INDIVIDUALISED CALCULATION OF TISSUE IMPARTED ENERGY IN BREAST TOMOSYNTHESIS

Autor: Hilde Bosmans, Remy Klausz, N. Geeraert, Isabelle Bloch, Serge Muller
Rok vydání: 2016
Předmět:
medicine.medical_specialty
Breast imaging
Radiation Dosage
computer.software_genre
030218 nuclear medicine & medical imaging
03 medical and health sciences
Imaging
Three-Dimensional
0302 clinical medicine
Voxel
Image Processing
Computer-Assisted
medicine
Humans
Mammography
Computer Simulation
Radiology
Nuclear Medicine and imaging
Breast tomosynthesis
Breast
Radiometry
Radiation
Anthropometry
Radiological and Ultrasound Technology
medicine.diagnostic_test
business.industry
X-Rays
Public Health
Environmental and Occupational Health
Reproducibility of Results
General Medicine
Digital Breast Tomosynthesis
Radiographic Image Enhancement
Adipose Tissue
030220 oncology & carcinogenesis
Calibration
Radiographic Image Interpretation
Computer-Assisted
Female
Anthropomorphic phantom
Radiology
business
Monte Carlo Method
computer
Algorithms
Energy (signal processing)
Biomedical engineering
Zdroj: Radiation Protection Dosimetry. 169:267-273
ISSN: 1742-3406
0144-8420
DOI: 10.1093/rpd/ncw106
Popis: The imparted energy to the glandular tissue in the breast (glandular imparted energy, GIE) is proposed for an improved assessment of the individual radiation-induced risk resulting from X-ray breast imaging. GIE is computed from an estimation of the quantity and localisation of glandular tissue in the breast. After a digital breast tomosynthesis (DBT) acquisition, the volumetric glandular content (volumetric breast density, VBD) is computed from the central X-ray projection. The glandular tissue distribution is determined by labelling the DBT voxels to ensure the conservation of the VBD. Finally, the GIE is calculated by Monte Carlo computation on the resulting tissue-labelled DBT volume. For verification, the method was applied to 10 breast-shaped digital phantoms made of different glandular spheres in an adipose background, and to a digital anthropomorphic phantom. Results were compared to direct GIE computations on the phantoms considered as 'ground-truth'. The major limitations in accuracy are those of DBT, in particular the limited z-resolution. However, for most phantoms, the results can be considered as acceptable.
Databáze: OpenAIRE
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