Dynamic Computed Tomography
Basic Principles and Clinical Applications
1st Edition
Published on 1. November 1984
Book
Hardback
XI, 151 pages
978-3-540-13435-0 (ISBN)
Description
The authors present their experience in more than seven years of dynamic computed tomography in clinical practice. Time density curves and characteristic examples in specific regions of interest enrich the presentation. Dynamic computed tomography makes an important contribu tion to the diagnosis and evaluation of a pathologic process: the demonstration of the dynamics of blood flow within the lesion and surrounding normal tissue. Since both the lesion itself and adjacent normal tissue demonstrate characteristic findings in each circulatory phase, the study provides a large amount of data on the flow of blood and contrast material which facilitate both recognition and diiferentation of a lesion. Late studies following administration of a contrast agent allow an estimate of the passage of the contrast medium to the inter stitium, which is of diagnostic importance. Chapters dealing with specific clinical entities also contain useful information on the most appropriate means of contrast agent administration (bolus injection or infusion) as well as a discussion of indications for the procedure. Dynamic computed tomography represents a significant advance over conventional computed tomography in some situations, and this signifies a major contri bution to the diagnostic capabilities of the clinical radiologist. The authors are to be commended for the fact that they have clearly defined the limits of dynamic computed tomography. I hope that the first English language edition, following the appea rance of the German version in 1983, will be well received.
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Basic Principles and Clinical Applications
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Basic Principles and Clinical Applications
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Content
1 Introduction.- 2 Basic Physical Principles and Technical Considerations.- 2.1 Attenuation Coefficients.- 2.2 Mathematical Picture Reconstruction.- 2.3 Attenuation Values and Visual Displays.- 2.4 Criteria of Picture Quality.- 2.5 Spatial Resolution and Discrimination at High Contrast Levels.- 2.6 Spatial Resolution at Low Contrast Levels.- 2.7 Contrast Detail Diagrams.- 2.8 Artifacts.- 2.9 Beam Hardening.- 2.10 Partial Volume Effect.- 2.11 Radiation Dose.- 3 Dynamic Computed Tomography.- 3.1 Technical Considerations.- 3.2 Scan Splitting.- 3.3 Time-Density Measurements.- 3.4 ECG-Triggered Cardiac CT Studies.- 3.5 Serial Digital Radiography.- 3.6 Radiation Dose.- 3.7 Future Developments.- 3.8 Examination Techniques and Evaluation.- 4 Contrast Media.- 4.1 Types of Contrast Media.- 4.2 Chemical Structure of Water-Soluble Contrast Media.- 4.3 Physical and Chemical Characteristics of Contrast Media.- 4.4 Physiologic Aspects of Contrast Media Distribution.- 4.5 Pharmacokinetics.- 4.6 Application of Contrast Media..- 4.7 Side effects.- 5 Bolus Geometry and Dynamics: Contrast Studies with Intravenous Contrast Media.- 5.1 Dosage.- 5.2 Types of Contrast Media.- 6 Clinical Applications of Dynamic Computed Tomography.- 6.1 Vascular Studies.- 6.1.1 Aortic Aneurysm.- 6.1.2 Thrombosis.- 6.2 Heart.- 6.2.1 Myocardial Infarction.- 6.2.2 Ventricular Aneurysm.- 6.2.3 Intracavitary Space-Occupying Lesions: Thrombi and Tumors.- 6.2.4 Aortocoronary Bypass Grafts..- 6.2.5 Pericardial Disease.- 6.2.6 Critical Evaluation.- 6.3 Lungs and Mediastinum.- 6.3.1 Vascular Studies.- 6.3.2 Vascular Anomalies and Tumors in the Mediastinum.- 6.3.3 Pulmonary and Pleural Tumors.- 6.3.4 Critical Evaluation.- 6.4 Experimental Hepatic Neoplasms.- 6.5 Liver..- 6.5.1 Vascular Studies.- 6.5.2 Space-Occupying Lesions.- 6.5.2.1 Malignant Space-Occupying Lesions.- 6.5.2.2 Benign Hepatic Lesions.- 6.5.2.3 Miscellaneous Liver Lesions.- 6.5.2.4 Critical Evaluation.- 6.6 Pancreas.- 6.6.1 Acute Pancreatitis.- 6.6.2 Chronic Pancreatitis.- 6.6.3 Pancreatic Neoplasms.- 6.6.4 Critical Evaluation.- 6.7 Spleen.- 6.7.1 Vascular Studies.- 6.7.2 Pathologie Findings.- 6.7.3 Critical Evaluation.- 6.8 Retroperitoneal Space.- 6.8.1 Kidneys.- 6.8.1.1 Benign Renal Tumors.- 6.8.1.2 Renal Transplantation.- 6.8.1.3 Renal Carcinoma.- 6.8.1.4 Miscellaneous Renal Lesions.- 6.8.1.5 Critical Evaluation.- 6.8.2 Adrenal Glands.- 6.8.3 Other Retroperitoneal Space-Occupying Lesions.- 6.9 Gastrointestinal Tract.- 6.10 Intra-abdominal Abscess.- 6.11 Pelvic Lesions.- 6.11.1 Neoplasms of the Prostate and the Bladder.- 6.11.2 Gynecologic Disease.- 6.11.3 Critical Evaluation.- 6.12 Soft Tissue Lesions.- 6.13 Cranial Computed Tomography.- 6.13.1 Normal Regional Circulation.- 6.13.2 Vascular Studies.- 6.13.3 Vascular Stenosis and Infarction.- 6.13.4 Tumors and Brain Edema.- 6.13.5 Blood Volume and Circulation.- 6.13.6 Critical Evaluation.- 6.14 Orbits.- 6.14.1 Normal Findings with Contrast Media.- 6.14.2 Pathologic Findings.- 6.14.3 Critical Evaluation.- 6.15 Face and Neck.- 6.15.1 Vascular Studies.- 6.15.2 Tumors.- 6.15.3 Critical Evaluation.- 7 Summary.- References.