Contrast-enhanced ultrasonography: advance and current status in abdominal imaging
Ultrasonography
; : 3-18, 2015.
Article
in En
| WPRIM
| ID: wpr-731119
Responsible library:
WPRO
ABSTRACT
In the field of contrast-enhanced ultrasonography (US), contrast agents are classified as either first- or second-generation agents depending on the gas within the microbubbles. In the case of first-generation contrast agents, a high-mechanical-index technique is used and only intermittent scanning is possible due to the early destruction of the microbubbles during the scanning. The use of second-generation contrast agents in a low-mechanical-index technique enables continuous scanning. Besides the detection and characterization of focal liver lesions, contrast-enhanced US is helpful in the monitoring of radiofrequency ablation therapy and in the targeting step of an US-guided biopsy. Recently, there has been a demand for new criteria to evaluate the treatment response obtained using anti-angiogenic agents because morphologic criteria alone may not reflect the treatment response of the tumor and contrast-enhanced US can provide quantitative markers of tissue perfusion. In spite of the concerns related to its cost-effectiveness, contrast-enhanced US has the potential to be more widely used as a complimentary tool or to substitute the current imaging modalities in some occasions.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Perfusion
/
Biopsy
/
Image Enhancement
/
Ultrasonography
/
Catheter Ablation
/
Contrast Media
/
Microbubbles
/
Abdomen
/
Liver
Type of study:
Diagnostic_studies
Language:
En
Journal:
Ultrasonography
Year:
2015
Type:
Article