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Dear SPMers,
I have a 4D analyze file composed of one hdr
and one img files. The data have multiple volumes. I found a somewhat relevant
question in the mail base (below). However, I don’t need full support for a 4D
file as mentioned below.
I have one 4D Analyze file named A.hdr
& img, one regular 3D Analyze file (one volume) named B.hdr & img, and
MRI.hdr & img. A and B are functional images and in the same orientation. I
would like to know if,
1.
I can coregister A and B to MRI by selecting target: MRI, object: A and
other: B. I would like to coregister A and B to MRI but not MRI to A and B for
some reason.
2.
I can do spatial normalization by determining parameter from MRI and write
normalized images from rA and rB (if step#1 works, I will obtain rB). I want to
have a spatially normalized 4D file.
My question may sound odd but I am
analyzing data outside of SPM using a program for a 4D Analyze file.
I found that SPM can display B.hdr &
img. But I don’t see an option to select a volume. Which volume is displayed?
Sincerely,
Masahiro
Masahiro Fujita, MD, PhD
Assistant Professor
Department of Psychiatry, Yale University
School of Medicine
Room C310, Building 5,
VA Connecticut/116A2, 950 Campbell Avenue,
West Haven, CT06516, USA
Phone: +1-203-932-5711, ext. 3335, 3590
Fax: +1-203-937-3897
E-mail: [log in to unmask]
Subject: Re: New analyze data format
From: Matthew Brett ([log in to unmask])
Date: 7 Jul 2000 - 10:32 BST
Dear
Karsten,
> a short question: Does SPM have full support for
the new analyze data
> format,
> or is it still neccessary to have an *.img-file for each scan?
>
> Because I have fMRI time series with more than 3000 scans, it would
be
> great to have only one single *.img-file for the whole run.
In
short, no, SPM99 can't work with 4D Analyze files.
In fact this facility for 4D files is part of the old Analyze format as well.
I agree absolutely that the facility to work on 4D files would be extremely
useful. SPM99 has much more flexibility with file formats than SPM96, and it
should be possible to implement that support. Anyone who can see their way
through to having a go at this would be doing a great favour to those of us
struggling with huge directory listings for long FMRI runs.
Cheers,
Matthew