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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Comparative Study
Bronchial and nonbronchial systemic arteries at multi-detector row CT angiography: comparison with conventional angiography.
To retrospectively evaluate bronchial and nonbronchial systemic arteries at multi-detector row helical computed tomography (CT) compared with conventional angiography in patients undergoing endovascular treatment of hemoptysis. ⋯ Multi-detector row helical CT angiography provides more precise depiction of bronchial and nonbronchial systemic arteries than does conventional angiography.
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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.