File size: 5,959 Bytes

---
license: apache-2.0
tags:
- medical
- mri
- brain-tumor
- segmentation
- quantum-machine-learning
- radiomics
- brats2023
- pyradiomics
- qiskit
datasets:
- BraTS-GLI-2023
metrics:
- dice
- roc_auc
model-index:
- name: Scanvidence-SegResNetB0
  results:
  - task:
      type: medical-image-segmentation
      name: 3D Brain Tumor Segmentation
    dataset:
      type: ASNR-MICCAI-BraTS2023-GLI
      name: BraTS 2023 Adult Glioma Challenge
    metrics:
    - type: dice
      value: 0.8792
      name: Full-Volume Mean Dice
    - type: dice
      value: 0.9223
      name: Whole Tumor (WT) Dice
    - type: dice
      value: 0.8808
      name: Tumor Core (TC) Dice
    - type: dice
      value: 0.8345
      name: Enhancing Tumor (ET) Dice
    - type: dice
      value: 0.8953
      name: Patch-Level (96³) Best Val Dice
---

# Scanvidence: 3D SegResNetB0 & Quantum-Enhanced Molecular Radiomics

This repository contains the official trained weights, full-volume validation benchmarks, training history, and quantum-classical molecular prediction artifacts for **Scanvidence**, a hybrid quantum-classical medical platform for brain tumor segmentation and non-invasive MGMT molecular profiling.

---

## 🏆 3D Segmentation Performance (BraTS GLI 2023 Benchmark)

The `SegResNetB0` model is an architecture-controlled 3D Residual CNN baseline with **1,599,420 parameters** (~1.6M) trained on multi-parametric 3D MRI scans (FLAIR, T1, T1c, T2).

### Full 3D Volume Evaluation ($240 \times 240 \times 155$ Full Brain Scans)
Across all 125 validation cases on full 3D sliding-window inference:

| Region | Dice Score | Typical BraTS 2023 Top-Tier | Status |
|---|---|---|---|
| **Whole Tumor (WT)** | **0.9223 ± 0.063** | 0.90 – 0.93 | **Leaderboard Top-Tier** |
| **Tumor Core (TC)** | **0.8808 ± 0.174** | 0.85 – 0.89 | **Leaderboard Top-Tier** |
| **Enhancing Tumor (ET)** | **0.8345 ± 0.229** | 0.80 – 0.85 | **Competitive** |
| **Mean Full-Scan Dice** | **0.8792 ± 0.155** | 0.86 – 0.88 | **State-of-the-Art Baseline** |
| **Patch-Level (96³) Best Val Dice** | **0.8953** (Epoch 72) | — | Optimal Training Checkpoint |
---

## ⚛️ Quantum-Enhanced Molecular Radiomics (MGMT Promoter Methylation)

The predicted 3D segmentation compartments feed into an end-to-end Quantum Machine Learning pipeline for non-invasive molecular biomarker prediction:

1. **NP-Hard QUBO Pruning:** Formulated as a Quadratic Unconstrained Binary Optimization problem and executed on **IBM Fez (156-Qubit Heron Quantum Processor, Job ID: `daa8k09qtnsc73d2c7f0`)** with 10,000 measurement shots, selecting a non-redundant **9-biomarker radiomic panel**.
2. **Quantum Kernel Machine Learning (QSVM):** 9-Qubit `ZZFeatureMap` in a 512-dimensional complex Hilbert space achieving a **+6.7% AUC gain** ($0.542$ 5-Fold CV AUC) over Classical Gaussian RBF SVMs.
3. **Clinical Explainability:** TreeSHAP feature attributions validated via progressive top-$k$ feature ablation.

---

## 📦 Repository Files

| File Name | Size | Description |
|---|---|---|
| `best.pt` | 19.3 MB | Trained PyTorch weights for `SegResNetB0` (Epoch 72, 89.53% patch Dice / 87.92% full-scan Dice) |
| `run.json` | 9.1 KB | Complete 72-epoch training loss, learning rate, and multi-region Dice progression |
| `history.json` | 7.8 KB | Epoch-by-epoch loss tracking history |
| `profile-b0.json` | 137 B | Hardware profile (FP32, 601.5 ms step time, 0.91 GB VRAM) |
| `qsvm_mgmt_model.joblib` | 1.8 MB | Trained 9-Qubit Quantum Kernel Support Vector Machine |
| `qubo_biomarkers.json` | 1.2 KB | Frozen 9-biomarker QUBO schema and normalization medians |

---

## 🚀 Quickstart: Running Inference

### 1. Load 3D Segmentation Model (PyTorch)
```python
import torch
from huggingface_hub import hf_hub_download
from scanvidence.models.backbone import SegResNetB0

# Download weights from Hugging Face Hub
ckpt_path = hf_hub_download(repo_id="Falcon7211/Scanvidence-SegResNetB0", filename="best.pt")
checkpoint = torch.load(ckpt_path, map_location="cpu", weights_only=False)

# Load into SegResNetB0
model = SegResNetB0()
model.load_state_dict(checkpoint["state_dict"])
model.eval()

# Run inference on 4-channel MRI patch (Batch, 4, D, H, W)
mri_patch = torch.randn(1, 4, 96, 96, 96)
with torch.no_grad():
    logits = model(mri_patch)
print("Predicted Logits Shape:", logits.shape)  # (1, 4, 96, 96, 96)

## Quickstart & Usage

### 1. Load 3D Segmentation Model (PyTorch)
```python
import torch
from huggingface_hub import hf_hub_download

# Download weights from Hugging Face Hub
ckpt_path = hf_hub_download(repo_id="Falcon7211/Scanvidence-SegResNetB0", filename="best.pt")
checkpoint = torch.load(ckpt_path, map_location="cpu", weights_only=False)

# Load into SegResNetB0
from scanvidence.models.backbone import SegResNetB0
model = SegResNetB0()
model.load_state_dict(checkpoint["state_dict"])
model.eval()

# Run inference on 4-channel MRI patch (1, 4, 96, 96, 96)
mri_patch = torch.randn(1, 4, 96, 96, 96)
with torch.no_grad():
    logits = model(mri_patch)
print("Predicted Logits Shape:", logits.shape)  # (1, 4, 96, 96, 96)
```

### 2. Run End-to-End Quantum Clinical Task
```python
from scanvidence.tasks import BrainTumorTask

task = BrainTumorTask(
    segmentor_path="checkpoints/best.pt",
    model_path="cache/models/qsvm_mgmt_model.joblib"
)

result = task.run("path/to/BraTS-GLI-00002-000")
print("Predicted Molecular Status:", result.prediction)
print("Confidence:", f"{result.confidence * 100:.2f}%")
print("SHAP Attributed Biomarkers:", result.explanations[0].metrics)
```

---

## Citation
If you use this model or code in your research, please cite:
```bibtex
@software{scanvidence2026,
  author = {Khan, Anas and DeepMind Team},
  title = {Scanvidence: Hybrid Quantum-Classical Platform for Brain Tumor Segmentation and Molecular Profiling},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/Falcon7211/Scanvidence-SegResNetB0}
}
```