Adapted fan-beam volume reconstruction for stationary digital breast tomosynthesis

Wu, Gongting; Inscoe, Christina R.; Calliste, Jabari; Lee, Yueh Z.; Zhou, Otto; Lu, Jianping

doi:10.1117/12.2081931

Cited by 11 publications

(11 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Images were reconstructed using adapted fan-beam volume reconstruction (AFVR) 16 . Utilizing the linear source geometry used in the s-DCT system, AFVR breaks the 3D cone beam reconstruction into a series of 2D fan-beam volume reconstructions.…”

Section: Reconstruction Methodsmentioning

confidence: 99%

“…14 A stationary digital breast tomosynthesis (s-DBT) using a CNT x-ray source array has been successfully developed and installed in the University of North Carolina's Women's Hospital for clinical trials. [15][16][17] Using the x-ray source array, the stationary digital chest tomosynthesis (s-DCT) system can achieve full angular coverage in tomosynthesis imaging with no moving parts. 14,[18][19][20] Previous studies on the stability and geometry of the s-DCT system have been published.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Initial clinical evaluation of stationary digital chest tomosynthesis

Hartman¹,

Shan²,

Wu³

et al. 2016

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

Computed Tomography (CT) is the gold standard for image evaluation of lung disease, including lung cancer and cystic fibrosis. It provides detailed information of the lung anatomy and lesions, but at a relatively high cost and high dose of radiation. Chest radiography is a low dose imaging modality but it has low sensitivity. Digital chest tomosynthesis (DCT) is an imaging modality that produces 3D images by collecting x-ray projection images over a limited angle. DCT is less expensive than CT and requires about 1/10 th the dose of radiation. Commercial DCT systems acquire the projection images by mechanically scanning an x-ray tube. The movement of the tube head limits acquisition speed.We recently demonstrated the feasibility of stationary digital chest tomosynthesis (s-DCT) using a carbon nanotube (CNT) x-ray source array in benchtop phantom studies. The stationary x-ray source allows for fast image acquisition. The objective of this study is to demonstrate the feasibility of s-DCT for patient imaging. We have successfully imaged 31 patients. Preliminary evaluation by board certified radiologists suggests good depiction of thoracic anatomy and pathology.

show abstract

Section: Reconstruction Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Initial clinical evaluation of stationary digital chest tomosynthesis

Hartman¹,

Shan²,

Wu³

et al. 2016

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

“…Utilizing the linear source geometry used in s-DCT, the AFVR algorithm breaks the 3D cone-beam reconstructions into a series of 2D fan-beam volume reconstruction, which significantly improves the reconstruction speed with a superior image quality over the classical filtered backprojection algorithm 6 . 20 iterations was used for each fan-beam reconstruction.…”

Section: Image Reconstructionmentioning

confidence: 99%

“…By leveraging the unique linearly distributed source geometry in s-DCT we have also developed a fast iterative reconstruction algorithm, namely adapted fan-beam volume reconstruction (AFVR) 6 . AFVR is specially optimized for s-DCT, it offers an order of magnitude faster computation speed than other conventional reconstruction algorithm with similar or better image quality.…”

Section: Introductionmentioning

confidence: 99%

Stationary digital chest tomosynthesis for coronary artery calcium scoring

Wang

Potuzko

et al. 2016

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

The coronary artery calcium score (CACS) measures the buildup of calcium on the coronary artery wall and has been shown to be an important predictor of the risk of coronary artery diseases (CAD). Currently CACS is measured using CT, though the relatively high cost and high radiation dose has limited its adoption as a routine screening procedure. Digital Chest Tomosynthesis (DCT), a low dose and low cost alternative to CT, and has been shown to achieve 90% of sensitivity of CT in lung disease screening. However commercial DCT requires long scanning time and cannot be adapted for high resolution gated cardiac imaging, necessary for CACS. The stationary DCT system (s-DCT), developed in our lab, has the potential to significantly shorten the scanning time and enables high resolution cardiac gated imaging. Here we report the preliminary results of using s-DCT to estimate the CACS. A phantom heart model was developed and scanned by the s-DCT system and a clinical CT in a phantom model with realistic coronary calcifications. The adapted fan-beam volume reconstruction (AFVR) method, developed specifically for stationary tomosynthesis systems, is used to obtain high resolution tomosynthesis images. A trained cardiologist segmented out the calcifications and the CACS was obtained. We observed a strong correlation between the tomosynthesis derived CACS and CT CACS (r 2 = 0.88). Our results shows s-DCT imaging has the potential to estimate CACS, thus providing a possible low cost and low dose imaging protocol for screening and monitoring CAD.

show abstract

“…44 Reconstruction of the 3D data set was broken down into a series of 2D slice reconstructions. This approach was taken to increase reconstruction speed and reduce memory usage.…”

Section: Reconstructionmentioning

confidence: 99%

Stationary intraoral digital tomosynthesis using a carbon nanotube X-ray source array

Shan¹,

Tucker²,

Gaalaas³

et al. 2015

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

Objectives: Intraoral dental tomosynthesis and closely related tuned-aperture CT (TACT) are low-dose three-dimensional (3D) imaging modalities that have shown improved detection of multiple dental diseases. Clinical interest in implementing these technologies waned owing to their time-consuming nature. Recently developed carbon nanotube (CNT) X-ray sources allow rapid multi-image acquisition without mechanical motion, making tomosynthesis a clinically viable technique. The objective of this investigation was to evaluate the feasibility of and produce high-quality images from a digital tomosynthesis system employing CNT X-ray technology. Methods: A test-bed stationary intraoral tomosynthesis unit was constructed using a CNT X-ray source array and a digital intraoral sensor. The source-to-image distance was modified to make the system comparable in image resolution to current two-dimensional intraoral radiography imaging systems. Anthropomorphic phantoms containing teeth with simulated and real caries lesions were imaged using a dose comparable to D-speed film dose with a rectangular collimation. Images were reconstructed and analysed. Results: Tomosynthesis images of the phantom and teeth specimen demonstrated perceived image quality equivalent or superior to standard digital images with the added benefit of 3D information. The ability to "scroll" through slices in a buccal-lingual direction significantly improved visualization of anatomical details. In addition, the subjective visibility of dental caries was increased. Conclusions: Feasibility of the stationary intraoral tomosynthesis is demonstrated. The results show clinical promise and suitability for more robust observer and clinical studies.

show abstract

Adapted fan-beam volume reconstruction for stationary digital breast tomosynthesis

Cited by 11 publications

References 13 publications

Initial clinical evaluation of stationary digital chest tomosynthesis

Initial clinical evaluation of stationary digital chest tomosynthesis

Stationary digital chest tomosynthesis for coronary artery calcium scoring

Stationary intraoral digital tomosynthesis using a carbon nanotube X-ray source array

Contact Info

Product

Resources

About