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. Author manuscript; available in PMC: 2009 Oct 2.
Published in final edited form as: Ultrasound Med Biol. 2007 May 3;33(8):1277–1284. doi: 10.1016/j.ultrasmedbio.2007.02.004

Figure 2.

Figure 2

Figure 2

Figure 2

Figure 2

Transducer photos and typical pulse and spectrum from the transducer are shown. Figure 2A is a close up of diced 5 MHz matrix array transducer for intracrannial brain imaging. The total aperture size is 6.48 × 6.48 mm. Figure 2B is a photograph of completed matrix array transducer showing working port and a Brockenbrough needle coming out of the port. Figures 2C and 2D show typical pulse and spectrum from the transducer pictured in figure 2A and 2B. The center frequency is 4.5 MHz and the −6 dB fractional bandwidth is 30%.