Serial changes in sonographic appearance after transcatheter hepatic arterial embolization

Area of Science:

• Radiology
• Hepatobiliary Imaging
• Interventional Radiology

Background:

• Transcatheter arterial embolization (TAE) is a common treatment for liver tumors.
• Assessing treatment response is crucial for patient management.
• Sonographic monitoring offers a non-invasive method to evaluate TAE effectiveness.

Purpose of the Study:

• To investigate serial sonographic changes following TAE in patients with liver tumors.
• To correlate these sonographic changes with the effectiveness of TAE.

Main Methods:

• Retrospective analysis of sonographic findings in 23 patients (22 hepatoma, 1 hepatoblastoma) post-TAE.
• Classification of sonographic changes into three types based on echogenicity and acoustic shadows.
• Correlation of sonographic change types with TAE effectiveness.

Main Results:

• Type 1: Entire tumor became echogenic (small tumors <4.9 cm).
• Type 2: Scattered echogenic areas observed (various tumor sizes).
• Type 3: No sonographic changes observed (various tumor sizes).
• TAE was effective in 89% of Type 1 and Type 2 cases.
• TAE was ineffective in 75% of Type 3 cases.

Conclusions:

• Sonographic appearance changes after TAE correlate well with treatment effectiveness.
• Echogenic patterns (Type 1 and 2) suggest successful embolization.
• Lack of sonographic change (Type 3) indicates TAE ineffectiveness.