Histologic analysis of rabbit liver cancer treated by bulk ultrasound ablation

Chandra Priya Karunakaran, Steven M. Rudich, Amel Alqadah, Mark T. Burgess, Daria A. Narmoneva, T. Douglas Mast

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

VX2 rabbit liver cancer, treated in vivo using bulk ultrasound ablation by miniaturized image-ablate arrays, was histologically analyzed using TTC vital stain and DAPI nucleic acid stain. VX2 cells were implanted into rabbit liver lobes and allowed to grow for 11-21 days. Liver lobes containing solid VX2 tumors were then treated with 4.8 MHz, 22.5-38.5 W/cm2 in situ intensity, unfocused ultrasound for exposure times of 20-120 s. After animal sacrifice, thermal lesions were bisected along the imaging/treatment plane, one face stained with TTC, and the other with DAPI. Levels of TTC uptake (no uptake, partial uptake, and complete uptake) in liver parenchyma corresponded to three discrete regions of tan, pink and red color. By processing images of DAPI-stained parenchymal tissue from these three regions, cellular damage was quantified. A viability index parameter incorporating the size and shape of DAPI-stained nuclei correlated significantly with levels of TTC uptake, and thus with local tissue viability. For ablation of normal liver, viability indices for parenchymal regions of no TTC uptake and partial TTC uptake were significantly different from those for viable tissue. For ablation of VX2 tumor, differences in viability index between regions of no TTC uptake and complete TTC uptake were smaller, but significant overall.

Original languageEnglish (US)
Title of host publication11th International Symposium on Therapeutic Ultrasound
Pages162-168
Number of pages7
DOIs
StatePublished - Dec 1 2012
Externally publishedYes
Event11th International Symposium on Therapeutic Ultrasound, ISTU 2011 - New York, NY, United States
Duration: Apr 11 2011Apr 13 2011

Publication series

NameAIP Conference Proceedings
Volume1481
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference11th International Symposium on Therapeutic Ultrasound, ISTU 2011
CountryUnited States
CityNew York, NY
Period4/11/114/13/11

Keywords

  • DAPI
  • TTC
  • Ultrasound bulk ablation
  • VX2 tumor

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Karunakaran, C. P., Rudich, S. M., Alqadah, A., Burgess, M. T., Narmoneva, D. A., & Mast, T. D. (2012). Histologic analysis of rabbit liver cancer treated by bulk ultrasound ablation. In 11th International Symposium on Therapeutic Ultrasound (pp. 162-168). (AIP Conference Proceedings; Vol. 1481). https://doi.org/10.1063/1.4757328