PURPOSE: To use quantitative ultrasonographic measurements to compare the effect of a polymeric coating designed to increase needle echogenicity to commercially available needles. MATERIALS AND METHODS: Commercially available standard smooth and dimpled echogenic tip 21-gauge needles established reference levels of echogenicity in gelatin-based and turkey breast phantoms. Examples of both types of needles were coated with a thin polymeric film that utilizes entrapped microbubbles of air on its surface to increase echogenicity. Samples of each type in both coated and noncoated versions were placed in phantoms in matched positions and imaged with clinical ultrasound machines. Similar numbers of each category were evaluated at various angles of insonation for a total of 109 images. Similar numbers of each category were imaged at 5-minute intervals for up to 38 minutes for a total of 226 images. Images were recorded, digitized, and evaluated for relative echo strength in arbitrary echogenic brightness units. RESULTS: Coating increased peak echogenicity over the entire needle to a level that closely approximates the peak echogenicity of dimpled needle tips (means: dimpled = 834, coated smooth = 803, coated dimpled = 823; P = .54). Smooth is lower than this group at 468 (P = .0001). Representative area echogenicity increased with coating or dimpling (smooth = 377 vs coated smooth = 778, coated dimpled = 690, dimpled = 775; P = .0001). Coating increased peak values 74% and area values 95% compared to smooth. Decreased angles of insonation moderately reduced echogenicity on coated smooth, coated dimpled, and dimpled, while it decreased to below good visibility threshold on standard smooth needles. The echogenicity of the coated needles fades in saline with time (1%/min). CONCLUSION: Objective measurements show that this coating significantly increases echogenicity of entire needles to match that obtained with a dimpled tip.
PURPOSE: To use quantitative ultrasonographic measurements to compare the effect of a polymeric coating designed to increase needle echogenicity to commercially available needles. MATERIALS AND METHODS: Commercially available standard smooth and dimpled echogenic tip 21-gauge needles established reference levels of echogenicity in gelatin-based and turkey breast phantoms. Examples of both types of needles were coated with a thin polymeric film that utilizes entrapped microbubbles of air on its surface to increase echogenicity. Samples of each type in both coated and noncoated versions were placed in phantoms in matched positions and imaged with clinical ultrasound machines. Similar numbers of each category were evaluated at various angles of insonation for a total of 109 images. Similar numbers of each category were imaged at 5-minute intervals for up to 38 minutes for a total of 226 images. Images were recorded, digitized, and evaluated for relative echo strength in arbitrary echogenic brightness units. RESULTS: Coating increased peak echogenicity over the entire needle to a level that closely approximates the peak echogenicity of dimpled needle tips (means: dimpled = 834, coated smooth = 803, coated dimpled = 823; P = .54). Smooth is lower than this group at 468 (P = .0001). Representative area echogenicity increased with coating or dimpling (smooth = 377 vs coated smooth = 778, coated dimpled = 690, dimpled = 775; P = .0001). Coating increased peak values 74% and area values 95% compared to smooth. Decreased angles of insonation moderately reduced echogenicity on coated smooth, coated dimpled, and dimpled, while it decreased to below good visibility threshold on standard smooth needles. The echogenicity of the coated needles fades in saline with time (1%/min). CONCLUSION: Objective measurements show that this coating significantly increases echogenicity of entire needles to match that obtained with a dimpled tip.
Authors: Matthew P Fronheiser; Salim F Idriss; Patrick D Wolf; Stephen W Smith Journal: IEEE Trans Ultrason Ferroelectr Freq Control Date: 2008 Impact factor: 2.725
Authors: Shou-Jiang Tang; Andreas S Vilmann; Adrian Saftoiu; Wanmei Wang; Costin Teodor Streba; Peter P Fink; Michael Griswold; Ruonan Wu; Christoph F Dietrich; Christian Jenssen; Michael Hocke; Marcus Kantowski; Jürgen Pohl; Paul Fockens; Jouke T Annema; Erik H F M van der Heijden; Roald Flesland Havre; Khanh Do-Cong Pham; Rastislav Kunda; Pierre H Deprez; Jinga Mariana; Enrique Vazquez-Sequeiros; Alberto Larghi; Elisabetta Buscarini; Pietro Fusaroli; Maor Lahav; Rajesh Puri; Pramod Kumar Garg; Malay Sharma; Fauze Maluf-Filho; Anand Sahai; William R Brugge; Linda S Lee; Harry R Aslanian; Andrew Y Wang; Vanessa M Shami; Arnold Markowitz; Ali A Siddiqui; Girish Mishra; James M Scheiman; Gerard Isenberg; Uzma D Siddiqui; Raj J Shah; James Buxbaum; Rabindra R Watson; Field F Willingham; Manoop S Bhutani; Michael J Levy; Cynthia Harris; Michael B Wallace; Christian Pállson Nolsøe; Torben Lorentzen; Niels Bang; Sten Mellerup Sørensen; Odd Helge Gilja; Mirko D'Onofrio; Fabio Piscaglia; Norbert Gritzmann; Maija Radzina; Zeno Adrian Sparchez; Paul S Sidhu; Simon Freeman; Timothy C McCowan; Cyrillo Rodrigues de Araujo; Akash Patel; Mohammad Adel Ali; Garth Campbell; Edward Chen; Peter Vilmann Journal: Gastrointest Endosc Date: 2016-02-10 Impact factor: 9.427