AJR. American journal of roentgenology
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AJR Am J Roentgenol · Feb 2008
Comparative StudyDynamic oxygen-enhanced MRI versus quantitative CT: pulmonary functional loss assessment and clinical stage classification of smoking-related COPD.
The purpose of the present study is to prospectively compare the capability of dynamic oxygen-enhanced MRI and quantitative CT for pulmonary functional loss assessment and clinical stage classification of smoking-related chronic obstructive pulmonary disease (COPD). ⋯ Dynamic oxygen-enhanced MRI has potential for pulmonary functional loss assessment and clinical stage classification of smoking-related COPD as does quantitative CT.
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AJR Am J Roentgenol · Feb 2008
Comparative StudyProspective evaluation of image quality with use of a patient image gallery for dose reduction in pediatric 16-MDCT.
The purposes of this study were to evaluate prospective adjustment of dose settings in pediatric 16-MDCT by use of computer-simulated images in a patient image gallery and to compare the dose reduction achieved with that of standard pediatric protocols. ⋯ A patient image gallery can be used as a basis for pediatric 16-MDCT examinations. The gallery provides a preexamination overview of expected image quality. Radiation exposure can be optimized with regard to patient weight and the image quality needed to answer the clinical question.
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AJR Am J Roentgenol · Jan 2008
Allergic-like breakthrough reactions to gadolinium contrast agents after corticosteroid and antihistamine premedication.
The objective of our study was to determine the number and severity of allergic-like breakthrough reactions to i.v. gadolinium-containing contrast agents in children and adults after premedication with corticosteroids and antihistamines. ⋯ Allergic-like reactions to gadolinium-containing contrast media can occur despite premedication with corticosteroids and antihistamines.
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AJR Am J Roentgenol · Jan 2008
Comparative StudyComparison of three free-breathing T2-weighted MRI sequences in the evaluation of focal liver lesions.
The purpose of this study was to compare three free-breathing T2-weighted MRI sequences in the evaluation of focal liver lesions. ⋯ The navigator-triggered PACE technique is a valid method for T2-weighted MRI of the liver and may replace conventional respiration-triggered techniques.
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AJR Am J Roentgenol · Jan 2008
MDCT and radiography of wrist fractures: radiographic sensitivity and fracture patterns.
The purpose of our study was to determine which wrist fractures are not prospectively diagnosed at radiography using CT as a gold standard and to identify specific fracture patterns. ⋯ Thirty percent of wrist fractures were not prospectively diagnosed on radiography, suggesting that CT should be considered after a negative radiographic finding if clinically warranted. The location of a dorsal scaphoid avulsion fracture emphasizes the need for specific radiographic views or cross-sectional imaging for diagnosis.