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+# DICOM to 3D Volume Converter
+
+## Overview
+
+A Python tool for converting DICOM series into 3D volume data in MHD or NIfTI format. This tool automatically processes DICOM files, extracts metadata, calculates slice spacing, and generates properly formatted 3D medical images.
+
+## Features
+
+- ✅ Automatic DICOM file detection and sorting by Instance Number
+- ✅ Slice spacing calculation using multiple methods
+- ✅ Comprehensive metadata extraction
+- ✅ Support for both MHD and NIfTI output formats
+- ✅ Proper handling of DICOM rescaling (slope and intercept)
+- ✅ Preservation of spatial information and orientation
+
+## Requirements
+
+### Python Dependencies
+pydicom
+numpy
+SimpleITK
+
+text
+
+### Installation
+```bash
+pip install pydicom numpy SimpleITK
+Usage
+
+Command Line Interface
+
+bash
+# Convert to MHD format
+python dicom_converter.py /path/to/dicom/folder output_volume.mhd
+
+# Convert to NIfTI format
+python dicom_converter.py /path/to/dicom/folder output_volume.nii.gz
+Parameters
+
+input_folder: Path to folder containing DICOM files (.dcm)
+output_file: Output file path (.mhd or .nii.gz)
+Processing Pipeline
+
+1. DICOM File Discovery
+
+Scans specified folder for .dcm files
+Validates DICOM file integrity
+Reports total number of files found
+2. Instance Number Sorting
+
+Reads InstanceNumber from DICOM headers
+Sorts files in correct slice order
+Ensures proper volume reconstruction
+3. Metadata Extraction
+
+Extracted Metadata:
+
+Pixel spacing (X, Y dimensions)
+Slice spacing (Z dimension)
+Image orientation and position
+Rows and columns dimensions
+Bits allocated and stored
+Pixel representation
+4. Slice Spacing Calculation
+
+Primary Methods:
+
+SliceLocation Difference: Uses SliceLocation DICOM tag
+ImagePositionPatient: Calculates Euclidean distance between slices
+Fallback: Defaults to 1.0 mm if calculation fails
+5. Volume Data Creation
+
+Reads pixel arrays from all DICOM files
+Applies rescaling (slope and intercept) if needed
+Stacks slices into 3D volume array
+Maintains original data type and values
+6. File Export
+
+Supported Formats:
+
+MHD/RAW: MetaImage format with enhanced metadata
+NIfTI: Standard neuroimaging format
+Output Specifications
+
+MHD Format Features
+
+Proper voxel spacing in all three dimensions
+Transform matrix for correct orientation
+Anatomical orientation (RAS)
+Offset and center of rotation information
+NIfTI Format Features
+
+Correct spatial coordinates
+Proper voxel dimensions
+Compatible with most medical imaging software
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