T1-hyperintense renal lesions: can high signal predict lack of enhancement?

Verfasser / Beitragende:
[Jenna Le, Milana Flusberg, Alla Rozenblit, Victoria Chernyak]
Ort, Verlag, Jahr:
2015
Enthalten in:
Abdominal Imaging, 40/8(2015-10-01), 3175-3181
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00261-015-0539-0  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00261-015-0539-0 
245 0 0 |a T1-hyperintense renal lesions: can high signal predict lack of enhancement?  |h [Elektronische Daten]  |c [Jenna Le, Milana Flusberg, Alla Rozenblit, Victoria Chernyak] 
520 3 |a Objective: To establish highly specific criteria for predicting non-enhancement in T1-hyperintense non-fat-containing (T1-high) renal lesions using unenhanced fat-suppressed T1-weighted (T1-FS) images. Materials and methods: This IRB-approved, HIPAA-compliant, retrospective study included T1-high renal lesions found between 7/1/2012 and 7/1/2014. The largest lesion diameter and heterogeneity, mean signal intensity of lesion, and adjacent renal cortex were recorded from T1-FS images. The presence/absence of lesion enhancement was determined from subtraction images. T1 signal ratio (T1-SR) was calculated as (mean SI of lesion)/(mean SI of cortex). Logistic regression with binary outcome of the presence or absence of lesion enhancement was performed. Cut-off T1-SR to maximize specificity was established from receiver operator curve analysis. Results: There were 101 patients (58 [57.4%] male) with non-enhancing lesions and 80 patients (51 [63.8%] male) with enhancing lesions, mean ages 64.0±13.3 and 62.1±13.8years, respectively. Median sizes were 11mm (IQR 8-16) and 20.5mm (IQR 15-29) for non-enhancing and enhancing lesions, respectively (p<0.0001). 19/101 (18.8%) of non-enhancing and 56/80 (70.0%) of enhancing lesions were heterogeneous (p<0.0001). T1-SR was 1.77±0.6 and 1.25±0.42 for non-enhancing and enhancing lesions, respectively (p<0.0001). For each increase of 0.5 in T1-SR, odds ratio for non-enhancement was 3.3 (95% CI 1.85-5.79), adjusted for lesion size and heterogeneity. T1-SR alone had area under the curve of 0.88 (95% CI 0.78-10.89) for non-enhancement. T1-SR ≥2.15 had positive likelihood ratio of 9.5 for non-enhancement. Conclusion: Signal ratio of lesion to cortex ≥2.15 on unenhanced T1-weighted images is a highly specific predictor for non-enhancement. 
540 |a Springer Science+Business Media New York, 2015 
690 7 |a Renal masses  |2 nationallicence 
690 7 |a Renal cell carcinoma  |2 nationallicence 
690 7 |a Renal cysts  |2 nationallicence 
690 7 |a Incidentalomas  |2 nationallicence 
700 1 |a Le  |D Jenna  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
700 1 |a Flusberg  |D Milana  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
700 1 |a Rozenblit  |D Alla  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
700 1 |a Chernyak  |D Victoria  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
773 0 |t Abdominal Imaging  |d Springer US; http://www.springer-ny.com  |g 40/8(2015-10-01), 3175-3181  |x 0942-8925  |q 40:8<3175  |1 2015  |2 40  |o 261 
856 4 0 |u https://doi.org/10.1007/s00261-015-0539-0  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00261-015-0539-0  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Le  |D Jenna  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Flusberg  |D Milana  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Rozenblit  |D Alla  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Chernyak  |D Victoria  |u Department of Radiology, Montefiore Medical Center, 111 E. 210th St., 10467, Bronx, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Abdominal Imaging  |d Springer US; http://www.springer-ny.com  |g 40/8(2015-10-01), 3175-3181  |x 0942-8925  |q 40:8<3175  |1 2015  |2 40  |o 261