Measurement of the linear attenuation coefficients of breast tissues by synchrotron radiation computed tomography

Chen, R. C.; Longo, Renata; Rigon, Luigi; Zanconati, Fabrizio; Pellegrin, Andrea; Arfelli, Fulvia; Dreossi, Diego; Menk, R.H.; Vallazza, E.; Xiao, Tiqiao; Castelli, E.

doi:10.1088/0031-9155/55/17/008

Cited by 79 publications

(80 citation statements)

References 33 publications

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“…Most Monte Carlo calculations use the measurements of Hammerstein et al (1979) based on measurements from 5 samples of glandular tissue, 8 samples of adipose tissue and 6 samples of skin. Figure 3 shows the linear attenuation coefficient at 20 keV calculated from the Hammerstein data for adipose and glandular tissue and also values of these coefficients taken from or deduced from measurements of three other groups (Johns and Yaffe, 1987, Tomal et al , 2010 and Chen et al , 2010). Where available the range and average value for each tissue type is shown.…”

Section: Breast Size and Compositionmentioning

confidence: 99%

Dosimetry in x-ray-based breast imaging

2016

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The estimation of the mean glandular dose to the breast (MGD) for x-ray based imaging modalities forms an essential part of quality control and is needed for risk estimation and for system design and optimisation. This review considers the development of methods for estimating the MGD for mammography, digital breast tomosynthesis (DBT) and dedicated breast CT (DBCT). Almost all of the methodology used employs Monte Carlo calculated conversion factors to relate the measurable quantity, generally the incident air kerma, to the MGD. After a review of the size and composition of the female breast, the various mathematical models used are discussed, with particular emphasis on models for mammography. These range from simple geometrical shapes, to the more recent complex models based on patient DBCT examinations. The possibility of patient-specific dose estimates is considered as well as special diagnostic views and the effect of breast implants. Calculations using the complex models show that the MGD for mammography is overestimated by about 30% when the simple models are used. The design and uses of breast-simulating test phantoms for measuring incident air kerma are outlined and comparisons made between patient and phantom-based dose estimates. The most widely used national and international dosimetry protocols for mammography are based on different simple geometrical models of the breast, and harmonisation of these protocols using more complex breast models is desirable.

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Section: Breast Size and Compositionmentioning

confidence: 99%

Dosimetry in x-ray-based breast imaging

2016

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“…Several studies (40)(41)(42)(43) reported the x-ray attenuation properties of normal and neoplastic breast tissues. Differences in linear attenuation coefficients between malignant and normal breast tissues can be significant in the lowenergy range, especially when different tissue types from the same patient are compared.…”

Section: Discussionmentioning

confidence: 99%

Breast Tissue Characterization with Photon-counting Spectral CT Imaging: A Postmortem Breast Study

Ding¹,

Klopfer²,

Ducote³

et al. 2014

Radiology

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Purpose:To investigate the feasibility of breast tissue characterization in terms of water, lipid, and protein contents with a spectral computed tomographic (CT) system based on a cadmium zinc telluride (CZT) photon-counting detector by using postmortem breasts. Materials and Methods:Nineteen pairs of postmortem breasts were imaged with a CZT-based photon-counting spectral CT system with beam energy of 100 kVp. The mean glandular dose was estimated to be in the range of 1.8-2.2 mGy. The images were corrected for pulse pile-up and other artifacts by using spectral distortion corrections. Dual-energy decomposition was then applied to characterize each breast into water, lipid, and protein contents. The precision of the three-compartment characterization was evaluated by comparing the composition of right and left breasts, where the standard error of the estimations was determined. The results of dual-energy decomposition were compared by using averaged root mean square to chemical analysis, which was used as the reference standard.

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“…The effective electron density is estimated from the atomic and electronic cross sections; (8) This equation is simplified by substituting the atomic and electronic cross sections from Eqns. (6) and (7).…”

Section: Effective Electron Densitymentioning

confidence: 99%

Photon interaction parameters of different tissues of human organs

Manjunatha¹,

Seenappa²,

Sridhar³

et al. 2017

Def. Life. Sc. Jl.

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For proper planning in the radiography of different parts of human organs, knowledge of the photon interaction parameters in different tissues of human organs are essential. Studied the x-ray and gamma photon interaction parameters such as linear attenuation coefficient, half value layer, tenth value layer, mean free path and effective electron density of almost all tissues of human organs [Adipose tissue, Blood, Brain, Breast, Cell Nucleus, Eye Lens, GI tract, Heart, Kidney, Liver, Lung , Lymph, Muscle, Ovary, Pancreas, Cartilage, Red marrow, Spongiosa, Yellow marrow, Skin, Spleen, Testis, Thyroid, Skeleton cortical bone, Skeleton cranium, Skeleton femur, Skeleton humerus,Skeleton mandible, Skeleton ribs (2nd,6th), Skeleton ribs (10th), Skeleton sacrum, Skeleton spongiosa, Skeleton vertebral column (C4) and Skeleton vertebral column (D6, L3)]. The present work is useful in the planning of radiography for different organs. This work also gives useful information for radiotherapy and dosimetry.

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Measurement of the linear attenuation coefficients of breast tissues by synchrotron radiation computed tomography

Cited by 79 publications

References 33 publications

Dosimetry in x-ray-based breast imaging

Dosimetry in x-ray-based breast imaging

Breast Tissue Characterization with Photon-counting Spectral CT Imaging: A Postmortem Breast Study

Photon interaction parameters of different tissues of human organs

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