extract_accession_numbers

import os
import pydicom as dcm
from pydicom import dcmread

def get_accession_numbers(valid_dicom_folder):
    accession_numbers = []

    # List all DICOM files in the valid_dicom_folder
    for root, _, files in os.walk(valid_dicom_folder):
        for file in files:
            if file.lower().endswith(".dcm"):
                ds = dcmread(os.path.join(root, file))
                accession_number = ds.AccessionNumber
                if accession_number:
                    accession_numbers.append(accession_number)

    return accession_numbers

def save_accession_numbers(accession_numbers, output_file):
    with open(output_file, 'w') as file:
        for accession_number in accession_numbers:
            file.write(accession_number + '\n')

# Replace 'valid_dicom_folder' with the path to your folder containing valid DICOM files
valid_dicom_folder = ''

# Get accession numbers
accession_numbers = get_accession_numbers(valid_dicom_folder)

# Specify the path for the output file
output_file = ''

# Save the accession numbers to a text file
save_accession_numbers(accession_numbers, output_file)

# Accession numbers are now saved in 'accession_numbers.txt'
print(f"Accession numbers have been saved to {output_file}")