Biomedical Engineering Reference
In-Depth Information
CHAPTER
15
Radiation Imaging
Joseph D. Bronzino, PhD, PE
OUTLINE
15.1 Introduction
995
15.4 Radiographic Imaging Systems 1018
15.2 Emission Imaging Systems
997
15.5 Exercises
1037
15.3 Instrumentation and Imaging
Devices
Suggested Readings
1038
1013
AT THE CONCLUSION OF THIS CHAPTER, STUDENTS WILL BE
ABLE TO:
Understand the fundamental principles of
radioactivity.
Understand that ionizing radiation, as
generally employed for medical imaging, is
either externally produced and detected after
it passes through the patient or introduced
into the body, making the patient the source
of radiation emissions.
Understand the operation of basic nuclear
instrumentation and imaging devices such
as scintillation counters and gamma
cameras.
Become familiar with the basic concepts of
computerized tomography systems.
15.1 INTRODUCTION
Throughout history, a persistent goal of medicine has been the development of procedures
for determining the basic cause of a patient's distress. As a result, the search for tools capable
of “looking into” the human organism with minimal harm to the patient has always been
considered important. However, not until the later part of the twentieth century were such
devices made available. Today, modern imaging devices, based on fundamental concepts
