Ultrasonography refers to a procedure where a focused beam of high-frequency sound waves passes into the body, creating echoes that vary with changes in tissue density.
When echoes are converted to electric energy and amplified by a transducer, they appear on an oscilloscope screen as a pattern of spikes or dots. This pattern reveals the size, shape, and position of an organ.
Indications for Ultrasonography
- Confirm the diagnosis e.g cholelithiasis
- Distinguish between obstructive and non-obstructive jaundice
- Screen for hepato-cellular disease
- Detect hepatic metastasis and hematoma
- Define cold spots as tumors, abscess, or cyst
- Demonstrate splenomegaly
- Monitor progression of the primary and secondary splenic disease and to eviled effectiveness of therapy
- Evaluate spleen after abdominal trauma
- Aid in diagnosis of pancreatitis, pseudocyst, and pancreatic carcinoma
- Determine the size, shape, and position of kidneys, their internal structure, and perennial tissues
- Evaluate and localize Urinary obstruction and abnormal accumulation of fluid
- Assess and diagnose complications following kidney transplantation
- Evaluate thyroid structure
- Monitor the size of the thyroid gland during suppressive therapy
- Evaluate fetal viability, position, gestational age, and growth rate
Related Topic (Indications, Patient Preparation, Equipment, Post-Procedure):
Magnetic, Resonance Imaging (MRI)
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