Evaluation of the image quality in digital breast tomosynthesis (DBT) employed with a compressed-sensing (CS)-based reconstruction algorithm by using the mammographic accreditation phantom

Park, Yeonok; Cho, Heemoon; Je, Uikyu; Cho, Hyosung; Park, Chulkyu; Lim, Hyunwoo; Kim, Kyuseok; Kim, Guna; Park, Soyoung; Woo, Tae Ho; Choi, Sungwon

doi:10.1016/j.nima.2015.09.042

Cited by 14 publications

(5 citation statements)

References 15 publications

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“…Studies on the tomography using a mobile X-ray system have been reported in recent years [ 2 – 4 ]. Park et al [ 2 , 3 ] performed a feasibility study for image reconstruction using a circular digital tomosynthesis method based on compressed-sensing theory. These reports mostly assumed that the X-ray source moves along a predetermined straight-line path or circular arc path around the subject during image acquisition.…”

Section: Introductionmentioning

confidence: 99%

Geometry calibration between X-ray source and detector for tomosynthesis with a portable X-ray system

et al. 2017

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PurposeTomosynthesis is attracting attention as a low-dose tomography technology compared with X-ray CT. However, conventional tomosynthesis imaging devices are large and stationary. Furthermore, there is a limitation in the working range of the X-ray source during image acquisition. We have previously proposed the use of a portable X-ray device for tomosynthesis that can be used for ward rounds and emergency medicine. The weight of this device can be reduced by using a flat panel detector (FPD), and flexibility is realized by the free placement of the X-ray source and FPD. Tomosynthesis using a portable X-ray device requires calibration of the geometry between the X-ray source and detector at each image acquisition. We propose a method for geometry calibration and demonstrate tomosynthesis image reconstruction by this method.MethodsAn image processing-based calibration method using an asymmetric and multilayered calibration object (AMCO) is presented. Since the AMCO is always attached to the X-ray source housing for geometry calibration, the additional setting of a calibration object or marker around or on the patients is not required. The AMCO’s multilayer structure improves the calibration accuracy, especially in the out-of-plane direction.ResultsTwo experiments were conducted. The first was performed to evaluate the calibration accuracy using an XY positioning stage and a gonio stage. As a result, an accuracy of approximately 1 mm was achieved both in the in-plane and out-of-plane directions. An angular accuracy of approximately was confirmed. The second experiment was conducted to evaluate the reconstructed image using a foot model phantom. Only the sagittal plane could be clearly observed with the proposed method.ConclusionWe proposed a tomosynthesis imaging system using a portable X-ray device. From the experimental results, the proposed method could provide sufficient calibration accuracy and a clear sagittal plane of the reconstructed tomosynthesis image.

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Section: Introductionmentioning

confidence: 99%

Geometry calibration between X-ray source and detector for tomosynthesis with a portable X-ray system

et al. 2017

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“…The local information, D(i,j) obtained earlier was used in applying the fuzzy concept through fuzzy membership function that determines its output value, F(i,j) based on the maximum absolute luminance difference [24]. The fuzzy membership function can be defines as F1(i,j) (5).…”

Section: Fuzzy Weighted Median Filtermentioning

confidence: 99%

“…DBT is a cutting-edge technology that produces three-dimension (3D) screening images of the breast area, providing multiple angles view [4]. 10 to 30 projection images within a limited angle range of approximately 11° to 60° are required [5]. Furthermore, compared to mammogram images, DBT images offer the advantage of reducing false positive rates by 6 to 67% due to improved visualization of overlapping breast tissue, which can lead to normal tissue appearing abnormal or suspicious on mammogram images [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

“…10 to 30 projection images within a limited angle range of approximately 11° to 60° are required [5]. Furthermore, compared to mammogram images, DBT images offer the advantage of reducing false positive rates by 6 to 67% due to improved visualization of overlapping breast tissue, which can lead to normal tissue appearing abnormal or suspicious on mammogram images [5]- [7]. As a result, previous researchers have explored various methods for developing models that can detect calcifications in DBT images.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive fuzzy weighted median filter for microcalcifications detection in digital breast tomosynthesis images

Saifudin,

Sulaiman,

Osman

et al. 2024

IJEECS

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Breast cancer is a global leading cause of female mortality. Digital breast tomosynthesis (DBT) is pivotal for early breast cancer detection, with microcalcifications serving as crucial indicators. However, the movement of the DBT machine introduces blurry artefacts, potentially impacting accurate diagnosis. This study addresses this challenge by proposing an adaptive fuzzy weighted median filter (AFWMF) to enhance DBT images and aid microcalcification diagnosis. AFWMF automatically determines optimal parameters based on input images, outperforming conventional methods with a threshold range (C) from peak to end of switching. Quantitative assessment reveals peak signal to noise ratio (PSNR), and mean absolute error (MAE) values of 96.2267 and 0.0000636, respectively, demonstrating a significant improvement in microcalcification detection. This study contributes an effective and adaptive enhancement technique for DBT images, promising better breast cancer diagnosis, particularly in microcalcification scenarios.

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“…Digital mammography (DM) has played a significant role in screening for breast cancer, as well as in the detection of breast tissue alterations. However, the limitations of two-dimensional breast imaging lead to low sensitivity in the detection of some types of cancer (particularly for invasive cancers) (Roth et al 2014), as well as high rates of false-positive diagnoses due to the overlapping effect of the mammary tissue in the images obtained (Park et al 2015). Between 15% and 30% of breast cancers are not detected by DM (Gilbert al.…”

Section: Introductionmentioning

confidence: 99%

Dosimetry in Digital Breast Tomosynthesis Evaluated by Monte Carlo Technique

Alves¹,

Belinato

Santos

et al. 2021

Health Physics

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The influence of the angular deviation of the tube during digital breast tomosynthesis (DBT) acquisition to the dose in the examined breast and in other organs and tissues is not well known. In this work, the Monte Carlo method was used with an adult female virtual anthropomorphic phantom to investigate the impact of this angular variation on the breast dose. The absorbed dose in the examined breast was normalized by the air kerma, which resulted in an absorbed dose coefficient (D T /K air ) for the breast. The absorbed dose in each organ was normalized by the glandular dose in the breast, resulting in the relative organ dose (ROD). An adult female virtual anthropomorphic phantom (FSTA_M50_H50) was incorporated into a scenario containing tomosynthesis equipment with Mo/Mo, Mo/Rh, and W/Rh target/filter combinations and tube voltages of 28 kV. The comparison between the results of the simulations considering digital mammography (DM) and DBT data showed that the D T /K air values for the examined breast obtained with the DBT parameters were up to 24 times higher than with the D T /K air obtained with DM parameters. A D T /K air of 0.97 Â 10 −1 mGy mGy −1 was obtained in a DBT exam of the right breast. Considering the other organs, the highest ROD values were observed in the thyroid (6.45 Â 10 −4 ), eyes (3.87 Â 10 −4 ), liver (1.95 Â 10 −5 ), and eye lenses (3.21 Â 10 −3 ). A variation in the absorbed dose values for the breast and other organs was observed for all projections different from 0°.

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Evaluation of the image quality in digital breast tomosynthesis (DBT) employed with a compressed-sensing (CS)-based reconstruction algorithm by using the mammographic accreditation phantom

Cited by 14 publications

References 15 publications

Geometry calibration between X-ray source and detector for tomosynthesis with a portable X-ray system

Geometry calibration between X-ray source and detector for tomosynthesis with a portable X-ray system

Adaptive fuzzy weighted median filter for microcalcifications detection in digital breast tomosynthesis images

Dosimetry in Digital Breast Tomosynthesis Evaluated by Monte Carlo Technique

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