.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "generated/gallery/10-gradient-echo/gre_stack_of_blades3D_sequence.py" .. LINE NUMBERS ARE GIVEN BELOW. .. only:: html .. note:: :class: sphx-glr-download-link-note :ref:`Go to the end ` to download the full example code. .. rst-class:: sphx-glr-example-title .. _sphx_glr_generated_gallery_10-gradient-echo_gre_stack_of_blades3D_sequence.py: ================================== 3D stack-of-blades gradient echo ================================== A slab-selective spoiled excitation is followed by one line from a rotating in-plane PROPELLER blade with Cartesian partition encoding. Gradient and RF spoiling suppress residual transverse coherence. TR, flip angle, and TE determine contrast. The overlapping blade centres support motion-robust 3D structural imaging. .. GENERATED FROM PYTHON SOURCE LINES 12-32 .. GENERATED FROM PYTHON SOURCE LINES 33-37 Sixteen-line blades ------------------- Sixteen lines per blade, at every partition. .. GENERATED FROM PYTHON SOURCE LINES 37-47 .. code-block:: Python import pypulseqpp as pp from pypulseqpp.sequences import gre_stack_of_blades3D_sequence baseline = gre_stack_of_blades3D_sequence( n=96, n_z=8, blade_width=16, tr=None, n_dummy=0 ) print(f"{baseline.num_blocks} blocks, {baseline.duration()[0]:.2f} s") .. rst-class:: sphx-glr-script-out .. code-block:: none 6400 blocks, 8.04 s .. GENERATED FROM PYTHON SOURCE LINES 48-50 Sequence diagram ---------------- .. GENERATED FROM PYTHON SOURCE LINES 50-53 .. code-block:: Python baseline.paper_plot() .. image-sg:: /generated/gallery/10-gradient-echo/images/sphx_glr_gre_stack_of_blades3D_sequence_001.png :alt: gre stack of blades3D sequence :srcset: /generated/gallery/10-gradient-echo/images/sphx_glr_gre_stack_of_blades3D_sequence_001.png :class: sphx-glr-single-img .. GENERATED FROM PYTHON SOURCE LINES 54-58 Sampling order -------------- The blades of every partition, over the three k-space axes. .. GENERATED FROM PYTHON SOURCE LINES 58-61 .. code-block:: Python pp.plot.plot_kspace(baseline, color_by="shot") .. image-sg:: /generated/gallery/10-gradient-echo/images/sphx_glr_gre_stack_of_blades3D_sequence_002.png :alt: gre stack of blades3D sequence :srcset: /generated/gallery/10-gradient-echo/images/sphx_glr_gre_stack_of_blades3D_sequence_002.png :class: sphx-glr-single-img .. GENERATED FROM PYTHON SOURCE LINES 62-67 Wider blades ------------ Increasing blade width reduces the number of blade orientations and increases the shared central-k-space region. .. GENERATED FROM PYTHON SOURCE LINES 67-81 .. code-block:: Python alternative = gre_stack_of_blades3D_sequence( n=96, n_z=8, blade_width=32, tr=None, n_dummy=0 ) .. rst-class:: sphx-glr-script-out .. code-block:: none blocks duration (s) acquisitions 16 lines 6400 8.04 1280 32 lines 6400 8.04 1280 .. GENERATED FROM PYTHON SOURCE LINES 82-84 .. code-block:: Python pp.plot.plot_kspace(alternative, color_by="shot") .. image-sg:: /generated/gallery/10-gradient-echo/images/sphx_glr_gre_stack_of_blades3D_sequence_003.png :alt: gre stack of blades3D sequence :srcset: /generated/gallery/10-gradient-echo/images/sphx_glr_gre_stack_of_blades3D_sequence_003.png :class: sphx-glr-single-img .. rst-class:: sphx-glr-timing **Total running time of the script:** (0 minutes 8.963 seconds) .. _sphx_glr_download_generated_gallery_10-gradient-echo_gre_stack_of_blades3D_sequence.py: .. only:: html .. container:: sphx-glr-footer sphx-glr-footer-example .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: gre_stack_of_blades3D_sequence.ipynb ` .. container:: sphx-glr-download sphx-glr-download-python :download:`Download Python source code: gre_stack_of_blades3D_sequence.py ` .. container:: sphx-glr-download sphx-glr-download-zip :download:`Download zipped: gre_stack_of_blades3D_sequence.zip ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_