tue-carotid: sync data card and main image with GitHub

tue-carotid/README.md

@@ -34,7 +34,7 @@ zea process \
 ## Dataset Description
 
 The dataset includes carotid artery scans from 10 subjects.
-Each file includes 100 frames, at least one cardiac cycle.
+Each file includes 150 frames, at least one cardiac cycle.
 The acquisition scheme it consists of 128 line scanning interleaved with 21 plane waves.
 
 Included views:
@@ -88,10 +88,35 @@ zea v1.3.0
 
 **Current OpenH-RF release:** 80 HDF5 files; 435.40 GB (435,403,030,528 bytes) stored; root `zea_version` **0.1.6**. Sizes include all HDF5 contents and use decimal units (MB = 10^6 bytes, GB = 10^9 bytes, TB = 10^12 bytes), not decoded-array memory or original-source download sizes.
 
-- Number of samples / frames / acquisitions
-- Train / validation / test split (if applicable)
-- Total size on disk
-- Per-sample feature table (name, shape, dtype, units, description) — see NV-Raw2Insights-US for reference format
+- **Samples / frames / acquisitions:** 80 acquisitions (one HDF5 file each) from
+  10 subjects, 150 frames per acquisition — 12,000 frames total.
+- **Transmit events per frame:** 149 — 128 focused lines interleaved with 21 plane waves.
+- **Train / validation / test split:** none; each file is a single acquisition.
+- **Total size on disk:** 435.40 GB (435,403,030,528 bytes).
+
+### Per-File Feature Summary
+
+Every file has one track (`tracks/track_0`) with the same field structure;
+`n_frames = 150`, `n_tx = 149`, `n_ax = 2176`, `n_el = 128`.
+
+| Field | Shape | Dtype | Units | Description |
+|---|---|---|---|---|
+| `tracks/track_0/data/raw_data` | `(150, 149, 2176, 128, 1)` | int16 | ADC counts | Raw per-element RF channel data: (frames, transmits, axial samples, elements, 1) |
+| `tracks/track_0/scan/t0_delays` | `(149, 128)` | float32 | s | Per-transmit, per-element transmit delay |
+| `tracks/track_0/scan/tx_apodizations` | `(149, 128)` | float32 | unitless [-1, 1] | Per-transmit, per-element transmit apodization weight |
+| `tracks/track_0/scan/polar_angles` | `(149,)` | float32 | rad | Per-transmit polar steering angle |
+| `tracks/track_0/scan/azimuth_angles` | `(149,)` | float32 | rad | Per-transmit azimuth steering angle |
+| `tracks/track_0/scan/focus_distances` | `(149,)` | float32 | m | Per-transmit focal distance (`inf` for the 21 plane waves) |
+| `tracks/track_0/scan/transmit_origins` | `(149, 3)` | float32 | m | Per-transmit beam origin (x, y, z) |
+| `tracks/track_0/scan/initial_times` | `(149,)` | float32 | s | Per-transmit A/D start time |
+| `tracks/track_0/scan/time_to_next_transmit` | `(150, 149)` | float32 | s | Per-frame, per-transmit inter-transmit interval |
+| `probe/probe_geometry` | `(128, 3)` | float32 | m | Element positions (x, y, z) |
+
+Scalars: `probe/name` = `verasonics_l11_5v` (linear, 128 elements),
+`probe/probe_center_frequency` = 6.25 MHz, `scan/center_frequency` =
+`scan/demodulation_frequency` = 7.8125 MHz, `scan/sampling_frequency` =
+31.25 MHz, `scan/sound_speed` = 1540 m/s. `us_machine` = Verasonics Vantage 256.
+No derived data products are stored; `raw_data` is the only `data/` field.
 
 ## Subject Metadata
 
@@ -99,7 +124,7 @@ None
 
 ## Data Validation
 
-[reconstruct.py](./reconstruct.py)
+[reconstruct.py](https://github.com/open-h/OpenH-RF/blob/main/datasets/tue-carotid/reconstruct.py)
 [pipeline.yaml](./pipeline.yaml)
 
 ## Known Issues