title: High frequency ultrasound imaging of surface and subsurface structures of fingerprints.
abstract: High frequency ultrasound is suitable for non-invasive evaluation of skin because it can obtain both morphological and biomechanical information. A specially developed acoustic microscope system with the central frequency of 100 MHz was developed. The system was capable of (1) conventional C-mode acoustic microscope imaging of thinly sliced tissue, (2) ultrasound impedance imaging of the surface of in vivo thick tissue and (3) 3D ultrasound imaging of inside of the in vivo tissue. In the present study, ultrasound impedance imaging and 3D ultrasound imaging of in vivo fingerprints were obtained. The impedance image showed pores of the sweat glands in the surface of fingerprint and 3D ultrasound imaging showed glands of the rear surface of fingerprint. Both findings were not visualized by normal optical imaging, thus the system can be applied to pathological diagnosis of skin lesions and assessment of aging of the skin in cosmetic point of view.
authors.affiliation: Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan.
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Saijo
authors.forename: Kazuto
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Nagaya
authors.initials: N
authors.lastname: Okada
authors.forename: Naohiro
authors.initials: N
authors.lastname: Hozumi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Hagiwara
authors.forename: Akira
authors.initials: A
authors.lastname: Tanaka
authors.forename: Takahiro
authors.initials: T
authors.lastname: Iwamoto
mesh_terms: D003878:Dermatoglyphics; D017097:Electric Impedance; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D033401:Microscopy, Acoustic / Q000379:methods; D012680:Sensitivity and Specificity; D012867:Skin / Q000000981:diagnostic imaging*