Meet the editor

Reda R. Gharieb, Ph.D. is a Professor of Biomedical and Bioelectronics Engineering, Assiut University, Egypt. He served as a scientist in Japan and the United States. He worked for Fairway Medical Technologies Inc. and Seno Medical Instruments Inc., Texas, USA, on their photoacoustic imaging (PAI) technology. He developed algorithms for 2D image reconstruction in PAI of breast and prostate cancers. He also developed an algorithm for

3D image reconstruction in PAI of a small animal, using a rotated ARC-shaped sensor array. Dr. Gharieb has authored three books, four book chapters, two patents, and about sixty papers. He has also edited two books. His research interests include signal/image processing, modeling and simulation, statistical and scientific computing, bioinstrumentation, and computed tomography.

Contents

and Medical Applications *by Reda R. Gharieb*

of the Chest in COVID-19 Patients

PET-CT Imaging and Applications

*by Sikandar Shaikh*

*by Anil K. Bharodiya*

Pandemic

**Preface XI**

**Chapter 1 1**

**Chapter 2 19**

**Chapter 3 29**

**Chapter 4 43**

**Chapter 5 63**

X-Rays and Computed Tomography Scan Imaging: Instrumentation

Use of Computed Tomography (CT)-Scan in the Current Coronavirus

Radiation Doses and Risk Assessment during Computed Tomography

Feature Extraction Methods for CT-Scan Images Using Image Processing

*by Elena Ivanovna Matkevich and Ivan Vasilievich Ivanov*

*by Ibrahima Niang, Géraud Akpo, Khadidiatou Ndiaye Diouf and Sokhna Ba*

## Contents


Preface

Computed tomography (CT) was introduced commercially for the first time by British engineer Godfrey Hounsfield in 1972. Since then, it has become the main imaging modality in hospitals and clinical centers. A CT scan can be used to visualize nearly all parts of the body to diagnose disease or injury as well as to plan medical, surgical, or radiation treatment. Particularly, it is well suited for quickly examining people who may have internal injuries from car accidents or other types of traumas. In addition, CT plays an important role in chest imaging in the current COVID-19

The book consists of five chapters. Chapter 1, by Dr. Reda R. Gharieb, presents the instrumentational basics of CT scanning, a mathematical and simulation review of a CT algorithm called the filtered back projection, in linear- and fan-beams projection, and some medical applications of CT imaging. Chapter 2, by Drs. Ibrahima Niang, Géraud Akpo, Khadidiatou Ndiaye Diouf, and Sokhna Ba, discusses the use of CT in the context of the coronavirus pandemic. It explains the effect of coronavirus on the lungs and how physicians can recognize this effect. Chapter 3, by Drs. Elena Ivanovna Matkevich and Ivan Vasilievich Ivanov presents a study of radiation doses and risk assessment during CT of the chest in COVID-19 patients. Chapter 4, by Dr. Sikandar Shaikh, presents the basics and applications of positron emission tomography (PET), an imaging technology that uses positron emission instead of X-rays. Finally, Chapter 5, by Dr. Anil K. Bharodiya, deals with handling, using different image processing methods, and final CT images for feature extraction

The editor thanks the contributing authors for their efforts and for sharing their research. The editor also thanks and appreciates the service and support received from Author Service Managers Mrs. Dzeni Kalcic, Mrs. Nikolina Pomenic, and

Finally, I hope that this book will be a useful resource for readers interested in

**Reda R. Gharieb**

Assiut University, Assiut, Egypt

Professor of Biomedical Engineering and Electronics,

advancing their knowledge and experience of CT scanning.

pandemic.

in recognition of patterns.

Mrs. Zrinka Tomicic at IntechOpen.
