AJR. American journal of roentgenology
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AJR Am J Roentgenol · Sep 1998
The retained intrapericardial sponge: value of the lateral chest radiograph.
Our objective was to identify reasons for the difficulty in diagnosing retained intrapericardial sponges and to determine ways to improve diagnostic accuracy. ⋯ All three intrapericardially retained sponges were in the posterior pericardium, a region not visible to the surgeon. Radiographic detection of the sponges on standard anteroposterior projections is difficult because of exposure factors, other confusing linear markers, and metallic densities such as sternal sutures. However, knowledge of the typical location of a lost sponge and use of lateral radiographic projections may aid in early detection of this rare complication.
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AJR Am J Roentgenol · Sep 1998
Comparative StudyUsefulness of optimized gadolinium-enhanced fast fluid-attenuated inversion recovery MR imaging in revealing lesions of the brain.
The purpose of this study was to compare the contrast enhancement of lesions of the brain revealed by gadolinium-enhanced optimized fast fluid-attenuated inversion recovery (FLAIR) MR imaging with that of lesions on gadolinium-enhanced optimized T1-weighted spin-echo MR imaging. ⋯ In this study, optimized gadolinium-enhanced conventional T1-weighted spin-echo MR imaging proved superior to gadolinium-enhanced fast FLAIR MR imaging in revealing lesions of the brain.
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AJR Am J Roentgenol · Sep 1998
Case ReportsCNS infections with free-living amebas: neuroimaging findings.
The purpose of this report is to describe the clinical history, treatment, pathology, and imaging in two cases of rare CNS infection caused by free-living amebas. The Naegleria fowleri and Acanthamoeba species cause primary amebic meningoencephalitis and granulomatous amebic encephalitis, respectively. We describe the neuroimaging findings of a case involving a nonspecific cerebral edema pattern in primary amebic meningoencephalitis and a case involving focal enhancing lesions in granulomatous amebic encephalitis. ⋯ Primary amebic meningoencephalitis and granulomatous amebic encephalitis have a grave prognosis and, although rare, should be considered in the differential diagnosis for patients who present with appropriate histories and imaging findings, including nonspecific brain edema on CT in primary amebic meningoencephalitis and focal punctate enhancing lesions in the posterior cranial fossa on T1-weighted MR imaging in granulomatous amebic encephalitis.
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AJR Am J Roentgenol · Aug 1998
Comparative StudyMR imaging in children with nonperforated acute appendicitis: value of unenhanced MR imaging in sonographically selected cases.
The aim of this study was to describe the MR appearance of acute appendicitis and to determine the value of MR imaging for diagnosis of acute appendicitis. ⋯ In this study group, MR imaging was a valuable technique for depiction of acute appendicitis.