dicube.dicom.dcb_streaming

dicom.dcb_streaming

DCB Streaming Reader for PACS Viewer

Provides efficient streaming access to DCB files for on-demand DICOM frame delivery. Keeps files open and metadata cached for low-latency responses.

Classes

Name	Description
DcbStreamingReader	DCB file streaming reader for PACS Viewer with intelligent caching.

DcbStreamingReader

dicom.dcb_streaming.DcbStreamingReader(
    dcb_file_path,
    chunk_size=10,
    cache_size=50,
    force_uncompressed=False,
)

DCB file streaming reader for PACS Viewer with intelligent caching.

Features: - Chunk-based caching to balance memory usage and performance - Sliding window preloading for sequential browsing - LRU eviction policy for memory management - Thread-safe operations for concurrent access

Example: reader = DcbStreamingReader(‘study.dcbs’, chunk_size=10, cache_size=50) dicom_bytes = reader.get_dicom_for_frame(50) reader.close()

Methods

Name	Description
clear_cache	Clear all cached data to free memory.
close	Close file handle.
get_cache_stats	Get cache statistics for monitoring.
get_dicom_for_frame	Get DICOM data for the specified frame with intelligent caching.
get_frame_count	Get total number of frames.
get_metadata	Get cached metadata information.

clear_cache

dicom.dcb_streaming.DcbStreamingReader.clear_cache()

Clear all cached data to free memory.

close

dicom.dcb_streaming.DcbStreamingReader.close()

Close file handle.

get_cache_stats

dicom.dcb_streaming.DcbStreamingReader.get_cache_stats()

Get cache statistics for monitoring.

get_dicom_for_frame

dicom.dcb_streaming.DcbStreamingReader.get_dicom_for_frame(frame_index)

Get DICOM data for the specified frame with intelligent caching.

Args: frame_index: Frame index (0-based)

Returns: bytes: Complete DICOM file data

Raises: IndexError: If frame_index is out of range RuntimeError: If reading fails

get_frame_count

dicom.dcb_streaming.DcbStreamingReader.get_frame_count()

Get total number of frames.

get_metadata

dicom.dcb_streaming.DcbStreamingReader.get_metadata()

Get cached metadata information.