AJR. American journal of roentgenology
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AJR Am J Roentgenol · Feb 2010
Tracheal stricture and fistula: management with a barbed silicone-covered retrievable expandable nitinol stent.
The purpose of this study was to evaluate the safety and effectiveness of a barbed silicone-covered retrievable expandable nitinol stent in preventing stent migration in patients with tracheal strictures or fistulas. ⋯ Use of a barbed silicone-covered retrievable expandable nitinol stent relieves dyspnea and facilitates fistula closure in patients with benign or malignant tracheal strictures or fistulas. The barbed design of the stent is important in preventing migration.
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AJR Am J Roentgenol · Feb 2010
Microbiologic contamination and time efficiency of use of automatic MDCT injectors with prefilled syringes: Results of a clinical investigation.
Multiple use of syringes in automatic injectors is considered to place patients at risk of septic complications. The purpose of this study was to evaluate the microbiologic contamination and time efficiency associated with routine clinical use of single-use prefilled disposable syringes for contrast administration. ⋯ Use of prefilled contrast syringes with single-use saline syringes is associated with time-efficient assembly of injection systems and prevents microbiologic contamination in clinical routine, especially in the care of immunocompromised patients.
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AJR Am J Roentgenol · Feb 2010
Do additional views improve the diagnostic performance of cervical spine radiography in pediatric trauma?
The aims of this study were to measure the diagnostic performances of lateral views alone and multiple radiographic views of the cervical spine in comparison with MDCT scans in pediatric trauma and to determine whether evaluation of additional views, in relation to lateral views alone, improves the performance of radiography. ⋯ Lateral view radiographs had a borderline acceptable sensitivity to cervical spine abnormalities in pediatric patients compared with MDCT. The addition of other radiographic views did not seem to improve the diagnostic performance of radiography.
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AJR Am J Roentgenol · Jan 2010
Multicenter StudyNeuroendocrine cell hyperplasia of infancy: diagnosis with high-resolution CT.
Neuroendocrine cell hyperplasia of infancy is a form of childhood interstitial lung disease originally reported as persistent tachypnea of infancy. Reports of small series of cases and anecdotal experience have suggested that this disorder may have a consistent CT pattern. The purpose of this study was to review the CT findings in children with neuroendocrine cell hyperplasia of infancy to determine the findings at high-resolution CT, the diagnostic accuracy of CT compared with biopsy, and interrater reliability. ⋯ Neuroendocrine cell hyperplasia of infancy can have a characteristic appearance on high-resolution CT scans, the imaging findings being useful in differentiating neuroendocrine cell hyperplasia of infancy from other types of childhood interstitial lung disease. The appearance aids radiologists in suggesting a specific diagnosis but does not exclude this diagnosis; in 17-22% of cases, the readers in this study did not suggest the diagnosis of neuroendocrine cell hyperplasia of infancy when it was present.
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AJR Am J Roentgenol · Jan 2010
Unilateral lumbar spondylolysis on radiography and MRI: emphasis on morphologic differences according to involved segment.
The objective of our study was to retrospectively compare the radiography and MRI findings of unilateral spondylolysis in the upper lumbar segment and in the lower lumbar segment and to consider how these radiologic findings can be applied in the diagnosis of unilateral spondylolysis. ⋯ Unilateral lumbar spondylolysis displayed radiologic differences in morphology of the isthmic defect itself and in ancillary findings of the adjacent structures based on the segment involved. Recognition of different ancillary features of unilateral spondylolysis with the use of a feasible diagnostic tool can be helpful for the diagnosis of cases in which a direct sign of isthmic defect is equivocal.