Percutaneous Radiofrequency Ablation of Sonographically Unidentifiable Liver Tumors
| Autor: | K. Ueshima, Tatsuo Inoue, Shunsuke Takahashi, Taisuke Ueda, Masatoshi Kudo, Toyokazu Fukunaga, Hitoshi Shiozaki, Yasunori Minami, Kinuyo Hatanaka, Satoshi Kitai, Hitoshi Hagiwara, Hobyung Chung |
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| Rok vydání: | 2007 |
| Předmět: |
Cancer Research
medicine.medical_specialty Liver tumor Percutaneous medicine.diagnostic_test business.industry Radiofrequency ablation medicine.medical_treatment ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Follow up studies Computed tomography Catheter ablation General Medicine medicine.disease law.invention Tomography x ray computed Oncology law medicine Radiology Tomography business |
| Zdroj: | Oncology. 72:111-116 |
| ISSN: | 1423-0232 0030-2414 |
| Popis: | Objective: The purpose of this study was to evaluate the safety and feasibility of a real-time integrated system with computed tomography (CT) and sonographic images for radiofrequency (RF) ablation of hepatic malignancies poorly defined on B-mode sonography, and to clarify the suitable phase of CT images for using this virtual sonography. Methods: Between September 2004 and December 2004, 12 patients with 16 hepatocellular carcinomas and two metastatic lesions arising from colorectal adenocarcinoma (n = 1) and rectal carcinoid (n = 1) were treated. The maximum diameter of nodules ranged from 1.0 to 2.5 cm (mean ± SD; 1.5 ± 0.6 cm) on CT images. Results: Complete tumor necrosis was achieved in a single session in 19 lesions (90%), while a second session was required for the remaining two lesions (10%). Portal phase multi-planar reconstruction images were displayed under a suitable position corresponding to the ultrasound images in 9 patients (HCC = 7, metastasis = 2), and arterial phase multi-planar reconstruction images were displayed in the 3 remaining patients with hepatocellular carcinoma. Conclusion: Percutaneous RF ablation guidance using virtual sonography is an effective treatment for patients with hepatic malignancies. The portal phase of CT images may be the most suitable to indicate the 3-dimensional relationship between the liver vasculature and tumors on virtual sonography. |
| Databáze: | OpenAIRE |
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