Small Animal Imaging Resource Program @ Johns Hopkins


Retrieving data

Data retrieval is a bit different for each scanning device. Having sufficient data storage is of increasing concern because of the tremendous size of image data, especially for HRRT studies. Since PET and MR image data are permanently stored by the techs, that in principle serves as a backup thus it is only necessary for the user to maintain a single copy. However, it is always recommended that the user maintains their own backup.


GE Advance PET

The GE Advance is being used infrequently by our group, with only a couple studies done in 2006. Reconstructed PET image data is placed on the server petscan.nm.jhu.edu.

To access set up an ftp connection (e.g. with FileZilla) to petscan.nm.jhu.edu; user: mpomper; REQUIRES PASSWORD.

After successfully connecting, you will see all the studies in the folder (the image data will have extension 'IE') that you can then retrieve. After copying over the data you will need to use readadvance to convert to Analyze format.


To access HRRT data: from a windows PC map a drive to user: HRRTuser; REQUIRES PASSWORD. After successfully mounting the drive, you find your study and simply drag and drop to your PC. The file is in Ecat format and has extension '.v'. Analyze can read the format but usually the files are too large and need to be truncated.

PET blood data

Blood data from counting plasma samples can be retrieved from http://petscan.nm.jhu.edu/petgamma/
Simply go to that site in your web browser then select the year, month, then date of your study. You will see several files 'COM...........'. Right click then Save Link As to save file to your folder. You will need to get the printout from Dr. Hilton - he always leaves it in the metabolite room. On the printout he writes the count time which you will need to do decay correction. Dr. Hilton will send the metabolite data to you by email.


All the MRI studies are sent directly to my DICOM server (AE_TITLE: ENDRES_NEURO; IP; Port 4006). These could easily be sent to any DICOM server.