The first Temporal Imaging Compton Camera

Temporal Imaging is a new concept for gamma ray imaging that uses both light and time distribution of each scintillation event to localize precisely each scintillation event in space (X,Y,Z), time (T) and energy (E).
This new imaging concept allows an order of magnitude improvement on the voxel size for each scintilation event (1x1x2mm).

Temporal Delta is the first device to use this new concept. It allows real time calculation of the characteristic vector (X,Y,Z,T,E) for each validated event.

In the Compton version 2 detector plates are used and characteristic vectors of each plates are used to reconstruct a compton image.

Temporal Delta Compton features

Temporal delta Compton is composed of a processing unit and one or two detector units

  • > Temporal imaging read-out electronics
  • > 1 calibrated detector module composed of two 32x32 mm crystals (LYSO or CeBr3) read-out read-out through Phillips DPC3200 Tile Sensor
  • > Embedded software to reconstruct characteristic vector (X,Y,Z,T,E) in real
    time for each valid scintillation event

Detector configuration

  • > Anti-coincidence : 2 units featuring 32x32x20 mm LYSO crystals read-out through Phillips DPC3200 Tile Sensor
  • > Compton Camera : 2 units featuring 32x32 mm LYSO crystals in the same housing read-out through Phillips DPC3200 Tile Sensor

Coming 2017 CeBr3 Temporal detectors

1,3 MeV Compton image


  • > Compton image of two 22Na 0.01 MBq sources 50 mm from the detector
  • > Spacer: 4 mm > 4.5° resolution angle
  • > Counting time: 100 s
  • > Energie used for the image: 1.3 MeV

Crystal volume
Eres 662 KeV
Angular resoution
Energy range HE version
26 cm3
0.3 µR/h <1mn
250 KeV-3 MeV 1 – 10 MeV
Count rate
Source distance determination
5 Rem/h
>5 m
26x9x24 cm
1 Kg

Flood image of the LYSO detector