Effects of surrounding conditions on boundary and internal echoes of simulated mass lesions

A phantom study

Kazunori Yoshiura, Kunihiro Miwa, Eiichiro Ariji, Shigeo Ban, Shigenobu Kanda

Research output: Contribution to journalArticle

Abstract

Ultrasonography has been widely used in the maxillofacial region because of the ability to demonstrate pathological conditions in real time without radiation exposure. However, echo patterns of mass lesions vary with the surrounding tissue conditions. To examine the effects of the various surrounding conditions on depiction of such lesions on echograms, we constructed a model, an echo phantom consisting of an agar object, with or without scattering (methylcellulose) or absorptive (barium sulfate) material, and a corresponding surrounding medium. The object's boundary clarity decreased with increasing concentration of either the surrounding scattering or absorptive media, whereas the internal echo intensity of the object also decreased only with increasing concentration of the surrounding absorptive medium. The object with absorptive material produced peripheral echoes at the border. These results suggest that care should be taken when boundary echoes are evaluated as echo signs of lesions.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalOral Radiology
Volume10
Issue number1
DOIs
Publication statusPublished - Jun 1 1994

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Barium Sulfate
Methylcellulose
Agar
Ultrasonography
Radiation Exposure

All Science Journal Classification (ASJC) codes

  • Dentistry (miscellaneous)
  • Radiology Nuclear Medicine and imaging

Cite this

Effects of surrounding conditions on boundary and internal echoes of simulated mass lesions : A phantom study. / Yoshiura, Kazunori; Miwa, Kunihiro; Ariji, Eiichiro; Ban, Shigeo; Kanda, Shigenobu.

In: Oral Radiology, Vol. 10, No. 1, 01.06.1994, p. 1-9.

Research output: Contribution to journalArticle

Yoshiura, Kazunori ; Miwa, Kunihiro ; Ariji, Eiichiro ; Ban, Shigeo ; Kanda, Shigenobu. / Effects of surrounding conditions on boundary and internal echoes of simulated mass lesions : A phantom study. In: Oral Radiology. 1994 ; Vol. 10, No. 1. pp. 1-9.
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