[Castor-users] New CASToR update (v3.1.1) and Siemens Biograph mMR converter

[tmerlin]

Dear CASToR users,

A small update for the 3.1 version is now online. It includes several 
fixes for patient motion correction, the multi-lines Siddon projector 
and the GATE to CASToR converter. A complete list of modifications is 
attached to this mail.

A data converter for the Siemens Biograph mMR system is also available 
(currently only for Unix systems) in the website: 
https://castor-project.org/converters
As the other Siemens data converters, it first requires the use of 
e7tools to generate correction sinograms which are then processed by the 
converter to create the CASToR datafiles.

Best regards,

The CASToR collaboration

-- 
Thibaut MERLIN -- PhD

Docteur en Imagerie Médicale au Laboratoire de Traitement de l'Information Medicale (LaTIM - INSERM UMR 1101)
Institut Brestois de recherche en Bio-Santé (IBRBS)
12 Avenue Foch, 29200 Brest, FRANCE
Tel: 06.75.12.24.90

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## New features
- Add isotropic gaussian filter based on three 1D convolutions for enhanced efficiency

## Bug corrections, code changes, that can affect the results in some way
- Correction for patient motion correction (forward deformation management for sensitivity image was wrong)
- Bug correction for multi-line siddon where all lines should be tested for inclusion into the FOV, thanks to Andreas Bolke.

## Small bug fixes
- Bug fix related to memory management of spectral model
- Acquisition timing info are now always written in the datafile header
- Bug correction for GATE converter:
-- Small check over the consistency of crystal IDs values was added
-- Corrections for macros mixing both cubicArray and linear repeaters in some command lines
-- Fix bug regarding gap computation when using linear repeaters in GATE macro (axis was set to Z by default, even when repeaters were set to other axis)
-- Add small warning if calculated castorID values overcome the max limit. This can occur in some situation with layers, when the crystals are not explicitely attach to the layer0 in GATE
-- Fix datafile inconsistency bug occuring when noise events are included in the simulation, and leading to an incorrect number of events being written in the datafile when true/scatter/random only are selected. 
   Note: Noise events are considered as random events.