GIOVANNI GUIDO CERRI
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Radiologia, Faculdade de Medicina - Docente
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina - Líder
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina - Líder
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bookPart Radiografia de tórax(2016) CERRI, Giovanni Guido; NOMURA, Cesar Higa; ARAúJO FILHO, José de Arimateia Batista; REISER, Carolina Sander- MAGNETIC RESONANCE-GUIDED HIGH-INTENSITY FOCUSED ULTRASOUND ABLATION OF OSTEOID OSTEOMA: A CASE SERIES REPORT(2016) ROVELLA, Marcello S.; MARTINS, Guilherme L. P.; CAVALCANTI, Conrado F. A.; BOR-SENG-SHU, Edson; CAMARGO, Olavo P.; CERRI, Giovanni G.; MENEZES, Marcos R.Osteoid osteoma is painful benign tumor. The aim of this study was to report our initial experience using magnetic resonance-guided focused ultrasound to treat osteoid osteomas. This retrospective single-center study included four patients treated with magnetic resonance-guided focused ultrasound. They presented with severe pain with reduced quality of life and a poor response to clinical treatment. The pre- and post-treatment evaluation comprised computed tomography and magnetic resonance imaging and focused on quality of life and the impact of pain on daily activities. After treatment, three patients had complete pain resolution with no recurrence. One patient had a recurrence of symptoms after 2 wk and underwent a new successful treatment with increased energy levels. On average, 13 sonications were administered (8-18 sonications/treatment) with an average energy of 2,003 J (range: 1,063-3,522 J). Magnetic resonance-guided focused ultrasound appears to be a feasible, tolerable and effective treatment in selected patients with osteoid osteomas. (E-mail: marcos.menezes@hc.fm.usp.br) (C) 2016World Federation for Ultrasound in Medicine & Biology.
- 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.
bookPart Diagnóstico por Imagem em Gastroenterologia(2016) ROCHA, Manoel de Souza; CERRI, Giovanni Guido- Predicting malignant neck lymphadenopathy using color duplex sonography based on multivariate analysis(2016) CHAMMAS, Maria C.; MACEDO, Tulio A. A.; LO, Victor W.; GOMES, Andrea C.; JULIANO, Adriana; CERRI, Giovanni G.PurposeTo select the best predictors of cervical lymph node malignancy based on gray-scale and power Doppler sonography using multivariate analysis. MethodsWe evaluated sonographically a total of 97 lymph nodes in the neck that were subjected to fine-needle aspiration biopsy. The gray-scale and power Doppler sonography parameters that we analyzed using multivariate logistic regression included size, shape, echogenicity, echotexture, margins, hilum, presence of microcalcifications or necrosis, vascularization, and resistance index (RI). ResultsThe three variables with a diagnostic accuracy exceeding 80% were an altered vascularization, heterogeneous echotexture, and abnormal hilum. Malignant nodes exhibited higher RI and larger sizes than benign nodes, and the best cutoff values to distinguish malignant from benign lymph nodes were an RI of 0.77 and a short axis0.9cm. Altered vascularization, a short axis0.9cm, and abnormal hilum were the best predictors of malignancy. ConclusionsThe best sonographic predictors of lymph node malignancy are, in descending order, an altered vascularization, a short axis0.9cm, an abnormal hilum, and a heterogeneous echotexture. (c) 2016 Wiley Periodicals, Inc. J Clin Ultrasound44:587-594, 2016
- Acoustic radiation force impulse (ARFI) elastography compared with biopsy for evaluating hepatic fibrosis after liver transplantation: a cross-sectional diagnostic study(2016) SCHMILLEVITCH, Joel; CHAMMAS, Maria Cristina; PUGLIESE, Vincenzo; ABDALA, Edson; RIZZON, Adriana Cortez; ALVES, Venancio; CARNEIRO, Luiz Augusto; CERRI, GiovanniCONTEXT AND OBJECTIVE: Biopsies are used after liver transplantation to evaluate fibrosis. This study aimed to evaluate the elasticity of transplanted livers by means of a non-invasive examination, acoustic radiation force imaging (ARFI) elastography, correlating the results with the histological analysis. DESIGN AND SETTING: Cross-sectional study in a public university hospital. METHODS: All patients consecutively operated between 2002 and 2010 with an indication for biopsy were evaluated by means of elastography. The radiologist evaluating ARFI and the pathologist doing anatomopathological examinations were blinded to each other's evaluations. RESULTS: During the study period, 33 patients were included. The indication for transplantation was cirrhosis due to hepatitis C in 21 cases (63%). Liver biopsies showed absence of fibrosis (F0) in 10 patients, F1 in 11, F2 in 8 and F3 in 4. There were no cases of F4 (cirrhosis). The difference in ARFI values (degree of fibrosis) was 0.26 (95% confidence interval, CI: 0.07-0.52) between the groups F0-F1 and F2-F4 (P = 0.04). An area under the curve of 0.74 (CI: 0.55-0.94) and a cutoff of 1.29 m/s between the groups resulted in the best relationship between sensitivity and specificity. Sensitivity (0.66; CI: 0.50-0.83) was lower than specificity (0.85; CI: 0.72-0.97). There was no significant difference in ARFI between patients with hepatitis C and those with other diseases. CONCLUSIONS: The values obtained from elastography were not affected by inflammatory reaction or anatomical alterations. A cutoff point of 1.29 m/s separating patients with or without significant fibrosis was identified.
bookPart Avaliação por Imagem da Glândula Tireoide(2016) CHAMMAS, Maria Cristina; SAITO, Osmar de Cássio; JULIANO, Adriana Gonçalves; CERRI, Giovanni GuidobookPart Avaliação por Imagem das Glândulas Paratireoides(2016) SAITO, Osmar de Cássio; CHAMMAS, Maria Cristina; CERRI, Giovanni Guido