Automated DICOM metadata and volumetric anatomical information extraction for radiation dosimetry

[摘要] Patient-specific dosimetry calculations based on simulation techniques have as a prerequisite the modeling of the modality system and the creation of voxelized phantoms. This procedure requires the knowledge of scanning parameters and patients' information included in a DICOM file as well as image segmentation. However, the extraction of this information is complicated and time-consuming. The objective of this study was to develop a simple graphical user interface (GUI) to (i) automatically extract metadata from every slice image of a DICOM file in a single query and (ii) interactively specify the regions of interest (ROI) without explicit access to the radiology information system. The user-friendly application developed in Matlab environment. The user can select a series of DICOM files and manage their text and graphical data. The metadata are automatically formatted and presented to the user as a Microsoft Excel file. The volumetric maps are formed by interactively specifying the ROIs and by assigning a specific value in every ROI. The result is stored in DICOM format, for data and trend analysis. The developed GUI is easy, fast and and constitutes a very useful tool for individualized dosimetry. One of the future goals is to incorporate a remote access to a PACS server functionality.

[发布机构] 1st Department of Radiology, Medical School, National and Kapodistrian University of Athens, Vas. Sofias 76, Athens; 11528, Greece^1;2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, Rimini 1, Athens; 12462, Greece^2;Radiology Research Unit, Medical Imaging Department, National and Kapodistrian University of Athens, Athens; 11528, Greece^3;Department of Medical Physics, Medical School, University of Patras, Rion; 15310, Greece^4;MRI-CT Medical Imaging Department, General Childrens Hospital of Athens Ag. Sophia, Greece^5

[效力级别] 医药卫生 [学科分类] 卫生学

[关键词] Anatomical information;Graphical user interfaces (GUI);MATLAB environment;Patient specific;Radiology information system;Regions of interest;Scanning parameters;Simulation technique