content: !INTERFILE  :=
  !imaging modality := PT
  name of data file := safir_20.s
  originating system := SAFIR_20
  !version of keys := STIR3.0
  !GENERAL DATA :=
  !GENERAL IMAGE DATA :=
  !type of data := PET
  imagedata byte order := LITTLEENDIAN
  !PET STUDY (General) :=
  !PET data type := Emission
  applied corrections := {arc correction}
  !number format := float
  !number of bytes per pixel := 4
  number of dimensions := 4
  matrix axis label [4] := segment
  !matrix size [4] := 181
  matrix axis label [3] := view
  !matrix size [3] := 90
  matrix axis label [2] := axial coordinate
  !matrix size [2] := { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,90,89,88,87,86,85,84,83,82,81,80,79,78,77,76,75,74,73,72,71,70,69,68,67,66,65,64,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}
  matrix axis label [1] := tangential coordinate
  !matrix size [1] := 90
  minimum ring difference per segment := { -90,-89,-88,-87,-86,-85,-84,-83,-82,-81,-80,-79,-78,-77,-76,-75,-74,-73,-72,-71,-70,-69,-68,-67,-66,-65,-64,-63,-62,-61,-60,-59,-58,-57,-56,-55,-54,-53,-52,-51,-50,-49,-48,-47,-46,-45,-44,-43,-42,-41,-40,-39,-38,-37,-36,-35,-34,-33,-32,-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90}
  maximum ring difference per segment := { -90,-89,-88,-87,-86,-85,-84,-83,-82,-81,-80,-79,-78,-77,-76,-75,-74,-73,-72,-71,-70,-69,-68,-67,-66,-65,-64,-63,-62,-61,-60,-59,-58,-57,-56,-55,-54,-53,-52,-51,-50,-49,-48,-47,-46,-45,-44,-43,-42,-41,-40,-39,-38,-37,-36,-35,-34,-33,-32,-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90}
  Scanner parameters:= 
  Scanner type := SAFIR_20
  Number of rings                          := 91
  Number of detectors per ring             := 180
  Inner ring diameter (cm)                 := 12.6
  Average depth of interaction (cm)        := 0.5
  Distance between rings (cm)              := 0.22
  Default bin size (cm)                    := 0.11
  View offset (degrees)                    := 0
  Maximum number of non-arc-corrected bins := 90
  Default number of arc-corrected bins     := 90
  Number of blocks per bucket in transaxial direction         := 1
  Number of blocks per bucket in axial direction              := 1
  Number of crystals per block in axial direction             := 1
  Number of crystals per block in transaxial direction        := 1
  Number of detector layers                                   := 1
  Number of crystals per singles unit in axial direction      := 1
  Number of crystals per singles unit in transaxial direction := 1
  end scanner parameters:=
  effective central bin size (cm) := 0.11
  number of time frames := 1
  !END OF INTERFILE :=
  