PET phantom data from Siemens Biograph mMR with Carbon-11 scanned over 12 half-lives.

Data summary
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Title: PET phantom data from Siemens Biograph mMR with Carbon-11 scanned over 12 half-lives.

Summary: List mode & accompanying raw data for 12 PET acquistions with DIXON, UTE and CT based u-maps.

PET Aquisitions:
PET raw data from Siemens Biograph mMR PET-MR scanner with VE11P software. Consists of twelve acquisitions of a 5.5L bottle containing carbon-11, each acquisition approximately one 11C half-life apart (20 min).

Bottle was not moved between acquisitions. Bed was not moved between acquisitions.

Scans were acquired in a single bed position with upper and lower head-only coils in position.

Activity concentration of ¹¹C in the bottle was measured from 10 x 0.2 mL samples taken from the bottle prior to the first scan and measured on a cross-calibrated Perkin-Elmer Wizard 2470 10-detector gamma-counter. Gamma-counter data for this measurement is not included. Concentration at the start of the first PET scan was measured to be 52.804 kBq/mL.

Attenuation Maps:
MR-attentuation u-maps were acquired with each PET scan using the "HiRes" DIXON sequence recommended by Siemens for brain scans.

A single UTE MR-attentuation u-map was acquired with the first PET scan.

A compatible CT-attenuation u-map was created from a low dose CT scan from a GE710 Discovery PET-CT scanner which was coregistered with the single UTE.

Siemens hardware u-maps for bed and coils are not included.

PET Images:
The static PET images automatically reconstructed after acquisition on the Biograph mMR are included for basic comparison purposes. An attenuation corrected and non-attenuation corrected PET scan from the first PET acqusition are included.

Folders:

• pet-raw:
  • Contains 12 subfolders, each containing 4 pairs of PET raw data in dcm/BF format. Subfolder names, with PET acqusition start time and duration in seconds is listed in the table below.
    • 30001Head_1_PetAcquisition_Raw_Data    12:26:01    1200
    • 30004Head_2_PetAcquisition_Raw_Data    12:47:11    600
    • 30007Head_3_PetAcquisition_Raw_Data    13:08:10    600
    • 30010Head_4_PetAcquisition_Raw_Data    13:28:48    600
    • 30013Head_5_PetAcquisition_Raw_Data    13:49:13    600
    • 30016Head_6_PetAcquisition_Raw_Data    14:09:32    600
    • 30019Head_7_PetAcquisition_Raw_Data    14:29:48    600
    • 30022Head_8_PetAcquisition_Raw_Data    14:50:03    600
    • 30025Head_9_PetAcquisition_Raw_Data    15:10:19    600
    • 30028Head_10_PetAcquisition_Raw_Data    15:30:33    600
    • 30031Head_11_PetAcquisition_Raw_Data    15:50:46    600
    • 30034Head_12_PetAcquisition_Raw_Data    16:10:59    600
• umaps:
  • Contains 3 subfolders with DIXON, UTE and CT u-umaps in DICOM (IMA) format.
    • 1. CTAC: u-map based on CTAC coregistered to UTE.    
    • 2. MRAC-HiRes: twelve DIXON "HiRes" u-maps for each PET acquisition.    
    • 3. MRAC-UTE: single UTE u-map from first PET acquisition.
• pet-images-01:
  • Contains 2 subfolders with attenuation corrected (AC) and non-attenuation corrected (NAC) static PET images automatically reconstructed from acqusition of first scan. Images are in DICOM (IMA) format.  
    • 1. PETAC    
    • 2. PETNAC