Sarcoidose. Revisão dos Achados Radiológicos - Apresentação de um Caso

Sarcoidose. Revisão dos Achados Radiológicos - Apresentação de um Cas

Derrames Pericárdicos - Estudo Radiológico - Valor da Angiocardiografia

Derrames Pericárdicos - Estudo Radiológico - Valor da Angiocardiografi

Angiocardiografia com seriógrafo vertical

Angiocardiografia com seriógrafo vertica

Derrames Pericárdicos - Estudo Radiológico - Valor da Angiocardiografia

Derrames Pericárdicos - Estudo Radiológico - Valor da Angiocardiografi

Sarcoidose. Revisão dos Achados Radiológicos - Apresentação de um Caso

Sarcoidose. Revisão dos Achados Radiológicos - Apresentação de um Cas

Angiocardiografia com seriógrafo vertical

Angiocardiografia com seriógrafo vertica

Paraduodenal hernia : a case report

Os autores apresentam um caso de hérnia paraduodenal direita, fazendo breve resumo da embriologia e anatomia das fossas paraduodenais, e dos sinais, sintomas e aspectos radiológicos das hérnias paraduodenais.The authors present a case of right paraduodenal hernia and a brief review of the embriology and anatomy of the paraduodenal fossae as well as of the clinicaI signs, symptoms and radiologic aspects of paraduodenal hernias

Diagnosing dementia and normal aging : clinical relevance of brain ratios and cognitive performance in a Brazilian sample

The main objective of the present study was to evaluate the diagnostic value (clinical application) of brain measures and cognitive function. Alzheimer and multiinfarct patients (N = 30) and normal subjects over the age of 50 (N = 40) were submitted to a medical, neurological and cognitive investigation. The cognitive tests applied were Mini-Mental, word span, digit span, logical memory, spatial recognition span, Boston naming test, praxis, and calculation tests. The brain ratios calculated were the ventricle-brain, bifrontal, bicaudate, third ventricle, and suprasellar cistern measures. These data were obtained from a brain computer tomography scan, and the cutoff values from receiver operating characteristic curves. We analyzed the diagnostic parameters provided by these ratios and compared them to those obtained by cognitive evaluation. The sensitivity and specificity of cognitive tests were higher than brain measures, although dementia patients presented higher ratios, showing poorer cognitive performances than normal individuals. Normal controls over the age of 70 presented higher measures than younger groups, but similar cognitive performance. We found diffuse losses of tissue from the central nervous system related to distribution of cerebrospinal fluid in dementia patients. The likelihood of case identification by functional impairment was higher than when changes of the structure of the central nervous system were used. Cognitive evaluation still seems to be the best method to screen individuals from the community, especially for developing countries, where the cost of brain imaging precludes its use for screening and initial assessment of dementia