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1.
Comput Med Imaging Graph ; 37(1): 40-7, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23273615

RESUMO

PURPOSE: To demonstrate the utility of semi-quantitative circumferential-profile analysis of regional cerebral blood flow (rCBF) SPECT in Alzheimer's disease (AD) versus white matter vascular dementia (WM-VaD). METHODS: Subjects underwent dementia evaluation, MRI and Tc-99m HMPAO SPECT. rCBF patterns from 11 AD and 20 WM-VaD patients were compared to 17 controls using semi-quantitative circumferential-profile analysis. RESULTS: AD patients showed more significant semi-quantitative circumferential-profile reductions in the posterior temporo-parietal regions, whereas WM-VaD patients demonstrated greater reductions involving the frontal regions of the brain. CONCLUSION: Semi-quantitative circumferential-profile analysis provides a practical semi-quantitative method to evaluate brain SPECT scans in AD versus WM-VaD patients.


Assuntos
Doença de Alzheimer/diagnóstico por imagem , Demência Vascular/diagnóstico por imagem , Processamento de Imagem Assistida por Computador/métodos , Tomografia Computadorizada de Emissão de Fóton Único/métodos , Idoso , Estudos de Casos e Controles , Circulação Cerebrovascular , Feminino , Humanos , Modelos Lineares , Imageamento por Ressonância Magnética , Masculino , Compostos Radiofarmacêuticos , Estudos Retrospectivos , Estatísticas não Paramétricas , Tecnécio Tc 99m Exametazima
4.
Emerg Radiol ; 13(1): 39-41, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16909261

RESUMO

A 17-year-old adolescent girl from El Salvador presented to the emergency room (ER) with severe abdominal pain associated with one episode of nausea and vomiting. The pain that started 5 days earlier was sharp in nature and epigastric in location with radiation to back and was relieved by half a tablet of Vicodin. The patient has a history of intermittent epigastric pain for the past 2 years and was treated for Helicobacter pylori for 1 year. In the ER, the serum chemistry demonstrated elevated amylase. Further workup with abdominal ultrasonography (US), computed tomography (CT), magnetic resonance cholangiopancreatography (MRCP), and hepatobiliary scintigraphy confirmed a type IV-a choledochal cyst with intra- and extrahepatic dilation of bile ducts. We report an unusual acute abdomen presentation of type IV-a choledochal cyst in a 17-year-old young adult from El Salvador.


Assuntos
Abdome Agudo/etiologia , Cisto do Colédoco/complicações , Cisto do Colédoco/patologia , Adolescente , Colangiopancreatografia por Ressonância Magnética , Cisto do Colédoco/diagnóstico por imagem , Feminino , Humanos , Cintilografia , Tomografia Computadorizada por Raios X , Ultrassonografia de Intervenção
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