Arrangements for personal monitoring have evolved as dose limits and practices using radiation have developed. Therefore, new approaches, involving more personal dosimetry, are required and methods are needed that can be used to predict probable dose levels, so that risk assessments can be prepared to determine the level of dose monitoring for individual staff members. The authors of this text have included short reviews of dose levels to allow anticipated exposure levels within different clinical specialties to be predicted. It sets out recommendations that are designed to help radiation protection practitioners and healthcare workers assess exposure levels for personnel and determine monitoring requirements based on established rules. This book is essential reading for medical physicists in radiation protection, diagnostic radiology and nuclear medicine, as well as radiographers and technologists, due to changes in global dosimetry requirements. Additionally, it presents guidelines for medical physicists and others using radiation.