Triple-energy contrast enhanced digital mammography

Puong, Sylvie; Carvalho, Pablo Milioni de; Muller, Serge

doi:10.1117/12.843776

Cited by 4 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The estimated thicknesses were about 5.11, 5.96, and 6.78 cm in the background region and about 4.25, 5. 15,6.02 cm in the iodine insert region for 5-, 6-, and 7-cm breast phantoms, respectively. The difference between thicknesses in the background region and thicknesses in the iodine insert region, which was about 0.8 cm, was caused by iodine inserts.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A Quantification Method for Breast Tissue Thickness and Iodine Concentration Using Photon-Counting Detector

Han

2015

J Digit Imaging

View full text Add to dashboard Cite

The purpose of contrast-enhanced digital mammography (CEDM) is to facilitate detection and characterization of the lesions in the breast using intravenous injection of an iodinated contrast agent. CEDM produces iodine images with gray levels proportional to iodine concentration at each pixel, which can be considered as quantification of iodine. While dual-energy CEDM requires an accurate knowledge of the thickness of compressed breast for the quantification, it is known that the accuracy of the built-in thickness measurement is not satisfactory. Triple-energy CEDM, which can provide a third image, can alleviate the limitation of dual-energy CEDM. If triple exposure technique is applied, it can lead to increased risk of motion artifact. An energy-resolving photoncounting detector (PCD) that can acquire multispectral X-ray images can reduce the risk of motion artifact. In this research, an easily implementable method for iodine quantification in breast imaging was suggested, and it was applied to the images of breast phantom with various iodine concentrations. The iodine concentrations in breast phantom simulate lesions filled with different iodine concentrations in the breast. The result shows that the proposed method can quantify the iodine concentrations in breast phantom accurately.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Triple-energy CEDM, which provides a third image, has been considered to overcome the necessity of thickness information. Triple-energy approaches have been suggested for CT, fluoroscopy, and mammography [10][11][12][13][14][15]. To apply tripleenergy method to mammography, three images for three energy bins should be acquired.…”

Section: Introductionmentioning

confidence: 99%

A Quantification Method for Breast Tissue Thickness and Iodine Concentration Using Photon-Counting Detector

Han

2015

J Digit Imaging

View full text Add to dashboard Cite

show abstract

A new calibration method and tissue cancellation in dual energy mammography

Han

Kang

Kim

et al. 2010

IEEE Nuclear Science Symposuim &Amp; Medical Imaging Conference

View full text Add to dashboard Cite

Mammography is stil the major tool for screening and diagnostic examinations of early breast cancer detection. It gives opportunities for early detection of breast cancer. For early detection of breast cancer, the mass visuality of mammography is very important. Direct mapping is suggested through which the breast radiography relates to the reference phantom radiography by finding the closest intensity values between those radiography images at both energy. With the proposed method, we could enhance the visuality of mass lesions in breast. And the results show that the proposed method has good performance, showing the possibility of cancer detection mammography.

show abstract

Comparison of material decomposition methods in contrast enhancement digital mammography based on photon counting

Choi

Kim

Cho

et al. 2011

2011 IEEE Nuclear Science Symposium Conference Record

View full text Add to dashboard Cite

Photon counting detector with energy discrimination has made it possible to decompose materials. In this study, we compared two material decomposition methods in CEDM using a Monte Carlo simulation. The K-edge and dual energy imaging methods were used for material decomposition. We designed the cadmium telluride (CdTe) detector based on photon counting using GEANT4 Application for Tomographic Emission (GATE) version 6.0 simulation tools. The CdTe detector was 44.8X44.8 mm 2 and thickness of 1 mm. To verify the material decomposition ability, we designed the phantom with GATE. The phantom was a cylinder of breast equivalent tissue material (ICRV-44) containing iodine inserts at various thicknesses ranging from 0.3 to 1.5 mm. Thicknesses of breast equivalent tissue material was 20, 30, 40, and 50 mm. First, to verify the material decomposition ability of K-edge imaging, we obtained image from 34-44 keY energy window because the K-edge energy of iodine is 33.2 keY. Second, for the dual energy imaging methods, we acquired two images with below and above the iodine K-edge energy using one exposure with energy selective windows. Data for material decomposition algorithm were obtained for various combinations step wedge phantom of breast tissue equivalent materials and iodine. The images from the phantom were used to produce the inverse mapping functions.The ability of material decomposition was investigated in terms of a contrast-to-noise ratio (CNR). According to the results, the CNR with K-edge imaging method was higher than dual energy method. The calculated values of CNR with K-edge imaging method were approximately 1.60 times higher than with dual energy imaging method. Our studies may be used as a basis for future studies on X-ray imaging based on photon counting.

show abstract

Triple-energy contrast enhanced digital mammography

Cited by 4 publications

References 21 publications

A Quantification Method for Breast Tissue Thickness and Iodine Concentration Using Photon-Counting Detector

A Quantification Method for Breast Tissue Thickness and Iodine Concentration Using Photon-Counting Detector

A new calibration method and tissue cancellation in dual energy mammography

Comparison of material decomposition methods in contrast enhancement digital mammography based on photon counting

Contact Info

Product

Resources

About