Which additional technique is included alongside color imaging to evaluate tissue properties in the diagnostic protocol?

Which additional technique is included alongside color imaging to evaluate tissue properties in the diagnostic protocol?

• A. Elastography
• B. Fremitus
• C. Contrast-enhanced ultrasound
• D. Nuclear medicine study

Answer: (A)

Elastography adds a measure of tissue stiffness to standard color imaging, giving a mechanical property that helps distinguish benign from malignant areas. In ultrasound, color imaging shows structure and blood flow, while elastography assesses how hard or soft the tissue is. Since malignant tumors tend to be stiffer, elastography provides complementary information that improves lesion characterization and can reduce unnecessary biopsies. There are two common forms: strain elastography, which evaluates relative stiffness from manual or acoustic compression, and shear-wave elastography, which gives a quantitative stiffness value. The other options don’t fit this use. Fremitus is a clinical palpation sign, not an imaging technique. Contrast-enhanced ultrasound looks at perfusion using a contrast agent, not tissue stiffness. Nuclear medicine studies track metabolic activity or tracer uptake, which is a different functional assessment entirely.

Elastography adds a measure of tissue stiffness to standard color imaging, giving a mechanical property that helps distinguish benign from malignant areas. In ultrasound, color imaging shows structure and blood flow, while elastography assesses how hard or soft the tissue is. Since malignant tumors tend to be stiffer, elastography provides complementary information that improves lesion characterization and can reduce unnecessary biopsies. There are two common forms: strain elastography, which evaluates relative stiffness from manual or acoustic compression, and shear-wave elastography, which gives a quantitative stiffness value.

The other options don’t fit this use. Fremitus is a clinical palpation sign, not an imaging technique. Contrast-enhanced ultrasound looks at perfusion using a contrast agent, not tissue stiffness. Nuclear medicine studies track metabolic activity or tracer uptake, which is a different functional assessment entirely.