Assessing lesion malignancy by scanning small-angle x-ray scattering of breast tissue with microcalcifications
Artikel i vetenskaplig tidskrift, 2019

Scanning small-angle x-ray scattering (SAXS) measurements were performed on 36 formalin-fixed breast tissue biopsies obtained from two patients. All samples contained microcalcifications of type II, i.e. formed by hydroxyapatite. We demonstrate the feasibility of classifying breast lesions by scanning SAXS of tissues containing microcalcifications with a resolution of 35 mu m x 30 mu m We report a characteristic Bragg peak found around q = 1.725 nm(-1) that occurs primarily for malignant lesions. Such a clear SAXS fingerprint is potentially linked to structural changes of breast tissue and corresponds to dimensions of about 3.7 nm. This material property could be used as an early indicator of malignancy development, as it is readily assessed by SAXS. If this fingerprint is combined with other known SAXS features, which also indicate the level of malignancy, such as lipid spacing and collagen periodicity, it could complement traditional pathology-based analyses. To confirm the SAXS-based classification, a histopathological workup and a gold standard histopathological diagnosis were conducted to determine the malignancy level of the lesions. Our aim is to report this SAXS fingerprint, which is clearly related to malignant breast lesions. However, any further conclusion based on our dataset is limited by the low number of patients and samples. Running a broad study to increase the number of samples and patients is of great importance and relevance for the breast-imaging community.

breast lesion diagnosis

breast micro calcifications

breast cancer

small-angle x-ray scattering

Författare

C. Arboled

Paul Scherrer Institut

Eidgenössische Technische Hochschule Zürich (ETH)

V Lutz-Buen

Paul Scherrer Institut

Z. Wang

Paul Scherrer Institut

Eidgenössische Technische Hochschule Zürich (ETH)

P. Villanueva-Perez

Deutsches Elektronen-Synchrotron (DESY)

Paul Scherrer Institut

M. Guizar-Sicairos

Paul Scherrer Institut

Marianne Liebi

Chalmers, Fysik, Kondenserade materiens fysik

Z. Varga

UniversitatsSpital Zurich

M. Stampanoni

Eidgenössische Technische Hochschule Zürich (ETH)

Paul Scherrer Institut

Physics in Medicine and Biology

0031-9155 (ISSN)

Vol. 64 15 155010

Ämneskategorier

Klinisk laboratoriemedicin

Neurologi

Radiologi och bildbehandling

DOI

10.1088/1361-6560/ab2c36

PubMed

31234149

Mer information

Senast uppdaterat

2019-09-11