When linked with an electronical medical record (EMR) software, each patient has a separate PHF file. The patient number of the EMR determines the name of the PHF file
If the EMR system has changed, but the patient number is unchanged, the PHF files are paired correctly and can be called out of the new EMR software without any conversion.
If the patient number changed, the pairing of patient and PHF file is not correct. The data can be rescued, but must be reallocated. There are several options:
If the numbers were changed after a rule, e.g. +2,000,000, a file rename program can rename the files.
If any table with old and new number exists or both numbers are available in the new EMR system as a pair, the EMR provider is able to program a routine that performs the renaming.
If an ordered renaming is impossible, the data can be rescued by merging them to a single large file. Note: The number of examinations is limited to 64,000.
Delete all *.PHD files. They are auxillary files which are automatically generated if needed.
Make at least 1 safety copy of all *.PHF files.
Write a batch file with the commands: CD <data directory> copy /b *.phf OLDDATA.phf pause
Move OLDDATA.phf to another folder. Open the file with PeriData. OLDDATA.phd will be written. This may take some time. After that, all examinations should be shown in the database window.
After that, allocate the data to the patients, according to step 2 of option 2 of "Handling of old data from a perimeter " >> look here