Radiology
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Comparative Study
Contrast-enhanced MR imaging of coronary arteries: comparison of intra- and extravascular contrast agents in swine.
To compare the efficacy of an intravascular contrast agent, gadomer-17, in improving magnetic resonance (MR) imaging of coronary arteries with that of an extravascular agent, gadopentetate dimeglumine, in pigs. ⋯ Gadomer-17 provided greater and more persistent CNR improvements than did gadopentetate dimeglumine; further evaluation of its utility for coronary imaging in humans is warranted.
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Comparative Study
Acute respiratory distress syndrome caused by pulmonary and extrapulmonary injury: a comparative CT study.
To determine computed tomographic (CT) differences between acute respiratory distress syndrome (ARDS) due to pulmonary injury (ARDS(p)) and extrapulmonary injury (ARDS(ex)). ⋯ The differentiation between ARDS(p) and ARDS(ex) can, with some caveats, be based on whether the CT appearances are typical or atypical of ARDS but not on any individual CT pattern in isolation.
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Thirty-two patients underwent periradicular corticosteroid injections with a lateral percutaneous approach under fluoroscopic guidance, to treat 34 foci of chronic cervical radiculopathy unresponsive to medical treatment alone. The mean evolutionary trends for radicular and neck pain relief were significant at 14 days (P <.001) and at 6 months (P <.001). The procedure did not produce any complications.
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To evaluate the usefulness and limitations of the outer diameter of the vermiform appendix at cross-sectional ultrasonography to confirm or rule out acute appendicitis. ⋯ The outer appendiceal diameter of 6 mm or more as a sign of acute appendicitis provides high sensitivity but limited specificity. This diagnostic criterion is more useful in excluding acute appendicitis than in confirming it.