AJR. American journal of roentgenology
-
AJR Am J Roentgenol · Apr 1996
Breast imaging reporting and data system standardized mammography lexicon: observer variability in lesion description.
The American College of Radiology has recommended the Breast Imaging Reporting and Data System (BI-RADS) as a standardized scheme for describing mammographic lesions. The objective of this study was to measure inter- and intraobserver variabilities of radiologists' descriptions of mammographic lesions with the BI-RADS standardized lexicon. ⋯ BI-RADS is moderately successful in providing a standardized language for physicians to describe lesion morphology. Efforts to reevaluate specific terms and the diagnostic significance assigned to calcification descriptors may prove useful in maintaining the promise of improved quality with the BI-RADS standardized mammography lexicon.
-
AJR Am J Roentgenol · Mar 1996
Comparative StudyT2-weighted spin-echo MR imaging of the liver: breath-hold fast spin-echo versus non-breath-hold fast spin-echo images with and without fat suppression.
The goal of our study was to compare a T2-weighted breath-hold fast spin-echo (BHSE) technique with T2-weighted non-breath-hold fast spin-echo techniques for imaging the liver. ⋯ The BHSE technique is quantitatively inferior to non-breath-hold fast spin-echo techniques. However, further studies with a surgical standard of reference are needed to compare the three techniques in terms of sensitivity.
-
AJR Am J Roentgenol · Mar 1996
Artifacts in chest radiographs with a third-generation computed radiography system.
Photostimulable phosphor computed radiography (CR) is a developing and increasingly widespread technology. The purpose of this pictorial essay is to familiarize readers with the appearance and cause of image artifacts that can occur in a third-generation computed radiographic system. Artifacts are described that relate to imaging plates, image readers, image processing, and film processing.
-
AJR Am J Roentgenol · Feb 1996
Comparative StudyComparison of upright inspiratory and expiratory chest radiographs for detecting pneumothoraces.
Expiratory films are regarded as being superior to inspiratory films for pneumothorax detection, yet this has not been proved. In the current study, we compared inspiratory versus expiratory chest radiographs for pneumothorax detection. ⋯ Inspiratory and expiratory upright films are equally sensitive for pneumothorax detection. Given the limitations of expiratory films, inspiratory films are recommended as the initial examination of choice for pneumothorax detection.
-
AJR Am J Roentgenol · Feb 1996
Comparative StudyDetection and estimation of the volume of pneumothorax using real-time sonography: efficacy determined by receiver operating characteristic analysis.
The purpose of this study was to determine the efficacy of real-time sonography for the detection and estimation of the volume of pneumothorax using receiver operating characteristic (ROC) analysis in 27 patients evaluated by five radiologists using previously described sonographic findings. ⋯ Real time sonography is useful to localize known pneumothorax but cannot be used to exclude the diagnosis. Moreover, sonography has a significant false-positive rate and is of no use in estimating the volume of a pneumothorax.