Interfile README

SPECT myocardial perfusion studies
Gated blood pool studies
Renal studies
Hybrid phantoms of dynamic renal studies

The following test programs were used:

Interfix program (syntactic testing of Interfiles)
microSegams (data processing system with Interfile input)

It was a general experience that if an error was detected by any
of these programs in any of the studies then the same error was
detected also in all studies in the same group. (The same program
generated the studies in the same group, making the same errors in
each file.) For this reason the errors listed here are mentioned
with the groups and it means that the same error was detected in
each study and modified in the same way in each study.

The modified Interfiles are in the compressed files

heart1.tar.gz, heart1.zip SPECT myocardial perfusion studies
heart2.tar.gz, heart2.zip Gated blood pool studies
kidney1.tar.gz, kidney1.zip Renal studies
kidney2.tar.gz, kidney2.zip Hybrid phantoms of dynamic renal studies

A.)
The *.tar.gz files are compressed by tar and gzip.

1. You can unzip them on Unix as

gunzip heart1.tar.gz
tar xvf heart1.tar

gunzip heart2.tar.gz
tar xvf heart2.tar

gunzip kidney1.tar.gz
tar xvf kidney1.tar

gunzip kidney2.tar.gz
tar xvf kidney2.tar

2. You can unzip the *.tar.gz file on PC machines with winzip 7.0
(http://www.winzip.com).

B.)
The *.zip file are compressed by winzip 7.0.
You can unzip these files on PC machines using winzip 7.0
(http://www.winzip.com).

If you have any problem with the files, please write to:

iaea@inf.u-szeged.hu

CARDIAC FILES
The resulting files are in the directories:

heart1
heart2
--------------
1. SPECT myocardial perfusion Tc-99m sestamibi -
heart2/rhc001t1.hdr, *.img - rest
heart2/rhc001t2.hdr, *.img - stress
....
heart2/rhc030t1.hdr, *.img - rest
heart2/rhc030t2.hdr, *.img - stress

TESTS:

1) interfix:

!INTERFILE :=!!!!Key has no value:
!GENERAL DATA:=!!!!Key has no value:
!GENERAL IMAGE DATA:=!!!!Key has no value:
!SPECT STUDY (general):=!!!!Key has no value:
!SPECT STUDY (reconstructed data):=!!!!Key has no value:
!END OF INTERFILE:=!!!!Key has no value:

2) microSegams:

signed integer is not allowed in the system

MODIFICATIONS:

old, wrong values new, modified values

patient rotation:= ON BACK -> patient rotation:= supine
patient orientation:= HEAD FIRST -> patient orientation:= head in
!imaging modality := NUC MED -> !imaging modality := NUCMED

--------------------------------------------------------

2. Rest gated blood pool-
heart1/vub0010.hdr, *.img
.....
heart1/vub0300.hdr, *.img

TESTS:

1) Interfix:

!INTERFILE :=!!!!Key has no value:
!GENERAL DATA:=!!!!Key has no value:
data description:=!!!!Key has no value:
exam type:=!!!!Key has no value:
!GENERAL IMAGE DATA:=!!!!Key has no value:
energy window@:=!!!!Key has no value:
energy window@:=!!!!Key has no value:
energy window@:=!!!!Key has no value:
flood corrected:=!!!!Key has no value:
decay corrected:=!!!!Key has no value:
!GATED STUDY (general):=!!!!Key has no value:
scaling factor (mm/pixel) [1]:=!!!!Key has no value:
scaling factor (mm/pixel) [2]:=!!!!Key has no value:
!Gated Study (each time window):=!!!!Key has no value:
!END OF INTERFILE:=!!!!Key has no value:

2) microSegams

inconsistent key values gives false data:
image duration (sec) := 48.0
time window lower limit (sec) := 4898448
time window upper limit (sec) := 7346108
study duration (acquired) sec := 768.000
False key value:
!maximum pixel count := 0

MODIFICATIONS:

old, wrong values new, modified values
filename: *.rec -> *.hdr

!image duration (sec):= 48.0 -> ;!image duration (sec):=48.0
(key is not necessary before the block of "Gated Study (each time window)"

patient dob:= unknown -> ;patient dob:= unknown
(the key value must be date format)

%R-R CYCLES ACQUIRED THIS TIME WINDOW -> %R-R CYCLES ACQUIRED THIS WINDOW

------------------------------------------------------

RENAL FILES
The resulting files are in the directories:

kidney1
kidney2
--------------

1. normal patients -
kidney2/n4.hdr, *.img
....
kidney2/n19.hdr, *.img

TESTS:

1) Interfix:

!INTERFILE :=!!!!Key has no value:
!GENERAL DATA:=!!!!Key has no value:
!GENERAL IMAGE DATA:=!!!!Key has no value:
!DYNAMIC STUDY (general):=!!!!Key has no value:
!Dynamic Study (each frame group):=!!!!Key has no value:
!END OF INTERFILE:=!!!!Key has no value:

2) microSegams
OK

MODIFICATIONS:

no modifications

------------------------------------------------------

2. Hybrid phantoms of dynamic renal study -
kidney1/hox1.hdr, *.img
....
kidney1/hybridx.hdr, *.img

TESTS:

1) Interfix:

!INTERFILE :=!!!!Key has no value:
!GENERAL DATA:=!!!!Key has no value:
!GENERAL IMAGE DATA:=!!!!Key has no value:
!DYNAMIC STUDY (general):=!!!!Key has no value:
!Dynamic Study (each frame group):=!!!!Key has no value:

2) microSegams:
OK

MODIFICATIONS:

old, wrong values new, modified values
*.i -> *.img (image file name).