Radiology
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Comparative Study
MR imaging of human brain at 3.0 T: preliminary report on transverse relaxation rates and relation to estimated iron content.
To determine the transverse relaxation rates R2 and R2' from several gray matter regions and from frontal cortical white matter in healthy human brains in vivo and to determine the relationship between relaxation rates and iron concentration [Fe]. ⋯ The small iron-independent component R2', as compared with that of R2, is consistent with the hypothesis that R2' has higher iron-related specificity.
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To demonstrate that magnetic resonance (MR) imaging allows evaluation of injuries of the pectoralis major muscle. ⋯ MR imaging allows accurate evaluation of injuries of the pectoralis major muscle and enables identification of patients who would benefit from surgical repair.
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The authors assessed the feasibility of placing peripherally inserted central venous catheters via scalp veins in infants and newborns. In 60 newborns and infants, aged 3 days to 10 months, placement of 62 2-F peripherally inserted central venous catheters was attempted with scalpvein access. The tip location was central in 30 of the 62 catheters (48%) and long peripheral intravenous in 17 (27%); access failed in 15 (24%). Scalp-vein access for peripherally inserted central venous catheters offers a safe and effective alternative route for gaining central venous access in infants and newborns.
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To study the results of facet joint intraarticular steroid injections in patients with symptomatic lumbar facet joint synovial cysts. ⋯ One-third of patients with symptomatic lumbar facet joint synovial cysts had long-lasting acceptable benefit from facet joint steroid injections in this study. Steroid injection should be indicated before surgery.