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Percutaneous cryoablation of renal masses under CT fluoroscopy: radiation doses to the patient and interventionalist.

Publication ,  Journal Article
Stewart, JK; Looney, CB; Anderson-Evans, CD; Toncheva, GI; Sopko, DR; Kim, CY; Yoshizumi, TT; Nelson, RC
Published in: Abdom Imaging
October 2015

PURPOSE: Computed tomographic (CT) fluoroscopy-guided percutaneous cryoablation is an effective therapeutic method used to treat focal renal masses. The purpose of this study is to quantify the radiation dose to the patient and interventional radiologist during percutaneous cryoablation of renal masses using CT fluoroscopic guidance. METHODS: Over a 1-year period, the CT fluoroscopy time during percutaneous cryoablation of renal masses was recorded in 41 patients. The level of complexity of each procedure was designated as simple, intermediate, or complex. Patient organ radiation doses were estimated using an anthropomorphic model. Dose to the interventional radiologist was estimated using ion chamber survey meters. RESULTS: The average CT fluoroscopy time for technically simple cases was 47 s, 126 s for intermediate cases, and 264 s for complex cases. The relative risk of hematologic stomach and liver malignancy in patients undergoing this procedure was 1.003-1.074. The lifetime attributable risk of cancer ranged from 2 to 58, with the highest risk in younger patients for developing leukemia. The estimated radiation dose to the interventionalist without lead shielding was 390 mR (3.9 mGy) per year of cases. CONCLUSIONS: The radiation risk to the patient during CT fluoroscopy-guided percutaneous renal mass cryoablation is, as expected, related to procedure complexity. Quantification of patient organ radiation dose was estimated using an anthropomorphic model. This information, along with the associated relative risk of malignancy, may assist in evaluating risks of the procedure, particularly in younger patients. The radiation dose to the interventionist is low regardless of procedure complexity, but highlights the importance of lead shielding.

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Published In

Abdom Imaging

DOI

EISSN

1432-0509

Publication Date

October 2015

Volume

40

Issue

7

Start / End Page

2606 / 2612

Location

United States

Related Subject Headings

  • Young Adult
  • Tomography, X-Ray Computed
  • Risk
  • Radiography, Interventional
  • Radiation Dosage
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Kidney Neoplasms
  • Kidney
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Stewart, J. K., Looney, C. B., Anderson-Evans, C. D., Toncheva, G. I., Sopko, D. R., Kim, C. Y., … Nelson, R. C. (2015). Percutaneous cryoablation of renal masses under CT fluoroscopy: radiation doses to the patient and interventionalist. Abdom Imaging, 40(7), 2606–2612. https://doi.org/10.1007/s00261-015-0456-2
Stewart, Jessica K., Christopher B. Looney, Colin D. Anderson-Evans, Greta I. Toncheva, David R. Sopko, Charles Y. Kim, Terry T. Yoshizumi, and Rendon C. Nelson. “Percutaneous cryoablation of renal masses under CT fluoroscopy: radiation doses to the patient and interventionalist.Abdom Imaging 40, no. 7 (October 2015): 2606–12. https://doi.org/10.1007/s00261-015-0456-2.
Stewart JK, Looney CB, Anderson-Evans CD, Toncheva GI, Sopko DR, Kim CY, et al. Percutaneous cryoablation of renal masses under CT fluoroscopy: radiation doses to the patient and interventionalist. Abdom Imaging. 2015 Oct;40(7):2606–12.
Stewart, Jessica K., et al. “Percutaneous cryoablation of renal masses under CT fluoroscopy: radiation doses to the patient and interventionalist.Abdom Imaging, vol. 40, no. 7, Oct. 2015, pp. 2606–12. Pubmed, doi:10.1007/s00261-015-0456-2.
Stewart JK, Looney CB, Anderson-Evans CD, Toncheva GI, Sopko DR, Kim CY, Yoshizumi TT, Nelson RC. Percutaneous cryoablation of renal masses under CT fluoroscopy: radiation doses to the patient and interventionalist. Abdom Imaging. 2015 Oct;40(7):2606–2612.

Published In

Abdom Imaging

DOI

EISSN

1432-0509

Publication Date

October 2015

Volume

40

Issue

7

Start / End Page

2606 / 2612

Location

United States

Related Subject Headings

  • Young Adult
  • Tomography, X-Ray Computed
  • Risk
  • Radiography, Interventional
  • Radiation Dosage
  • Nuclear Medicine & Medical Imaging
  • Middle Aged
  • Male
  • Kidney Neoplasms
  • Kidney