|Message: Wrong Hit position giving half/ distorted image output||Not Logged In (login)|
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I am trying to simulate digital radiography in order to obtain images that are recorded as interaction (photon counting) in a flat detector geometry placed at [-10,0,0], a source at [10,0,0] and a spherical object at [0,0,0].
1. The image produced show only half of the projection maybe because it is just recording the deposition for positive coordinates (x,y) and not for negatives (-x,-y).
2. The image does not cover the entire 512x512 pixel grid.
The line hitx seems to have the problem. Could any one help with this?
G4StepPoint* preStepPoint = aStep->GetPreStepPoint(); G4TouchableHandle theTouchable = preStepPoint->GetTouchableHandle();
G4ThreeVector worldPos = preStepPoint->GetPosition(); G4ThreeVector localPos = theTouchable->GetHistory()->GetTopTransform().TransformPoint(worldPos);
G4double phi = localPos.getPhi();
Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/12/15/10.13-95091-IMAGE.jpg http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2016/12/15/10.13-26971-axis.jpg