v1.10.6

Updated warning message regarding area preservation in gradinterp.m

v1.10.5

• Added functions for padding waveform times to desired raster boundary: arb4ge.m, exttrap4ge.m. Useful for padding to 20us boundary so that the interpolating from 10us (Siemens) to 4us (GE) is accurate.
• No longer force g.first and g.last to zero in gradinterp.m. I forgot why I did this in the first place, it's certainly wrong.
• Successfully tested with the tv6 spiral example in https://github.com/HarmonizedMRI/SequenceExamples-GE/

v1.10.4

Bug fix: preserve delay in trap4ge.m

v1.10.3

Use MATLAB command 'delete' to remove temporary files, instead of Linux system command 'rm'

v2.1.2

Add optional argument 'pislquant' to writeceq.m to specify number of TRs to use for receive gain calibration (GE)

v1.10.2

Minor bug fix related to setting trigger out column in scanloop.txt

v2.1.1-alpha

• Bug fix: write scan duration and number of ADC events to file
• Faster conversion from .seq to Ceq representation (seq2ceq.m)
• Added progress bar
• Blocks with duration <= 20us are treated as zero-length blocks (can be used for, e.g., cardiac triggering with physio1 label)

Example conversion of a .seq file to the Pulserver/pge2/Ceq format:

system('git clone [email protected]:pulseq/pulseq.git');
addpath pulseq/matlab

ceq = seq2ceq('mysequence.seq');

writeceq(ceq, 'mysequence.pge2');    % write Ceq struct to file. This is what pge2 will load and run.

Use with pge2 interpreter v2.1.1-alpha-4

Passes simulator (WTools) but needs to be tested on hardware

v1.10.1

Allow physio trigger for pure delay blocks

v1.10.0

Added physio trigger. Use with interpreter tv6 v1.10.0

To add a physio trigger to your Pulseq sequence, do:

Step 1: trig = mr.makeTrigger('physio1', 'duration', 20e-6); % dummy duration -- ignored by GE interpreter
Step 2: seq.addBlock(rf, gz, mr.makeLabel('SET', 'TRID', 3), trig); % example using TRID = 3

Notes:

• a trigger cannot be the only event in a block -- if it is, it will be ignored.
• adding a trigger event does not require a separate TRID -- the segment is still an instance of the same 'virtual' segment

v2.1.0-alpha

Add support for physio1 (cardiac) trigger, and 'extended trapezoid' RF pulse

Reminder: v2.x.x is for converting a Pulseq (.seq) file to the 'Pulserver' file format that is used by the 'Pulseq on GE v2' (pge