Prostate diffusion imaging with distortion correction

Rebecca A. Rakow-Penner; Nathan S. White; Daniel J.A. Margolis; John Kellogg Parsons; Natalie Schenker-Ahmed; Joshua M. Kuperman; Hauke Bartsch; Hyung W. Choi; William G. Bradley; Ahmed Shabaik; Jiaoti Huang; Michael A. Liss; Leonard Marks; Christopher J. Kane; Robert E. Reiter; Steven S. Raman; David S. Karow; Anders M. Dale

doi:10.1016/j.mri.2015.07.006

Prostate diffusion imaging with distortion correction

Rebecca A. Rakow-Penner, Nathan S. White, Daniel J.A. Margolis, John Kellogg Parsons, Natalie Schenker-Ahmed, Joshua M. Kuperman, Hauke Bartsch, Hyung W. Choi, William G. Bradley, Ahmed Shabaik, Jiaoti Huang, Michael A. Liss, Leonard Marks, Christopher J. Kane, Robert E. Reiter, Steven S. Raman, David S. Karow, Anders M. Dale

Department of Urology

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Purpose: Diffusion imaging in the prostate is susceptible to distortion from B0 inhomogeneity. Distortion correction in prostate imaging is not routinely performed, resulting in diffusion images without accurate localization of tumors. We performed and evaluated distortion correction for diffusion imaging in the prostate. Materials and methods: 28 patients underwent pre-operative MRI (T2, Gadolinium perfusion, diffusion at b=800s/mm²). The restriction spectrum protocol parameters included b-values of 0, 800, 1500, and 4000s/mm² in 30 directions for each nonzero b-value. To correct for distortion, forward and reverse trajectories were collected at b=0s/mm². Distortion maps were generated to reflect the offset of the collected data versus the corrected data. Whole-mount histology was available for correlation. Results: Across the 27 patients evaluated (excluding one patient due to data collection error), the average root mean square distortion distance of the prostate was 3.1. mm (standard deviation, 2.2. mm; and maximum distortion, 12. mm). Conclusion: Improved localization of prostate cancer by MRI will allow better surgical planning, targeted biopsies and image-guided treatment therapies. Distortion distances of up to 12. mm due to standard diffusion imaging may grossly misdirect treatment decisions. Distortion correction for diffusion imaging in the prostate improves tumor localization.

Original language	English (US)
Article number	8392
Pages (from-to)	1178-1181
Number of pages	4
Journal	Magnetic Resonance Imaging
Volume	33
Issue number	9
DOIs	https://doi.org/10.1016/j.mri.2015.07.006
State	Published - Nov 2015

Keywords

Diffusion-weighted imaging
Distortion correction
MRI
Prostate cancer

ASJC Scopus subject areas

Biophysics
Radiology Nuclear Medicine and imaging
Biomedical Engineering

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10.1016/j.mri.2015.07.006

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Rakow-Penner, R. A., White, N. S., Margolis, D. J. A., Parsons, J. K., Schenker-Ahmed, N., Kuperman, J. M., Bartsch, H., Choi, H. W., Bradley, W. G., Shabaik, A., Huang, J., Liss, M. A., Marks, L., Kane, C. J., Reiter, R. E., Raman, S. S., Karow, D. S., & Dale, A. M. (2015). Prostate diffusion imaging with distortion correction. Magnetic Resonance Imaging, 33(9), 1178-1181. Article 8392. https://doi.org/10.1016/j.mri.2015.07.006

Rakow-Penner, RA, White, NS, Margolis, DJA, Parsons, JK, Schenker-Ahmed, N, Kuperman, JM, Bartsch, H, Choi, HW, Bradley, WG, Shabaik, A, Huang, J, Liss, MA, Marks, L, Kane, CJ, Reiter, RE, Raman, SS, Karow, DS & Dale, AM 2015, 'Prostate diffusion imaging with distortion correction', Magnetic Resonance Imaging, vol. 33, no. 9, 8392, pp. 1178-1181. https://doi.org/10.1016/j.mri.2015.07.006

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title = "Prostate diffusion imaging with distortion correction",

abstract = "Purpose: Diffusion imaging in the prostate is susceptible to distortion from B0 inhomogeneity. Distortion correction in prostate imaging is not routinely performed, resulting in diffusion images without accurate localization of tumors. We performed and evaluated distortion correction for diffusion imaging in the prostate. Materials and methods: 28 patients underwent pre-operative MRI (T2, Gadolinium perfusion, diffusion at b=800s/mm2). The restriction spectrum protocol parameters included b-values of 0, 800, 1500, and 4000s/mm2 in 30 directions for each nonzero b-value. To correct for distortion, forward and reverse trajectories were collected at b=0s/mm2. Distortion maps were generated to reflect the offset of the collected data versus the corrected data. Whole-mount histology was available for correlation. Results: Across the 27 patients evaluated (excluding one patient due to data collection error), the average root mean square distortion distance of the prostate was 3.1. mm (standard deviation, 2.2. mm; and maximum distortion, 12. mm). Conclusion: Improved localization of prostate cancer by MRI will allow better surgical planning, targeted biopsies and image-guided treatment therapies. Distortion distances of up to 12. mm due to standard diffusion imaging may grossly misdirect treatment decisions. Distortion correction for diffusion imaging in the prostate improves tumor localization.",

keywords = "Diffusion-weighted imaging, Distortion correction, MRI, Prostate cancer",

author = "Rakow-Penner, {Rebecca A.} and White, {Nathan S.} and Margolis, {Daniel J.A.} and Parsons, {John Kellogg} and Natalie Schenker-Ahmed and Kuperman, {Joshua M.} and Hauke Bartsch and Choi, {Hyung W.} and Bradley, {William G.} and Ahmed Shabaik and Jiaoti Huang and Liss, {Michael A.} and Leonard Marks and Kane, {Christopher J.} and Reiter, {Robert E.} and Raman, {Steven S.} and Karow, {David S.} and Dale, {Anders M.}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Inc.",

year = "2015",

month = nov,

doi = "10.1016/j.mri.2015.07.006",

language = "English (US)",

volume = "33",

pages = "1178--1181",

journal = "Magnetic Resonance Imaging",

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T1 - Prostate diffusion imaging with distortion correction

AU - Rakow-Penner, Rebecca A.

AU - White, Nathan S.

AU - Margolis, Daniel J.A.

AU - Parsons, John Kellogg

AU - Schenker-Ahmed, Natalie

AU - Kuperman, Joshua M.

AU - Bartsch, Hauke

AU - Choi, Hyung W.

AU - Bradley, William G.

AU - Shabaik, Ahmed

AU - Huang, Jiaoti

AU - Liss, Michael A.

AU - Marks, Leonard

AU - Kane, Christopher J.

AU - Reiter, Robert E.

AU - Raman, Steven S.

AU - Karow, David S.

AU - Dale, Anders M.

PY - 2015/11

Y1 - 2015/11

N2 - Purpose: Diffusion imaging in the prostate is susceptible to distortion from B0 inhomogeneity. Distortion correction in prostate imaging is not routinely performed, resulting in diffusion images without accurate localization of tumors. We performed and evaluated distortion correction for diffusion imaging in the prostate. Materials and methods: 28 patients underwent pre-operative MRI (T2, Gadolinium perfusion, diffusion at b=800s/mm2). The restriction spectrum protocol parameters included b-values of 0, 800, 1500, and 4000s/mm2 in 30 directions for each nonzero b-value. To correct for distortion, forward and reverse trajectories were collected at b=0s/mm2. Distortion maps were generated to reflect the offset of the collected data versus the corrected data. Whole-mount histology was available for correlation. Results: Across the 27 patients evaluated (excluding one patient due to data collection error), the average root mean square distortion distance of the prostate was 3.1. mm (standard deviation, 2.2. mm; and maximum distortion, 12. mm). Conclusion: Improved localization of prostate cancer by MRI will allow better surgical planning, targeted biopsies and image-guided treatment therapies. Distortion distances of up to 12. mm due to standard diffusion imaging may grossly misdirect treatment decisions. Distortion correction for diffusion imaging in the prostate improves tumor localization.

AB - Purpose: Diffusion imaging in the prostate is susceptible to distortion from B0 inhomogeneity. Distortion correction in prostate imaging is not routinely performed, resulting in diffusion images without accurate localization of tumors. We performed and evaluated distortion correction for diffusion imaging in the prostate. Materials and methods: 28 patients underwent pre-operative MRI (T2, Gadolinium perfusion, diffusion at b=800s/mm2). The restriction spectrum protocol parameters included b-values of 0, 800, 1500, and 4000s/mm2 in 30 directions for each nonzero b-value. To correct for distortion, forward and reverse trajectories were collected at b=0s/mm2. Distortion maps were generated to reflect the offset of the collected data versus the corrected data. Whole-mount histology was available for correlation. Results: Across the 27 patients evaluated (excluding one patient due to data collection error), the average root mean square distortion distance of the prostate was 3.1. mm (standard deviation, 2.2. mm; and maximum distortion, 12. mm). Conclusion: Improved localization of prostate cancer by MRI will allow better surgical planning, targeted biopsies and image-guided treatment therapies. Distortion distances of up to 12. mm due to standard diffusion imaging may grossly misdirect treatment decisions. Distortion correction for diffusion imaging in the prostate improves tumor localization.

KW - Diffusion-weighted imaging

KW - Distortion correction

KW - MRI

KW - Prostate cancer

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EP - 1181

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JF - Magnetic Resonance Imaging

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M1 - 8392

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Prostate diffusion imaging with distortion correction

Abstract

Keywords

ASJC Scopus subject areas

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