HEITOR NAOKI SADO
Projetos de Pesquisa
Unidades Organizacionais
Instituto de Radiologia, Hospital das Clínicas, Faculdade de Medicina
LIM/43 - Laboratório de Medicina Nuclear, Hospital das Clínicas, Faculdade de Medicina
LIM/43 - Laboratório de Medicina Nuclear, Hospital das Clínicas, Faculdade de Medicina
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bookPart Glândulas salivares(2017) SADO, Heitor NaokiconferenceObject Comparison of SPECT/CT and Planar Sentinel Node Lymphoscintigraphy in Breast Cancer Patients(2013) JIMENEZ-HEFFERNAN, A.; RAMOS, C.; MORA, E. Sanchez de; LOPEZ-MARTIN, J.; SALGADO, C.; LADRERO, D.; SADO, H.; PASCUAL, T.- Prevalence of exclusive lower extremity metastases at 18F-NaF PET/CT(2015) ORDONES, Monique Beraldo; VALADARES, Agnes Araujo; DUARTE, Paulo Schiavom; SADO, Heitor Naoki; LIMA, Marcos Santos; CARVALHO, Giovanna; SAPIENZA, Marcelo Tatit; BUCHPIGUEL, Carlos AlbertoAbstract Objective: To evaluate the prevalence of exclusive lower extremity metastases, specifically in the femur and below the knee, observed at 18F-NaF PET/CT. Materials and Methods: One thousand consecutive PET/CT studies were retrospectively evaluated for the presence of exclusive uptake in lower extremities suggesting metastatic involvement. The presumptive diagnoses based on such uptakes were subsequently obtained by evaluation of other imaging studies. Results: No exclusive uptake suggestive of metastasis below the femur was observed in the present series. Exclusive uptake was observed in the proximal femur with a presumptive diagnosis of metastasis in two patients. Conclusion: The prevalence of exclusive metastasis below the femur is low and scanning from head to knees is appropriate in most cases.
bookPart Cintilografia para pesquisa de sangramento intestinal(2017) ONO, Carla Rachel; BUCHPIGUEL, Carlos Alberto; SADO, Heitor Naoki; SAPIENZA, Marcelo TatitbookPart Mucosa gástrica ectópica(2017) SADO, Heitor NaokibookPart Esvaziamento gástrico(2017) SADO, Heitor Naoki- Comparison of Oral and IV 18F-NaF PET/CT Administration in the Assessment of Bone Metastases in Patients With Breast or Prostate Cancers(2023) ROCHA, Nelisa Helena; ZACCHI, Samara Riguete; SADO, Heitor Naoki; BUCHPIGUEL, Carlos Alberto; DUARTE, Paulo Schiavom; SAPIENZA, Marcelo TatitPurposeThe aim of this study was to compare oral and IV administrations of F-18-NaF PET/CT for detection of suspicious bone metastatic lesions of breast and prostate cancers.Patients and MethodsThirty-six patients with breast (n = 23) or prostate (n = 13) cancers and high risk for bone metastases were prospectively evaluated. All patients underwent 2 PET/CT studies after IV and oral F-18-NaF administration within a 2 to 23 days interval between them. The maximum SUVs from the same suspicious lesions (& LE;5 index lesions per patient) in both studies were measured. The target-to-background ratio (TBR), defined as the relation between the lesion maximum SUV and the whole skeletal mean SUV, was calculated for each lesion. The TBRs in the same lesion calculated using the 2 administration routes were compared. The agreements between 2 physicians in the definition of the number of lesions in both studies were also assessed using weighted & kappa;.ResultsOne hundred thirty-four pairs of lesions were analyzed. There was no significant statistical difference between the median TBRs (P = 0.212) for IV (10.33) and oral (10.85). Excellent intraobserver agreement was observed between IV and oral routes: weighted & kappa; of 1.0 (95% confidence interval, 0.92-1.0) and 0.92 (95% confidence interval, 0.81-0.99) for physicians 1 and 2, respectively. The interobserver coefficients were 0.82 and 0.87 for ""oral versus oral"" and ""IV versus IV,"" respectively.Conclusions(18)F-NaF PET/CT studies using oral and IV routes present comparable performance; thus, it is possible to use oral route in patients with difficult venous access.
article 3 Citação(ões) na Scopus Correlação entre volume tireoidiano determinado pelo método de ultrassonografia versus cintilografia e sua implicação em cálculos dosimétricos na terapia com radioiodo na doença de Graves(2011) VIEIRA, Lucas de Oliveira; KUBO, Rodrigo; SAPIENZA, Marcelo Tatit; WILLEGAIGNON, Jose; CHAMMAS, Maria Cristina; COURA-FILHO, George Barberio; ONO, Carla Rachel; WATANABE, Tomoco; SADO, Heitor Naoki; BUCHPIGUEL, Carlos AlbertoIntroduction: Graves disease (GD) is the most common cause of hiperthyroidism, and the most common treatment options are surgery, antithyroid drugs and radioiodine therapy. In radiodosimetric calculations to determine radioiodine dosage it is possible to use thyroid volume estimatives based on ultrasound or scintigraphy. Objective: The present study aimed to correlate these methodologies emphasizing volume estimatives and dosimetric implications. Subjects and methods: Were included 103 patients with GD diagnosis and indication of radioiodine treatment. They were submitted to thyroid ultrasound and thyroid scintigraphy. Results and conclusions: Good correlation between both methods was observed, although scintigraphy systematically obtained greater volumes than ultrasound implying in lower estimatives of absorbed dose when scintigraphy is used. Arq Bras Endocrinol Metab. 2011;55(9):696-700bookPart Cintilografia hepatoesplênica e pesquisa de baço acessório(2017) ONO, Carla Rachel; BUCHPIGUEL, Carlos Alberto; SADO, Heitor Naoki; SAPIENZA, Marcelo TatitbookPart Esvaziamento gástrico(2012) SADO, Heitor Naoki