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Quantitative background parenchymal uptake on molecular breast imaging and breast cancer risk: a case-control study.


ABSTRACT: BACKGROUND:Background parenchymal uptake (BPU), which refers to the level of Tc-99m sestamibi uptake within normal fibroglandular tissue on molecular breast imaging (MBI), has been identified as a breast cancer risk factor, independent of mammographic density. Prior analyses have used subjective categories to describe BPU. We evaluate a new quantitative method for assessing BPU by testing its reproducibility, comparing quantitative results with previously established subjective BPU categories, and determining the association of quantitative BPU with breast cancer risk. METHODS:Two nonradiologist operators independently performed region-of-interest analysis on MBI images viewed in conjunction with corresponding digital mammograms. Quantitative BPU was defined as a unitless ratio of the average pixel intensity (counts/pixel) within the fibroglandular tissue versus the average pixel intensity in fat. Operator agreement and the correlation of quantitative BPU measures with subjective BPU categories assessed by expert radiologists were determined. Percent density on mammograms was estimated using Cumulus. The association of quantitative BPU with breast cancer (per one unit BPU) was examined within an established case-control study of 62 incident breast cancer cases and 177 matched controls. RESULTS:Quantitative BPU ranged from 0.4 to 3.2 across all subjects and was on average higher in cases compared to controls (1.4 versus 1.2, p?

SUBMITTER: Hruska CB 

PROVIDER: S-EPMC5989426 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Quantitative background parenchymal uptake on molecular breast imaging and breast cancer risk: a case-control study.

Hruska Carrie B CB   Geske Jennifer R JR   Swanson Tiffinee N TN   Mammel Alyssa N AN   Lake David S DS   Manduca Armando A   Conners Amy Lynn AL   Whaley Dana H DH   Scott Christopher G CG   Carter Rickey E RE   Rhodes Deborah J DJ   O'Connor Michael K MK   Vachon Celine M CM  

Breast cancer research : BCR 20180605 1


<h4>Background</h4>Background parenchymal uptake (BPU), which refers to the level of Tc-99m sestamibi uptake within normal fibroglandular tissue on molecular breast imaging (MBI), has been identified as a breast cancer risk factor, independent of mammographic density. Prior analyses have used subjective categories to describe BPU. We evaluate a new quantitative method for assessing BPU by testing its reproducibility, comparing quantitative results with previously established subjective BPU categ  ...[more]

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