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https://www.readbyqxmd.com/read/28332158/first-clinical-use-of-the-echotrack-guidance-approach-for-radiofrequency-ablation-of-thyroid-gland-nodules
#1
Alfred Michael Franz, Alexander Seitel, Nasrin Bopp, Christian Erbelding, Dominique Cheray, Stefan Delorme, Frank Grünwald, Hüdayi Korkusuz, Lena Maier-Hein
PURPOSE: Percutaneous radiofrequency ablation (RFA) of thyroid nodules is an alternative to surgical resection that offers the benefits of minimal scars for the patient, lower complication rates, and shorter treatment times. Ultrasound (US) is the preferred modality for guiding these procedures. The needle is usually kept within the US scanning plane to ensure needle visibility. However, this restricts flexibility in both transducer and needle movement and renders the procedure difficult, especially for inexperienced users...
March 22, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28321422/autologous-tenocyte-injection-for-the-treatment-of-chronic-recalcitrant-gluteal-tendinopathy-a-prospective-pilot-study
#2
Thomas A Bucher, Jay R Ebert, Anne Smith, William Breidahl, Michael Fallon, Tao Wang, Ming-Hao Zheng, Gregory C Janes
BACKGROUND: Gluteal tendinopathy is a common cause of lateral hip pain, and existing conservative treatment modalities demonstrate high symptom recurrence rates. Autologous tenocyte injection (ATI) is a promising cell therapy that may be useful for the treatment of gluteal tendinopathy. PURPOSE: To investigate the safety and effectiveness of ATI, specifically in patients with chronic recalcitrant gluteal tendinopathy. STUDY DESIGN: Case series; Level of evidence, 4...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28319265/derivation-of-a-performance-checklist-for-ultrasound-guided-arthrocentesis-using-the-modified-delphi-method
#3
Derek Kunz, Manoj Pariyadath, Mary Wittler, Kim Askew, David Manthey, Nicholas Hartman
OBJECTIVES: Arthrocentesis is an important skill for physicians in multiple specialties. Recent studies indicate a superior safety and performance profile for this procedure using ultrasound guidance for needle placement, and improving quality of care requires a valid measurement of competency using this modality. METHODS: We endeavored to create a validated tool to assess the performance of this procedure using the modified Delphi technique and experts in multiple disciplines across the United States...
March 20, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28298941/in-vivo-feasibility-of-real-time-mr-us-fusion-imaging-lumbar-facet-joint-injections
#4
Riccardo Sartoris, Davide Orlandi, Angelo Corazza, Luca Maria Sconfienza, Alice Arcidiacono, Silvia Perugin Bernardi, Simone Schiaffino, Giovanni Turtulici, Pietro Caruso, Enzo Silvestri
OBJECTIVES: Traditionally, facet joint injections (FJI) are performed under fluoroscopic or computed tomography (CT) guidance, mainly due to the deep anatomical location and the presence of bony landmarks. Fusion imaging technology, which couples the ultrasound scan with the corresponding CT or magnetic resonance (MR) image obtained from the diagnostic examination and reformatted in real time according to the ultrasound scanning plane, allows to combine the panoramic view and the elevated anatomical detail of MR or CT with the ease of use of ultrasound without patient exposure to ionizing radiation...
March 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28295403/toward-a-3d-transrectal-ultrasound-system-for-verification-of-needle-placement-during-high-dose-rate-interstitial-gynecologic-brachytherapy
#5
Jessica Robin Rodgers, Kathleen Surry, Eric Leung, David D'Souza, Aaron Fenster
PURPOSE: Treatment for gynecologic cancers, such as cervical, recurrent endometrial, and vaginal malignancies, commonly includes external-beam radiation and brachytherapy. In high-dose-rate (HDR) interstitial gynecologic brachytherapy, radiation treatment is delivered via hollow needles that are typically inserted through a template on the perineum with a cylinder placed in the vagina for stability. Despite the need for precise needle placement to minimize complications and provide optimal treatment, there is no standard intra-operative image-guidance for this procedure...
March 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28287519/endobronchial-ultrasound-guided-intratumoral-injection-of-cisplatin-for-the-treatment-of-isolated-mediastinal-recurrence-of-lung-cancer
#6
Hiren J Mehta, Michael A Jantz
Isolated hilar and mediastinal recurrence (IMHR) following external beam radiation therapy (EBRT) in patients with lung cancer is common. These patients do not have many treatment options and are usually offered palliative chemotherapy or best supportive care. Endobronchial ultrasound (EBUS)-guided intratumoral injection of cisplatin (ITC) is a novel approach for these patients. The procedure is performed under conscious sedation. The lesion is located with a bronchoscopy using EBUS, and a 22-gauge EBUS needle is advanced through the working channel of the scope and locked in position...
February 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28268347/temperature-monitoring-during-radiofrequency-ablation-of-liver-in-vivo-trials
#7
P Saccomandi, G Frauenfelder, C Massaroni, M A Caponera, A Polimadei, F Taffoni, F M Di Matteo, G Costamagna, F Giurazza, E Schena
Radiofrequency ablation (RFA) is a minimally invasive procedure used to treat tumors by means of hyperthermia, mostly through percutaneous approach. The tissue temperature plays a pivotal role in the achievement of the target volume heating, while sparing the surrounding healthy tissue from thermal damage. Several techniques for thermometry during RFA are investigated, most of them based on the use of single-point measurement system (e.g., thermocouples). The measurement of temperature map is crucial for the real-time control and fine adjustment of the treatment settings, to optimize the shape and size of the ablated volume...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28263243/use-of-3-dimensional-printing-to-create-patient-specific-thoracic-spine-models-as-task-trainers
#8
Jelliffe Jeganathan, Yanick Baribeau, Jeffrey Bortman, Feroze Mahmood, Marc Shnider, Muneeb Ahmed, Azad Mashari, Rabia Amir, Yannis Amador, Robina Matyal
BACKGROUND AND OBJECTIVES: Thoracic epidural anesthesia is a technically challenging procedure with a high failure rate of 24% to 32% nationwide. Residents in anesthesiology have limited opportunities to practice this technique adequately, and there are no training tools available for this purpose. Our objective was to build a low-cost patient-specific thoracic epidural training model. METHODS: We obtained thoracic computed tomography scan data from patients with normal and kyphotic spine...
March 3, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28263238/evaluation-of-effects-of-radiofrequency-ablation-of-ex-vivo-liver-using-the-1-fr-wire-electrode
#9
Tarun Rustagi, Ferga C Gleeson, Barham K Abu Dayyeh, Mark D Topazian, Michael J Levy
BACKGROUND AND STUDY AIMS: Percutaneous and intraoperative radiofrequency ablation (RFA) has become a valued tool in the management of primary and secondary hepatic lesions. A recent FDA-approved endoscopic ultrasound (EUS)-guided RFA probe now offers promise to help manage such lesions. However, there are no data to determine the ideal power setting and duration of ablation needed to effectively treat hepatic masses. The aim of the study was to evaluate the macroscopic zone of hepatic injury for EUS-RFA using a variety of settings within a fresh porcine hepatic specimen...
March 3, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28258634/an-easy-to-make-low-cost-ultrasound-phantom-for-simulation-training-in-abscess-identification-and-aspiration
#10
Juliana Wilson, Lorraine Ng, Vaughn Browne, Resa E Lewiss
We have created a low-cost and easy to make phantom for abscess identification using point-of-care ultrasound. The phantom also allows needle tracking and abscess aspiration using ultrasound guidance.
March 4, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28251661/reduced-complication-rates-of-percutaneous-transhepatic-biliary-drainage-with-ultrasound-guidance
#11
Andrej Wagner, Christian Mayr, Tobias Kiesslich, Frieder Berr, Paul Friesenbichler, Gernot W Wolkersdörfer
BACKGROUND: We aimed to analyze the benefits of adding ultrasound (US) guidance to the standard fluoroscopically assisted percutaneous transhepatic biliary drainage (F-PTBD). We also performed a systematic literature review of success and complication rates of US-PTBD in a wide field of indications. METHODS: We evaluated a total of 81 US-PTBDs carried out in our institution, 74% of which were part of the management of malignancy. In addition, we compared our results with those of a total of 5,272 procedures (3,779 F-PTBD and 1,493 US-PTBD) reported in the literature...
March 2, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28250896/endoscopy-guided-ablation-of-pancreatic-lesions-technical-possibilities-and-clinical-outlook
#12
REVIEW
Marianna Signoretti, Roberto Valente, Alessandro Repici, Gianfranco Delle Fave, Gabriele Capurso, Silvia Carrara
Endoscopic ultrasound (EUS) and endoscopic retrograde cholangiopancreatography (ERCP)-guided ablation procedures are emerging as a minimally invasive therapeutic alternative to radiological and surgical treatments for locally advanced pancreatic cancer (LAPC), pancreatic neuroendocrine tumours (PNETs), and pancreatic cystic lesions (PCLs). The advantages of treatment under endoscopic control are the real-time imaging guidance and the possibility to reach a deep target like the pancreas. Currently, radiofrequency probes specifically designed for ERCP or EUS ablation are available as well as hybrid cryotherm probe combining radiofrequency with cryotechnology...
February 16, 2017: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28246511/ultrasound-guided-percutaneous-core-needle-biopsy-of-abdominal-viscera-tips-to-ensure-safe-and-effective-biopsy
#13
Jin Woong Kim, Sang Soo Shin
Ultrasound-guided percutaneous core needle biopsy (USPCB) is used extensively in daily clinical practice for the pathologic confirmation of both focal and diffuse diseases of the abdominal viscera. As a guidance tool, US has a number of clear advantages over computerized tomography or magnetic resonance imaging: fewer false-negative biopsies, lack of ionizing radiation, portability, relatively short procedure time, real-time intra-procedural visualization of the biopsy needle, ability to guide the procedure in almost any anatomic plane, and relatively lower cost...
March 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28236117/3d-ultrasound-registration-based-visual-servoing-for-neurosurgical-navigation
#14
Oliver Zettinig, Benjamin Frisch, Salvatore Virga, Marco Esposito, Anna Rienmüller, Bernhard Meyer, Christoph Hennersperger, Yu-Mi Ryang, Nassir Navab
PURPOSE: We present a fully image-based visual servoing framework for neurosurgical navigation and needle guidance. The proposed servo-control scheme allows for compensation of target anatomy movements, maintaining high navigational accuracy over time, and automatic needle guide alignment for accurate manual insertions. METHOD: Our system comprises a motorized 3D ultrasound (US) transducer mounted on a robotic arm and equipped with a needle guide. It continuously registers US sweeps in real time with a pre-interventional plan based on CT or MR images and annotations...
February 24, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28235536/the-use-of-ultrasound-in-planned-cesarean-delivery-under-spinal-anesthesia-for-patients-having-nonprominent-anatomic-landmarks
#15
Mursel Ekinci, Hacı Ahmet Alici, Ali Ahiskalioglu, Ilker Ince, Mehmet Aksoy, Erkan Cem Celik, Aysenur Dostbil, Mine Celik, Pinar Karaca Baysal, Birzat Emre Golboyu, Ayşe Nur Yeksan
STUDY OBJECTIVE: The aim of the study was to compare conventional landmark method with ultrasound-guided spinal anesthesia in cesarean delivery cases where spinous processes and interspinous spaces were not prominent on physical examination. DESIGN: Randomized controlled clinical trial. SETTING: Operating rooms of university hospital of Erzurum, Turkey. PATIENTS: Sixty-four 18- to 45-year-old American Society of Anesthesiologists I-II patients scheduled for cesarean delivery under spinal anesthesia having hardly palpated anatomic landmarks on vertebral column...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28226508/temperature-monitoring-during-radiofrequency-ablation-of-liver-in-vivo-trials
#16
P Saccomandi, G Frauenfelder, C Massaroni, M A Caponera, A Polimadei, F Taffoni, F M Di Matteo, G Costamagna, F Giurazza, E Schena, P Saccomandi, G Frauenfelder, C Massaroni, M A Caponera, A Polimadei, F Taffoni, F M Di Matteo, G Costamagna, F Giurazza, E Schena, F Taffoni, F M Di Matteo, F Giurazza, E Schena, G Costamagna, A Polimadei, G Frauenfelder, P Saccomandi, C Massaroni
Radiofrequency ablation (RFA) is a minimally invasive procedure used to treat tumors by means of hyperthermia, mostly through percutaneous approach. The tissue temperature plays a pivotal role in the achievement of the target volume heating, while sparing the surrounding healthy tissue from thermal damage. Several techniques for thermometry during RFA are investigated, most of them based on the use of single-point measurement system (e.g., thermocouples). The measurement of temperature map is crucial for the real-time control and fine adjustment of the treatment settings, to optimize the shape and size of the ablated volume...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225913/ultrasound-as-a-safe-and-reliable-guidance-for-subarachnoid-puncture-in-rabbits
#17
Ivan Dias Fernandes Pereira, Roberto Bezerra Vital, Ronaldo Silva, Felipe Gilberto Valerini, Vania Maria de Vasconcelos Machado, Mariangela Esrher Marques, Helio Miot, Lais Helena Navarro, Eliana Marisa Ganem
Purpose: To evaluate a model for studying the toxicity in nervous tissue and meninges using ultrasound to guide needle insertion into the subarachnoid space of rabbits, with the objective of avoiding injuries triggered by the puncture and by intraneural injection of solutions. Methods: Forty-five adult female rabbits were divided into 3 groups (G): G1 underwent subarachnoid puncture, G2 underwent subarachnoid injection of saline solution and G3 underwent subarachnoid injection of 0...
January 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28216973/endoscopic-ultrasound-guided-gallbladder-drainage-for-acute-cholecystitis-long-term-outcomes-after-removal-of-a-self-expandable-metal-stent
#18
Ken Kamata, Mamoru Takenaka, Masayuki Kitano, Shunsuke Omoto, Takeshi Miyata, Kosuke Minaga, Kentaro Yamao, Hajime Imai, Toshiharu Sakurai, Tomohiro Watanabe, Naoshi Nishida, Masatoshi Kudo
AIM: To assess the long-term outcomes of this procedure after removal of self-expandable metal stent (SEMS). The efficacy and safety of endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) with SEMS were also assessed. METHODS: Between January 2010 and April 2015, 12 patients with acute calculous cholecystitis, who were deemed unsuitable for cholecystectomy, underwent EUS-GBD with a SEMS. EUS-GBD was performed under the guidance of EUS and fluoroscopy, by puncturing the gallbladder with a needle, inserting a guidewire, dilating the puncture hole, and placing a SEMS...
January 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28205397/pancreatic-involvement-by-metastasizing-neoplasms-as-determined-by-endoscopic-ultrasound-guided-fine-needle-aspiration-a-clinicopathologic-characterization
#19
Miroslav Sekulic, Khalid Amin, Tetyana Mettler, Lizette K Miller, Shawn Mallery, Jimmie Stewart
BACKGROUND: Pancreatic tumors often represent primary neoplasms, however organ involvement with metastatic disease can occur. The use of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) to determine the underlying pathology provides guidance of clinical management. METHODS: 25 cases were identified in a retrospective review of our institution's records from 2006 to 2016. Clinical parameters and prognosis are described. RESULTS: Metastatic lesions to the pancreas diagnosed by EUS-FNA accounted for 4...
February 16, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28183582/use-of-ultrasound-for-spinal-anesthesia-in-a-super-morbidly-obese-patient
#20
Yasuhiro Morimoto, Yoichiro Ihara, Yoko Shimamoto, Hiroko Shiramoto
We report the application of ultrasound prescans for spinal anesthesia to morbid obesity patient. A 38-year-old woman with a body mass index (BMI) of 50 (weight: 110 kg; height: 148 cm) was scheduled to undergo pilonidal cyst resection at the bottom of the tailbone. Spinal anesthesia was selected for the procedure, because the patient's position during the surgery was prone and the patient had morbid obesity. To determine the spinal needle insertion point and the distance between the skin and dura, we planned to use ultrasound...
February 2017: Journal of Clinical Anesthesia
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