Acceptance testing of Computed Radiography systems
Riccardi, L.; Cauzzo, M.C.; Fabbris, R.
La Radiologia Medica 110(5-6): 676-688
2006
ISSN/ISBN: 0033-8362 PMID: 16437057 Document Number: 595040
Implementing public health surveillance at mass gatherings might help detect outbreaks or possible acts of biologic terrorism and enable prompt public health intervention. In July 2005, a daily syndromic sentinel surveillance system was implemented to monitor disease and injury among approximately 43,000 youths and adults attending a 10-day camping event held every 4 years by a national youth organization. Camp activities began on July 25, 2005, and included events such as mountain boarding, rappelling, and whittling. This report describes public health surveillance and response activities during the 10-day event and presents recommendations for health surveillance at large outdoor events. Public health surveillance should be implemented at mass gatherings to facilitate rapid detection of outbreaks and other health-related events and enable public health teams to respond with timely control measures. To define the accuracy of Magnetic Resonance (MR) in the diagnosis of inferomedial displacement of the meniscal fragment. The MR examinations of the knee performed between December 2002 and April 2004 on 676 patients (mean age 32 years) with knee trauma and subsequently subjected to arthroscopy were retrospectively reviewed to assess the presence of bucket-handle meniscal tear and inferomedial displacement of the meniscal free fragment. The MR examinations were performed using a superconductive 0.5 T MR unit with a transmitting/receiving coil dedicated for the extremities. The MR images were acquired with SE T1 and GE T2* sequences in the sagittal, coronal and axial planes with 3 mm thickness and 1 mm gap. The images were independently reviewed by two authors blinded to the arthroscopic findings. In case of disagreement, a third author, unaware of the arthroscopic findings, gave his judgment. On MR images a bucket-handle meniscal tear was identified in 54/676 patients. In 6 out of 54 patients, an inferomedial meniscal fragment displacement of the medial meniscus with associated inflammatory synovial reaction around the fragment was detected. In one case an associated inflammatory bursal reaction with effusion around the distal insertion of the medial homolateral collateral ligament was detected. All cases were confirmed by arthroscopy and no statistical differences between the two authors were observed. MR allows the detection of the inferomedial meniscal fragment displacement and a more correct planning of arthroscopy with a strong reduction of repeat interventions.