J-Endres · Oct 19, 2026 · Oct 19, 2026 · Oct 19, 2026 · Oct 19, 2026 · Oct 19, 2026
diff --git a/.github/workflows/deploy_docs.yml b/.github/workflows/deploy_docs.yml
@@ -15,7 +15,6 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-          submodules: true
       - name: Install latest mdbook
         run: |
           tag=$(curl 'https://api.github.com/repos/rust-lang/mdbook/releases/latest' | jq -r '.tag_name')

diff --git a/.gitmodules b/.gitmodules
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,9 @@
+- 1.2.0
+  - add `fid_graph`: builds a graph with only `z0` and one `+` state per repetition, as an alternative to `compute_graph` without running the prepass
+  - fix: `import_pulseq_rs` stores `pulse.freq_offset` in Hz, matching the pydissect importer (was rad/s) (#197)
+  - speed up `import_pulseq_rs` by integrating gradient moments in NumPy instead of once per event, ~4-13x faster on typical sequences (#194)
+  - fix: cast values to native Python floats before writing the MRD header, so the XML no longer contains `np.float64(...)` (#189)
+  - fix: update pulseq-rs for full rotation extension support and soft-delay default
 - 1.1.2
   - fix: diffusion for z states was missing a (2pi)² in the b-value computation
 - 1.1.1

diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mrzero_core"
-version = "1.1.2"
+version = "1.2.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

diff --git a/documentation/src/SUMMARY.md b/documentation/src/SUMMARY.md
@@ -11,7 +11,6 @@
     - [Pulseq Integration](integration-pulseq.md)
     - [Matlab Integration](integration-matlab.md)
     - [Pulseq-zero](integration-pulseqzero.md)
-    - [ISMRMD]()
 - [FAQ](faq.md)
 
 ---
@@ -22,7 +21,6 @@
   - [Loading and generating phantoms](nifti-generate.md)
   - [Specification](nifti-spec.md)
   - [Coordinate System](nifti-coords.md)
-- [Motion simulation]()
 - [State selection](state_selection.md)
 - [API overview](api.md)
     - [Sequence building blocks](api-sequence.md)
@@ -35,12 +33,8 @@
 - [MR-zero FFT/sign conventions](fft_sign_conventions.md)
 
 
-# 📊 Pulseq-zero
-
-- [Introduction](pulseqzero-intro.md)
-- [Math methods for differentiability](pulseqzero-math.md)
-
-
 ---
 
 [Literature](literature.md)
+
+[Changelog](changelog.md)
diff --git a/documentation/src/api-simulation.md b/documentation/src/api-simulation.md
@@ -83,6 +83,23 @@ Returns the computed [`Graph`](#graph).
 | `size` | used to scale gradients to phantom FOV if the [`Sequence`](api-sequence.md#sequence) sets `normalize_grads=True` |
 
 
+### `fid_graph`
+
+Alternative to [`compute_graph`](#compute_graph) that skips the pre-pass.
+Returns a [`Graph`](#graph) that only contains `z0` and a single `+` state per repetition, which [`execute_graph`](#execute_graph) simulates as FID signal.
+Every excitation pulse (`PulseUsage.EXCIT` or `UNDEF`) creates a new `+` state from `z0` and discards the previous one; refocusing pulses (`REFOC`) conjugate it, all other pulses only scale it.
+Stimulated echoes and other states are never simulated, so this is only exact for perfectly spoiled sequences.
+
+```python
+graph = mr0.fid_graph(seq)
+signal = mr0.execute_graph(graph, seq, data)
+```
+
+| Parameter | Description |
+| --------- | ----------- |
+| `seq` | the [`Sequence`](api-sequence.md#sequence) to compute the graph for |
+
+
 ### `execute_graph`
 
 Takes the [`Sequence`](api-sequence.md#sequence), the [`SimData`](api-phantom.md#simdata) and the [`Graph`](#graph) and calculates the measured ADC signal.

diff --git a/documentation/src/api.md b/documentation/src/api.md
@@ -31,6 +31,7 @@ import MRzeroCore as mr0
     - [`mr0.isochromat_sim`](api-simulation.md#isochromat_sim)
     - [`mr0.compute_graph`](api-simulation.md#compute_graph)
     - [`mr0.compute_graph_ext`](api-simulation.md#compute_graph_ext)
+    - [`mr0.fid_graph`](api-simulation.md#fid_graph)
     - [`mr0.Graph`](api-simulation.md#graph)
     - [`mr0.execute_graph`](api-simulation.md#execute_graph)
 - [Reconstruction](api-reconstruction.md)

diff --git a/documentation/src/changelog.md b/documentation/src/changelog.md
@@ -0,0 +1,3 @@
+# Changelog
+
+{{#include ../../CHANGELOG.md}}
diff --git a/documentation/src/external/pulseq-zero b/documentation/src/external/pulseq-zero
diff --git a/documentation/src/faq.md b/documentation/src/faq.md
@@ -30,7 +30,7 @@ seq = pp.Sequence()
 signal, ktraj_adc = mr0.util.simulate(seq)  # seq is PyPulseq object
 ```
 Note, this is will still generate a temporary seq file.
-For avoiding seq files completely, check out [Pulseq-zero](https://github.com/pulseq-frame/pulseq-zero) 
+For avoiding seq files completely, check out [Pulseq-zero](https://github.com/MRsources/pulseq-zero) 
 
 
 ## How do I use custom phantoms with B0 field modifications?

diff --git a/documentation/src/integration-pulseqzero.md b/documentation/src/integration-pulseqzero.md
@@ -1 +1,8 @@
 # Pulseq-zero
+
+[Pulseq-zero](https://github.com/MRsources/pulseq-zero) lets you define sequences with [PyPulseq](https://github.com/imr-framework/pypulseq) and optimize them with MR-zero, without writing `.seq` files in between.
+
+- [README](https://github.com/MRsources/pulseq-zero/blob/main/README.md): installation, usage and examples
+- [MATH.md](https://github.com/MRsources/pulseq-zero/blob/main/MATH.md): math methods used for differentiability
+
+Examples are listed in the [Playground](playground.md).
diff --git a/documentation/src/playground.md b/documentation/src/playground.md
@@ -40,7 +40,7 @@ These .seq files could also be measured on any MRI scanner using a Pulseq interp
 ## MR-zero optimization
 
 Gradient descent optimizations using automatic differentiation by backpropagation.
-Some notebooks use [pulseq-zero](https://github.com/pulseq-frame/pulseq-zero) for optimizable sequence definitions with PyPulseq.
+Some notebooks use [pulseq-zero](https://github.com/MRsources/pulseq-zero) for optimizable sequence definitions with PyPulseq.
 
 | Notebook | ![](https://colab.research.google.com/assets/colab-badge.svg) |
 | -------- | ------------------------------------------------------------- |

diff --git a/documentation/src/pulseqzero-intro.md b/documentation/src/pulseqzero-intro.md
diff --git a/documentation/src/pulseqzero-math.md b/documentation/src/pulseqzero-math.md
diff --git a/pyproject.toml b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "mrzerocore"
-version = "1.1.2"
+version = "1.2.0"
 description = "Core functionality of MRzero"
 authors = [
     {name = "Jonathan Endres", email = "jonathan.endres@uk-erlangen.de"},

diff --git a/python/MRzeroCore/__init__.py b/python/MRzeroCore/__init__.py
@@ -24,6 +24,7 @@
 from .simulation.isochromat_sim import isochromat_sim
 from .simulation.pre_pass import compute_graph, compute_graph_ext, merge_graphs, Graph
 from .simulation.main_pass import execute_graph
+from .simulation.fid_graph import fid_graph
 from .simulation.sig_to_mrd import sig_to_mrd
 from .reconstruction import reco_adjoint
 from .pulseq.exporter import pulseq_write_cartesian