title: High range resolution medical acoustic vascular imaging with frequency domain interferometry.
abstract: For high range resolution acoustic vascular imaging we apply frequency domain interferometry and Capon method to a few frames of in-phase and quadrature (IQ) data acquired by a commercial ultrasonographic device. To suit the adaptive beamforming algorithm to medical acoustic imaging we employ three techniques; frequency averaging, whitening, and pseudo-double RF data conversion. The proposed method detected two couples of boundaries 0.26 and 0.19 mm apart using a single frame and two frames of IQ data, respectively, where each couple of boundaries is indistinguishable from a single boundary utilizing B-mode images. Further this algorithm could depict a swine femoral artery with higher range resolution than conventional B-mode imaging. These results indicate the potential of the proposed method for the range resolution improvement in ultrasonography, originating the progress in detection of vessel stenosis.
authors.affiliation: Graduate School of Informatics, Department of Communications and Computer Engineering, Kyoto University, Japan. hirofumi.taki@mb6.seikyou.ne.jp
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Taki
authors.forename: Kousuke
authors.initials: K
authors.lastname: Taki
authors.forename: Takuya
authors.initials: T
authors.lastname: Sakamoto
authors.forename: Makoto
authors.initials: M
authors.lastname: Yamakawa
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Shiina
authors.forename: Toru
authors.initials: T
authors.lastname: Sato
mesh_terms: D000162:Acoustics; D000818:Animals; D005263:Femoral Artery / Q000502:physiology*; D005780:Gelatin; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007368:Interferometry / Q000379:methods*; D011846:Radio Waves; D034421:Sus scrofa
chemical_list: D005780:Gelatin