| Discrimination between ureteral stent and stone by non-contrast helical computed tomography in the clinical setting. | |
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MedLine Citation:
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PMID: 17302579 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: In urolithiasis with indwelling ureteral stent, an adequate visualization of retained stone is often obscured by the stent. In functional solitary kidney, it is essential to detect retained fragments before stent removal. We examined the capability of non-contrast helical computed tomography (NCHCT) in discriminating stone from stent. PATIENTS AND METHODS: We assessed the CT of 21 radiopaque stones of 3-5 mm and four stents, and compared their attenuation values. In addition, two other cases with stent, in which only NCHCT by manipulating the setting could detect retained fragments. RESULTS: No overlaps of attenuation value were found between the stones and stents. Although they had the same appearance in NCHCT with abdominal-window setting, in bone-window setting the contrasts of stones were reduced, while stents were still bright white. CONCLUSIONS: We would discriminate the residual stone from the stent by manipulating window and level setting, and bone-window setting is easy to use. |
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Authors:
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Soichiro Yoshida; Tetsuo Hayashi; Takemichi Okada; Hisato Osada; Norinari Honda; Takumi Yamada |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of urology : official journal of the Japanese Urological Association Volume: 14 ISSN: 0919-8172 ISO Abbreviation: Int. J. Urol. Publication Date: 2007 Feb |
Date Detail:
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Created Date: 2007-02-16 Completed Date: 2007-05-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9440237 Medline TA: Int J Urol Country: Australia |
Other Details:
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Languages: eng Pagination: 171-3 Citation Subset: IM |
Affiliation:
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Department of Urology, Saitama Medical Center, Saitama Medical School, Kawagoe, Saitama, Japan. soichiroyoshida2000@yahoo.co.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Diagnosis, Differential Foreign Bodies / radiography* Humans Stents* Tomography, X-Ray Computed* Ureteral Calculi / radiography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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