Radiology
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Comparative Study
Acute lung injury: effects of prone positioning on cephalocaudal distribution of lung inflation--CT assessment in dogs.
To quantify cephalocaudal gradient of lung inflation in acute lung injury in a dog model in prone versus supine position. ⋯ In acute lung injury, prone positioning induced more uniform distribution of gas and tissue along cephalocaudal axis by reducing cephalocaudal inflation gradient.
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Randomized Controlled Trial Comparative Study Clinical Trial
Intravenous contrast material administration at 16-detector row helical CT coronary angiography: test bolus versus bolus-tracking technique.
To compare test bolus and bolus-tracking techniques for intravenous contrast material administration at 16-detector row computed tomographic (CT) coronary angiography. ⋯ Bolus-tracking yields more homogeneous enhancement than does the test bolus technique.
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Comparative Study
Metastatic colorectal carcinoma: cost-effectiveness of percutaneous radiofrequency ablation versus that of hepatic resection.
To evaluate the relative cost-effectiveness of radiofrequency (RF) ablation and hepatic resection in patients with metachronous liver metastases from colorectal carcinoma (CRC) and compare the outcomes, cost, and cost-effectiveness of a variety of treatment and follow-up strategies. ⋯ RF ablation is a cost-effective treatment option for patients with CRC liver metastases. However, in most scenarios, hepatic resection is more effective (in terms of QALYs gained) than RF ablation and has an incremental cost-effectiveness ratio of less than $35 000 per QALY.
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To compare the effectiveness and safety of oral (PO) versus intravenous (IV) pentobarbital sedation for magnetic resonance (MR) imaging and computed tomography (CT) in infants younger than 12 months. ⋯ PO pentobarbital has comparable effectiveness and a lower rate of respiratory complications compared with IV pentobarbital in infants younger than 12 months; its use should be considered, regardless of presence of an IV catheter.