-enhanced magnetic resonance cholangiography: perioperative evaluation of the biliary tree(2017) ZATTAR-RAMOS, Luciana Carmen; BEZERRA, Regis Otaviano Franca; SIQUEIRA, Luis Tenório de Brito; MENEZES, Marcos Roberto; LEITE, Claudia da Costa; CERRI, Giovanni GuidoAbstract A large number of gadolinium chelates have recently been tested in clinical trials. Some of those have already been approved for clinical use in the United States and Europe. Thus, new diagnostic perspectives have been incorporated into magnetic resonance imaging studies. Among such gadolinium chelates are hepatobiliary-specific contrast agents (HSCAs), which, due to their property of being selectively taken up by hepatocytes and excreted by the biliary ducts, have been widely used for the detection and characterization of focal hepatic lesions. In comparison with conventional magnetic resonance cholangiography (MRC), HSCA-enhanced MRC provides additional information, with higher spatial resolution and better anatomic evaluation of a non-dilated biliary tree. A thorough anatomic assessment of the biliary tree is crucial in various hepatic surgical procedures, such as complex resection in patients with colorectal cancer and living-donor liver transplantation. However, the use of HSCA-enhanced MRC is still limited, because of a lack of data in the literature and the poor familiarity of radiologists regarding its main indications. This pictorial essay aims to demonstrate the use of HSCA-enhanced MRC, with particular emphasis on anatomical analysis of the biliary tree, clinical applications, and the most important imaging findings.
bookPart Métodos radiológicos(2013) COSTA, Daniel Nóbrega da Costa; PINHO, Marco da Cunha; GARCIA, Marcio Ricardo Taveira; BEZERRA, Regis Otaviano França; GARCIA, Rodrigo Gobbo; JULIO, Thiago; SUGUINO, Silvio; MARCELINO, Antônio Sergio Zafred; CHALA, Luciano Fernandes; BARROS, Nestor de; MENEZES, Marcos Roberto de; CERRI, Giovanni GuidoconferenceObject Whole-body diffusion-weighted MRI (DWMR) compared with [68Ga] DOTATOC-PET/CT (68Ga) and OctreoScan (OCT) for staging neuroendocrinc tumors (NET)(2014) BEZERRA, Regis; GUMZ, Brenda Pires; ETCHEBEHERE, Elba; SANTOS, Allan Oliveira; FERNANDES, Recidia Rayane Reboucas; HOFF, Paulo Marcelo; STRECKER, Ralph; MENEZES, Marcos; COSTA, Froderico- Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) in colorectal liver metastasis: the radiologist's perspective(2016) ZATTAR-RAMOS, L. C.; BEZERRA, R. O.; SIQUEIRA, L. T.; MARQUES, D. T.; MENEZES, M. R.; HERMAN, P.; MACHADO, M. A. C.; CERRI, G. G.; LEITE, C. C.This retrospective study included 9 patients with CRLM who underwent the ALPPS procedure. Abdominal imaging studies were reviewed, with an emphasis on a rational radiological approach. The number of liver metastases, the FLR volume (pre- and postportal vein ligation), anatomical variations, potential pitfalls related to disease progression, and postoperative complications were evaluated. The types of hepatic resection included 4 classical ALPPS cases, 3 right ALPPS variations, and 2 left ALPPS variations. The mean FLR volume calculated in the initial evaluation was 453 mL (213-790 mL). Following the first surgery, the mean FLR volume increased to 634 mL (410-957 mL), which indicated a mean volume increase of 181.1 mL (95% CI 149.7-212.5 mL; p < 0.001) and a mean absolute volume increase of 48% (19%-88%). The ALPPS procedure is an emerging form of two-stage hepatectomy. In this context, radiologists should provide crucial preoperative and perioperative information that may change surgical planning and contribute to an improvement in the oncologic outcome.
- Guidelines for the management of neuroendocrine tumours by the Brazilian gastrointestinal tumour group(2017) RIECHELMANN, Rachel P.; WESCHENFELDER, Rui F.; COSTA, Frederico P.; ANDRADE, Aline Chaves; OSVALDT, Alessandro Bersch; QUIDUTE, Ana Rosa P.; SANTOS, Allan dos; HOFF, Ana Amelia O.; GUMZ, Brenda; BUCHPIGUEL, Carlos; PEREIRA, Bruno S. Vilhena; LOURENCO JUNIOR, Delmar Muniz; ROCHA FILHO, Duilio Reis da; FONSECA, Eduardo Antunes; MELLO, Eduardo Linhares Riello; MAKDISSI, Fabio Ferrari; WAECHTER, Fabio Luiz; CARNEVALE, Francisco Cesar; COURA-FILHO, George B.; PAULO, Gustavo Andrade de; GIROTTO, Gustavo Colagiovanni; BEZERRA NETO, Joao Evangelista; GLASBERG, Joao; CASALI-DA-ROCHA, Jose Claudio; REGO, Juliana Florinda M.; MEIRELLES, Luciana Rodrigues de; HAJJAR, Ludhmila; MENEZES, Marcos; BRONSTEIN, Marcello D.; SAPIENZA, Marcelo Tatit; FRAGOSO, Maria Candida Barisson Villares; PEREIRA, Maria Adelaide Albergaria; BARROS, Milton; FORONES, Nora Manoukian; AMARAL, Paulo Cezar Galvao do; MEDEIROS, Raphael Salles Scortegagna de; ARAUJO, Raphael L. C.; BEZERRA, Regis Otaviano Franca; PEIXOTO, Renata D'Alpino; AGUIAR JR., Samuel; RIBEIRO JR., Ulysses; PFIFFER, Tulio; HOFF, Paulo M.; COUTINHO, Anelisa K.Neuroendocrine tumours are a heterogeneous group of diseases with a significant variety of diagnostic tests and treatment modalities. Guidelines were developed by North American and European groups to recommend their best management. However, local particularities and relativisms found worldwide led us to create Brazilian guidelines. Our consensus considered the best feasible strategies in an environment involving more limited resources. We believe that our recommendations may be extended to other countries with similar economic standards.
- Magnetic resonance imaging of the vagina: an overview for radiologists with emphasis on clinical decision making(2015) FERREIRA, Daian Miranda; BEZERRA, Régis Otaviano França; ORTEGA, Cinthia Denise; BLASBALG, Roberto; VIANA, Públio César Cavalcante; MENEZES, Marcos Roberto de; ROCHA, Manoel de SouzaAbstract: Magnetic resonance imaging is a method with high contrast resolution widely used in the assessment of pelvic gynecological diseases. However, the potential of such method to diagnose vaginal lesions is still underestimated, probably due to the scarce literature approaching the theme, the poor familiarity of radiologists with vaginal diseases, some of them relatively rare, and to the many peculiarities involved in the assessment of the vagina. Thus, the authors illustrate the role of magnetic resonance imaging in the evaluation of vaginal diseases and the main relevant findings to be considered in the clinical decision making process.