DICOM Orientation & Concatenation Bundle (Parts 1 & 2) Convert, Standardize & Stitch CT Series into One Seamless Dataset

🖥️ Product Overview

This bundle gives you both Part 1 (FFS → HFS Orientation Fix) and Part 2 (CT Concatenation & Registration), providing a complete solution for standardizing and stitching DICOM CT datasets.

With these scripts, you can:

1. Convert Feet-First Supine (FFS) to Head-First Supine (HFS) by adjusting metadata tags (Part 1).
2. Concatenate multiple CT scans (supine + prone or partial body scans) into one seamless dataset using registration, seam line blending, and resampling (Part 2).

📦 What’s Included

• Part 1: Orientation Fix Scripts
• v2: Robust version (adds Image Position z-component fix for universal viewer compatibility).
• Part 2: Concatenation Script
• Rigid registration (MIP-based).
• Seam line selection + feathering blend.
• Uniform grid resampling.
• Concatenated export as a new DICOM series.
• Full Documentation with comments and usage notes.

✨ Features

• Metadata-Only Orientation Fix: Non-destructive, no pixel data changes.
• Geometry-Aware Sorting: Preserves 3D spatial consistency.
• Seamless Concatenation: Aligns, blends, and exports merged CTs.
• Universal Compatibility: Works across CT, MR, PET, CBCT.
• Minimal Dependencies: Clean Python code with pydicom, numpy, and SimpleITK.

✅ Why This Bundle is Essential

• Solve orientation mismatches between scanners or sessions.
• Stitch supine/prone or partial scans into a single whole-body dataset.
• Prepare robust inputs for deformable registration, dose mapping, and radiotherapy workflows.
• Save time and avoid error-prone manual processing with automated scripts.

👩‍⚕️ Who It’s For

Medical physicists, imaging scientists, and developers who want a fast, reproducible workflow for cleaning and merging DICOM series.

⚡ Pro Tip: Part 1 ensures all series share the same orientation, while Part 2 builds on that foundation to concatenate datasets into one seamless series.