Initial experiences with MR Image-guided laparoscopic microwave coagulation therapy for hepatic tumors

Murakami, Kayo; Naka, Shigeyuki; Shiomi, Hiroya; Akabori, Hiroya; Kurumi, Yoshimasa; Morikawa, Shigehiro; Tani, Tohru

doi:10.1007/s00595-014-1042-x

Cited by 12 publications

(10 citation statements)

References 27 publications

(41 reference statements)

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“…1.0T open low-eld magnets [15][16][17][18][19][20][21] (Table 5). Theoretically, soft tissue resolution is higher in eld strengths >1.…”

Section: Discussionmentioning

confidence: 99%

2450 MHz Microwave Ablation for Liver Metastases Under 3.0T Wide-bore Magnetic Resonance Guidance: a Pilot Study

Liu

et al. 2021

Preprint

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Purpose: To investigate the feasibility and effectiveness of 3.0T wide-bore magnetic resonance (MR)-guided microwave ablation (MA) for liver metastases (LM).Patients and methods: From October 2018 to May 2020, 39 patients with 63 LM were treated with 3.0T wide-bore MR-guided 2450 MHz MA therapy. The procedure parameters, technical success, complications, biochemical indexes changes, local tumor response, local tumor progression (LTP) and overall survival were recorded and analyzed.Results: The mean tumor maximum diameter and total procedure time were 3.0 cm and 55.2 min, respectively. Technical success was 100% but 5 cases (12.8%) with grade-1 complications. Alanine transaminase, aspartate transaminase and total bilirubin showed slight a transient increase on day 3 (P<0.05) and returned to normal by day 30 (P>0.05). The complete ablation rate for ≦ 2.5 and >2.5 cm lesions were 100 % and 92.5 %, respectively, during the median followup of 12.0 months, LTP rate was 4.8 % (3/63), and the 6-, 12- and 18-month overall survival were 100%, 92.2%, 76.4% , respectively.Conclusion: 3.0T wide-bore MR-guided MA for LM is a safe and effective approach, especially for small LM.

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“…1.0T open low-eld magnets [15][16][17][18][19][20][21] (Table 5). Theoretically, soft tissue resolution is higher in eld strengths >1.…”

Section: Discussionmentioning

confidence: 99%

2450 MHz Microwave Ablation for Liver Metastases Under 3.0T Wide-bore Magnetic Resonance Guidance: a Pilot Study

Liu

et al. 2021

Preprint

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“…Yan Shi Yan et al [22] compared the treatment of real-time contrast-enhanced ultrasound with that of standard ultrasound, and the real-time contrast-enhanced ultrasound under laparoscope is more accurate in positioning liver lesions. There are also some scholars who use MRI [23], PET-MRI [24], robot guided [25] to locate the focus for treatment, but the clinical application is not extensive. Wu Wenbo et al [26] use the biological simulator to simulate the human body so that the surgeon can carry out surgery practice, which can not only enable the surgeon to understand the operation scheme for surgery simulation, but also shorten the learning curve.…”

Section: The Application Of Microwave Ablation Undermentioning

confidence: 99%

The Application of Laparoscopic B-Ultrasound Microwave Ablation Technology in Liver Metastasis of Colorectal Cancer

Zhou¹,

Liu²

2020

IJCM

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Liver is the most common metastasis target organ in the late stage of colorectal cancer. More than 50% of colorectal cancer patients will have simultaneous or heterochronous liver metastasis. The survival time of patients with colorectal cancer and liver metastasis (CRLM) is short; not all patients can get radical resection of liver metastasis. For this part of patients, microwave ablation technology has been proved to be one of the effective methods for the treatment of liver metastasis. Laparoscopic B-ultrasound ablation also highlights a lot of minimally invasive advantages; this paper reviews the relevant literature of PubMed database, Wanfang database and CNKI database, in order to provide the treatment basis for clinical application of microwave ablation technology under laparoscopic B-ultrasound in the treatment of CRLM. The results showed that the safety and effectiveness of microwave ablation for liver metastases under the location of B-ultrasonic laparoscopy were confirmed, and patients with liver metastases of colorectal cancer who could not be resected could choose this treatment.

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“…Magnetic resonance imaging (MRI) is a promising guiding method for MWA, with the advantages of arbitrary direction imaging, high tissue resolution, and unique temperature sensitivity [9][10][11]. However, general MWA systems are not compatible with MRI, and only a few institutes perform MRI-guided MWA [9,10]. The objective of the present study was to evaluate the feasibility of MRI-guided and monitored ablation of hepatic malignant tumors using a MRI compatible MWA system.…”

Section: Introductionmentioning

confidence: 99%

Microwave ablation of hepatic malignant tumors using 1.5T MRI guidance and monitoring: feasibility and preliminary clinical experience

Lin

Chen

Yuan

et al. 2019

International Journal of Hyperthermia

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Purpose: To evaluate the feasibility and therapeutic efficacy of 1.5-T MRI-guided and monitored microwave ablation in patients with hepatic malignant tumors. Materials and Methods: This retrospective study was approved by the ethics committee of the First Affiliated Hospital of Fujian Medical University. Thirty-five patients (32 men, three women) with 48 lesions (maximum diameter < 3 cm) underwent microwave ablation under the guidance and monitoring of a 1.5-T MRI. The MRI-compatible microwave generator was appended with a magnetic shield case, and the cable was combined with a choke coil for shielding the Larmor processing frequency. The average age of the patients was 56.51 ± 11.36 years (31-77 years). Twenty-eight patients (37 lesions) displayed hepatocellular carcinoma and seven patients (11 lesions) had metastatic liver carcinoma. The mean maximum tumor diameter was 12.31 ± 4.72 mm (range 5.0-25.7 mm). Results: MRI scans were performed simultaneously without electromagnetic interference during ablation. The average maximum diameter of the hypointense zone of the last monitored T2WI sequence, hypointense zone of post-procedure T2WI sequence, and hyperintense zone of post-procedure T1WI were 28.82 ± 7.58 mm, 29.79 ± 7.91 mm, and 28.28 ± 8.37 mm, respectively, with no observed statistical difference (F ¼ 0.434, p ¼ .649). The technical success rate was 100%. The average follow-up duration was 11.43 ± 5.29 (4-33) months. The technique efficacy rate was 100%. Conclusion: MRI-guided and monitored microwave ablation of hepatic malignant tumors is feasible and potentially safe and effective. KEY POINTS 1. MRI-guided microwave ablation of hepatic malignant tumors is feasible. 2. The MRI monitoring scan could accurately reflect the scope of ablation lesion. 3. On T1WI, the ablation lesions of liver showed the 'target sign'.

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Initial experiences with MR Image-guided laparoscopic microwave coagulation therapy for hepatic tumors

Cited by 12 publications

References 27 publications

2450 MHz Microwave Ablation for Liver Metastases Under 3.0T Wide-bore Magnetic Resonance Guidance: a Pilot Study

2450 MHz Microwave Ablation for Liver Metastases Under 3.0T Wide-bore Magnetic Resonance Guidance: a Pilot Study

The Application of Laparoscopic B-Ultrasound Microwave Ablation Technology in Liver Metastasis of Colorectal Cancer

Microwave ablation of hepatic malignant tumors using 1.5T MRI guidance and monitoring: feasibility and preliminary clinical experience

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