Use of Indirect Target Gating in Magnetic Resonance-guided Liver Stereotactic Body Radiotherapy: Case Report of an Oligometastatic Patient
- Resource Type
- Authors
- Giuditta Chiloiro; Gian Carlo Mattiucci; Luca Boldrini; Anna Maria De Gaetano; Francesco Cellini; Luigi Azario; Davide Cusumano; Bruno Fionda; S. Teodoli; Vincenzo Valentini; Stefania Manfrida
- Source
- Cureus
- Subject
- 0301 basic medicine
Breathing control
medicine.medical_specialty
oligometastatic
Radiotherapy unit
gating
igrt
liver sbrt
mr guided radiotherapy
sbrt
Healthcare Technology
Gating
03 medical and health sciences
0302 clinical medicine
Medicine
Settore MED/36 - DIAGNOSTICA PER IMMAGINI E RADIOTERAPIA
Image-guided radiation therapy
medicine.diagnostic_test
business.industry
General Engineering
Magnetic resonance imaging
medicine.disease
Primary tumor
030104 developmental biology
Oncology
030220 oncology & carcinogenesis
Concomitant
Radiation Oncology
Radiology
business
Stereotactic body radiotherapy
- Language
- ISSN
- 2168-8184
The case of a 73-year-old woman affected by anal canal cancer with concomitant liver metastases is presented here. The patient was addressed to stereotactic body radiotherapy (SBRT) on two hepatic secondary lesions after the first radiochemotherapy treatment of the primary tumor. A Tri-60-Co magnetic resonance hybrid radiotherapy unit was used for SBRT treatment delivery. Both liver lesions were not clearly visible on the setup magnetic resonance imaging (MRI) due to their limited dimensions (maximum diameter 13 mm); however, the presence of two cysts adjacent to the metastases allowed the use of an indirect target gating approach. Treatment was delivered in deep inspiration breath-hold conditions using the visual feedback technique for breathing control optimization. Post radiotherapy imaging assessed the complete response.