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MRI-guided HIFU

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https://www.readbyqxmd.com/read/29091474/pilot-study-safety-and-effectiveness-of-simple-ultrasound-guided-high-intensity-focused-ultrasound-ablating-uterine-leiomyoma-with-a-diameter-greater-than-10cm
#1
Ruijie Hou, Liwei Wang, Shaoping Li, Fengmin Rong, Yuanyuan Wang, Xuena Qin, Shijin Wang
PURPOSE: The study aimed to prospectively investigate whether uterine leiomyoma greater than 10 cm in diameter could be treated with simple ultrasound-guided high-intensity focused ultrasound (USgHIFU) in one-time treatment. MATERIALS AND METHODS: A total of 36 patients with 36 symptomatic uterine leiomyoma greater than 10 cm in diameter who underwent simple USgHIFU treatment alone were analyzed. Enhanced magnetic resonance imaging (MRI) was performed before and after HIFU treatment, and all patients had follow-up for 6 months after treatment...
November 1, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29065623/segmentation-method-for-magnetic-resonance-guided-high-intensity-focused-ultrasound-therapy-planning
#2
A Vargas-Olivares, O Navarro-Hinojosa, M Maqueo-Vicencio, L Curiel, M Alencastre-Miranda, J E Chong-Quero
High-intensity focused ultrasound (HIFU) is a minimally invasive therapy modality in which ultrasound beams are concentrated at a focal region, producing a rise of temperature and selective ablation within the focal volume and leaving surrounding tissues intact. HIFU has been proposed for the safe ablation of both malignant and benign tissues and as an agent for drug delivery. Magnetic resonance imaging (MRI) has been proposed as guidance and monitoring method for the therapy. The identification of regions of interest is a crucial procedure in HIFU therapy planning...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29057436/non-invasive-therapeutic-use-of-high-intensity-focused-ultrasound-hifu-with-3-tesla-magnetic-resonance-imaging-in-women-with-symptomatic-uterine-fibroids
#3
Tomasz Łoziński, Justyna Filipowska, Grzegorz Gurynowicz, Iwona Gabriel, Artur Czekierdowski
Benign uterine fibroids are common female genital tract tumors and if symptomatic often require extensive surgery. When tumors are multiple and large or unusually located, the operative treatment may lead to significant morbidity and compromise quality of life. Recovery period after surgical treatment may be complicated by patient's medical condition and wound healing problems. Currently used other non-surgical treatment modalities usually provide only a temporal symptoms relief and may not be efficient in all affected women...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28944490/hybrid-ultrasound-mr-guided-hifu-treatment-method-with-3d-motion-compensation
#4
Zarko Celicanin, Gibran Manasseh, Lorena Petrusca, Klaus Scheffler, Vincent Auboiroux, Lindsey A Crowe, Jean-Noel Hyacinthe, Yutaka Natsuaki, Francesco Santini, Christoph D Becker, Sylvain Terraz, Oliver Bieri, Rares Salomir
PURPOSE: Treatments using high-intensity focused ultrasound (HIFU) in the abdominal region remain challenging as a result of respiratory organ motion. A novel method is described here to achieve 3D motion-compensated ultrasound (US) MR-guided HIFU therapy using simultaneous ultrasound and MRI. METHODS: A truly hybrid US-MR-guided HIFU method was used to plan and control the treatment. Two-dimensional ultrasound was used in real time to enable tracking of the motion in the coronal plane, whereas an MR pencil-beam navigator was used to detect anterior-posterior motion...
September 24, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28927782/development-and-internal-validation-of-prediction-models-for-biochemical-failure-and-composite-failure-after-focal-salvage-high-intensity-focused-ultrasound-for-local-radiorecurrent-prostate-cancer-presentation-of-risk-scores-for-individual-patient-prognoses
#5
Max Peters, Abi Kanthabalan, Taimur T Shah, Neil McCartan, Caroline M Moore, Manit Arya, Jochem R van der Voort van Zyp, Marinus A Moerland, Richard G Hindley, Mark Emberton, Hashim U Ahmed
PURPOSE: Patient selection for focal salvage remains difficult. Therefore, we developed and internally validated prediction models for biochemical failure (BF) and a composite endpoint (CE) following focal salvage high intensity focused ultrasound (HIFU) for radiorecurrent prostate cancer. MATERIALS AND METHODS: A prospective HIFU registry identified 150 cases (November 2006-August 2015). Recurrence was assessed with multiparametric magnetic resonance imaging (MRI) combined with template prostate mapping biopsies, targeted biopsies, or systematic transrectal ultrasound-guided biopsies...
September 15, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28856867/changes-in-anti-m%C3%A3-llerian-hormone-levels-as-a-biomarker-for-ovarian-reserve-after-ultrasound-guided-high-intensity-focused-ultrasound-treatment-of-adenomyosis-and-uterine-fibroid
#6
J-S Lee, G-Y Hong, K-H Lee, T-E Kim
OBJECTIVE: To assess the changes in antimüllerian hormone (AMH) levels after ablation for symptomatic uterine fibroids and adenomyosis using ultrasound-guided high-intensity focused ultrasound (USgHIFU). DESIGN: A prospective study. SETTING: Gynaecological department in multiple hospitals in South Korea. POPULATION: Patients with uterus fibroids and adenomyosis. METHODS: Seventy-nine women with symptomatic uterine fibroids and adenomyosis who met the inclusion criteria were enrolled in our study between January 2014 and December 2014...
August 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28856856/ultrasound-guided-high-intensity-focused-ultrasound-ablation-for-treating-uterine-arteriovenous-malformation
#7
X Yan, C Zhao, C Tian, S Wen, X He, Y Zhou
OBJECTIVE: To explore HIFU treatment for uterine arteriovenous malformation. DESIGN: A case report. SETTING: Gynaecological department in a university teaching hospital of China. POPULATION: A patient with uterine arteriovenous malformation. METHODS: The diagnosis of uterine arteriovenous malformation was made through MRI. Ultrasound-guided high-intensity focused ultrasound (USgHIFU) ablation was performed...
August 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28812002/image-guided-thermal-ablation-with-mr-based-thermometry
#8
REVIEW
Mingming Zhu, Ziqi Sun, Chin K Ng
Thermal ablation techniques such as radiofrequency, microwave, high intensity focused ultrasound (HIFU) and laser have been used as minimally invasive strategies for the treatment of variety of cancers. MR thermometry methods are readily available for monitoring thermal distribution and deposition in real time, leading to decrease of incidents of normal tissue damage around targeted lesion. HIFU and laser-induced thermal therapy (LITT) are the two widely accepted tumor ablation techniques because of their compatibility with MR systems...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28633808/impact-of-mr-guided-boiling-histotripsy-in-distinct-murine-tumor-models
#9
Martijn Hoogenboom, Dylan C Eikelenboom, Renske J E van den Bijgaart, Arend Heerschap, Pieter Wesseling, Martijn H den Brok, Jurgen J Fütterer, Gosse J Adema
Interest in mechanical high intensity focused ultrasound (HIFU) ablation is rapidly growing. Boiling histotripsy (BH) is applied for mechanical fragmentation of soft tissue into submicron fragments with limited temperature increase using the shock wave and cavitation effects of HIFU. Research on BH has been largely limited to ex vivo experiments. As a consequence, the in vivo pathology after BH treatment and the relation to preexistent tissue characteristics are not well understood. This study reports on in vivo MR guided BH treatment, either with 100 or 200 pulses per focal spot, in three different subcutaneous mouse tumor models: a soft-tissue melanoma (B16OVA), a compact growing thymoma (EL4), and a highly vascularized neuroblastoma (9464D)...
September 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28626862/acoustic-field-characterization-of-a-clinical-magnetic-resonance-guided-high-intensity-focused-ultrasound-system-inside-the-magnet-bore
#10
Satya V V N Kothapalli, Michael B Altman, Ari Partanen, Leighton Wan, H Michael Gach, William Straube, Dennis E Hallahan, Hong Chen
PURPOSE: With the expanding clinical application of magnetic resonance-guided high-intensity focused ultrasound (MR-HIFU), acoustic field characterization of MR-HIFU systems is needed for facilitating regulatory approval and ensuring consistent and safe power output of HIFU transducers. However, the established acoustic field measurement techniques typically use equipment that cannot be used in a magnetic resonance imaging (MRI) suite, thus posing a challenge to the development and execution of HIFU acoustic field characterization techniques...
June 19, 2017: Medical Physics
https://www.readbyqxmd.com/read/28616725/the-role-of-t1-perfusion-based-classification-in-magnetic-resonance-guided-high-intensity-focused-ultrasound-ablation-of-uterine-fibroids
#11
Bilgin Keserci, Nguyen Minh Duc
OBJECTIVE: To comparatively evaluate the role of magnetic resonance (MR) T1 perfusion-based time-signal intensity (SI) curves of fibroid tissue and the myometrium in classification of fibroids for predicting treatment outcomes of high-intensity focused ultrasound (HIFU) treatment. METHODS: The fibroids of 74 women who underwent MR-HIFU treatment were classified into group A (time-SI curve of fibroid lower than that of the myometrium) and group B (time-SI curve of fibroid equal to or higher than that of the myometrium)...
December 2017: European Radiology
https://www.readbyqxmd.com/read/28579687/therapeutic-ultrasound-and-prostate-cancer
#12
REVIEW
Karthik M Sundaram, Sam S Chang, David F Penson, Sandeep Arora
Therapeutic ultrasound approaches including high-intensity focused ultrasound (HIFU) are emerging as popular minimally invasive alternative treatments for localized, low-to-intermediate risk prostate cancer. FDA approval was recently granted for two ultrasound-guided HIFU devices. Clinical trials for devices using MRI guidance are ongoing. The current level of evidence for whole-gland ultrasound ablation suggests that its clinical efficacy and adverse event rates including erectile dysfunction and urinary incontinence are similar to current definitive therapies such as radical prostatectomy and external-beam radiotherapy...
June 2017: Seminars in Interventional Radiology
https://www.readbyqxmd.com/read/28540807/technical-aspects-of-osteoid-osteoma-ablation-in-children-using-mr-guided-high-intensity-focussed-ultrasound
#13
Pavel S Yarmolenko, Avinash Eranki, Ari Partanen, Haydar Celik, AeRang Kim, Matthew Oetgen, Viktoriya Beskin, Domiciano Santos, Janish Patel, Peter C W Kim, Karun Sharma
BACKGROUND: Osteoid osteoma (OO) is a painful bone tumour occurring in children and young adults. Magnetic resonance imaging-guided high intensity focussed ultrasound (MR-HIFU) allows non-invasive treatment without ionising radiation exposure, in contrast to the current standard of care treatment with radiofrequency ablation (RFA). This report describes technical aspects of MR-HIFU ablation in the first 8 paediatric OO patients treated in a safety and feasibility clinical trial (total enrolment of up to 12 patients)...
April 24, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28437003/high-intensity-focused-ultrasound-for-the-treatment-of-adenomyosis-selection-criteria-efficacy-safety-and-fertility
#14
REVIEW
Lian Zhang, Fangwen Rao, Raymond Setzen
Adenomyosis is a disorder of uterus in which endometrial glands and stroma are present within the uterine musculature. The main clinical manifestations are dysmenorrhea and menorrhagia. Adenomyosis has a great impact on both the quality of life and fertility of women. The treatment of adenomyosis remains an immense challenge. Relevant articles were searched through MEDLINE and PubMed between 2000 and March 2017. The search terms of adenomyosis, magnetic resonance imaging (MRI) features of adenomyosis, high intensity focused ultrasound (HIFU), ultrasound-guided HIFU and MRgFUS were used...
June 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28412225/enhancing-tissue-permeability-with-mri-guided-preclinical-focused-ultrasound-system-in-rabbit-muscle-from-normal-tissue-to-vx2-tumor
#15
Yao Sun, Xiaobing Xiong, Darpan Pandya, Youngkyoo Jung, Akiva Mintz, Satoru Hayasaka, Thaddeus J Wadas, King C P Li
High Intensity Focused Ultrasound (HIFU) is an emerging noninvasive, nonionizing physical energy based modality to ablate solid tumors with high power, or increase local permeability in tissues/tumors in pulsed mode with relatively low power. Compared with traditional ablative HIFU, nondestructive pulsed HIFU (pHIFU) is present in the majority of novel applications recently developed for enhancing the delivery of drugs and genes. Previous studies have demonstrated the capability of pHIFU to change tissue local permeability for enhanced drug delivery in both mouse tumors and mouse muscle...
June 28, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28256923/ultrasound-guided-high-intensity-focused-ultrasound-combined-with-gonadotropin-releasing-hormone-analogue-gnrha-ablating-uterine-leiomyoma-with-homogeneous-hyperintensity-on-t2-weighted-mr-imaging
#16
Shenghua Yang, Fanjing Kong, Ruijie Hou, Fengmei Rong, Nana Ma, Shaoping Li, Jun Yang
OBJECTIVE: The study aimed to evaluate the safety and efficiency of ultrasound-guided high-intensity focused ultrasound (USgHIFU) combined with gonadotropin-releasing hormone analogue (GnRHa)-ablating symptomatic uterine leiomyoma with homogeneous hyperintensity on T2 weighted MRI prospectively. METHODS: A total of 34 patients with 42 symptomatic uterine leiomyomas with homogeneous hyperintensity on T2 weighted MRI were enrolled in our study. In the patient who had multiple uterine leiomyomas, only one dominant leiomyoma was treated...
May 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28255351/tracking-perfluorocarbon-nanoemulsion-delivery-by-19-f-mri-for-precise-high-intensity-focused-ultrasound-tumor-ablation
#17
Soo Hyun Shin, Eun-Joo Park, Changki Min, Sun Il Choi, Soyeon Jeon, Yun-Hee Kim, Daehong Kim
Perfluorocarbon nanoemulsions (PFCNEs) have recently been undergoing rigorous study to investigate their ability to improve the therapeutic efficacy of tumor ablation by high intensity focused ultrasound (HIFU). For precise control of PFCNE delivery and thermal ablation, their accumulation and distribution in a tumor should be quantitatively analyzed. Here, we used fluorine-19 ((19)F) magnetic resonance imaging (MRI) to quantitatively track PFCNE accumulation in a tumor, and analyzed how intra-tumoral PFCNE quantities affect the therapeutic efficacy of HIFU treatment...
2017: Theranostics
https://www.readbyqxmd.com/read/28210800/preservation-of-the-endometrial-enhancement-after-magnetic-resonance-imaging-guided-high-intensity-focused-ultrasound-ablation-of-submucosal-uterine-fibroids
#18
Young-Sun Kim, Tae-Joong Kim, Hyo Keun Lim, Hyunchul Rhim, Sin-Ho Jung, Joong Hyun Ahn, Jeong-Won Lee, Byoung-Gie Kim
OBJECTIVE: To evaluate the integrity of endometrial enhancement after magnetic resonance imaging-guided high-intensity focused ultrasound (MR-HIFU) ablation of submucosal uterine fibroids based on contrast-enhanced MRI findings, and to identify the risk factors for endometrial impairment. METHODS: In total, 117 submucosal fibroids (diameter: 5.9 ± 3.0 cm) in 101 women (age: 43.6 ± 4.4 years) treated with MR-HIFU ablation were retrospectively analysed...
September 2017: European Radiology
https://www.readbyqxmd.com/read/28119893/expulsion-of-fibroids-to-the-endometrial-cavity-after-magnetic-resonance-imaging-guided-high-intensity-focused-ultrasound-surgery-mrgfus-treatment-of-intramural-uterine-fibroids
#19
Jae-Hyeok Jeong, Gil Pyo Hong, Yu-Ri Kim, Da Gyo Hong, Jae-Eun Ha, Jung In Yeom, Eun-Jeong Kim, Hyung-Il Kim, Kyu-Sup Lee
OBJECTIVES: This report seeks to introduce some cases of the patients who received magnetic resonance imaging (MRI)-guided high intensity focused ultrasound (HIFU) surgery (MRgFUS)-based intramural uterine fibroids treatment where the post-MRgFUS intramural uterine fibroids decreased in its volume and protruded towards the endometrial cavity to be expelled by hysteroscopy. METHODS: Of the 157 patients who had received MRgFUS treatment in the Obstetrics and Gynecology of the Hospital from March, 2015 to February, 2016; this study examined 6 of the cases where, after high intensity focused ultrasound treatment, intramural uterine fibroids protruded towards the endometrial cavity to be removed by hysteroscopic myomectomy...
December 2016: Journal of Menopausal Medicine
https://www.readbyqxmd.com/read/28109895/pilot-study-of-the-mirabilis-system-prototype-for-rapid-noninvasive-uterine-myoma-treatment-using-an-ultrasound-guided-volumetric-shell-ablation-technique
#20
Jessica E Parsons, Michael P H Lau, Patrick J Martin, Joel J Islas Lagos, Juan M Aguilar Aguirre, José G Garza Leal
STUDY OBJECTIVE: The primary objective of this pilot study was to evaluate the safety and acute tissue ablation efficacy of a transabdominal high-intensity focused ultrasound (HIFU) prototype device that uses ultrasound imaging guidance for rapid noninvasive ablation of uterine myomas. The secondary objective was to assess preliminary myoma-related symptom improvement and myoma volume reduction at 3 to 6 months post-treatment in subsets of patients. DESIGN: Multicenter prospective single-arm pilot study (Canadian Task Force classification II-2)...
May 2017: Journal of Minimally Invasive Gynecology
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