caa a22 4500 605540063 CHVBK 20210128100910.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10396-014-0599-8 doi (NATIONALLICENCE)springer-10.1007/s10396-014-0599-8 The reliability of color doppler "twinkling” artifact for diagnosing millimetrical nephrolithiasis: comparison with B-Mode US and CT scanning results [Elektronische Daten] [Alpaslan Yavuz, Kagan Ceken, Emel Alimoglu, Adnan Kabaalioglu] Purpose: To compare the effectiveness of B-Mode and color-Doppler ultrasound imaging features, including "twinkling-artifact” with unenhanced CT for detecting millimetrical nephrolithiasis. Methods: 397 patients were examined for suspected urolithiasis with US and CT were included. US findings such as echogenic focuses, posterior acoustic shadowing and twinkling artifact were examined for their ability to detect millimetricalcalculies (greatest diameter ≤5mm) using CT findings as the gold-standard. The accuracy of US for measuring stone size was also investigated. Results: 219 millimetriccalculies in 164 cases were detected by CT. The sensitivity and positive-predictive-values for the detection of microcalculies were 76.7 and 94.9%, 85.8 and 88.3%, 40.6 and 97.8%, 68.9 and 94.4%, and 38.4 and 97.7% for the presence of B-Mode echogenity, twinkling-artifact, B-Mode echogenity with acoustic shadowing, B-Mode echogenity with twinkling-artifact, B-Mode echogenity with acoustic shadowing and twinkling-artifact, respectively. No significant difference between US and CT was observed in quantification of nephrolithiasis sizes (p=913). Conclusion: Twinkling-artifact based color-Doppler US is preferable for the sensitive detection of millimetrical nephrolithiasis; however, the high false-positive value of this technique, which can lead to an overestimation of the stone number, has to be considered. The Japan Society of Ultrasonics in Medicine, 2014 Ultrasound nationallicence Twinkling artifact nationallicence Unenhanced computed tomography nationallicence Nephrolithiasis nationallicence Yavuz Alpaslan Department of Radiology, School of Medical Science, Yuzuncu Yil University, ErcisYolu, 65100, Van, Turkey aut Ceken Kagan Department of Radiology, School of Medical Science, Akdeniz University, Dumlupinar Cad, Kampüs, 07059, Antalya, Turkey aut Alimoglu Emel Department of Radiology, School of Medical Science, Akdeniz University, Dumlupinar Cad, Kampüs, 07059, Antalya, Turkey aut Kabaalioglu Adnan Department of Radiology, School of Medical Science, Akdeniz University, Dumlupinar Cad, Kampüs, 07059, Antalya, Turkey aut Journal of Medical Ultrasonics Springer Japan 42/2(2015-04-01), 215-222 1346-4523 42:2<215 2015 42 10396 https://doi.org/10.1007/s10396-014-0599-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10396-014-0599-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yavuz Alpaslan Department of Radiology, School of Medical Science, Yuzuncu Yil University, ErcisYolu, 65100, Van, Turkey aut NATIONALLICENCE 700 1- Ceken Kagan Department of Radiology, School of Medical Science, Akdeniz University, Dumlupinar Cad, Kampüs, 07059, Antalya, Turkey aut NATIONALLICENCE 700 1- Alimoglu Emel Department of Radiology, School of Medical Science, Akdeniz University, Dumlupinar Cad, Kampüs, 07059, Antalya, Turkey aut NATIONALLICENCE 700 1- Kabaalioglu Adnan Department of Radiology, School of Medical Science, Akdeniz University, Dumlupinar Cad, Kampüs, 07059, Antalya, Turkey aut NATIONALLICENCE 773 0- Journal of Medical Ultrasonics Springer Japan 42/2(2015-04-01), 215-222 1346-4523 42:2<215 2015 42 10396