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Erschienen in: European Radiology 3/2009

01.03.2009 | Urogenital

Evaluation of T2-weighted and dynamic contrast-enhanced MRI in localizing prostate cancer before repeat biopsy

verfasst von: Alexandre Ben Cheikh, Nicolas Girouin, Marc Colombel, Jean-Marie Maréchal, Albert Gelet, Alvine Bissery, Muriel Rabilloud, Denis Lyonnet, Olivier Rouvière

Erschienen in: European Radiology | Ausgabe 3/2009

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Abstract

We assessed the accuracy of T2-weighted (T2w) and dynamic contrast-enhanced (DCE) 1.5-T magnetic resonance imaging (MRI) in localizing prostate cancer before transrectal ultrasound-guided repeat biopsy. Ninety-three patients with abnormal PSA level and negative prostate biopsy underwent T2w and DCE prostate MRI using pelvic coil before repeat biopsy. T2w and DCE images were interpreted using visual criteria only. MR results were correlated with repeat biopsy findings in ten prostate sectors. Repeat biopsy found prostate cancer in 23 patients (24.7%) and 44 sectors (6.6%). At per patient analysis, the sensitivity, specificity, positive and negative predictive values were 47.8%, 44.3%, 20.4% and 79.5% for T2w imaging and 82.6%, 20%, 24.4% and 93.3% for DCE imaging. When all suspicious areas (on T2w or DCE imaging) were taken into account, a sensitivity of 82.6% and a negative predictive value of 100% could be achieved. At per sector analysis, DCE imaging was significantly less specific (83.5% vs. 89.7%, p < 0.002) than T2w imaging; it was more sensitive (52.4% vs. 32.1%), but the difference was hardly significant (p = 0.09). T2w and DCE MRI using pelvic coil and visual diagnostic criteria can guide prostate repeat biopsy, with a good sensitivity and NPV.
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Metadaten
Titel
Evaluation of T2-weighted and dynamic contrast-enhanced MRI in localizing prostate cancer before repeat biopsy
verfasst von
Alexandre Ben Cheikh
Nicolas Girouin
Marc Colombel
Jean-Marie Maréchal
Albert Gelet
Alvine Bissery
Muriel Rabilloud
Denis Lyonnet
Olivier Rouvière
Publikationsdatum
01.03.2009
Verlag
Springer-Verlag
Erschienen in
European Radiology / Ausgabe 3/2009
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-008-1190-8

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