Hepatocellular carcinoma: microwave ablation with multiple straight and loop antenna clusters--pilot comparison with pathologic findings.
The purpose of this study was to evaluate the clinical implementation of triangular and spherical designs for simultaneous multiple-antenna ablation of human hepatocellular carcinoma (HCC) with a recently engineered microwave coagulation system. Institutional review board approval and informed consent were obtained, and the study was compliant with HIPAA requirements. Nine patients (five men, four women; age range, 53-79 years; mean age, 66.2 years) with resectable HCC (diameter, 2.9-6.0 cm; mean, 4.2 cm) underwent intraoperative ultrasonography-guided tumor ablation followed by resection and pathologic examination. Standard single-straight (n = 2), triangular triple-straight (n = 4), and spherical triple-loop (n = 3) antenna configurations produced mean estimated coagulation volumes of 16.7, 51.7, and 54.3 cm(3), respectively, during a single concurrent 5-10-minute ablation cycle. The triple-loop configuration yielded the most uniformly round ablation shape. Simultaneous activation of multiple straight or loop antennae is a potentially promising technique for rapid and effective treatment of large HCCs.
Departments of Radiological Sciences, Pathology, and Surgery, David Geffen School of Medicine at UCLA, BR-158 CHS, Box 951721, 10833 Le Conte Ave, Los Angeles, CA 90095-1721, USA.
Nam C
NC
Yu
David S K
DS
Lu
Steven S
SS
Raman
Damian E
DE
Dupuy
Caroline J
CJ
Simon
Charles
C
Lassman
Bassam I
BI
Aswad
David
D
Ianniti
Ronald W
RW
Busuttil
D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000473:pathology* / Q000628:therapy*; D003972:Diathermy / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology* / Q000628:therapy*; D008297:Male; D008872:Microwaves / Q000627:therapeutic use*; D008875:Middle Aged; D010865:Pilot Projects