Heating characteristics of coaxial-slot antennas for minimally invasive microwave thermal therapy

Author(s):  
Koichi Ito ◽  
Hiroyuki Yoshimura ◽  
Kazuyuki Saito ◽  
Lira Hamada
2018 ◽  
Vol 45 (3) ◽  
pp. E9 ◽  
Author(s):  
Zulma Tovar-Spinoza ◽  
Robert Ziechmann ◽  
Stephanie Zyck

OBJECTIVEMagnetic resonance–guided laser interstitial thermal therapy (MRgLITT) is a novel, minimally invasive treatment for the surgical treatment of epilepsy. In this paper, the authors report on clinical outcomes for a series of pediatric patients with tuberous sclerosis complex (TSC) and medication-refractory epileptogenic cortical tubers.METHODSA retrospective chart review was performed at SUNY Upstate Golisano Children’s Hospital in Syracuse, New York. The authors included all cases involving pediatric patients (< 18 years) who underwent MRgLITT for ablation of epileptogenic cortical tubers between February 2013 and November 2015.RESULTSSeven patients with cortical tubers were treated (4 female and 3 male). The patients’ average age was 6.6 years (range 2–17 years). Two patients had a single procedure, and 5 patients had staged procedures. The mean time between procedures in the staged cases was 6 months. All of the patients had a meaningful reduction in seizure frequency as reported by Engel and ILAE seizure outcome classifications, and most (71.4%) of the patients experienced a reduction in AED burden. Three of the 4 patients who presented with neuropsychiatric symptoms had some improvement in these domains after laser ablation. No perioperative complications were noted. The mean duration of follow-up was 19.3 months (range 4–49 months).CONCLUSIONSLaser ablation represents a minimally invasive alternative to resective epilepsy surgery and is an effective treatment for refractory epilepsy due to cortical tubers.


Biomaterials ◽  
2015 ◽  
Vol 44 ◽  
pp. 91-102 ◽  
Author(s):  
Haitang Shi ◽  
Tianlong Liu ◽  
Changhui Fu ◽  
Linlin Li ◽  
Longfei Tan ◽  
...  

2001 ◽  
Author(s):  
Chris J. Diederich ◽  
R. Jason Stafford ◽  
Roger E. Price ◽  
William H. Nau ◽  
Per Daniel Tyreus ◽  
...  

2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Jason L. Schroeder ◽  
Symeon Missios ◽  
Gene H. Barnett ◽  
Alireza Mohammad Mohammadi

AbstractIntroduction:Deep-seated hemispheric brain tumors pose unique challenges for surgical treatment. These tumors are often considered inoperable and when surgery is undertaken significant, serious, morbidity and even mortality may complicate the outcome. Laser interstitial thermal therapy (LITT) is a minimally invasive alternative to traditional open surgery that affects tumor cell death by producing a zone of thermal tissue damage that can be monitored and controlled with the aid of real-time magnetic resonance thermography.Subjects and methods:A retrospective review of six patients treated with LITT at the Cleveland Clinic between 5/2011 and 8/2013 was performed. We evaluated clinical patient data and pre-, intra-, and post-operative magnetic resonance imaging (MRI) data for correlation.Results:Six patients were treated with a total of eight separate LITT procedures for their thalamic (n=5) or basal ganglia (n=1) tumors. All tumors were histologically malignant and five were primary tumors. Pre- and post-operative neurological deficits were recorded. The two patients that underwent multiple procedures were retreated for different reasons – one due to insufficient coverage and the other due to tumor recurrence. Sustained post-operative neurological deficits were observed after three procedures and one patient died within 2 days of surgery from a thalamic hemorrhage.Conclusions:LITT is a minimally invasive surgical treatment that can lead to successful ablation of tumors of the thalamus or basal ganglia. However, this treatment has the potential for neurological morbidity or even mortality and as such further studies are needed to evaluate the true risk vs. reward potential for LITT with regard to treating deep-seated tumors.


2018 ◽  
Vol 44 (videosuppl2) ◽  
pp. V3 ◽  
Author(s):  
Nelson Moussazadeh ◽  
Linton T. Evans ◽  
Roxana Grasu ◽  
Laurence D. Rhines ◽  
Claudio E. Tatsui

Spinal laser interstitial thermal therapy has been developed as a minimally invasive modality to treat epidural spinal tumors percutaneously. The safe and effective use of this technology requires meticulous preoperative trajectory planning and an intraoperative workflow incorporating navigation and MR thermography. Instrumented stabilization can be performed during the same operation if needed. Operative considerations and technical aspects are reviewed.The video can be found here: https://youtu.be/P--frsag6gU.


2021 ◽  
Author(s):  
Elham Soleimankhani ◽  
Michael C. Kolios

Transmission Ultrasound to guide Minimally Invasive Thermal Therapy


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