ABSTRACT
Since the introduction of Multi-slice computed tomography (CT), cardiac CT has been the increasingly used as a noninvasive modality for the diagnosis of coronary disease. Despite its potential benefits and promising clinical results, it has suffered from high doses of radiation associated with a risk of radiation-induced cancers. This has raised serious concerns in clinical practice. A number of strategies were then implemented to reduce the radiation dose associated with cardiac CT. The aim of this review is not to compare doses of different CT systems available on the market but to present an overview of different approaches to dose reduction and future directions.
Subject(s)
Coronary Angiography , Coronary Disease/diagnostic imaging , Tomography, X-Ray Computed , Coronary Angiography/adverse effects , Coronary Angiography/methods , Coronary Angiography/standards , Heart/radiation effects , Humans , Image Processing, Computer-Assisted , Radiation Dosage , Radiation Protection , Risk Assessment , Risk Factors , Tomography, X-Ray Computed/adverse effects , Tomography, X-Ray Computed/methods , Tomography, X-Ray Computed/standardsABSTRACT
Most liver abscesses are caused by Enterobacteriaceae, sometimes associated with anaerobes. Listeriosis is an exceptional cause of liver abscess, usually in a context of disseminated infections. We report the case of a diabetic woman who had liver abscess due to Listeria monocytogenes. The organism was isolated after guided needle aspiration, and there was no other site of infection. The course of the disease gradually moved towards recovery under an antibiotic therapy that was based on sensitivity tests. A search for immunodeficiency proved negative. A review of the literature showed that the rare cases of listerial liver abscess share a common factor, diabetes mellitus, the importance of which has not yet been noticed.
Subject(s)
Diabetes Mellitus, Type 2/complications , Listeriosis/complications , Liver Abscess/complications , Female , Humans , Middle AgedABSTRACT
Transient, physiologic and rare, dilatation of the ductus arteriosus in asymptomatic neonates, shown by left superior mediastinal mass. It appears only on the PA chest roentgenogram, with vascular characteristics. It disappears after three or four days of regular checking and the diagnosis is thus confirmed, cutting out any other mediastinal pathology. There is no need to use more stressing or ruder technics.
