AJR. American journal of roentgenology
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The objective of our study was to compare the frequency of osseous and soft-tissue abnormalities in patients presenting with hip pain after resurfacing arthroplasty and after total hip arthroplasty (THA), correlate the MRI findings with histologic results, and determine which MRI findings are predictive of aseptic lymphocytic vasculitis-associated lesions. ⋯ Synovitis is common in patients with metal-on-metal hip prostheses and occurs with a similar incidence after resurfacing arthroplasty and after THA; osteolysis and extracapsular disease are uncommon. The MRI signs most suggestive of aseptic lymphocytic vasculitis-associated lesions are high volumes of synovitis, extracapsular disease, and intramuscular edema.
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AJR Am J Roentgenol · Oct 2012
Burden of alcohol-related injuries on radiology services at a level I trauma center.
The purpose of our study was to evaluate the burden of alcohol-related injuries on a radiology department at a level 1 trauma center. ⋯ Higher BAC was associated with increased CT utilization for most body region-specific CT scans and was more strongly associated in patients with less severe injuries. Any guideline that could potentially decrease unnecessary imaging for patients with alcohol-involved injuries would represent a cost-saving strategy.
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AJR Am J Roentgenol · Oct 2012
Second opinion interpretations by specialty radiologists at a pediatric hospital: rate of disagreement and clinical implications.
The objective of our study was to identify whether a substantive difference exists between the imaging interpretations of radiologists at outside referring institutions and those of radiologists at a tertiary care children's hospital and whether such reinterpretation affects the clinical management of pediatric patients. ⋯ Our findings suggest that discrepancy rates for second interpretations in studies of pediatric patients transferred to tertiary care pediatric institutions are substantial. Although the original and second interpretations in the majority of cases were in agreement, major discrepancies were prevalent--12.6% and 32.6% of neuroimaging and body studies, respectively--and the second interpretations were significantly correlated with the final diagnosis. These results indicate that interpretations by subspecialty radiologists at a point-of-care facility provide important clinical information about the pediatric patient and should be recognized by payers as integral to optimal care.
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The aim of this study was to determine whether a CT-based method shows lung lesions, grades disease severity, and evaluates lung tissue in areas adjacent to or remote from cysts in patients with lymphangioleiomyomatosis (LAM), a cystic lung disease that may cause respiratory failure and death. ⋯ A computational method that uses texture analysis and feature correlation can identify and quantify cystic areas where LAM exists and can detect abnormalities in areas near cysts. Pathologic data also show lung damage in areas adjacent to cysts. Several texture features correlate with lung function. Declines in lung function paralleled changes in texture features. In LAM, cystic changes alone may not define the extent of lung destruction.
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AJR Am J Roentgenol · Oct 2012
An intravoxel incoherent motion diffusion-weighted imaging study of prostate cancer.
The purpose of this study is to investigate whether the intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) parameters are different between prostate cancer, benign prostatic hyperplasia (BPH), and healthy peripheral zone (PZ). ⋯ IVIM DWI parameters are significantly different between prostate cancer and PZ. IVIM DWI may offer additional information for tissue characterization in the prostate gland.