| |
|
|
|
|
|
|
|
|
1. |
Record Nr. |
UNINA9910571741003321 |
|
|
Autore |
Ramalli Alessandro <1983-> |
|
|
Titolo |
Development of novel ultrasound techniques for imaging and elastography : from simulation to real-time implementation / / Alessandro Ramalli |
|
|
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Firenze, Italy : , : Firenze University Press, , [2013] |
|
©2013 |
|
|
|
|
|
|
|
|
|
Descrizione fisica |
|
1 online resource (119 pages) : illustrations |
|
|
|
|
|
|
Collana |
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
Soggetti |
|
Ultrasonic imaging |
Elastography |
|
|
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Nota di bibliografia |
|
Includes bibliographical references. |
|
|
|
|
|
|
Nota di contenuto |
|
Introduction -- Contributions -- 1. Ultrasound Basics -- 1.1. Ultrasound propagation -- 1.2. Transducers and probes -- 1.3. Echo-signal elaboration -- 1.4. Open issues in ultrasound investigation -- 2. ULA-OP -- 2.1. Introduction -- 2.2. System description -- 2.3. Examples of non-standard application -- 2.4. High Frame Rate Imaging -- 2.5. Expansion capabilities and future work -- 3. Novel Ultrasound Simulation Methods -- 3.1. Field simulation in homogeneous linear media: Simag -- 3.2. Field simulation in nonlinear media: GASM -- 4. A Novel Ultrasound Experimental Method: Frequency Domain Elastography -- 4.1. Introduction -- 4.2. Methods -- 4.3. Computational cost analysis and reduction -- 4.4. Computer-guided compression experiments -- 4.5. Freehand compression experiments -- 4.6. Real-time implementation -- 4.7. Discussion and conclusion -- 5. Novel Ultrasound Experimental Methods: Work in Progress -- 5.1. 2D HFR color vector Doppler -- 5.2. Adaptive beamforming through layered structures -- 5.3. Pulse compression -- 6. Conclusion -- Bibliography. |
|
|
|
|
|
|
|
|
Sommario/riassunto |
|
Ultrasound techniques offer many advantages, in terms of ease of realization and patients' safety. The availability of suitable hardware and software tools is condicio sine qua non for new methods testing. |
|
|
|
|
|
|
|
|
|
|
|
|
|
This PhD project addresses medical ultrasound signal processing and seeks to achieve two scientific goals: the first is to contribute to the development of an ultrasound research platform, while the second is introducing and validating, through this platform, non-standard methods. During the thesis, the capabilities of the system were improved by creating advanced software tools, such as acoustic field simulators, and by developing echo-signals elaboration programs. In particular, a novel technique for quasi-static elastography was developed, in-vitro tested and implemented in real-time. |
|
|
|
|
|
|
2. |
Record Nr. |
UNINA9910825488803321 |
|
|
Autore |
Khoo Chris |
|
|
Titolo |
Instant audio processing with Web Audio / / Chris Khoo |
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Birmingham, England : , : Packt Publishing, , 2013 |
|
|
|
|
|
|
|
ISBN |
|
|
|
|
|
|
Descrizione fisica |
|
1 online resource (76 p.) |
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
Soggetti |
|
Computer sound processing |
Digital audio editors |
|
|
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Note generali |
|
Description based upon print version of record. |
|
|
|
|
|
|
Nota di contenuto |
|
Cover; Copyright; Credits; About the Author; About the Reviewer; www.PacktPub.com; Table of Contents; Preface; Instant Audio Processing with Web Audio; Setting up a web host (Simple); Playing audio in a loop (Simple); Setting the volume (Simple); Automating the audio parameters (Intermediate); Building an equalizer using BiquadFilterNode (Advanced) |
|
|
|
|
|
|
|
|
Sommario/riassunto |
|
Filled with practical, step-by-step instructions and clear explanations for the most important and useful tasks. A concise, recipe-based approach to use Web Audio's automation functionality to produce interesting audio effects such as audio stitching and ducking.This book is designed for developers with some HTML and JavaScript programming experience who are seeking to learn about Web Audio. Experience with AJAX and web server installation/configuration is a plus but is not a necessity in order to follow the content of the book. |
|
|
|
|
| |