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Comparison of multidetector computed tomography angiography and cholangiography performed at 80 and 120 kVp in live liver donors.
J Comput Assist Tomogr. 2013 May-Jun; 37(3):443-9.JC

Abstract

OBJECTIVE

The objective of this study was to compare the radiation exposure and image quality of contrast-enhanced multidetector computed tomography angiography (CTA) and computed tomography cholangiography (CTC) performed for living liver donor evaluation using 80 and 120 kVp.

METHODS

Ninety-three potential liver donors who underwent preoperative contrast-enhanced 64 multidetector CTA and CTC were retrospectively divided into 2 groups: at 80 and at 120 kVp. An institutional review board waiver was obtained. Signal-to-noise ratio and contrast-to-noise ratio of the hepatic artery and common bile duct were obtained. The dose-length product was recorded. Image quality and visibility of hepatic artery and biliary tract anatomy were evaluated. Mann-Whitney U test was used for statistical evaluation.

RESULTS

Mean hepatic artery/common bile duct signal-to-noise ratio was 28.9/28.6 (SD, 14.2/10.0) at 80 kVp and 27.6/25.8 (SD, 8.0/6.2) at 120 kVp (P = 0.61/0.099). Mean hepatic artery/common bile duct contrast-to-noise ratio was 24.8/23.3 (SD, 12.9/8.6) at 80 kVp and 22.2/19.3 (SD, 7.7/5.0) at 120 kVp (P = 0.76/0.005). Mean CTA/CTC dose-length product was 279/281 (SD, 42/52) mGy-cm at 80 kVp and 407/451 (SD, 208/243) mGy-cm at 120 kVp (P = 0.026/0.002). Computed tomography cholangiography image quality and visibility of biliary tract anatomy were not significantly different at 80 versus 120 kVp (all P > 0.13). Computed tomography angiography image quality was significantly lower (P < 0.01), and the noise scores significantly higher (P < 0.01) at 80 versus 120 kVp, but diagnostic.

CONCLUSIONS

Contrast-enhanced CTA and CTC performed at 80 kVp result in comparable image quality and anatomical evaluation with reduced radiation exposure when compared with 120 kVp.

Authors+Show Affiliations

Yale Diagnostic Radiology, Yale School of Medicine, New Haven, CT 06510, USA. steffen.huber@yale.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

23674019

Citation

Huber, Steffen, et al. "Comparison of Multidetector Computed Tomography Angiography and Cholangiography Performed at 80 and 120 kVp in Live Liver Donors." Journal of Computer Assisted Tomography, vol. 37, no. 3, 2013, pp. 443-9.
Huber S, Cornfeld D, Emre SH, et al. Comparison of multidetector computed tomography angiography and cholangiography performed at 80 and 120 kVp in live liver donors. J Comput Assist Tomogr. 2013;37(3):443-9.
Huber, S., Cornfeld, D., Emre, S. H., & Israel, G. M. (2013). Comparison of multidetector computed tomography angiography and cholangiography performed at 80 and 120 kVp in live liver donors. Journal of Computer Assisted Tomography, 37(3), 443-9. https://doi.org/10.1097/RCT.0b013e318283bb5c
Huber S, et al. Comparison of Multidetector Computed Tomography Angiography and Cholangiography Performed at 80 and 120 kVp in Live Liver Donors. J Comput Assist Tomogr. 2013 May-Jun;37(3):443-9. PubMed PMID: 23674019.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of multidetector computed tomography angiography and cholangiography performed at 80 and 120 kVp in live liver donors. AU - Huber,Steffen, AU - Cornfeld,Daniel, AU - Emre,Sukru H, AU - Israel,Gary M, PY - 2013/5/16/entrez PY - 2013/5/16/pubmed PY - 2013/8/2/medline SP - 443 EP - 9 JF - Journal of computer assisted tomography JO - J Comput Assist Tomogr VL - 37 IS - 3 N2 - OBJECTIVE: The objective of this study was to compare the radiation exposure and image quality of contrast-enhanced multidetector computed tomography angiography (CTA) and computed tomography cholangiography (CTC) performed for living liver donor evaluation using 80 and 120 kVp. METHODS: Ninety-three potential liver donors who underwent preoperative contrast-enhanced 64 multidetector CTA and CTC were retrospectively divided into 2 groups: at 80 and at 120 kVp. An institutional review board waiver was obtained. Signal-to-noise ratio and contrast-to-noise ratio of the hepatic artery and common bile duct were obtained. The dose-length product was recorded. Image quality and visibility of hepatic artery and biliary tract anatomy were evaluated. Mann-Whitney U test was used for statistical evaluation. RESULTS: Mean hepatic artery/common bile duct signal-to-noise ratio was 28.9/28.6 (SD, 14.2/10.0) at 80 kVp and 27.6/25.8 (SD, 8.0/6.2) at 120 kVp (P = 0.61/0.099). Mean hepatic artery/common bile duct contrast-to-noise ratio was 24.8/23.3 (SD, 12.9/8.6) at 80 kVp and 22.2/19.3 (SD, 7.7/5.0) at 120 kVp (P = 0.76/0.005). Mean CTA/CTC dose-length product was 279/281 (SD, 42/52) mGy-cm at 80 kVp and 407/451 (SD, 208/243) mGy-cm at 120 kVp (P = 0.026/0.002). Computed tomography cholangiography image quality and visibility of biliary tract anatomy were not significantly different at 80 versus 120 kVp (all P > 0.13). Computed tomography angiography image quality was significantly lower (P < 0.01), and the noise scores significantly higher (P < 0.01) at 80 versus 120 kVp, but diagnostic. CONCLUSIONS: Contrast-enhanced CTA and CTC performed at 80 kVp result in comparable image quality and anatomical evaluation with reduced radiation exposure when compared with 120 kVp. SN - 1532-3145 UR - https://www.unboundmedicine.com/medline/citation/23674019/Comparison_of_multidetector_computed_tomography_angiography_and_cholangiography_performed_at_80_and_120_kVp_in_live_liver_donors_ L2 - https://doi.org/10.1097/RCT.0b013e318283bb5c DB - PRIME DP - Unbound Medicine ER -