Re: [HCP-Users] Negative Voxel Values signed int 16 vs uint16 issue

2016-03-03 Thread Stephen Smith
n.edu>> > Cc: "hcp-users@humanconnectome.org <mailto:hcp-users@humanconnectome.org>" > <hcp-users@humanconnectome.org <mailto:hcp-users@humanconnectome.org>> > Subject: Re: [HCP-Users] Negative Voxel Values signed int 16 vs uint16 issue > > NiFTI-1.1 doe

Re: [HCP-Users] Negative Voxel Values signed int 16 vs uint16 issue

2016-03-03 Thread Harms, Michael
hcp-users-boun...@humanconnectome.org> on behalf of Timothy Coalson <tsc...@mst.edu> Date: Thursday, March 3, 2016 at 3:14 PM To: "Garrett T. McGrath" <gmcgr...@princeton.edu> Cc: "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: Re: [HC

Re: [HCP-Users] Negative Voxel Values signed int 16 vs uint16 issue

2016-03-03 Thread Timothy Coalson
NiFTI-1.1 does in fact support both signed and unsigned int16: #define DT_INT16 4 ... #define DT_UINT16512 /* unsigned short (16 bits) */ I don't know if this was the case in NiFTI-1.0, but NiFTI-1.1 has been around so long it would be strange if tools

Re: [HCP-Users] Negative Voxel Values signed int 16 vs uint16 issue

2016-03-03 Thread Harms, Michael
Hi, We’ve been going with FLOAT32 in our conversions, which I believe is the default behavior of ‘dcm2nii’. cheers, -MH -- Michael Harms, Ph.D. --- Conte Center for the Neuroscience of Mental Disorders Washington University School of

[HCP-Users] Negative Voxel Values signed int 16 vs uint16 issue

2016-03-03 Thread Garrett T. McGrath
We've had a set of users that have discovered an issue with their latest datasets that I'm hoping there might be a best practice for dealing with in regards to FSL. I've received some specific context from the end users on what they are capturing: Users are collecting single-band spin echo EPI