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Segmented diffusion-weighted imaging of the prostate: Application to transperineal in-bore 3T MR image-guided targeted biopsy
| Content Provider | Scilit |
|---|---|
| Author | Fedorov, Andriy Tuncali, Kemal Panych, Lawrence P. Fairhurst, Janice Hassanzadeh, Elmira Seethamraju, Ravi T. Tempany, Clare M. Maier, Stephan E. |
| Copyright Year | 2016 |
| Description | Journal: Magnetic resonance imaging This study aims to evaluate the applicability of using single-shot and multi-shot segmented diffusion-weighted imaging (DWI) techniques to support biopsy target localization in a cohort of targeted MRI-guided prostate biopsy patients. Single-shot echo-planar diffusion-weighted imaging (SS-DWI) and multi-shot segmented (MS-DWI) were performed intra-procedurally on a 3Tesla system in a total of 35 men, who underwent in-bore prostate biopsy inside the scanner bore. Comparisons between SS-DWI and MS-DWI were performed with (in 16 men) and without (in 19 men) parallel coil acceleration (iPAT) for SS-DWI. Overall image quality and artifacts were scored by a radiologist and scores were compared with the Wilcoxon-Mann-Whitney rank test. Correlation between the presence of air and image quality scores was evaluated with Spearman statistics. To quantify distortion, the anteroposterior prostate dimension was measured in SS and MS b=0 diffusion- and T2-weighted images. Signal-to-noise ratio was estimated in a phantom experiment. Agreement and accuracy of targeting based on retrospective localization of restricted diffusion areas in DWI was evaluated with respect to the targets identified using multi-parametric MRI (mpMRI). Compared to SS-DWI without iPAT, the average image quality score in MS-DWI improved from 2.0 to 3.3 (p0.05). MS-DWI applied to prostate imaging leads to a significant reduction of image distortion in comparison with SS-DWI. There is no sufficient evidence however to suggest that intra-procedural DWI can serve as a replacement for tracking of the targets identified in mpMRI for the purposes of targeted MRI-guided prostate biopsy. |
| Related Links | http://europepmc.org/articles/pmc4993653?pdf=render https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4993653/pdf |
| Ending Page | 1154 |
| Page Count | 9 |
| Starting Page | 1146 |
| ISSN | 0730725X |
| e-ISSN | 18735894 |
| DOI | 10.1016/j.mri.2016.05.012 |
| Journal | Magnetic resonance imaging |
| Issue Number | 8 |
| Volume Number | 34 |
| Language | English |
| Publisher | Elsevier BV |
| Publisher Date | 2016-10-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Magnetic resonance imaging Radiology, Nuclear Medicine and Imaging Diffusion Weighted Imaging Image Distortion Image-guided Interventions Image-guided Prostate Biopsy Magnetic Resonance Imaging Prostate Cancer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Radiology, Nuclear Medicine and Imaging Biophysics Biomedical Engineering |
