title: The safety and feasibility of extracorporeal high-intensity focused ultrasound (HIFU) for the treatment of liver and kidney tumours in a Western population.
abstract: High-intensity focused ultrasound (HIFU) provides a potential noninvasive alternative to conventional therapies. We report our preliminary experience from clinical trials designed to evaluate the safety and feasibility of a novel, extracorporeal HIFU device for the treatment of liver and kidney tumours in a Western population. The extracorporeal, ultrasound-guided Model-JC Tumor Therapy System (HAIFU Technology Company, China) has been used to treat 30 patients according to four trial protocols. Patients with hepatic or renal tumours underwent a single therapeutic HIFU session under general anaesthesia. Magnetic resonance imaging 12 days after treatment provided assessment of response. The patients were subdivided into those followed up with further imaging alone or those undergoing surgical resection of their tumours, which enabled both radiological and histological assessment. HIFU exposure resulted in discrete zones of ablation in 25 of 27 evaluable patients (93%). Ablation of liver tumours was achieved more consistently than for kidney tumours (100 vs 67%, assessed radiologically). The adverse event profile was favourable when compared to more invasive techniques. HIFU treatment of liver and kidney tumours in a Western population is both safe and feasible. These findings have significant implications for future noninvasive image-guided tumour ablation.
authors.affiliation: HIFU Unit, Churchill Hospital, Oxford OX3 7LJ, UK, and Clinical Center for Tumor Therapy, Chongqing University of Medical Sciences, People's Republic of China. rowland@doctors.org.uk
authors.forename: R O
authors.initials: RO
authors.lastname: Illing
authors.forename: J E
authors.initials: JE
authors.lastname: Kennedy
authors.forename: F
authors.initials: F
authors.lastname: Wu
authors.forename: G R
authors.initials: GR
authors.lastname: ter Haar
authors.forename: A S
authors.initials: AS
authors.lastname: Protheroe
authors.forename: P J
authors.initials: PJ
authors.lastname: Friend
authors.forename: F V
authors.initials: FV
authors.lastname: Gleeson
authors.forename: D W
authors.initials: DW
authors.lastname: Cranston
authors.forename: R R
authors.initials: RR
authors.lastname: Phillips
authors.forename: M R
authors.initials: MR
authors.lastname: Middleton
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000628:therapy*; D008113:Liver Neoplasms / Q000628:therapy*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D014464:Ultrasonic Therapy / Q000009:adverse effects / Q000379:methods*