Compressed-sensing (CS)-based digital breast tomosynthesis (DBT) reconstruction for low-dose, accurate 3D breast X-ray imaging

2014 ◽  
Vol 65 (4) ◽  
pp. 565-571 ◽  
Author(s):  
Yeonok Park ◽  
Hyosung Cho ◽  
Uikyu Je ◽  
Daeki Hong ◽  
Minsik Lee ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Low Dose ◽  
Digital Breast Tomosynthesis ◽  
Breast Tomosynthesis ◽  
X Ray ◽  
X Ray Imaging

Dental cone-beam CT reconstruction from limited-angle view data based on compressed-sensing (CS) theory for fast, low-dose X-ray imaging

2014 ◽  
Vol 64 (12) ◽  
pp. 1907-1911
Author(s):  
Uikyu Je ◽  
Hyosung Cho ◽  
Minsik Lee ◽  
Jieun Oh ◽  
Yeonok Park ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Low Dose ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Reconstruction ◽  
X Ray ◽  
X Ray Imaging ◽  
Limited Angle

Compressed-sensing (CS)-based micro-DTS reconstruction for applications of fast, low-dose x-ray imaging

2012 ◽  
Vol 61 (7) ◽  
pp. 1120-1124 ◽  
Author(s):  
J. E. Oh ◽  
H. S. Cho ◽  
D. K. Hong ◽  
M. S. Lee ◽  
Y. O. Park ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Low Dose ◽  
X Ray ◽  
X Ray Imaging

Breast tomosynthesis: Accuracy of tumor measurement compared with digital mammography and ultrasonography

2010 ◽  
Vol 51 (3) ◽  
pp. 240-247 ◽  
Author(s):  
Daniel Förnvik ◽  
Sophia Zackrisson ◽  
Otto Ljungberg ◽  
Tony Svahn ◽  
Pontus Timberg ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Digital Mammography ◽  
Tumor Size ◽  
Low Dose ◽  
Breast Cancers ◽  
Breast Tomosynthesis ◽  
X Ray ◽  
X Ray Imaging ◽  
Image Volume ◽  
Better Than

Background: Mammographic tumor size measurement can be difficult because breast structures are superimposed onto a two-dimensional (2D) plane, potentially obscuring the tumor outline. Breast tomosynthesis (BT) is a 3D X-ray imaging technique in which low-dose images are acquired over a limited angular range at a total dose comparable to digital mammography (DM). These low-dose images are used to mathematically reconstruct a 3D image volume of the breast, thus reducing the problem of superimposed tissue. Purpose: To investigate whether breast cancer size can be more accurately assessed with breast tomosynthesis than with digital mammography and ultrasonography (US), by reducing the disturbance effect of the projected anatomy. Material and Methods: A prototype BT system was used. The main inclusion criterion for BT examination was subtle but suspicious findings of breast cancer on 2D mammography. Sixty-two women with 73 breast cancers were included. BT, DM, and US sizes were measured independently by experienced radiologists without knowledge of the pathology results, which were used as reference. Results: The tumor outline could be determined in significantly more cases with BT (63) and US (60) than DM (49). BT and US size correlated well with pathology ( R=0.86 and R=0.85, respectively), and significantly better than DM size ( R=0.71). Accordingly, staging was significantly more accurate with BT than with DM. Conclusion: The study indicates that BT is superior to DM in the assessment of breast tumor size and stage.

scholarly journals Tecnica di Imaging tridimensionale (Digital Breast Tomosynthesis) per la diagnosi del tumore alla mammella

2019 ◽  
Author(s):  
Di Guida Lisa ◽  
De Rosa Salvatore
Keyword(s):  
Breast Cancer ◽  
Early Diagnosis ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Digital Breast Tomosynthesis ◽  
Recurrence Time ◽  
Digital Tomosynthesis ◽  
Breast Tomosynthesis ◽  
X Ray Imaging ◽  
Projective Image

Breast cancer affects one in eight women over a lifetime. It is the most common cancer in women and represents 29% of all cancers affecting women, with a mortality rate of 17% of all deaths due to cancer on women. Sooner the cancer is identified with an early diagnosis, higher are the possibilities to treat it completely and longer is the recurrence time. Mammography is the most common method for early diagnosis. is a two-dimensional X-ray imaging technique and this involves the overlapping of the tissues in the projective image inability to visualize cancer in the first stage. In recent years, three-dimensional imaging techniques have been introduced, including digital tomosynthesis for the diagnosis of breast cancer, this technique has the advantages to perform dozens of projections, and not just one, from various angular views around the compressed breast. The major benefits of tomosynthesis are a lower stratification of breast tissues, better visibility of tumor masses especially for small tumors, breast tomosynthesis provides the ability to visualize 3D images to obtain a more accurated evaluation of lesions allowing better differentiation between overlapping fabrics.

scholarly journals Low Dose X-Ray Sources and High Quantum Efficiency Sensors: The Next Challenge in Dental Digital Imaging?

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Arnav R. Mistry ◽  
Daniel Uzbelger Feldman ◽  
Jie Yang ◽  
Eric Ryterski
Keyword(s):  
Low Dose ◽  
Image Resolution ◽  
X Ray ◽  
Imaging Technologies ◽  
Group 4 ◽  
X Ray Imaging ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Group 1

Objective(s). The major challenge encountered to decrease the milliamperes (mA) level in X-ray imaging systems is the quantum noise phenomena. This investigation evaluated dose exposure and image resolution of a low dose X-ray imaging (LDXI) prototype comprising a low mA X-ray source and a novel microlens-based sensor relative to current imaging technologies.Study Design. A LDXI in static (group 1) and dynamic (group 2) modes was compared to medical fluoroscopy (group 3), digital intraoral radiography (group 4), and CBCT scan (group 5) using a dental phantom.Results. The Mann-Whitney test showed no statistical significance(α=0.01)in dose exposure between groups 1 and 3 and 1 and 4 and timing exposure (seconds) between groups 1 and 5 and 2 and 3. Image resolution test showed group 1 > group 4 > group 2 > group 3 > group 5.Conclusions. The LDXI proved the concept for obtaining a high definition image resolution for static and dynamic radiography at lower or similar dose exposure and smaller pixel size, respectively, when compared to current imaging technologies. Lower mA at the X-ray source and high QE at the detector level principles with microlens could be applied to current imaging technologies to considerably reduce dose exposure without compromising image resolution in the near future.

Computer-Aided Detection and Diagnosis for 3D X-Ray Based Breast Imaging

2012 ◽  
pp. 66-85
Author(s):  
Gautam S. Muralidhar ◽  
Alan C. Bovik ◽  
Mia K. Markey
Keyword(s):  
Breast Imaging ◽  
Digital Breast Tomosynthesis ◽  
Future Research ◽  
Computer Aided Detection ◽  
Breast Tomosynthesis ◽  
X Ray ◽  
Computer Aided ◽  
Recent Developments ◽  
Initial Work ◽  
Detection And Diagnosis

The last 15 years has seen the advent of a variety of powerful 3D x-ray based breast imaging modalities such as digital breast tomosynthesis, digital breast computed tomography, and stereo mammography. These modalities promise to herald a new and exciting future for early detection and diagnosis of breast cancer. In this chapter, the authors review some of the recent developments in 3D x-ray based breast imaging. They also review some of the initial work in the area of computer-aided detection and diagnosis for 3D x-ray based breast imaging. The chapter concludes by discussing future research directions in 3D computer-aided detection.

Low-dose x-ray imaging GLG: restoration by Kalman filter

1999 ◽  
Author(s):  
Reza A. Zoroofi ◽  
Shinichi Tamura ◽  
Yoshinobu Sato ◽  
Yuji Ogata ◽  
Kazuo Inamoto ◽  
...  
Keyword(s):  
Kalman Filter ◽  
Low Dose ◽  
X Ray ◽  
X Ray Imaging
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