Clinical radiology
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Randomized Controlled Trial
Reducing contrast medium volume and tube voltage in CT angiography of the pulmonary artery.
To evaluate image quality after contrast medium (CM) and tube voltage reduction in computed tomography angiography (CTA) of the pulmonary artery. ⋯ Low tube voltage (80 kV) CTA using 50 ml CM is not inferior to CTA at 120 kV using 100 ml CM.
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Randomized Controlled Trial
Combining low tube voltage and iterative reconstruction for contrast-enhanced CT imaging of the chest-initial clinical experience.
To evaluate the image quality of contrast-enhanced chest computed tomography (CT) with low tube voltage settings using an iterative reconstruction algorithm (iDose4) and standard dose filtered back projection (FBP) CT in patients with normal body mass index (BMI). ⋯ Compared with standard FBP reconstruction, the iDose4 iterative reconstruction yields higher SNR, CNR, and better image quality in contrast-enhanced chest CT with low tube voltage settings.
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Randomized Controlled Trial
Radiation dose of non-enhanced chest CT can be reduced 40% by using iterative reconstruction in image space.
To evaluate the image quality and dose reduction capability of non-enhanced chest computed tomography (CT) examinations using iterative reconstruction in image space (IRIS). ⋯ Compared with FBP, IRIS can maintain or improve image quality on unenhanced chest CT image reconstruction while saving 40% radiation dose.
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Randomized Controlled Trial
Does ultrasound-guided lidocaine injection improve local anaesthesia before femoral artery catheterization?
To present the results of a prospective, randomized, single-centre study investigating local anaesthesia before percutaneous common femoral artery (CFA) puncture and catheterization with the use of ultrasound-guided injection of lidocaine versus standard infiltration by manual palpation. ⋯ Ultrasound-guided local anaesthesia of the CFA prior to percutaneous transcatheter procedures is safe and achieves superior levels of analgesia with minimal patient pain and discomfort compared to the standard method of manual palpation.
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Randomized Controlled Trial Multicenter Study
Self-administered, inhaled methoxyflurane improves patient comfort during nasoduodenal intubation for computed tomography enteroclysis for suspected small bowel disease: a randomized, double-blind, placebo-controlled trial.
To determine the efficacy and safety of self-administered, inhaled analgesic, methoxyflurane, used to improve patient comfort during computed tomography enteroclysis (CTE). ⋯ Inhalational methoxyflurane safely improves patient comfort during nasoduodenal intubation, but does not improve overall procedure comfort.