This readme.txt file was generated on <20200920> by ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Multi-echo spin echo prostate images for T2 mapping 2. Author Information Principal Investigator Contact Information Name: Gregory J. Metzger Institution: Center for Magnetic Resonance Research, University of Minnesota Address: 2021 6th Street SE, Minneapolis MN 55455 Email: gmetzger@umn.edu ORCID: 0000-0002-3187-6529 Associate or Co-investigator Contact Information Name: Patrick J. Bolan Institution: Center for Magnetic Resonance Research, University of Minnesota Address: 2021 6th Street SE, Minneapolis MN 55455 Email: bola0035@umn.edu ORCID: 0000-0002-4194-3975 3. Date published or finalized for release: October 1, 2022 4. Dates of data collection: July 2015 - April 2022 5. Geographic location of data collection (where was data collected?): Minnesota 6. Information about funding sources that supported the collection of the data: NIH P41 EB027061 NIH R01 CA241159 NIH S10 OD017974-01 7. Overview of the data (abstract): This is a dataset of magnetic resonance images suitable for performing quantitative T2 mapping in the prostate. Scans were acquired with spin-echo multi-contrast pulse sequence over an array of echo times. This data is being shared to allow comparison of methods for estimating T2 from the images. Multi-echo image series were processed to remove protected health information, cropped to 128x128 to focus on the prostate, and saved out in NIFTI format. The dataset is divided into Training (n=86) and Testing (n=32) groups. Details of acquisition and format are provided in the readme file. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CC0 1.0 Universal [https://creativecommons.org/publicdomain/zero/1.0/] 2. Links to publications that cite or use the data: Pending 3. Was data derived from another source? No If yes, list source(s): 4. Terms of Use: Data Repository for the U of Minnesota (DRUM) By using these files, users agree to the Terms of Use. https://conservancy.umn.edu/pages/drum/policies/#terms-of-use 5. Recommended data citation: Metzger, Gregory J; Bolan, Patrick J. (2022). Multi-echo spin echo prostate images for T2 mapping. Retrieved from the Data Repository for the University of Minnesota, https://hdl.handle.net/11299/243192. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List. Images are divided into training and testing groups. The training set includes 86 files: imagesTr/prostate_001.nii.gz imagesTr/prostate_002.nii.gz ... imagesTr/prostate_086.nii.gz The testing set includes 32 files: imagesTs/prostate_001.nii.gz imagesTs/prostate_002.nii.gz ... imagesTs/prostate_032.nii.gz 2. File Format: Each case is contained in a single file in compressed NIFTI format (*.nii.gz). The dimensions are 128 x 128 x Ns spatial, plus a 4th dimension that is the TE variation. The 3rd spatial dimension Ns is number of slices, which varies between datasets, ranging from 19-28. Files indicate the spatial resolution is 1 mm isotropic, but they were acquired at 1.1 x 1.1 x 3mm. -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: All scans were acquired on a Siemens 3T Prisma scanner with surface and endorectal receive coils under an IRB-approved protocol. Multi-echo fast spin-echo MR images were acquired using the vendor’s spin-echo multi-contrast sequence (se_mc), with parameters TR = 6000 ms, TE = 13.2 - 145.2 ms in 11 increments, 256 x 256 images with resolution 1.1 x 1.1, 19-28 slices 3 mm thick. 2. Methods for processing the data: The first echo was discarded to avoid stimulated echo contamination. The original 256x256 pixel images were cropped to 128x128 to focus on the prostate. 3. Instrument- or software-specific information needed to interpret the data: N/A 4. Standards and calibration information, if appropriate: N/A 5. Environmental/experimental conditions: N/A 6. Describe any quality-assurance procedures performed on the data: N/A 7. People involved with sample collection, processing, analysis and/or submission: Greg Metzger, Patrick Bolan