Dataset Open Access

Data from Study: Respiratory Motion Correction of PET using MR-Constrained PET-PET Registration

Balfour, Daniel

This dataset contains the data used to arrive at the conclusions in the research article Respiratory Motion Correction of PET using MR-Constrained PET-PET Registration, by Balfour et al [BioMedical Engineering OnLine 2015, 14:85].

This study was based upon motion-affected PET images simulated from real dynamic MR image volumes, simulated and reconstructed using the Software for Tomographic Image Reconstruction ("STIR", see http://stir.sourceforge.net/). This dataset includes data from MR scans of 4 healthy volunteers (male, aged 22-33).

Three types of data are provided, which should be sufficient for repeating the findings of the study:

  • Reconstructed PET image volumes, split into 6 respiratory bins ("gates") for each simulation
  • The dynamic 3D MR volumes used to derive the respiratory motion of each volunteer
  • Text files outline which dynamics have NOT been used for PET simulation - these are the ones used to make the motion model in the study

These MR volumes were registered and combined with the head-foot position of the right hemidiaphragm to form a respiratory motion model, which was subsequently used to constrain PET to PET image registration, attempting to correct for the motion in the PET images.

For more detailed information regarding the method, please refer to the article.

The PET data is split into several sub-categories:

  • Volunteer ID (4 possibilities, anonymised)
  • Lesion position (9 possibilities - see article for locations)
  • Lesion diameter, in millimetres (10 or 14 mm)
  • Respiratory gate number, ranging from 1 (most inhaled) to 6 (most exhaled)

Note that there are two types of each simulation: with motion, and without motion. These are included in the respective zip files for each volunteer ID.

 

The file names reflect which image the file contains according to a number of substrings. As outlined in the description, there are several tags associated with each PET simulation. Specifically these are: - volnN, where N refers to the volunteer identification number (1-4) - motionless simulations contain the tag "stat", short for "static" - LesPosN, where N refers to the lesion position (1-9) - LesDiamN, where N refers to the lesion diameter in mm (10 or 14) - gateN, where N is the respiratory bin Note that all PET image intensities are multiplied by 100 to avoid problems with numerical precision. All PET filenames contain the substring "x100" to remind the user of this. Each set of PET images are zipped according to volunteer ID and motion status: whether motion is included (substring "wMotion") or not included ("noMotion"). Note that the latter was used for validation purposes. All MR dynamic images are contained within "Dynamics.zip", which follow the tagging system mentioned above - only volunteer ID and the dynamic number are included. Note that there are a total of 35 dynamic volumes for each volunteer, except for volunteer 4, for which there are 70 volumes available. These have been included for completeness.
Files (1.7 GB)
Name Size
Dynamics.zip
md5:4569d09f4f8934d134560b45c28d4327
622.4 MB Download
voln1_dynsForModel.txt
md5:1fd5b913d8a955bb9ab0bd046b9a2bc5
170 Bytes Download
voln1_PET_noMotion.zip
md5:d959fa1591a718a50732ad3b5f802b79
136.8 MB Download
voln1_PET_wMotion.zip
md5:5a701581d67651df8134532dd007ba5c
136.7 MB Download
voln2_dynsForModel.txt
md5:856fe4a7364154eb2fc45dd60d36c258
160 Bytes Download
voln2_PET_noMotion.zip
md5:f03592f306523a51d0210c144ab53159
132.3 MB Download
voln2_PET_wMotion.zip
md5:0ccbe8b734726e0d386a75b8fe47bde3
131.9 MB Download
voln3_dynsForModel.txt
md5:e42bce26ba1325998d9ab96d556eeddf
160 Bytes Download
voln3_PET_noMotion.zip
md5:57099313f0932a4b1105f67ab447ded4
123.8 MB Download
voln3_PET_wMotion.zip
md5:48afefd07d681b512a527444f22e8f34
123.9 MB Download
voln4_dynsForModel.txt
md5:04dbb0c808c99af532d16998867077b5
160 Bytes Download
voln4_PET_noMotion.zip
md5:4d6e90617ca61878b0536b9e98fbaa33
125.1 MB Download
voln4_PET_wMotion.zip
md5:6b64673c620e4d8dc98ef3821439de29
125.1 MB Download

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