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SU-E-I-40: Phantom Research On Monochromatic Images Taken by Dual CBCT with Multiple Energy Sets.

Publication ,  Conference
Gao, R; Wang, H; Zhang, Y; Mao, R; Ren, L; Yin, F
Published in: Med Phys
June 2015

PURPOSE: To evaluate the quality of monochromatic images at the same virtual monochromatic energy using dual cone-beam computed tomography (CBCT) with either kV/kV or MV/kV or MV/MV energy sets. METHODS: CT images of Catphan 504 phantom were acquired using four different KV and MV settings: 80kV, 140kV, 4MV, 6MV. Three sets of monochromatic images were calculated: 80kV-140kV, 140kV-4MV and 4MV-6MV. Each set of CBCT images were reconstructed from the same selected virtual monochromatic energy of 1MeV. Contrast-to-Noise Ratios (CNRs) were calculated and compared between each pair of images with different energy sets. RESULTS: Between kV/MV and MV/MV images, the CNRs are comparable for all inserts. However, differences of CNRs were observed between the kV/kV and kV/MV images. Delrin's CNR ratio between kV/kV image and kV/MV image is 1.634. LDPE's (Low-Density Polyethylene) CNR ratio between kV/kV and kV/MV images is 0.509. Polystyrene's CNR ratio between kV/kV image and kV/MV image is 2.219. CONCLUSION: Preliminary results indicated that the CNRs calculated from CBCT images reconstructed from either kV/MV projections or MV/MV projections for the same selected virtual monochromatic energy may be comparable.

Duke Scholars

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

June 2015

Volume

42

Issue

6

Start / End Page

3250

Location

United States

Related Subject Headings

  • Nuclear Medicine & Medical Imaging
  • 5105 Medical and biological physics
  • 4003 Biomedical engineering
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Gao, R., Wang, H., Zhang, Y., Mao, R., Ren, L., & Yin, F. (2015). SU-E-I-40: Phantom Research On Monochromatic Images Taken by Dual CBCT with Multiple Energy Sets. In Med Phys (Vol. 42, p. 3250). United States. https://doi.org/10.1118/1.4924037
Gao, R., H. Wang, Y. Zhang, R. Mao, L. Ren, and F. Yin. “SU-E-I-40: Phantom Research On Monochromatic Images Taken by Dual CBCT with Multiple Energy Sets.” In Med Phys, 42:3250, 2015. https://doi.org/10.1118/1.4924037.
Gao R, Wang H, Zhang Y, Mao R, Ren L, Yin F. SU-E-I-40: Phantom Research On Monochromatic Images Taken by Dual CBCT with Multiple Energy Sets. In: Med Phys. 2015. p. 3250.
Gao, R., et al. “SU-E-I-40: Phantom Research On Monochromatic Images Taken by Dual CBCT with Multiple Energy Sets.Med Phys, vol. 42, no. 6, 2015, p. 3250. Pubmed, doi:10.1118/1.4924037.
Gao R, Wang H, Zhang Y, Mao R, Ren L, Yin F. SU-E-I-40: Phantom Research On Monochromatic Images Taken by Dual CBCT with Multiple Energy Sets. Med Phys. 2015. p. 3250.

Published In

Med Phys

DOI

ISSN

0094-2405

Publication Date

June 2015

Volume

42

Issue

6

Start / End Page

3250

Location

United States

Related Subject Headings

  • Nuclear Medicine & Medical Imaging
  • 5105 Medical and biological physics
  • 4003 Biomedical engineering
  • 1112 Oncology and Carcinogenesis
  • 0903 Biomedical Engineering
  • 0299 Other Physical Sciences