File Loader

The File Loader module provides functionalities for handling custom file loading in medical imaging workflows. It integrates with the cornerstoneFileImageLoader to enable seamless loading of file-based DICOM images and supports advanced operations like resetting and clearing the loader state.

Key Responsibilities

• Custom File Image ID Generation: Generates a custom image ID for files and array buffers to integrate with Cornerstone.
• Loader State Management: Provides functionality to reset the loader, clear caches, and free up memory.
• Integration with File Manager: Works in conjunction with the File Manager to manage and retrieve file-based image IDs.

How It Works

1. Custom Image ID Generation:

   • The getFileCustomImageId function handles both File and ArrayBuffer inputs.
   • It uses the cornerstoneFileImageLoader to generate and store a unique image ID.

2. State Reset:

   • Clears any rendered Cornerstone elements.
   • Resets the File Manager to remove all file-to-image ID mappings.
   • Clears cached images to free memory.

Main Functions

getFileCustomImageId

Syntax:

getFileCustomImageId(data: File | ArrayBuffer): string

Parameters:

Parameter	Type	Description
data	File or ArrayBuffer	HTML5 file object or an ArrayBuffer containing the image.

Returns:

string – The custom image ID generated for the file or array buffer.

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resetFileLoader

Syntax:

resetFileLoader(): void

Returns:

void – Reset the file manager and clears the image cache.