Simple method for computing scattered radiation in breast tomosynthesis

Estimation of scattered radiation in digital breast

13 Digital breast tomosynthesis (DBT) is a promising technique to overcome the tissue 14 superposition limitations found in planar 2D X-ray mammography. However, as most 15 DBT systems do not employ an anti-scatter grid, the levels of scattered radiation 16 recorded within the image receptor are significantly higher than that observed in planar 17 2D X-ray mammography. Knowledge of this field i...

Radiation dosimetry in digital breast tomosynthesis: report of AAPM Tomosynthesis Subcommittee Task Group 223.

The radiation dose involved in any medical imaging modality that uses ionizing radiation needs to be well understood by the medical physics and clinical community. This is especially true of screening modalities. Digital breast tomosynthesis (DBT) has recently been introduced into the clinic and is being used for screening for breast cancer in the general population. Therefore, it is important ...

A SIMPLE ALGORITHM FOR COMPUTING TOPOLOGICAL INDICES OF DENDRIMERS

Dendritic macromolecules’ have attracted much attention as organic examples of well-defined nanostructures. These molecules are ideal model systems for studying how physical properties depend on molecular size and architecture. In this paper using a simple result, some GAP programs are prepared to compute Wiener and hyper Wiener indices of dendrimers.

Breast cancer detection in digital breast tomosynthesis

A SIMPLE ALGORITHM FOR COMPUTING DETOUR INDEX OF NANOCLUSTERS

Let G be the chemical graph of a molecule. The matrix D = [dij ] is called the detour matrix of G, if dij is the length of longest path between atoms i and j. The sum of all entries above the main diagonal of D is called the detour index of G. In this paper, a new algorithm for computing the detour index of molecular graphs is presented. We apply our algorithm on copper and silver nanoclusters ...