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Evaluation of graft stiffness using acoustic radiation force impulse imaging after living donor liver transplantation
Author(s) -
Ijichi Hideki,
Shirabe Ken,
Matsumoto Yoshihiro,
Yoshizumi Tomoharu,
Ikegami Toru,
Kayashima Hiroto,
Morita Kazutoyo,
Toshima Takeo,
Mano Yohei,
Maehara Yoshihiko
Publication year - 2014
Publication title -
clinical transplantation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.918
H-Index - 76
eISSN - 1399-0012
pISSN - 0902-0063
DOI - 10.1111/ctr.12457
Subject(s) - medicine , liver transplantation , ultrasound , transplantation , ascites , cirrhosis , radiology , living donor liver transplantation , vein , surgery , nuclear medicine , urology
Acoustic radiation force impulse ( ARFI ) imaging is an ultrasound‐based modality to evaluate tissue stiffness using short‐duration acoustic pulses in the region of interest. Virtual touch tissue quantification ( VTTQ ), which is an implementation of ARFI , allows quantitative assessment of tissue stiffness. Twenty recipients who underwent living donor liver transplantation ( LDLT ) for chronic liver diseases were enrolled. Graft types included left lobes with the middle hepatic vein and caudate lobes (n = 11), right lobes (n = 7), and right posterior segments (n = 2). They underwent measurement of graft VTTQ during the early post‐ LDLT period. The VTTQ value level rose after LDLT , reaching a maximum level on postoperative day 4. There were no significant differences in the VTTQ values between the left and right lobe graft types. Significant correlations were observed between the postoperative maximum value of VTTQ and graft volume‐to‐recipient standard liver volume ratio, portal venous flow to graft volume ratio, and post‐ LDLT portal venous pressure. The postoperative maximum serum alanine aminotransferase level and ascites fluid production were also significantly correlated with VTTQ . ARFI may be a useful diagnostic tool for the noninvasive and quantitative evaluation of the severity of graft dysfunction after LDLT .