Applications and limitations of diagnostic imaging

Type :

Presentation

Slides :

58 slides

Format :

.ppt

Published date :

07/07/2009

Category :

Science & technology

Sub category :

Medical studies

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Summary :

Introduction
Radiographic techniques
Ultrasound
Computed tomography
Magenetic resonance imaging
Nuclear imaging and positron emission tomography
Angiography and interventional radiology
Principles of ordering imaging tests
Expenses of imaging procedures
Screening
Imaging approach to selected common clinical problems
Shortness of breath
Solitary pulmonary nodule
Acute renal failure
Hematuria with flank pain
Staging of oncologic dieseases
Adrenal gland
Digital image storage and teleradiology
Conclusions
Bibliography

Abstract

The traditional evaluation of the patient includes the history and physical examination and a well-planned set of diagnostic tests, often including imaging. Dramatic advances in imaging not only supplement the physical examination, but also now may begin to substitute for part of it. Medical imaging provides an approach for dividing patients into patients who have an acute compared with a chronic medical problem and patients who have an anatomic compared with a "biochemical" illness. These determinations are crucial for prompt and effective medical and surgical therapy. A key issue for clinicians is determining the appropriate role for imaging in a patient. Ultrasonography is highly accurate for the diagnosis of cholelithiasis, but it is less clear how to decide when a patient with right upper quadrant pain needs ultrasonography, computed tomography (CT), an upper gastrointestinal radiographic series , endoscopy , or no imaging study whatsoever. Optimum choices among the armamentarium of tests guide efficient and cost-effective care.