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Detection of urolithiasis using low-dose CT : a noise simulation study

Niemann, T. and Van Straten, M. and Resinger, C. and Bayer, T. and Bongartz, Georg. (2011) Detection of urolithiasis using low-dose CT : a noise simulation study. European journal of radiology, Vol. 80, H. 2. pp. 213-218.

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Official URL: http://edoc.unibas.ch/dok/A6006987

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Abstract

How does an acquisition at reduced doses using automatic tube current modulation techniques compare to the normal standard dose CT? Does it affect the sensitivity for detection of calcifications? CT raw data of 54 patients with suspected urolithiasis acquired with automatic tube current modulation techniques were used for image noise simulations with 100%, 50% and 25% dose simulated. Data were analyzed by independent readers with regard to the presence of urolithiasis, stone location, size, density and differential diagnoses. The mean effective dose per standard examination/50%/25% simulation was 7.3 mSv/3.8 mSv/1.9 mSv. Sensitivities/specificities for detection of urolithiasis were calculated for all dose simulations and resulted in 0.94/0.98 in the 50% dose level group and 0.82/0.97 in the 25% dose level group. Low-dose CT with tube current modulation can be used as a standard procedure for the evaluation of patients with suspected acute renal colic.
Faculties and Departments:03 Faculty of Medicine > Bereich Querschnittsfächer (Klinik) > Ehemalige Einheiten Querschnittsfächer (Klinik) > Medizinische Radiologie (Steinbrich)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Querschnittsfächer (Klinik) > Ehemalige Einheiten Querschnittsfächer (Klinik) > Medizinische Radiologie (Steinbrich)
UniBasel Contributors:Bongartz, Georg
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Elsevier Science
ISSN:0720-048X
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:13 Sep 2013 07:59
Deposited On:13 Sep 2013 07:48

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