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MRI for prostate cancer: can computed high b-value DWI replace native acquisitions?

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Title: MRI for prostate cancer: can computed high b-value DWI replace native acquisitions?
Authors: Jendoubi, Salma1, Wagner, Mathilde2,3, Montagne, Sarah1,2, Ezziane, Malek2, Mespoulet, Julien1, Comperat, Eva4,5, Estellat, Candice6, Baptiste, Amandine6, Renard-Penna, Raphaele1,2,5 raphaele.renardpenna@aphp.fr
Source: European Radiology. Oct2019, Vol. 29 Issue 10, p5197-5204. 8p. 1 Diagram, 5 Charts, 1 Graph.
Subjects: Endorectal ultrasonography, Prostate cancer, Dental caries, Prostate biopsy, Diffusion magnetic resonance imaging, Image analysis
Abstract: Objective: To compare computed high b-value diffusion-weighted images (c-DWI) derived from low b-value DWI images and acquired high b-value DWI (a-DWI), in overall image quality and prostate cancer detection rate.Materials and Methods: A total of 124 consecutive men with suspected prostate cancer (PCa) underwent diagnosis prostate MRI on a 3.0 T MR system using a 32-channel phased-array torso coil. Among them, 63 underwent prostate biopsy. MRI protocol included 3DT2w images, high resolution Fov Optimized and Constrained Undistorted Single-Shot (FOCUS™) DWI images with b-values of 100, 400, 800, and 2000 s/mm2 and dynamic contrast enhanced images. C-DWI images (2000 and 2500 s/mm2) were derived from the three lower acquired b-value DWI images using a mono-exponential diffusion decay. C-DWI and acquired high b-value DWI (a-DWI) (2000 s/mm2) were compared for image quality (background signal suppression, anatomic clarity, ghosting, distortion) and tumor conspicuity by four radiologists.Results: C-DWIs demonstrated higher rating than a-DWIs for overall image quality despite worsened ghosting. In patients with a biopsy, similar detection rate was observed while conspicuity was better with c-DWI (p < 0.001). Non-acquisition of high b-value a-DWI reduced total acquisition time by 220 s per patient.Conclusion: C-DWI provides a substantial reduction in acquisition time while maintaining comparable prostate cancer detection rate and improving global image quality.Key Points: • Computed DWI improves global quality of prostate MRI. • Computed DWI improves analysis of DWI images with decrease acquisition time. • Computed DWI provides greater background suppression of parenchyma and improves conspicuity of suspicious lesion. [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: MRI for prostate cancer: can computed high b-value DWI replace native acquisitions?
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Jendoubi%2C+Salma%22&quot;&gt;Jendoubi, Salma&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Wagner%2C+Mathilde%22&quot;&gt;Wagner, Mathilde&lt;/searchLink&gt;&lt;relatesTo&gt;2,3&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Montagne%2C+Sarah%22&quot;&gt;Montagne, Sarah&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Ezziane%2C+Malek%22&quot;&gt;Ezziane, Malek&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Mespoulet%2C+Julien%22&quot;&gt;Mespoulet, Julien&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Comperat%2C+Eva%22&quot;&gt;Comperat, Eva&lt;/searchLink&gt;&lt;relatesTo&gt;4,5&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Estellat%2C+Candice%22&quot;&gt;Estellat, Candice&lt;/searchLink&gt;&lt;relatesTo&gt;6&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Baptiste%2C+Amandine%22&quot;&gt;Baptiste, Amandine&lt;/searchLink&gt;&lt;relatesTo&gt;6&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Renard-Penna%2C+Raphaele%22&quot;&gt;Renard-Penna, Raphaele&lt;/searchLink&gt;&lt;relatesTo&gt;1,2,5&lt;/relatesTo&gt;&lt;i&gt; raphaele.renardpenna@aphp.fr&lt;/i&gt;
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22European+Radiology%22&quot;&gt;European Radiology&lt;/searchLink&gt;. Oct2019, Vol. 29 Issue 10, p5197-5204. 8p. 1 Diagram, 5 Charts, 1 Graph.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Endorectal+ultrasonography%22&quot;&gt;Endorectal ultrasonography&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Prostate+cancer%22&quot;&gt;Prostate cancer&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Dental+caries%22&quot;&gt;Dental caries&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Prostate+biopsy%22&quot;&gt;Prostate biopsy&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Diffusion+magnetic+resonance+imaging%22&quot;&gt;Diffusion magnetic resonance imaging&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Image+analysis%22&quot;&gt;Image analysis&lt;/searchLink&gt;
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  Data: &lt;bold&gt;Objective: &lt;/bold&gt;To compare computed high b-value diffusion-weighted images (c-DWI) derived from low b-value DWI images and acquired high b-value DWI (a-DWI), in overall image quality and prostate cancer detection rate.&lt;bold&gt;Materials and Methods: &lt;/bold&gt;A total of 124 consecutive men with suspected prostate cancer (PCa) underwent diagnosis prostate MRI on a 3.0&#160;T MR system using a 32-channel phased-array torso coil. Among them, 63 underwent prostate biopsy. MRI protocol included 3DT2w images, high resolution Fov Optimized and Constrained Undistorted Single-Shot (FOCUS™) DWI images with b-values of 100, 400, 800, and 2000&#160;s/mm2 and dynamic contrast enhanced images. C-DWI images (2000 and 2500&#160;s/mm2) were derived from the three lower acquired b-value DWI images using a mono-exponential diffusion decay. C-DWI and acquired high b-value DWI (a-DWI) (2000&#160;s/mm2) were compared for image quality (background signal suppression, anatomic clarity, ghosting, distortion) and tumor conspicuity by four radiologists.&lt;bold&gt;Results: &lt;/bold&gt;C-DWIs demonstrated higher rating than a-DWIs for overall image quality despite worsened ghosting. In patients with a biopsy, similar detection rate was observed while conspicuity was better with c-DWI (p &lt; 0.001). Non-acquisition of high b-value a-DWI reduced total acquisition time by 220&#160;s per patient.&lt;bold&gt;Conclusion: &lt;/bold&gt;C-DWI provides a substantial reduction in acquisition time while maintaining comparable prostate cancer detection rate and improving global image quality.&lt;bold&gt;Key Points: &lt;/bold&gt;• Computed DWI improves global quality of prostate MRI. • Computed DWI improves analysis of DWI images with decrease acquisition time. • Computed DWI provides greater background suppression of parenchyma and improves conspicuity of suspicious lesion. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00330-019-06085-z
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      – SubjectFull: Diffusion magnetic resonance imaging
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