Novel tissue harmonic imaging clearly visualizes a case of intraductal papillary mucinous neoplasm with mural nodules

JOP. 2014 May 27;15(3):274-5. doi: 10.6092/1590-8577/2385.

Abstract

Tissue Harmonic Echo (THE) imaging is a sonographic technique that potentially provides images of higher quality than can conventional B-mode images. Potential advantages of THE imaging include improved resolution, improved signal-to-noise ratio, and reduced artifacts [1, 2]. Recently, a novel THE imaging performed using an EUS system with a monitor/processing unit (EU-ME2 PREMIER PLUS; Olympus Medical Systems, Tokyo, Japan) has been developed. Using this technology, we can obtain two THE mode images, namely, THE-P (penetration) and THE-R (resolution). The THE-P mode is suitable for middle range distance observation because it receives a harmonic signal whose frequency is mainly 7.5 MHz. The THE-R mode is suitable for close distance observation from the probe because it receives a harmonic signal whose frequency mainly ranges from 10 to 12 MHz. Here, we report a case of intraductal papillary mucinous neoplasm (IPMN) with mural nodules which could be clearly detected using this novel THE imaging.

Publication types

  • Case Reports
  • Video-Audio Media

MeSH terms

  • Adenocarcinoma, Mucinous / diagnostic imaging*
  • Aged
  • Carcinoma, Pancreatic Ductal / diagnostic imaging*
  • Carcinoma, Papillary / diagnostic imaging*
  • Endosonography / methods*
  • Female
  • Humans
  • Pancreatic Neoplasms / diagnostic imaging*