The Propagation Display Method Improves the Reproducibility of Pancreatic Shear Wave Elastography

Kiyotaka Hashizume, Yoshiki Hirooka, Hiroki Kawashima, Eizaburo Ohno, Takuya Ishikawa, Manabu Kawai, Hiroki Suhara, Tomoaki Takeyama, Toshinari Koya, Hiroyuki Tanaka, Daisuke Sakai, Takeshi Yamamura, Kazuhiro Furukawa, Kohei Funasaka, Masanao Nakamura, Ryoji Miyahara, Osamu Watanabe, Masatoshi Ishigami, Takamichi Kuwahara, Senju HashimotoHidemi Goto

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Evaluation of the pancreatic elastic modulus (PEM) using shear wave elastography (SWE) requires at least 5 measurements to ensure reproducibility. The aim of this study was to evaluate improvement in reproducibility of SWE, using the propagation display method in normal pancreas ([NP] phase 1) and to examine the differences in PEM between NP and chronic pancreatitis (CP), intraductal papillary mucinous neoplasm (IPMN) and autoimmune pancreatitis ([AIP] phase 2). In phase 1, the measurement success rate, median PEM in repeated measurements and appropriate number of SWE measurements were determined in 109 cases with NP. In phase 2, PEM was measured in CP (n = 10), IPMN (n = 31) and AIP (n = 5), using the required number of SWE measurements determined in phase 1. In phase 1, the measurement success rate was 93.9% (92/109 cases). The median PEM for NP was 14.6 kPa and the appropriate number of SWE measurements was at least 3. In phase 2, the median PEMs in CP, IPMN and AIP were 19.6, 18.1 and 17.2 kPa, respectively, with significant differences between NP and CP (p = 0.0133) and between NP and IPMN (p = 0.0436). Use of the propagation display method in SWE improves the reproducibility of measurement of PEM.

Original languageEnglish
Pages (from-to)2242-2247
Number of pages6
JournalUltrasound in Medicine and Biology
Volume45
Issue number8
DOIs
Publication statusPublished - 08-2019

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Radiological and Ultrasound Technology
  • Acoustics and Ultrasonics

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  • Cite this

    Hashizume, K., Hirooka, Y., Kawashima, H., Ohno, E., Ishikawa, T., Kawai, M., Suhara, H., Takeyama, T., Koya, T., Tanaka, H., Sakai, D., Yamamura, T., Furukawa, K., Funasaka, K., Nakamura, M., Miyahara, R., Watanabe, O., Ishigami, M., Kuwahara, T., ... Goto, H. (2019). The Propagation Display Method Improves the Reproducibility of Pancreatic Shear Wave Elastography. Ultrasound in Medicine and Biology, 45(8), 2242-2247. https://doi.org/10.1016/j.ultrasmedbio.2019.04.003