Priscila Silveira Salvadori
Federal University of São Paulo
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Featured researches published by Priscila Silveira Salvadori.
Radiologia Brasileira | 2013
Breno Victor Tomaz Galvão; Lucas Rios Torres; Patrícia Prando Cardia; Thiago Franchi Nunes; Priscila Silveira Salvadori; Giuseppe D'Ippolito
Objective To determine the prevalence of liver cysts and hemangiomas in the general population and in cirrhotic patients. Materials and Methods Retrospective, observational, and cross-sectional study selecting consecutive magnetic resonance imaging studies performed in the period from February to July 2011. A total of 303 patients (187 women and 116 men) with mean age of 53.3 years were included in the present study. Patients with previously known liver lesions were excluded. The images were consensually analyzed by two observers in the search for simple liver cysts and typical liver hemangiomas, according to universally accepted imaging criteria. Lesions prevalence, diameters and location were determined in both cirrhotic and non-cirrhotic individuals. Results The authors observed prevalence of 8.6% for hemangiomas and 14.5% for simple cysts. No statistically significant difference was observed in relation to prevalence of hemangiomas and cysts among cirrhotic and non-cirrhotic patients (p = 0.954; p = 0.472). Conclusion In the present study, the prevalence of cysts and hemangiomas was higher than the prevalence reported by autopsy series. No influence of cirrhosis was observed on the prevalence and appearance of such incidental lesions.
Radiologia Brasileira | 2013
Priscila Silveira Salvadori; Manuel Cerqueira Costa; Ricardo Francisco Tavares Romano; Breno Vitor Tomaz Galvão; Rodrigo da Fonseca Monjardim; Elisa Almeida Sathler Bretas; Lucas Torres Rios; David Carlos Shigueoka; Rogério Pedreschi Caldana; Giuseppe D'Ippolito
OBJECTIVE: To evaluate the role of the equilibrium phase in abdominal computed tomography. MATERIALS AND METHODS: A retrospective, cross-sectional, observational study reviewed 219 consecutive contrast-enhanced abdominal computed tomography images acquired in a three-month period, for different clinical indications. For each study, two reports were issued - one based on the initial analysis of non-contrast-enhanced, arterial and portal phases only (first analysis), and a second reading of these phases added to the equilibrium phase (second analysis). At the end of both readings, differences between primary and secondary diagnoses were pointed out and recorded, in order to measure the impact of suppressing the equilibrium phase on the clinical outcome for each of the patients. The extension of the exact Fishers test was utilized to evaluate the changes in the primary diagnosis (p 0.999). As regards secondary diagnoses, changes after the second analysis were observed in five cases (2.3%). CONCLUSION: For clinical scenarios such as cancer staging, acute abdomen and investigation for abdominal collections, the equilibrium phase is dispensable and does not offer any significant diagnostic contribution.
Radiologia Brasileira | 2013
Rodrigo da Fonseca Monjardim; Danilo Manuel Cerqueira Costa; Ricardo Francisco Tavares Romano; Priscila Silveira Salvadori; Jaime de Vargas Conde dos Santos; Augusto Castelli von Atzingen; David Carlos Shigueoka; Giuseppe D'Ippolito
Objective To evaluate the diagnostic capacity of abdominal computed tomography in the assessment of hepatic steatosis using the portal phase with a simplified calculation method as compared with the non-contrast-enhanced phase. Materials and Methods In the present study, 150 patients were retrospectively evaluated by means of non-contrast-enhanced and contrast-enhanced computed tomography. One hundred patients had hepatic steatosis and 50 were control subjects. For the diagnosis of hepatic steatosis in the portal phase, the authors considered a result of < 104 HU calculated by the formula [L - 0.3 × (0.75 × P + 0.25 × A)] / 0.7, where L, P and A represent the attenuation of the liver, of the main portal vein and abdominal aorta, respectively. Sensitivity, specificity, positive and negative predictive values were calculated, using non-contrast-enhanced computed tomography as the reference standard. Results The simplified calculation method with portal phase for the diagnosis of hepatic steatosis showed 100% sensitivity, 36% specificity, negative predictive value of 100% and positive predictive value of 75.8%. The rate of false positive results was 64%. False negative results were not observed. Conclusion The portal phase presents an excellent sensitivity in the diagnosis of hepatic steatosis, as compared with the non-contrast-enhanced phase of abdominal computed tomography. However, the method has low specificity.
Radiologia Brasileira | 2015
Ricardo Francisco Tavares Romano; Priscila Silveira Salvadori; Lucas Rios Torres; Elisa Almeida Sathler Bretas; Daniel Bekhor; Rogério Pedreschi Caldana; Regina Bitelli Medeiros; Giuseppe D'Ippolito
Objective To assess the reduction of estimated radiation dose in abdominal computed tomography following the implementation of new scan protocols on the basis of clinical suspicion and of adjusted images acquisition parameters. Materials and Methods Retrospective and prospective review of reports on radiation dose from abdominal CT scans performed three months before (group A – 551 studies) and three months after (group B – 788 studies) implementation of new scan protocols proposed as a function of clinical indications. Also, the images acquisition parameters were adjusted to reduce the radiation dose at each scan phase. The groups were compared for mean number of acquisition phases, mean CTDIvol per phase, mean DLP per phase, and mean DLP per scan. Results A significant reduction was observed for group B as regards all the analyzed aspects, as follows: 33.9%, 25.0%, 27.0% and 52.5%, respectively for number of acquisition phases, CTDIvol per phase, DLP per phase and DLP per scan (p < 0.001). Conclusion The rational use of abdominal computed tomography scan phases based on the clinical suspicion in conjunction with the adjusted images acquisition parameters allows for a 50% reduction in the radiation dose from abdominal computed tomography scans.
Radiologia Brasileira | 2015
Priscila Silveira Salvadori; Lucas Novais Bomfim; Augusto Castelli von Atzingen; Giuseppe D'Ippolito
Epithelial ovarian tumors are the most common malignant ovarian neoplasms and, in most cases, eventual rupture of such tumors is associated with a surgical procedure. The authors report the case of a 54-year-old woman who presented with spontaneous rupture of ovarian cystadenocarcinoma documented by computed tomography, both before and after the event. In such cases, a post-rupture staging tends to be less favorable, compromising the prognosis.
Seminars in Ultrasound Ct and Mri | 2017
Ulysses S. Torres; Camila D.F.M. Fortes; Priscila Silveira Salvadori; Dario A. Tiferes; Giuseppe D’Ippolito
Pneumatosis of the alimentary tract may occur from the esophagus to rectum as a result of a wide spectrum of conditions that range from benign to life-threatening. Although distinguishing between these 2 groups is of paramount importance for an appropriate clinical management, it still remains a challenge for the radiologist in the daily practice. In the light of the current literature, we provide in the present article a comprehensive review focusing on the clinical, laboratory, and radiological findings that most consistently may allow such a differentiation. We also provide a pictorial essay illustrating this range of diagnoses, briefly discussing each one.
Radiologia Brasileira | 2013
Danilo Manuel Cerqueira Costa; Priscila Silveira Salvadori; Rodrigo da Fonseca Monjardim; Elisa Almeida Sathler Bretas; Lucas Rios Torres; Rogério Pedreschi Caldana; David Carlos Shigueoka; Regina Bitelli Medeiros; Giuseppe D'Ippolito
Radiologia Brasileira | 2016
Leandro Cardarelli-Leite; Fernanda Garozzo Velloni; Priscila Silveira Salvadori; Marcelo Delboni Lemos; Giuseppe D'Ippolito
Gastroenterología y Hepatología | 2016
Priscila Silveira Salvadori; Ulysses S. Torres; Giuseppe D’Ippolito
Archive | 2013
Breno Victor; Tomaz Galvão; Lucas Rios Torres; Patrícia Prando Cardia; Thiago Franchi Nunes; Priscila Silveira Salvadori; Giuseppe D'Ippolito