Trajectory Extractor

Summary

Automatic k-space trajectory extraction of arbitrary MRI sequences. Works by accurately determining the encoding of the generated signal.

Work In Progress 🚧

This tool will get extended support for $T_1$ / $T_2$ weighting analysis, non-ADC trajectory samples, multi-state trajectories.

Demo and Tool URL

https://tool-trajex.fly.dev/

wss://tool-trajex.fly.dev/tool

Inputs

Input	Description
sequence: Vec<InstantSeqEvent>	List of instantaneous sequence events, typically produced by conseq
t1: f64	Longitudinal relaxation time $T_1$ in seconds
t2: f64	Transverse relaxation time $T_2$ in seconds
min_mag: f64	Minimum magnetization magnitude threshold; states below this are pruned to control complexity vs. accuracy

Output

A list of 4D k-space positions, returned as toolapi::TypedList::Vec4. Each entry is [k_x, k_y, k_z, tau] corresponding to the dominant magnetization pathway at each ADC readout.