title: Quantitative Study of Elasticity of Rabbit VX2 Liver Tumor with Alternated Cooling and Heating Treatment based on ARFI Ultrasound Imaging Technique.
abstract: Acoustic radiation force impulse (ARFI) ultrasound imaging technique is used to quantitatively evaluate the elasticity of rabbit VX2 liver tumor with alternated cooling and heating treatment (ACHT). ACHT was performed on fifteen VX2 liver tumor models established in fifteen male New Zealand white rabbits with open tumor plant. ARFI was performed on day 0, 1, 7 and 14 after ACHT and shear wave velocity (SWV) in ARFI was recorded to evaluate the elasticity of the treated area. The SWV value of the lesion on day 0, 1, 7 and 14 was 2.33 ± 0.19 m/s, 3.09 ± 0.40 m/s, 2.64 ± 0.37 m/s and 2.26 ± 0.24 m/s, respectively, indicating the treated areas get stiffer on day 1 and then get softer gradually by day. All the difference between adjacent time points was statistically significant. The SWV value of different parts on day 7 approved that the hardness of the treated area is heterogenous: the treated area in the center >the peripheral strip-shaped area >normal liver tissues, consistent with pathological changes. Meanwhile, ARFI combined with conventional US imaging can qualitatively and quantitatively exam the healing process of rabbit VX2 liver tumor after ACHT, and corresponds well to the pathological results.
authors.affiliation: Department of Ultrasound in Medicine, Shanghai Jiao tong University Affiliated Sixth People's Hospital, Shanghai, China.|Shanghai Institute of Ultrasound in Medicine, Shanghai, China.
authors.forename: Di
authors.initials: D
authors.lastname: Sun
authors.affiliation: Department of Ultrasound in Medicine, Shanghai Jiao tong University Affiliated Sixth People's Hospital, Shanghai, China.|Shanghai Institute of Ultrasound in Medicine, Shanghai, China.
authors.forename: Cong
authors.initials: C
authors.lastname: Wei
authors.affiliation: Shanghai Institute of Ultrasound in Medicine, Shanghai, China.
authors.forename: E
authors.initials: E
authors.lastname: Shen
authors.affiliation: Department of Ultrasound in Medicine, Shanghai Jiao tong University Affiliated Sixth People's Hospital, Shanghai, China.|Medical Imaging Institute of Shanghai Jiao tong University, Shanghai, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Ying
authors.affiliation: Department of Ultrasound in Medicine, Shanghai Jiao tong University Affiliated Sixth People's Hospital, Shanghai, China.|Shanghai Institute of Ultrasound in Medicine, Shanghai, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Hu
mesh_terms: D000818:Animals; D004195:Disease Models, Animal; D004548:Elasticity; D054459:Elasticity Imaging Techniques / Q000379:methods*; D006979:Hyperthermia, Induced / Q000379:methods*; D008113:Liver Neoplasms / Q000473:pathology* / Q000628:therapy*; D011817:Rabbits; D016896:Treatment Outcome