Purpose: To test the potential ability of mean diffusivity (MD) and fractional anisotropy (FA) in discriminating between PCa of grade group (GG) 1&2, and GGs≥3. Material and methods: Diffusion Tensor Imaging (DTI) experiments at 3T in a cohort of 38 patients with PCa (fifty lesions in total) were performed, by using different diffusion weights (b values) up to 2500s/mm(2). Gleason score (GS) and GG data were correlated with DTI parameters (MD and FA) estimated in PCa. The relation between DTI measures and GS was tested by the linear correlation analysis (Pearson's coefficient). One-way analysis of variance to check the statistical significance of the difference between GG 1&2 and GGs 3, 4, 5, ≥3 was used. Results were reported for each of the three b-values ranges: 0-800s/mm(2), 0-1500s/mm(2), 0-2500s/mm(2). Results: A negative correlation was found between MD and GS. The highest linear correlation was observed when the fit was performed with data acquired in the b-values range 0-2500s/mm(2). MD values were significantly different between GG 1&2 and GG=3 and between GG 1&2 and GG ≥3. Moreover this difference is better defined when high b values (higher than b=800s/mm(2)) are used. The specificity, sensitivity and accuracy in the discrimination between GG 1&2 and GG=3 were: 90%, 66.7% and 82.4%, respectively when MD was estimated in the b-values range 0-2500s/mm(2) while these values were 85%, 58.3% and 78.4% when MD was estimated in the b-values range 0-800s/mm(2). Conversely FA did not discriminate between GG 1&2 and GG ≥3, at any investigated b-values range. Conclusion: This study suggests that MD estimation in PCa, obtained from DTI acquired at high b-values, can contribute to the diagnosis and grading of prostate cancer while FA is not a useful parameter for this purpose.

Nezzo, M., Di Trani, M.g., Caporale, A., Miano, R., Mauriello, A., Bove, P., et al. (2016). Mean diffusivity discriminates between prostate cancer with grade group 1&2 and grade groups equal to or greater than 3. EUROPEAN JOURNAL OF RADIOLOGY, 85(10), 1794-1801 [10.1016/j.ejrad.2016.08.001].

Mean diffusivity discriminates between prostate cancer with grade group 1&2 and grade groups equal to or greater than 3

Nezzo M.;Miano R.;Mauriello A.;Bove P.;Manenti G.
2016-01-01

Abstract

Purpose: To test the potential ability of mean diffusivity (MD) and fractional anisotropy (FA) in discriminating between PCa of grade group (GG) 1&2, and GGs≥3. Material and methods: Diffusion Tensor Imaging (DTI) experiments at 3T in a cohort of 38 patients with PCa (fifty lesions in total) were performed, by using different diffusion weights (b values) up to 2500s/mm(2). Gleason score (GS) and GG data were correlated with DTI parameters (MD and FA) estimated in PCa. The relation between DTI measures and GS was tested by the linear correlation analysis (Pearson's coefficient). One-way analysis of variance to check the statistical significance of the difference between GG 1&2 and GGs 3, 4, 5, ≥3 was used. Results were reported for each of the three b-values ranges: 0-800s/mm(2), 0-1500s/mm(2), 0-2500s/mm(2). Results: A negative correlation was found between MD and GS. The highest linear correlation was observed when the fit was performed with data acquired in the b-values range 0-2500s/mm(2). MD values were significantly different between GG 1&2 and GG=3 and between GG 1&2 and GG ≥3. Moreover this difference is better defined when high b values (higher than b=800s/mm(2)) are used. The specificity, sensitivity and accuracy in the discrimination between GG 1&2 and GG=3 were: 90%, 66.7% and 82.4%, respectively when MD was estimated in the b-values range 0-2500s/mm(2) while these values were 85%, 58.3% and 78.4% when MD was estimated in the b-values range 0-800s/mm(2). Conversely FA did not discriminate between GG 1&2 and GG ≥3, at any investigated b-values range. Conclusion: This study suggests that MD estimation in PCa, obtained from DTI acquired at high b-values, can contribute to the diagnosis and grading of prostate cancer while FA is not a useful parameter for this purpose.
2016
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore MED/08 - ANATOMIA PATOLOGICA
English
Diffusion tensor imaging; Grade group; MD; Magnetic resonance imaging; Prostate cancer; Analysis of Variance; Anisotropy; Humans; Male; Middle Aged; Neoplasm Grading; Prostatic Neoplasms; Reproducibility of Results; Retrospective Studies; Sensitivity and Specificity; Diffusion Tensor Imaging
Nezzo, M., Di Trani, M.g., Caporale, A., Miano, R., Mauriello, A., Bove, P., et al. (2016). Mean diffusivity discriminates between prostate cancer with grade group 1&2 and grade groups equal to or greater than 3. EUROPEAN JOURNAL OF RADIOLOGY, 85(10), 1794-1801 [10.1016/j.ejrad.2016.08.001].
Nezzo, M; Di Trani, Mg; Caporale, A; Miano, R; Mauriello, A; Bove, P; Capuani, S; Manenti, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/241583
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