Digital breast tomosynthesis: Image acquisition principles and artifacts

Sujlana, Parvinder; Mahesh, Mahadevappa; Vedantham, Srinivasan; Harvey, Susan C.; Müllen, Lisa A.; Woods, Ryan W.

doi:10.1016/j.clinimag.2018.07.013

Cited by 31 publications

(17 citation statements)

References 37 publications

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“…Modern mammographic technology allows for acquisition of exams with consistently high image quality and throughput 9,11 . However, imaging artifacts can occasionally occur, and many commonly seen artifacts in mammography and digital breast tomosynthesis have been previously described and reviewed 12,13 . These well‐documented artifacts are often related to mammographic equipment hardware and software, as well as patient‐related medical devices.…”

Section: Introductionmentioning

confidence: 99%

An unusual artifact observed on screening mammography in a patient with an LVAD

Nisbet,

Ahmadian,

Vedantham

et al. 2024

J Applied Clin Med Phys

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PurposeScreening mammography and digital breast tomosynthesis consist of high‐resolution x‐ray images to identify findings that are potentially indicative of breast cancer, enabling early detection and reduction of breast cancer mortality. Imaging artifacts can occasionally occur, sometimes due to patient‐related medical devices. Because of continuous evolution of new technologies, there is potential for novel artifacts to be encountered. In this technical note, we report an unusual artifact in the screening mammogram of a patient with an Abbott HeartMate 3 left ventricular assist device (LVAD).MethodsA 72‐year‐old patient with a HeartMate 3 LVAD presented to our breast imaging facility for a standard screening exam with digital breast tomosynthesis (Selenia Dimensions, Hologic Inc., Bedford, MA) and synthetic 2D images (C‐view, Hologic Inc., Bedford, MA).ResultsLinear artifacts oriented in the anteroposterior dimension demonstrating a spatial periodicity of ∼1.4 mm were seen on all left breast images, whereas concurrent right breast images did not demonstrate any artifacts. Repeat attempts using two identical digital breast tomosynthesis units demonstrated the same artifacts. No other exam at our imaging center that day demonstrated any such artifacts. Mammogram exams performed on this patient prior to her LVAD placement did not exhibit any similar artifacts.ConclusionFindings support the patient's LVAD as the underlying source of linear artifacts observed on left breast images, particularly given the proximity of the LVAD to the left breast. With the number of patients receiving LVAD placement on the rise, as well as increasing median survival rates status post LVAD implantation, recognition of this LVAD related artifact on mammography may be important.

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Section: Introductionmentioning

confidence: 99%

An unusual artifact observed on screening mammography in a patient with an LVAD

Nisbet,

Ahmadian,

Vedantham

et al. 2024

J Applied Clin Med Phys

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“…La información obtenida de la adquisición de la tomosíntesis reduce la superposición de estructuras, permitiendo una mejor evaluación, detección, caracterización y localización de las lesiones [7][8][9] (Fig. 1), y disminuyendo de manera importante las tasas de rellamado 4,5,8,10,11 . Como beneficio adicional, reduce la necesidad de obtener mayor número de proyecciones complementarias o estudios adicionales, lo que la hace un estudio más rentable en la práctica clínica en relación con la mastografía digital [12][13][14][15] .…”

Section: Introductionunclassified

Comparación diagnóstica entre mastografía digital y tomosíntesis mamaria

Matehuala-Montúfar¹,

González-Vergara²

2022

ARM

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Introducción: El tamizaje del cáncer de mama con mamografía convencional tiene limitaciones conocidas. La tomosíntesis es una técnica en la que se adquieren imágenes a bajas dosis de radiación y desde múltiples ángulos. La información obtenida reduce la superposición de estructuras, permitiendo una mejor evaluación, detección, caracterización y localización de las lesiones. Objetivo: Comparar la proporción diagnóstica entre mastografía digital y tomosíntesis. Método: Estudio observacional, retrospectivo, analítico y de corte transversal. Se evaluaron 430 expedientes electrónicos con imágenes de mastografía digital y tomosíntesis, se efectuó análisis de doble lectura y se comparó la visibilidad de hallazgos por ambos métodos de imagen de acuerdo con BI-RADS. Se realizó una diferencia de proporciones en la que se consideró como significativo un valor de p < 0.05. Resultados: Se encontró una diferencia estadísticamente significativa al comparar los hallazgos al analizar únicamente las imágenes obtenidas por mastografía digital en 137 casos, frente a los 400 casos con hallazgos visibles documentados en imágenes de tomosíntesis en una segunda lectura. Se obtuvo un valor Z de 1.8, con p = 0.0329. Conclusiones: Se halló un valor de proporción diagnóstica de la tomosíntesis mayor que el obtenido con la mastografía digital convencional.Palabras clave: Tomosíntesis mamaria. Mastografía digital. Mastografía de diagnóstico.

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“…The clinical potential of dedicated breast computed tomography (BCT) is being investigated by several research teams 1–17 and topical reviews have been published 18–21 . The motivation for pursuing BCT is its ability to provide fully tomographic images in comparison to partial tomographic images provided by digital breast tomosynthesis, 22,23 which results in artifacts 24,25 . Broadly, dedicated BCT designs can be classified as those using helical acquisition 15 similar to multidetector CT, or as cone‐beam breast CT (CBBCT) with planar detectors and circular scan trajectory 2,3 .…”

Section: Introductionmentioning

confidence: 99%

Radiation dosimetry of a clinical prototype dedicated cone‐beam breast CT system with offset detector

2021

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Purpose A clinical‐prototype, dedicated, cone‐beam breast computed tomography (CBBCT) system with offset detector is undergoing clinical evaluation at our institution. This study is to estimate the normalized glandular dose coefficients (DgNCT) that provide air kerma‐to‐mean glandular dose conversion factors using Monte Carlo simulations. Materials and methods The clinical prototype CBBCT system uses 49 kV x‐ray spectrum with 1.39 mm 1st half‐value layer thickness. Monte Carlo simulations (GATE, version 8) were performed with semi‐ellipsoidal, homogeneous breasts of various fibroglandular weight fractions (fg=0.01,0.15,0.5,1false), chest wall diameters (d=8,10,14,18,20 cm), and chest wall to nipple length (l=0.75d), aligned with the axis of rotation (AOR) located at 65 cm from the focal spot to determine the DgNCT. Three geometries were considered – 40×30‐cm detector with no offset that served as reference and corresponds to a clinical CBBCT system, 30×30‐cm detector with 5 cm offset, and a 30×30‐cm detector with 10 cm offset. Results For 5 cm lateral offset, the DgNCT ranged 0.177‐0.574 mGy/mGy and reduction in DgNCT with respect to reference geometry was observed only for 18 cm (6.4%±0.23%) and 20 cm (9.6%±0.22%) diameter breasts. For the 10 cm lateral offset, the DgNCT ranged 0.221‐0.581 mGy/mGy and reduction in DgNCT was observed for all breast diameters. The reduction in DgNCT was 1.4%±0.48%, 7.1%±0.13%, 17.5%±0.19%, 25.1%±0.15%, and 27.7%±0.08% for 8, 10, 14, 18, and 20 cm diameter breasts, respectively. For a given breast diameter, the reduction in DgNCT with offset‐detector geometries was not dependent on fg. Numerical fits of italicDgNitalicCTd,l,fg were generated for each geometry. Conclusion The DgNCT and the numerical fit, DgNitalicCTd,l,fg would be of benefit for current CBBCT systems using the reference geometry and for future generations using offset‐detector geometry. There exists a potential for radiation dose reduction with offset‐detector geometry, provided the same technique factors as the reference geometry are used, and the image quality is clinically acceptable.

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Digital breast tomosynthesis: Image acquisition principles and artifacts

Cited by 31 publications

References 37 publications

An unusual artifact observed on screening mammography in a patient with an LVAD

An unusual artifact observed on screening mammography in a patient with an LVAD

Comparación diagnóstica entre mastografía digital y tomosíntesis mamaria

Radiation dosimetry of a clinical prototype dedicated cone‐beam breast CT system with offset detector

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