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Detection of Colorectal Hepatic Metastases Is Superior at Standard Radiation Dose CT versus Reduced Dose CT.

Publication ,  Journal Article
Jensen, CT; Wagner-Bartak, NA; Vu, LN; Liu, X; Raval, B; Martinez, D; Wei, W; Cheng, Y; Samei, E; Gupta, S
Published in: Radiology
February 2019

Purpose To evaluate colorectal cancer hepatic metastasis detection and characterization between reduced radiation dose (RD) and standard dose (SD) contrast material-enhanced CT of the abdomen and to qualitatively compare between filtered back projection (FBP) and iterative reconstruction algorithms. Materials and Methods In this prospective study (from May 2017 through November 2017), 52 adults with biopsy-proven colorectal cancer and suspected hepatic metastases at baseline CT underwent two portal venous phase CT scans: SD and RD in the same breath hold. Three radiologists, blinded to examination details, performed detection and characterization of 2-15-mm lesions on the SD FBP and RD adaptive statistical iterative reconstruction (ASIR)-V 60% series images. Readers assessed overall image quality and lesions between SD FBP and seven different iterative reconstructions. Two nonblinded consensus reviewers established the reference standard using the picture archiving and communication system lesion marks of each reader, multiple comparison examinations, and clinical data. Results RD CT resulted in a mean dose reduction of 54% compared with SD. Of the 260 lesions (233 metastatic, 27 benign), 212 (82%; 95% confidence interval [CI]: 76%, 86%) were detected with RD CT, whereas 252 (97%; 95% CI: 94%, 99%) were detected with SD (P < .001); per-lesion sensitivity was 79% (95% CI: 74%, 84%) and 94% (95% CI: 90%, 96%) (P < .001), respectively. Mean qualitative scores ranked SD images as higher quality than RD series images, and ASIR-V ranked higher than ASIR and Veo 3.0. Conclusion CT evaluation of colorectal liver metastases is compromised with modest radiation dose reduction, and the use of iterative reconstructions could not maintain observer performance. © RSNA, 2018.

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Published In

Radiology

DOI

EISSN

1527-1315

Publication Date

February 2019

Volume

290

Issue

2

Start / End Page

400 / 409

Location

United States

Related Subject Headings

  • Young Adult
  • Tomography, X-Ray Computed
  • Radiation Dosage
  • Prospective Studies
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Liver Neoplasms
  • Liver
  • Humans
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Jensen, C. T., Wagner-Bartak, N. A., Vu, L. N., Liu, X., Raval, B., Martinez, D., … Gupta, S. (2019). Detection of Colorectal Hepatic Metastases Is Superior at Standard Radiation Dose CT versus Reduced Dose CT. Radiology, 290(2), 400–409. https://doi.org/10.1148/radiol.2018181657
Jensen, Corey T., Nicolaus A. Wagner-Bartak, Lan N. Vu, Xinming Liu, Bharat Raval, David Martinez, Wei Wei, Yuan Cheng, Ehsan Samei, and Shiva Gupta. “Detection of Colorectal Hepatic Metastases Is Superior at Standard Radiation Dose CT versus Reduced Dose CT.Radiology 290, no. 2 (February 2019): 400–409. https://doi.org/10.1148/radiol.2018181657.
Jensen CT, Wagner-Bartak NA, Vu LN, Liu X, Raval B, Martinez D, et al. Detection of Colorectal Hepatic Metastases Is Superior at Standard Radiation Dose CT versus Reduced Dose CT. Radiology. 2019 Feb;290(2):400–9.
Jensen, Corey T., et al. “Detection of Colorectal Hepatic Metastases Is Superior at Standard Radiation Dose CT versus Reduced Dose CT.Radiology, vol. 290, no. 2, Feb. 2019, pp. 400–09. Pubmed, doi:10.1148/radiol.2018181657.
Jensen CT, Wagner-Bartak NA, Vu LN, Liu X, Raval B, Martinez D, Wei W, Cheng Y, Samei E, Gupta S. Detection of Colorectal Hepatic Metastases Is Superior at Standard Radiation Dose CT versus Reduced Dose CT. Radiology. 2019 Feb;290(2):400–409.

Published In

Radiology

DOI

EISSN

1527-1315

Publication Date

February 2019

Volume

290

Issue

2

Start / End Page

400 / 409

Location

United States

Related Subject Headings

  • Young Adult
  • Tomography, X-Ray Computed
  • Radiation Dosage
  • Prospective Studies
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Liver Neoplasms
  • Liver
  • Humans