Treatment Planning for Hyperthermia with Ultrasound Phased Arrays PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Treatment Planning for Hyperthermia with Ultrasound Phased Arrays PDF full book. Access full book title Treatment Planning for Hyperthermia with Ultrasound Phased Arrays by Robert J. McGough. Download full books in PDF and EPUB format.
Author: Robert J. McGough
Publisher:
ISBN:
Category :
Languages : en
Pages : 324
Get Book Here
Book Description
Author: Robert J. McGough
Publisher:
ISBN:
Category :
Languages : en
Pages : 324
Get Book Here
Book Description
Author: Mohammed Salameh Ibbini
Publisher:
ISBN:
Category :
Languages : en
Pages : 530
Get Book Here
Book Description
Author: Paul Joseph Benkeser
Publisher:
ISBN:
Category :
Languages : en
Pages : 252
Get Book Here
Book Description
Author: Alan Jeffrey Fenn
Publisher: Artech House
ISBN: 1596933801
Category : Medical
Languages : en
Pages : 241
Get Book Here
Book Description
From electromagnetic field theory for tissue heating... to simulations of adaptive phased array thermotherapy for deep tumors of the torso... to coverage of arrays for tumors in the head, neck, breast, and chest wall, this timely resource offers you expert guidance in this emerging area.
Author: Eduardo Moros
Publisher: Taylor & Francis
ISBN: 1439848920
Category : Medical
Languages : en
Pages : 375
Get Book Here
Book Description
The field of thermal therapy has been growing tenaciously in the last few decades. The application of heat to living tissues, from mild hyperthermia to high-temperature thermal ablation, has produced a host of well-documented genetic, cellular, and physiological responses that are being researched intensely for medical applications, particularly fo
Author: Hong Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 186
Get Book Here
Book Description
Author: Emad S. A. Ebbini
Publisher:
ISBN:
Category :
Languages : en
Pages : 330
Get Book Here
Book Description
One of the major limitations of hyperthermia as a cancer treatment modality is the lack of heating equipment and techniques capable of consistent therapeutic heating of deep-seated tumors. This thesis introduces a new pattern synthesis method capable of precisely controlling the power deposition level at a set of control points in the treatment volume using ultrasound phased arrays. This method, called the pseudoinverse pattern synthesis method, reduces the pattern synthesis problem to one of estimating the minimum-norm least-square solution to a matrix equation of the form, Hu = p, where u is the array excitation vector, p is the desired complex pressure at the control points, and H is a matrix propagation operator from the surface of the array to the control points. A useful solution to this problem is obtained when the number of control points is less than the number of elements of the array and the matrix H is full rank. This solution, called the minimum-norm solution, allows the array to be focused at several points simultaneously. This multiple-focus approach is important when ultrasound is used as a heating agent as it reduces the spatial-peak temporal-peak intensity required to generate a specified heating pattern. Furthermore, the minimum-norm solution allows the optimization of the array excitation efficiency and the intensity gain at the control points. These quantities are very significant for achieving deep localized heating with phased arrays. In fact, optimization of the intensity gain at the control points generally results in removal of high intensity interference patterns from the synthesized field. The removal of high intensity interference patterns eliminates one of the major disadvantages of multiple focusing. The pseudoinverse pattern synthesis method is introduced and discussed in detail. Simulation results are used to demonstrate its powerful capabilities as a pattern synthesis method. Its generality is demonstrated by the use of several different array structures to synthesize different multiple-focus patterns. Simulation results indicate that direct synthesis of multiple-focus patterns can provide an alternative to single-focus scanning. Finally, measured intensity profiles using a prototype cylindrical-section array agree well with theoretically predicted profiles.
Author: Xiaozheng Zeng
Publisher:
ISBN:
Category : Diagnostic ultrasonic imaging
Languages : en
Pages : 376
Get Book Here
Book Description
Author: Hong Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 294
Get Book Here
Book Description
Author: M.Heinrich Seegenschmiedt
Publisher: Springer Science & Business Media
ISBN: 3642578586
Category : Medical
Languages : en
Pages : 479
Get Book Here
Book Description
Hyperthermia has been found to be of great benefit in combination with radiation therapy or chemotherapy in the management of patients with difficult and com plicated tumor problems. It has been demonstrated to increase the efficacy, of ionising radiation when used locally but also has been of help in combination with systemic chemotherapy where hyperthermia is carried out to the total body. Problems remain with regard to maximizing the effects of hyperthermia as in fluenced by blood flow, heat loss, etc. The present volume defines the current knowledge relative to hyperthermia with radiation therapy and/or chemotherapy, giving a comprehensive overview of its use in cancer management. Philadelphia/Hamburg, June 1995 L.W. BRADY H.-P. HEILMANN Preface In an attempt to overcome tumor resistance, hypoxia, or unfavorable tumor condi tions, oncological research has come to focus on gene therapy, immunotherapy, new cytotoxic agents, and increasingly sophisticated radiotherapy. Radiation research has been directed towards heavy particle therapy and modification of the radiation response by either protecting or sensitizing agents. Improved dose localization using rotational or conformal strategies has also been implemented. Recently, changes in radiation fractionation schedules have shown promise of better results. Hyperthermia in cancer therapy can be viewed similarly as another means to increase the sensitivity of tumors to radio- and chemotherapy.
