Measurement In Ultrasound

Measurement and interpretation of key ultrasound parameters are essential to differentiate normal anatomy from pathology. By using Measurement in Ultrasound, trainee radiologists and ultrasonographers can gain an appreciation of such measurements, while practitioners can use it as a valuable reference in the clinical setting. The book follows a consistent format throughout for ease of reference and features useful information on preparation and positioning of the patient for ultrasound, the type of transducer and method to be used, the appearance of the resulting ultrasound images and the measurements to be derived from them. Designed for frequent use in everyday practice, the book includes more than 150 high-quality ultrasound images annotated with key measurements and accompanied by concise explanatory text. Normal variants are provided, along with ranges for features that can change during development and in disease. This new edition covers relevant developments in ultrasound. Where appropriate, updated ultrasound measurements that have arisen are also included and key references are provided as an aid to further study.

This long-awaited New Edition is still the only source devoted entirely to ultrasound measurements. Inside, you'll find the most accurate coverage for all major pathologic entities-from the abdomen to the vascular system. Each measurement is based on an evidence-based approach in correlation with age, sex, and gestation stage. Coverage also includes the latest technologies, such as color Doppler. Features measurements for hundreds of common entities from the abdomen, head and neck, genitourinary, gynecologic, and vascular system, providing definitive information on normal and variant ultrasound measurements. Provides measurements based on a full spectrum of variations, including age, sex, and gestation stage. Includes separate sections on first and second and third trimester pregnancies to help you determine the normal growth and development of the fetus. Presents the highest accuracy rate possible through an evidence-based approach using multiple sources from the primary literature along with tables that collate the findings. Uses all new images throughout, providing you with better image quality and accuracy. Features color Doppler images coupled with conceptual line drawings that illustrate key observations for each measurement set. With 28 additional expert contributors

Measurement and interpretation of key ultrasound parameters are essential to differentiate normal anatomy from pathology. By using Measurement in Ultrasound, trainee radiologists and ultrasonographers can gain an appreciation of such measurements, while practitioners can use it as a valuable reference in the clinical setting. The book follows a consistent format throughout for ease of reference and features useful information on preparation and positioning of the patient for ultrasound, the type of transducer and method to be used, the appearance of the resulting ultrasound images and the measurements to be derived from them. Designed for frequent use in everyday practice, the book includes more than 150 high-quality ultrasound images annotated with key measurements and accompanied by concise explanatory text. Normal variants are provided, along with ranges for features that can change during development and in disease. This new edition covers relevant developments in ultrasound. Where appropriate, updated ultrasound measurements that have arisen are also included and key references are provided as an aid to further study.

Medical applications of ultrasound range from therapy, foetal monitoring, diagnostic imaging and blood flow measurement, to surgery and lithotripsy. Ever since the earliest developments of medical ultrasound there has been an interest in the measurement and characterisation of the ultrasonic fields generated in these applications, either for assessment of performance of equipment or for safety. Until recently, procedures for acoustic output measurements were ill-defined, but standards are now being developed internationally by the International Electrotechnical Commission (1EC) and reliable commercial measuring equipment is becoming more widely available. The aim of this book is to introduce acoustic output measurement techniques and to provide an insight into the measurement methods. The material presented is based on a course originally run during November 1989 at the National Physical Laboratory. In addition to the lectures, the course consisted of a series of practicals to allow participants to gain experience of making measurements. Teddington, UK Roy C. Preston February 1991 Contents List of Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii List of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 Safety of Diagnostic Ultrasonic Equipment: The Relevance of Acoustic Output Information to the Clinical User R. C. Preston 1. 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1. 2 The Relevance of Acoustic Output Information. . . . . . . . . . . . . 6 1. 2. 1 What Is Acoustic Output Information? . . . . . . . . . . . . . . . . . . . 6 1. 2. 2 What Is Acoustic Output Information Used For? . . . . . . . 6 1. 2. 3 Why Should You Know the Acoustic Output Levels of Your Equipment? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1. 2. 4 Are Acoustic Output Levels Really that Important? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Measurement of key parameters is an essential part of interpreting ultrasound scans and differentiating normal anatomy from pathology. Trainee radiologists and ultrasonographers often find it difficult to gain a good appreciation of such measurements. This book is a user-friendly handbook that can be used in day-to-day practice. It is made up of a series of ultrasound images with accompanying explanatory line drawings together with all key measurements. Normal variants are given together with ranges for features that change during development. There is also a list of key references for each criterion. Coverage is in line with examination requirements making it particularly suitable for trainee radiologists and ultrasonographers.

Measurement and interpretation of key ultrasound parameters are essential to differentiate normal anatomy from pathology. By using Measurement in Ultrasound, trainee radiologists and ultrasonographers can gain an appreciation of such measurements, while practitioners can use it as a valuable reference in the clinical setting.