✦ LIBER ✦

Tomographic reconstruction technique for pulsed-echo imaging

✍ Scribed by Iwaki Akiyama

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 178 KB
Volume: 8
Category: Article
ISSN: 0899-9457
DOI: 10.1002/(sici)1098-1098(1997)8:5<432::aid-ima3>3.0.co;2-b

No coin nor oath required. For personal study only.

✦ Synopsis

This article proposes a tomographic reconstruction

II. THEORY

technique using divergent ultrasonic waves of a circular arc wavefront A one-dimensional thin transducer array to form the divergent which are formed by one-dimensional thin-phased array. The projecultrasonic waves was used as a phased array. Figure 1 shows the tion data which are obtained by phasing of transmitting and receiving coordinates and the array location. The echo signal, which is signals are applied to the filtered back projection algorithm so that received by the jth element of the array at x Å x j , y Å 0, z Å 0, the image at the spherical surface is reconstructed. The experiments

📜 SIMILAR VOLUMES

Rapid iterative reconstruction for echo

Rapid iterative reconstruction for echo planar imaging

✍ David L. Foxall; Paul R. Harvey; Jian Huang 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 197 KB

A rapid automated method for reconstructing echo planar imaging (EPI) data has been developed and is shown to improve image quality by suppressing the troublesome ghost artifact. The algorithm can be applied without prior knowledge obtained from either reference scans or operator intervention. It fi

Pulse-echo microwave imaging for NDE of

Pulse-echo microwave imaging for NDE of civil structures: Image reconstruction, enhancement, and object recognition

✍ Stephanie J. Lockwood; Hua Lee 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 118 KB

This article presents an overview of the application of enhancement based on the wavefield statistics within the available microwave imaging in nondestructive evaluation (NDE) of civil strucfrequency band. The experimental results clearly demonstrate the tures. The presentation includes the image fo

New reconstruction technique for echo-pl

New reconstruction technique for echo-planar imaging to allow combined use of odd and even numbered echoes

✍ Kensuke Sekihara; Hideki Kohno 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 330 KB

An image reconstruction technique for echo-planar imaging is proposed. This technique combines odd and even numbered echo signals. It is thus possible to reduce the frequency of the time-modulated gradient used in echo-planar imaging by 50%, and to reduce its amplitude by almost 50% for sinusoidal g

Optimized distortion correction techniqu

Optimized distortion correction technique for echo planar imaging

✍ Nan-kuei Chen; Alice M. Wyrwicz 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 139 KB

A multislice gradient echo pulse sequenc

A multislice gradient echo pulse sequence for CEST imaging

✍ W. Thomas Dixon; Ileana Hancu; S. James Ratnakar; A. Dean Sherry; Robert E. Lenk 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 148 KB

## Abstract Chemical exchange–dependent saturation transfer and paramagnetic chemical exchange–dependent saturation transfer are agent‐mediated contrast mechanisms that depend on saturating spins at the resonant frequency of the exchangeable protons on the agent, thereby indirectly saturating the b

On self-refocusing pulses for rapid grad

On self-refocusing pulses for rapid gradient-echo imaging

✍ G. C. McKinnon 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 335 KB

## Abstract Self‐refocusing slice selective radio frequency pulses could potentially be used to reduce imaging times in rapid gradient‐echo sequences. However, in practice, the improvement is likely to be no greater than about 20%, and at the expense of much increased radio frequency power requirem