Has pediatric CT at children's hospitals reached its peak?

Objective: CT volumes at our institution have declined since 2005. The purpose of this article is to discuss the existence of any corresponding national trend.

Conclusion: CT utilization as a percentage of cross-sectional imaging studies has decreased steadily since 2003 in pediatric facilities across North America.

Accuracy of cross-table lateral knee radiography for evaluation of joint effusions.

Objective: The purpose of our study was to investigate the efficacy of cross-table lateral knee radiography in the diagnosis of knee effusions compared with an MRI reference standard, to evaluate reader experience in effusion assessment, and to establish a new threshold for suprapatellar pouch measurement for the diagnosis of effusion.

Materials And Methods: First- and third-year radiology residents and an attending musculoskeletal radiologist retrospectively assessed 108 cross-table lateral knee radiographs for qualitative grading of joint fluid and quantitative measurement of the suprapatellar pouch. Qualitative and quantitative evaluation of ipsilateral knee MRI examinations performed within 1 week of radiography was performed by two attending musculoskeletal radiologists as a reference standard.

Current use of computed tomographic urography: survey of the society of uroradiology.

Objective: To determine uroradiologists' opinions and practices regarding computed tomographic (CT) urography.

Methods: A Web-based survey was sent via e-mail to all 259 members of the Society of Uroradiology. Of the 229 successfully delivered e-mails, 90 (39%) members responded.

Increasing memory load modulates regional brain activity in older adults as measured by fMRI.

Several recent studies using functional magnetic resonance imaging (fMRI) during recognition memory tests have suggested that the ability to neuromodulate as a function of cognitive demand may be impaired in older adults due to age-related cell loss and neural volume reduction in memory specific regions. In the current study, older adults (ages 59-77) were tested with fMRI during a delayed-recognition task in which memory load for faces was varied across trials. Activity was greater in amplitude for three- versus one-face stimuli within the superior, middle, and inferior frontal gyri, intraparietal sulcus, and fusiform gyrus.