RESUMO
Sclerosing hemangioma (SH) is a relatively rare, benign neoplasm of the lung. Although there are relatively characteristic imaging findings, biopsy remains the definitive diagnostic test. We report the radiology and pathology of a patient with a SH, with emphasis on the computed tomographic and (18)F-fluorodeoxyglucose positron emission tomography findings, and review the literature on this unusual tumor.
Assuntos
Fluordesoxiglucose F18 , Pulmão/diagnóstico por imagem , Tomografia por Emissão de Pósitrons/métodos , Hemangioma Esclerosante Pulmonar/diagnóstico , Tomografia Computadorizada por Raios X/métodos , Adulto , Feminino , Humanos , Compostos RadiofarmacêuticosRESUMO
This article reviews the research to date, as well as our clinical experience from two institutions, on gadolinium-enhanced computed tomographic angiography (gCTA) for imaging the body. gCTA may be an appropriate examination for the small percentage of patients who would benefit from noninvasive vascular imaging, but who have contraindications to both iodinated contrast and magnetic resonance imaging. gCTA is more expensive than CTA with iodinated contrast, due to the dose of gadolinium administered, and gCTA has limitations compared with CTA with iodinated contrast, in that parenchymal organs are not optimally enhanced at doses of 0.5 mmol/kg or lower. However, in our experience, gCTA has been a very useful problem-solving examination in carefully selected patients. With the advent of 16-64 detector CT, in combination with bolus tracking, we believe that the overall dose of gadolinium needed for diagnostic CTA examinations, while relatively high, can be safely administered.
Assuntos
Angiografia/métodos , Meios de Contraste , Gadolínio DTPA , Tomografia Computadorizada por Raios X , Animais , HumanosAssuntos
Falso Aneurisma/diagnóstico por imagem , Eletromiografia , Perna (Membro)/irrigação sanguínea , Idoso , Idoso de 80 Anos ou mais , Falso Aneurisma/etiologia , Angiografia , Anticoagulantes/uso terapêutico , Feminino , Humanos , Tomografia Computadorizada por Raios X , Ultrassonografia , Varfarina/uso terapêuticoRESUMO
Image-guided spine interventions are being performed by radiologists and other physicians with increased frequency. This article assesses the use of several techniques and devices that can mitigate radiation exposure during interventional procedures. Measurements were obtained on a humanoid phantom with use of various shielding methods. Significant radiation dose reductions as great as 98.7% can be achieved with use of a combination of stationary and mobile lead barriers and operator position. The application of basic radiation physics in combination with prudent radiographic technique can significantly reduce radiation exposure to the operator and other personnel during spine interventions.
