Journal of computer assisted tomography
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J Comput Assist Tomogr · Sep 2014
Randomized Controlled TrialRole of compressive sensing technique in dose reduction for chest computed tomography: a prospective blinded clinical study.
The purpose of this study was to assess pulmonary lesion detection, diagnostic confidence, and noise reduction in sparse-sampled (SpS) computed tomographic (CT) data of submillisievert (SubmSv) chest CT reconstructed with iterative reconstruction technique (IRT). ⋯ More than 90% dose reduction could be achieved with one-fourth sparse-sampled and SubmSv chest CT examination when reconstructed with IRT. Chest CT dose at one fourth of a millisievert with SpS is possible with optimal lesion detection and diagnostic confidence for the evaluation of pulmonary findings.
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J Comput Assist Tomogr · Mar 2011
Randomized Controlled Trial Comparative StudyProspective randomized trial of iohexol 350 versus meglumine sodium diatrizoate as an oral contrast agent for abdominopelvic computed tomography.
To compare the efficacy and patient tolerance of iohexol and meglumine sodium diatrizoate as oral contrast agents for computed tomography (CT). ⋯ Iohexol 350 is a satisfactory oral contrast agent for abdominopelvic CT. It opacifies the gastrointestinal tract as well as meglumine sodium diatrizoate does, and patients prefer the taste of iohexol to that of diatrizoate.
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J Comput Assist Tomogr · May 2009
Randomized Controlled TrialMultidetector computed tomography chest examinations with low-kilovoltage protocols in adults: effect on image quality and radiation dose.
The purpose of our study was to assess the effect on image quality and radiation dose of chest multidetector computed tomography (CT) examinations with low-kilovoltage protocols for adults. ⋯ The use of low-kilovoltage protocol resulted in a significant reduction in the radiation exposure at chest CT, with image qualities comparable with those of the standard protocols.
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J Comput Assist Tomogr · Mar 2006
Randomized Controlled TrialDetermining the optimal timing for early arterial phase hepatic CT imaging by measuring abdominal aortic enhancement in variable contrast injection protocols.
To find the optimal scan timing for early arterial phase hepatic CT with adequate arterial enhancement after the aortic contrast arrival. ⋯ The optimal timing of the early arterial phase for hepatic CT arteriography is 10-15 seconds after the aortic arrival.