A method for estimating compressed breast thickness during mammography

Burch, A; J, Law

doi:10.1259/0007-1285-68-808-394

Cited by 31 publications

(15 citation statements)

References 1 publication

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“…Compressed breast thickness was derived using a method similar to that of Burch and Law (1995). They proposed a thickness measurement based on the imaging of lead markers placed on the compression plate and by calibration of the breast thickness on the imaged positions of the lead markers.…”

Section: Methodsmentioning

confidence: 99%

Glandularity and mean glandular dose determined for individual women at four regional breast cancer screening units in The Netherlands

et al. 2006

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The nationwide breast cancer screening programme using mammography has been in full operation in The Netherlands since 1997. There is concern that the mean glandular doses due to mammography might be differing between different regions of the country due to differences in glandularity and compressed breast thickness. To investigate regional differences, glandularity, compressed breast thickness and mean glandular dose were determined for individual breasts during screening at mammography units at four locations in The Netherlands. Differences in glandularity were observed, which could be related qualitatively to differences in age of the participants at the different locations. Mean glandular dose depends on compressed breast thickness, glandularity and technical conditions of screening. The lowest average value of the mean glandular dose was found for the unit in Amsterdam. This is most likely due to the use of the Mo/Rh anode/filter combination at this unit, in addition to the Mo/Mo combination. At the other three units, almost exclusively the Mo/Mo anode/filter combination was used. Differences in mean glandular dose averaged per unit could be related mainly to differences in tube-current exposure-time product values. Consequently, it is concluded that differences in mean glandular dose at different units are marginal.

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Section: Methodsmentioning

confidence: 99%

Glandularity and mean glandular dose determined for individual women at four regional breast cancer screening units in The Netherlands

et al. 2006

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“…It is well known (Burch and Law 1995) that the indication of breast thickness on mammography units is not always reliable, since the compression plate can deform considerably. Burch and Law have proposed a thickness measurement based on the imaging of lead markers placed on the compression plate and by calibration of the breast thickness on the imaged positions of the lead markers.…”

Section: Determination Of Compressed Breast Thicknessmentioning

confidence: 99%

Method for determination of the mean fraction of glandular tissue in individual female breasts using mammography

Jansen¹,

Veldkamp²,

Thijssen³

et al. 2005

Phys. Med. Biol.

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The nationwide breast cancer screening programme using mammography has been in full operation in the Netherlands since 1997. Quality control of the screening programme has been assigned to the National Expert and Training Centre for Breast Cancer Screening. Limits are set to the mean glandular dose and the centre monitors these for all facilities engaged in the screening programme. This procedure is restricted to the determination of the entrance dose on a 5 cm thick polymethylmethacrylate (PMMA) phantom. The mean glandular dose for a compressed breast is estimated from these data. Individual breasts may deviate largely from this 5 cm PMMA breast model. Not only may the compressed breast size vary from 2 to 10 cm, but breast composition varies also. The mean glandular dose is dependent on the fraction of glandular tissue (glandularity) of the breast. To estimate the risk related to individual mammograms requires the development of a method for determination of the glandularity of individual breasts. A method has been developed to derive the glandularity using the attenuation of mammography x-rays in the breast. The method was applied to a series of mammograms at a screening unit. The results, i.e., a glandularity of 93% within the range of 0 to 1, were comparable with data in the literature. The glandularity as a function of compressed breast thickness is similar to results from other investigators using differing methods.

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“…To adaptively quantify the amount of contrast material in breast, a priori knowledge of the breast thickness for each pixel is required. However, it is also known that the built-in thickness measurement is not accurate in many clinical mammography systems which employ a spring-loaded paddle [8,9]. Therefore, a triple-energy method is employed, which can provide a third image to overcome the limitation of the dual-energy method.…”

Section: Discussionmentioning

confidence: 99%

“…However, in many clinical mammography systems which employ a spring-loaded paddle, the physical thickness of the breast may not be uniform due to deformation and tilt of the compression paddle [7]. Furthermore, it is reported that the built-in thickness measurement is not accurate [8,9], which can affect the performance. Triple-energy CEDM, which provides a third image, has been considered to overcome the necessity of thickness information.…”

Section: Introductionmentioning

confidence: 99%

A Quantification Method for Breast Tissue Thickness and Iodine Concentration Using Photon-Counting Detector

Han

2015

J Digit Imaging

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The purpose of contrast-enhanced digital mammography (CEDM) is to facilitate detection and characterization of the lesions in the breast using intravenous injection of an iodinated contrast agent. CEDM produces iodine images with gray levels proportional to iodine concentration at each pixel, which can be considered as quantification of iodine. While dual-energy CEDM requires an accurate knowledge of the thickness of compressed breast for the quantification, it is known that the accuracy of the built-in thickness measurement is not satisfactory. Triple-energy CEDM, which can provide a third image, can alleviate the limitation of dual-energy CEDM. If triple exposure technique is applied, it can lead to increased risk of motion artifact. An energy-resolving photoncounting detector (PCD) that can acquire multispectral X-ray images can reduce the risk of motion artifact. In this research, an easily implementable method for iodine quantification in breast imaging was suggested, and it was applied to the images of breast phantom with various iodine concentrations. The iodine concentrations in breast phantom simulate lesions filled with different iodine concentrations in the breast. The result shows that the proposed method can quantify the iodine concentrations in breast phantom accurately.

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A method for estimating compressed breast thickness during mammography

Cited by 31 publications

References 1 publication

Glandularity and mean glandular dose determined for individual women at four regional breast cancer screening units in The Netherlands

Glandularity and mean glandular dose determined for individual women at four regional breast cancer screening units in The Netherlands

Method for determination of the mean fraction of glandular tissue in individual female breasts using mammography

A Quantification Method for Breast Tissue Thickness and Iodine Concentration Using Photon-Counting Detector

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