5 documents found, page 1 of 1
The value of signal intensity on T1-weighted chemical shift magnetic resonance ...
Dalavia,Claudio Carvalho; Goldman,Suzan Menasce; Melo,Homero José de Farias e; Kater,Claudio Elias; Szejnfeld,Jacob; Iared,Wagner; Ajzen,Sergio AronAbstract Objective: To investigate the advantages of using modified signal intensity measurements on chemical shift imaging alone or in conjunction with proton magnetic resonance spectroscopy in the differential diagnosis of adrenal adenomas. Materials and Methods: This was a prospective study involving 97 patients with adrenal nodules or masses. The signal intensity index (SII) was calculated as [(signal inten...
Assessing cardiovascular risk in ATM heterozygotes
Kotchetkoff,Elaine Cristina de Almeida; Souza,Fabíola Isabel Suano de; Fonseca,Fernando Luiz Affonso; Hix,Sonia; Ajzen,Sergio AronSummary Objective: To evaluate the carotid intima-media complex (CIMC) thickness and lipid metabolism biomarkers associated with cardiovascular risk (CR) in parents of patients with ataxia-telangiectasia and verify an association with gender. Method: A cross-sectional and controlled study with 29 ATM heterozygotes and 14 healthy controls. Biochemical tests and CIMC thickness measurement were performed. Results:...
Impact of PSA density of transition zone as a potential parameter in reducing t...
Castro,Hugo A. Socrates; Iared,Wagner; Santos,José Eduardo Mourão; Solha,Raphael Sandes; Shigueoka,David Carlos; Ajzen,Sergio AronABSTRACT Purpose: To assess the accuracy of prostate-specific antigen (PSA) adjusted for the transition zone volume (PSATZ) in predicting prostate cancer by comparing the ability of several PSA parameters in predicting prostate cancer in men with intermediate PSA levels of 2.6 – 10.0 ng/mL and its ability to reduce unnecessary biopsies. Materials and Methods: This study included 656 patients referred for prosta...
Relationship between cardiovascular risk factors and the echogenicity and patte...
Sarmento,Priscilla Lopes da Fonseca Abrantes; Plavnik,Frida Liane; Scaciota,Andrea; Lima,Joab Oliveira; Miranda,Robson Barbosa; Ajzen,Sergio AronCONTEXT AND OBJECTIVE: The thickness of the carotid intima-media complex (C-IMC) is considered to be a marker of early atherosclerosis, but visual and echogenic changes to the C-IMC can also be noted. The objective here was to evaluate the relationship between cardiovascular risk factors and the echogenicity of the C-IMC and identify those most associated with an "abnormal" C-IMC. DESIGN AND SETTING: Cross-sect...
Comparação dos métodos de imagem no diagnóstico dos tumores renais e calcificaç...
Ribeiro,Sergio Marrone; Ajzen,Sergio Aron; Trindade,José Carlos SouzaOBJETIVO: Tentar estabelecer uma metodologia no diagnóstico e conduta dos pacientes com massas renais sólidas e complexas, comparando os custos e benefícios dos diferentes métodos de diagnóstico por imagem. Procuramos avançar no diagnóstico diferencial entre lesões benignas e malignas, particularmente através da investigação das calcificações tumorais. MÉTODOS: Realizamos um estudo prospectivo em 31 pacientes p...