{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:44:49Z","timestamp":1760233489181,"version":"build-2065373602"},"reference-count":28,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2021,1,18]],"date-time":"2021-01-18T00:00:00Z","timestamp":1610928000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51805529","11704397"],"award-info":[{"award-number":["51805529","11704397"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"the Funds for Jiangsu Provincial Key Research and Development Plan","award":["BE2017601"],"award-info":[{"award-number":["BE2017601"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Ultrasound plane wave imaging technology has been applied to more clinical situations than ever before because of its rapid imaging speed and stable imaging quality. Most transducers used in plane wave imaging are linear arrays, but their structures limit the application of plane wave imaging technology in some special clinical situations, especially in the endoscopic environment. In the endoscopic environment, the size of the linear array transducer is strictly miniaturized, and the imaging range is also limited to the near field. Meanwhile, the near field of a micro linear array has serious mutual interferences between elements, which is against the imaging quality of near field. Therefore, we propose a new structure of a micro ultrasound linear array for plane wave imaging. In this paper, a theoretical comparison is given through sound field and imaging simulations. On the basis of primary work and laboratory technology, micro uniform and non-uniform linear arrays were made and experimented with the phantom setting. We selected appropriate evaluation parameters to verify the imaging results. Finally, we concluded that the micro non-uniform linear array eliminated the artifacts better than the micro uniform linear array without the additional use of signal processing methods, especially for target points in the near-field. We believe this study provides a possible solution for plane wave imaging in cramped environments like endoscopy.<\/jats:p>","DOI":"10.3390\/s21020640","type":"journal-article","created":{"date-parts":[[2021,1,20]],"date-time":"2021-01-20T03:34:25Z","timestamp":1611113665000},"page":"640","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Micro Non-Uniform Linear Array (MNULA) for Ultrasound Plane Wave Imaging"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5076-6472","authenticated-orcid":false,"given":"Yujia","family":"Tang","sequence":"first","affiliation":[{"name":"Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei 230026, China"},{"name":"Suzhou Institution of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhangjian","family":"Li","sequence":"additional","affiliation":[{"name":"Suzhou Institution of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2432-9225","authenticated-orcid":false,"given":"Yaoyao","family":"Cui","sequence":"additional","affiliation":[{"name":"Suzhou Institution of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7533-9274","authenticated-orcid":false,"given":"Chen","family":"Yang","sequence":"additional","affiliation":[{"name":"Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei 230026, China"},{"name":"Suzhou Institution of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiabing","family":"Lv","sequence":"additional","affiliation":[{"name":"Suzhou Institution of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5801-0496","authenticated-orcid":false,"given":"Yang","family":"Jiao","sequence":"additional","affiliation":[{"name":"Suzhou Institution of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1177\/016173468100300306","article-title":"Compound scanning with an electrically steered beam","volume":"3","author":"Berson","year":"1981","journal-title":"Ultrason. Imaging"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1177\/016173469802000201","article-title":"Multi-angle compound imaging","volume":"20","author":"Jespersen","year":"1998","journal-title":"Ultrason. Imaging"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1016\/S0887-2171(01)90018-6","article-title":"Real-time spatial compound imaging: Application to breast, vascular, and musculoskeletal ultrasound","volume":"22","author":"Entrekin","year":"2001","journal-title":"Semin. Ultrasound CT MRI"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1109\/TUFFC.2009.1067","article-title":"Coherent Plane-Wave Compounding for Very High Frame Rate Ultrasonography and Transient Elastography","volume":"56","author":"Montaldo","year":"2009","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"262","DOI":"10.1109\/58.139123","article-title":"Calculation of Pressure Fields from arbitarily Shaped, Apodized, and Ecited Ultrasound Transducers","volume":"39","author":"Jensen","year":"1992","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1373","DOI":"10.1016\/j.ultrasmedbio.2008.02.002","article-title":"Quantitative Assessment of Breast Lesion Viscoelasticity: Initial Clinical Results Using Supersonic Shear Imaging","volume":"34","author":"Tanter","year":"2008","journal-title":"Ultrasound Med. Biol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1661","DOI":"10.1109\/TMI.2012.2203316","article-title":"Ultrafast Doppler Imaging of Blood Flow Dynamics in the Myocardium","volume":"31","author":"Osmanski","year":"2012","journal-title":"IEEE Trans. Med Imaging"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1109\/TUFFC.2014.2882","article-title":"Ultrafast imaging in biomedical ultrasound","volume":"61","author":"Mickael","year":"2014","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_9","first-page":"1128","article-title":"Usefuelness of Endoscopic Ultrasonography (EUS-E) to Measur Liver Stiffness","volume":"70","author":"Duman","year":"2019","journal-title":"Hepatology"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1461","DOI":"10.12669\/pjms.35.5.1075","article-title":"Diagnostic value of endoscopic ultrasound elastography for benign and malignant digestive system tumors","volume":"35","author":"Lv","year":"2019","journal-title":"Pak. J. Med Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"721","DOI":"10.1111\/den.13518","article-title":"Endoscopic Doppler probe ultrasonography for post-endoscopic submucosal dissection ulcer: New device to show blood flow depth","volume":"31","author":"Shiratori","year":"2019","journal-title":"Dig. Endosc."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"243","DOI":"10.1016\/S0016-5107(97)70266-9","article-title":"Endoscopic ultrasound\u2013guided fine-needle aspiration biopsy using linear array and radial scanning endosonography","volume":"45","author":"Gress","year":"1997","journal-title":"Gastrointest. Endosc."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1273","DOI":"10.1121\/1.390734","article-title":"Explososcan\u2014A parallerl processing technique for ultrasound imaging with linear phased-arrays","volume":"75","author":"Shattuck","year":"1984","journal-title":"J. Acoust. Soc. Am."},{"key":"ref_14","first-page":"317","article-title":"A column-row-parallel ultrasound imaging architecture for 3d plane-wave imaging and Tx 2nd-order harmonic distortion (HD2) reduction","volume":"65","author":"Chen","year":"2014","journal-title":"IEEE Int. Ultrason. Symp."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"730","DOI":"10.1049\/el:19970499","article-title":"Sidelobe reduction of asymmetric linear array by spacing perturbation","volume":"33","author":"Yu","year":"1997","journal-title":"Electron. Lett."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"511","DOI":"10.1109\/8.768787","article-title":"Design of unequally spaced arrays for performance improvement","volume":"47","author":"Kumar","year":"1999","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"222","DOI":"10.1109\/TAP.1960.1144829","article-title":"Linear Arrays with arbitrarily distributed elements","volume":"8","author":"Unz","year":"1960","journal-title":"IRE Trans. Antennas Propag."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1109\/TAP.2004.841324","article-title":"Generalized analytical technique for the synthesis of unequally spaced arrays with linear, pla-nar, cylindrical or spherical geometry","volume":"53","author":"Kumar","year":"2005","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"172","DOI":"10.1109\/TAP.1968.1139138","article-title":"Minimum-redundancy linear arrays","volume":"16","author":"Moffet","year":"1968","journal-title":"IRE Trans. Antennas Propag."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"620","DOI":"10.1109\/58.39112","article-title":"A silicon electrostatic ultrasonic transducer","volume":"36","author":"Suzuki","year":"1989","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Tang, Y., Jiao, Y., Li, Z., Lv, J., Yang, C., and Cui, Y. (2019, January 3\u20139). Ultrasound Plane-Wave Imaging Based on Linear Arrays with Variable Inter-element Spacings. Proceedings of the IEEE International Ultrasonics Symposium, Glasgow, UK.","DOI":"10.1109\/ULTSYM.2019.8926301"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"1853","DOI":"10.1109\/TUFFC.2013.2771","article-title":"Stolt\u2019s f-k migration for plane wave ultrasound imaging","volume":"60","author":"Garcia","year":"2013","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1440","DOI":"10.1109\/TUFFC.2014.006934","article-title":"Plane wave compounding based on a joint transmitting-receiving adaptive beamformer","volume":"62","author":"Zhao","year":"2015","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"880","DOI":"10.1109\/TUFFC.2006.1632680","article-title":"Extended high-frame rate imaging method with limited-diffraction beams","volume":"53","author":"Jiqi","year":"2006","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_25","unstructured":"(2003, September 08). Ultrasound Imaging System Performance Assessment. Available online: http:\/\/www.aapm.org\/meetings\/03aM\/pdf\/9905-9859.pdf."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1109\/TAP.1966.1138612","article-title":"A study of space-tapered arrays","volume":"14","author":"Lo","year":"2004","journal-title":"IRE Trans. Antennas Propag."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Cen, L., Ser, W., Cen, W., and Yu, Z.L. (June, January 30). Linear sparse array synthesis via convex optimization. Proceedings of the 2010 IEEE International Symposium on Circuits and Systems, Pairs, France.","DOI":"10.1109\/ISCAS.2010.5537576"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2553","DOI":"10.1109\/TAP.2010.2048864","article-title":"Synthesis of Unequally Spaced Antenna Arrays by Using Differential Evolution","volume":"58","author":"Lin","year":"2010","journal-title":"IEEE Trans. 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