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[Minimally invasive therapy under image guidance--emphasizing MRI-guided cryotherapy]
1Department of Radiology, Jikei University, Kashiwa Hospital, Kashiwa 277-8567.
Rinsho Byori. the Japanese Journal of Clinical Pathology
|March 19, 2004
Summary
Cryotherapy effectively destroys cancerous tumors in the kidney and liver while preserving healthy tissue. Magnetic Resonance (MR) imaging accurately guided this minimally invasive treatment, showing excellent patient outcomes.
Area of Science:
- Oncology
- Medical Imaging
- Minimally Invasive Procedures
Context:
- Cryotherapy offers a minimally invasive approach for localized cancer treatment.
- Preserving surrounding healthy tissue is a key challenge in focal cancer destruction.
- Accurate monitoring is crucial for effective cryotherapy application.
Purpose:
- To evaluate the efficacy and safety of MR-guided cryotherapy for renal and hepatic malignancies.
- To assess the role of MR imaging in monitoring cryotherapy-induced iceball formation.
Summary:
- Cryotherapy utilizes intracellular ice formation, cellular dehydration, and microcirculation stagnation to destroy cancerous tissue.
- MR imaging proved superior to CT and ultrasound for monitoring cryotherapy due to the excellent contrast of ice.
- A fast Joule-Thomson cryocycling device enabled MR-compatible cryotherapy, with clinical trials conducted using a horizontal open MR system.
- In 18 cases (14 renal, 4 hepatic), MR-guided cryotherapy resulted in tumor resolution with no serious complications and rapid patient discharge.
Impact:
- MR-guided cryotherapy demonstrates a safe and effective treatment option for renal and hepatic tumors.
- The study highlights the critical role of MR imaging in real-time monitoring and guidance of cryotherapy.
- This technique allows for precise tumor ablation, minimizing damage to adjacent healthy tissues and reducing recovery time.