Composition of mammographic phantom materials.

Geise, Richard A.; Palchevsky, A

doi:10.1148/radiology.198.2.8596830

Cited by 49 publications

(39 citation statements)

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“…A polynomial fit of the percent glandularity is used to predict the mean compressed breast thickness for any desired breast tissue composition. Geise and Palchevsky ( 4 ) reported that the width of the glandularity distribution increases for compressed thickness between 3 cm and 7 cm but is narrower above and below this range. The phantoms were assembled from 1‐cm thick slabs of homogeneous BRTES material, with one slab in each phantom having a thickness an appropriate fraction of a centimeter to produce noninteger centimeter thicknesses when desired.…”

Section: Methodsmentioning

confidence: 99%

“…( 4 ) Once phantoms representing the attenuation properties and densities of 0% and 100% glandularity were obtained, they were combined in linear combinations of fractional weight percentage in order to provide BRTES materials of the desired glandularity.…”

Section: Methodsmentioning

confidence: 99%

“…Final thickness of the BRTES phantoms was based on the correlation of glandularity and thickness determined by Geise and Palchevsky ( 4 ) and illustrated in Fig. 1 as the representative glandular/adipose composition as a function of mean breast thickness.…”

Section: Methodsmentioning

confidence: 99%

“…Glandularity is variable for individuals, but has been observed to correlate with compressed breast thickness ( 4 ) and age. ( 5 ) Both glandularity and breast thickness affect patient dose with general expectations of increased dose with increasing thickness (glandularity held constant) and increasing glandularity (thickness held constant).…”

Section: Introductionmentioning

confidence: 99%

“…Reviews of actual mammograms by Geise and Palchevsky ( 4 ) have determined the glandular fraction to span a wide range with the average glandularity in their observed population to be 34% in contrast to the commonly assumed 50%. Helvie et al ( 6 ) reviewed compressed breast thickness and suggested the average compressed breast thickness is approximately 4.4 cm based on the 250 patients evaluated.…”

Section: Introductionmentioning

confidence: 99%

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A tissue‐equivalent phantom series for mammography dosimetry

Argo

Hintenlang²,

Hintenlang³

2004

J Applied Clin Med Phys

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A breast tissue‐equivalent series (BRTES) of phantoms is manufactured to mimic both the attenuation and the density of the range of glandular and adipose tissue compositions encountered in mammography. The BRTES simulates breast tissues across the range of 20% to 70% glandularity and can be assembled in a variety of thicknesses to represent a compressed breast thickness corresponding to glandularity to simulate various patient demographics. The fabrication techniques are presented, and the physical properties of the completed series of phantoms are described. The BRTES phantoms provide a dosimetry comparison with commonly used phantoms, including the American College of Radiology accreditation phantom and BR12, a 50% glandularity tissue‐equivalent material. The comparison shows that the average glandular dose is a strong function of compressed breast thickness and tissue composition. Patient doses measured using photo‐timed exposures with the BRTES phantoms can be up to a factor of 3 greater than or less than the doses predicted using conventional phantoms.PACS numbers: 87.52‐g, 87.57.‐s

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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