RESUMO
The aim of this study was to examine a pulmonary gadobutrol resorption after inhalation. An examination of 16 young swine, which were given different amounts of gadobutrol through inhalation, was performed. A measurement of the signal elevation in peripheral lung tissue as well as in the thoracic aorta was made using a T(1)-weighted FLASH-3D sequence in a 1.5 T magnetic resonance imaging (MRI) machine. Twenty minutes after gadobutrol application, a steep signal elevation in the aorta was reported, as well as a plateau phase after 45 min. The signal elevation in peripheral lung tissue after inhalation increased to a mean of 33.9%. The concurrent signal elevation of the abdominal aorta was 137.4%. The evaluation of an intravascular signal elevation after gadobutrol inhalation opens the possibility to evaluate and obtain lung diffusion with MRI.
Assuntos
Pulmão/metabolismo , Imageamento por Ressonância Magnética/métodos , Compostos Organometálicos/administração & dosagem , Compostos Organometálicos/metabolismo , Administração por Inalação , Animais , Aorta Torácica/metabolismo , Feminino , Pulmão/irrigação sanguínea , Masculino , Modelos Animais , Capacidade de Difusão Pulmonar/efeitos dos fármacos , Suínos , Fatores de TempoRESUMO
CONTEXT: Ureteral obstruction, resulting in impaired graft function, is a well-known problem following renal transplantation. Management of ureteral complications includes percutaneous nephrostomy, which is considered to be a safe and effective measure. CASE REPORT: Here, we demonstrate a case of a 35-year old renal allograft recipient with primary graft function but stagnating serum creatinine following extraction of the double-J catheter. Ureteral stenosis was suspected by ultrasound imaging and magnetic resonance tomography, and urinary flow was preserved with a percutaneous nephrostomy. However, early displacement of the percutaneous nephrostomy catheter resulted in distinct clinical discomfort. CT imaging suggested an intra-abdominal position of the catheter's tip, requiring immediate surgical action. CONCLUSION: The present case demonstrates that performing PCN following renal transplantation may have unexpected risks.
Assuntos
Dispneia/etiologia , Insuficiência Cardíaca/complicações , Hérnia Hiatal/complicações , Anuloplastia da Valva Mitral , Valva Mitral/cirurgia , Idoso de 80 Anos ou mais , Dispneia/diagnóstico por imagem , Dispneia/fisiopatologia , Feminino , Insuficiência Cardíaca/terapia , Hérnia Hiatal/diagnóstico por imagem , Hérnia Hiatal/fisiopatologia , Humanos , Postura , Sono , Tomografia Computadorizada por Raios XRESUMO
On the Internet, there are few pediatric radiology databases. The most important and complete Web site is PediatricRadiology.com, which provides many radiological links but does not have its own database. We present an Internet project called PedRad.info (also known as Kinderradiologie-Online). The open-source, case-oriented publication platform publishes validated pediatric radiology findings on the Internet. A comparable on-line program, even for adult radiology, does not exist, so this tool is a pioneer in the area of Web-based information technology for medical and radiological communities.