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Article: Renal cysts: Is attenuation artifactually increased on contrast-enhanced CT images?

TitleRenal cysts: Is attenuation artifactually increased on contrast-enhanced CT images?
Authors
KeywordsComputed tomography (CT), contrast enhancement
Computed tomography (CT), helical
Kidney, CT
Kidney, cysts
Issue Date2000
Citation
Radiology, 2000, v. 216, n. 3, p. 792-796 How to Cite?
AbstractPURPOSE: To determine if the attenuation values of simple renal cysts are artifactually increased on contrast material-enhanced, clinically acquired spiral computed tomographic (CT) images. MATERIALS AND METHODS: Dual-phase renal spiral CT studies (5-mm collimation; pitch, 1.0) were retrospectively analyzed in 24 consecutive patients who had ultrasonographic (US) documentation of simple renal cysts. Forty-eight cysts were identified. The attenuation values of each cyst were measured on nonenhanced, cortical phase, and nephrographic phase images. The size and the location of each cyst in relation to the renal parenchyma were also recorded. RESULTS: The cysts were 0.6-10.8 cm in diameter (mean, 2.6 cm; SD, 2.0). The mean attenuation change in the cysts from nonenhanced to contrast-enhanced images was statistically significant in a comparison of cortical phase and nephrographic phase images (P < .01): +1.8 HU (SD, 3.8) for cortical phase and +3.6 HU (SD, 5.6) for nephrographic phase images. Renal cysts 1.0 cm or smaller showed a higher attenuation increase (mean, +4.0 HU for cortical phase and +11.0 HU for nephrographic phase). None of the renal cysts larger than 1.0 cm demonstrated an increase greater than 10 HU (mean, +1.4 HU for cortical phase and +2.3 HU for nephrographic phase). Intraparenchymal cysts showed higher mean attenuation changes than the exophytic cysts. CONCLUSION: Attenuation values in the renal cysts increased artifactually on contrast-enhanced images, but this pseudoenhancement was not substantial and was less than 10 HU when the cyst was larger than 1.0 cm in diameter.
Persistent Identifierhttp://hdl.handle.net/10722/316157
ISSN
2023 Impact Factor: 12.1
2023 SCImago Journal Rankings: 3.692
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorBae, K. T.-
dc.contributor.authorHeiken, J. P.-
dc.contributor.authorSiegel, C. L.-
dc.contributor.authorBennett, H. F.-
dc.date.accessioned2022-08-24T15:49:26Z-
dc.date.available2022-08-24T15:49:26Z-
dc.date.issued2000-
dc.identifier.citationRadiology, 2000, v. 216, n. 3, p. 792-796-
dc.identifier.issn0033-8419-
dc.identifier.urihttp://hdl.handle.net/10722/316157-
dc.description.abstractPURPOSE: To determine if the attenuation values of simple renal cysts are artifactually increased on contrast material-enhanced, clinically acquired spiral computed tomographic (CT) images. MATERIALS AND METHODS: Dual-phase renal spiral CT studies (5-mm collimation; pitch, 1.0) were retrospectively analyzed in 24 consecutive patients who had ultrasonographic (US) documentation of simple renal cysts. Forty-eight cysts were identified. The attenuation values of each cyst were measured on nonenhanced, cortical phase, and nephrographic phase images. The size and the location of each cyst in relation to the renal parenchyma were also recorded. RESULTS: The cysts were 0.6-10.8 cm in diameter (mean, 2.6 cm; SD, 2.0). The mean attenuation change in the cysts from nonenhanced to contrast-enhanced images was statistically significant in a comparison of cortical phase and nephrographic phase images (P < .01): +1.8 HU (SD, 3.8) for cortical phase and +3.6 HU (SD, 5.6) for nephrographic phase images. Renal cysts 1.0 cm or smaller showed a higher attenuation increase (mean, +4.0 HU for cortical phase and +11.0 HU for nephrographic phase). None of the renal cysts larger than 1.0 cm demonstrated an increase greater than 10 HU (mean, +1.4 HU for cortical phase and +2.3 HU for nephrographic phase). Intraparenchymal cysts showed higher mean attenuation changes than the exophytic cysts. CONCLUSION: Attenuation values in the renal cysts increased artifactually on contrast-enhanced images, but this pseudoenhancement was not substantial and was less than 10 HU when the cyst was larger than 1.0 cm in diameter.-
dc.languageeng-
dc.relation.ispartofRadiology-
dc.subjectComputed tomography (CT), contrast enhancement-
dc.subjectComputed tomography (CT), helical-
dc.subjectKidney, CT-
dc.subjectKidney, cysts-
dc.titleRenal cysts: Is attenuation artifactually increased on contrast-enhanced CT images?-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1148/radiology.216.3.r00se14792-
dc.identifier.pmid10966713-
dc.identifier.scopuseid_2-s2.0-0033845970-
dc.identifier.volume216-
dc.identifier.issue3-
dc.identifier.spage792-
dc.identifier.epage796-
dc.identifier.isiWOS:000088964900027-

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