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Ultrasound guided regional

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https://www.readbyqxmd.com/read/29208984/a-nonlinear-approach-to-identify-pathological-change-of-thyroid-nodules-based-on-statistical-analysis-of-ultrasound-rf-signals
#1
Huan Xu, Chunrui Liu, Ping Yang, Juan Tu, Bin Yang, Dong Zhang
In order to reassure the majority of patients with benign nodules from unnecessary needle biopsy, there is an increasing clinical requirement to identify benign and malignant thyroid nodules during ultrasound diagnosis. A nonlinear approach based on statistical analysis of ultrasound radio-frequency (RF) signals was developed for differential diagnosing the thyroid nodules to improve the diagnostic accuracy. Data from 44 patients with solitary thyroid nodules were collected, following with the ultrasound-guided fine needle aspiration (FNA) as the ground truth...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29193144/simulating-thermal-effects-of-mr-guided-focused-ultrasound-in-cortical-bone-and-its-surrounding-tissue
#2
Thomas J Hudson, Thomas Looi, Samuel Pichardo, Joao Amaral, Michael Temple, James M Drake, Adam C Waspe
PURPOSE: Magnetic resonance guided focused ultrasound (MRgFUS) is emerging as a treatment alternative for osteoid osteoma and painful bone metastases. This study describes a new simulation platform that predicts the distribution of heat generated by MRgFUS when applied to bone tissue. METHODS: Calculation of the temperature distribution was performed using two mathematical models. The first determined the propagation and absorption of acoustic energy through each medium, and this was performed using a multi-layered approximation of the Rayleigh integral...
November 28, 2017: Medical Physics
https://www.readbyqxmd.com/read/29189931/preoperative-sentinel-lymph-node-localization-in-vulvar-cancer-preliminary-experience-with-inguinal-intradermal-contrast-enhanced-ultrasound
#3
O Lahtinen, M Eloranta, M Anttila, H Kärkkäinen, R Sironen, R Vanninen, S Rautiainen
OBJECTIVE: To evaluate the feasibility and diagnostic performance of intradermal contrast-enhanced ultrasound (CEUS) sentinel lymph node (SLN) procedure in vulvar cancer. METHODS: Twelve consecutive patients with vulvar cancer underwent preoperatively inguinal CEUS SLN examination and guide wire marking of the enhanced lymph nodes. Altogether, 20 groins were examined with CEUS contrast agent injections including 8 bilateral groins due to midline tumours. One groin was excluded due to previous inguinal surgery...
November 30, 2017: European Radiology
https://www.readbyqxmd.com/read/29188200/management-and-outcomes-of-gleason-six-prostate-cancer-detected-on-needle-biopsy-a-single-surgeon-experience-over-6%C3%A2-years
#4
Brayden March, George Koufogiannis, Mark Louie-Johnsun
Objective: To assess the management and oncological outcomes in men diagnosed with Gleason score (GS) 6 prostate cancer on needle biopsy in a regional centre, as compared with published international data. Materials and methods: A retrospective analysis was conducted of patients who were diagnosed with GS 6 prostate cancer via transrectal ultrasound-guided or transperineal biopsy between June 2009 and September 2015 under the care of a single surgeon. Data were obtained from a prospectively collected database...
December 2017: Prostate International
https://www.readbyqxmd.com/read/29184439/ultrasound-guided-rectus-sheath-block-caudal-analgesia-or-surgical-site-infiltration-for-pediatric-umbilical-herniorrhaphy-a-prospective-double-blinded-randomized-comparison-of-three-regional-anesthetic-techniques
#5
Lance M Relland, Joseph D Tobias, David Martin, Giorgio Veneziano, Ralph J Beltran, Christopher McKee, Tarun Bhalla
Background: Umbilical hernia repair is a common pediatric surgical procedure. While opioid analgesics are a feasible option and have long been a mainstay in the pharmacological intervention for pain, the effort to improve care and limit opioid-related adverse effects has led to the use of alternative techniques, including regional anesthesia. The current study prospectively compares the analgesic efficacy of three techniques, including caudal epidural blockade, peripheral nerve blockade, and local wound infiltration, in a double-blinded study...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29177134/automatic-detection-and-quantitative-dce-mri-scoring-of-prostate-cancer-aggressiveness
#6
Nestor Andres Parra, Alan Pollack, Felix M Chinea, Matthew C Abramowitz, Brian Marples, Felipe Munera, Rosa Castillo, Oleksandr N Kryvenko, Sanoj Punnen, Radka Stoyanova
Purpose: To develop a robust and clinically applicable automated method for analyzing Dynamic Contrast Enhanced (DCE-) MRI of the prostate as a guide for targeted biopsies and treatments. Materials and methods: An unsupervised pattern recognition (PR) method was used to analyze prostate DCE-MRI from 71 sequential radiotherapy patients. Identified regions of interest (ROIs) with increased perfusion were assigned either to the peripheral (PZ) or transition zone (TZ)...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29173667/ultrasound-guided-interventions-of-the-cervical-spine-and-nerves
#7
REVIEW
Ke-Vin Chang, Wei-Ting Wu, Levent Özçakar
High-resolution ultrasound (US) enables prompt depiction of muscles, tendons, ligaments, and peripheral nerves. It seems to be the best imaging modality for guiding perineural injections. The most complicated neurovascular network of the musculoskeletal system surrounds the cervical spine; so injection to that region is never an easy task. This article elaborates the regional anatomy and the use of US scanning and guidance for cervical interventions; for example, cervical root, superficial cervical plexus, stellate ganglion, cervical medial branch, greater occipital nerve, and third occipital nerve...
February 2018: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/29170811/triple-elastofibromas-located-in-the-supra-and-infrascapular-regions-a-case-report
#8
Cyprian Olchowy, Matías de Albert de Delás-Vigo, Manolo Perez, Nikaoly Ciriaco, Rosa Dominguez Oronoz
We report a case of triple elastofibromas located in the supra- and infrascapular regions. A 61-year-old female with a history of bilateral elastofibroma in the typical subscapular region (6 years before) was admitted for the evaluation of a left-sided suprascapular mass that she had first noted 3 months before. On physical examination, a firm, painless, mobile mass was palpated in the subcutaneous tissue. The patient had not observed any changes of the two known lesions over the past 6 years. The patient denied a family history of elastofibroma...
November 23, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29169795/paravertebral-block-for-thoracic-surgery
#9
REVIEW
Francine D'Ercole, Harendra Arora, Priya A Kumar
Local anesthetic injected into a wedge-shaped space lateral to the spinal nerves as they emerge from the intervertebral foramina produces somatosensory and sympathetic nerve blockade effective for anesthesia and for managing pain of unilateral origin from the chest and abdomen. Paravertebral blockade (PVB) is versatile and may be applied unilaterally or bilaterally. Unlike thoracic epidural, the PVB technique may be used to avoid contralateral sympathectomy, thereby minimizing hypotension and leading to better preservation of blood pressure...
October 4, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29159974/ultrasonographic-anatomy-of-the-atlanto-occipital-region-and-ultrasound-guided-cerebrospinal-fluid-collection-in-rabbits-oryctolagus-cuniculus
#10
Carlo Anselmi, Sara Dias, Jaume Martorell, Marc Navarro, Yvonne Espada, Rosa Novellas
Cerebrospinal fluid analyses are important for diagnosis of neurologic problems in rabbits and for translational research projects using rabbits as models. Blind puncture of the cisterna magna is the current standard technique for sampling cerebrospinal fluid in this species. However, the complexity and small size of the cisterna magna and surrounding structures are limitations of this technique. Aims of this prospective, anatomic, pilot study were to (1) describe the normal anatomy of the atlanto-occipital region, (2) describe ultrasonographic anatomic landmarks, and (3) develop and evaluate a technique for ultrasound-guided puncture of the cisterna magna for cerebrospinal fluid sampling in rabbits...
November 20, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29158836/a-laser-activated-biocompatible-theranostic-nanoagent-for-targeted-multimodal-imaging-and-photothermal-therapy
#11
Liming Deng, Xiaojun Cai, Danli Sheng, Yang Yang, Eric M Strohm, Zhigang Wang, Haitao Ran, Dong Wang, Yuanyi Zheng, Pan Li, Tingting Shang, Yi Ling, Fengjuan Wang, Yang Sun
Multifunctional nanoparticles have been reported for cancer detection and treatment currently. However, the accurate diagnosis and efficient treatment for tumors are still not satisfied. Here we report on the development of targeted phase change multimodal polymeric nanoparticles for the imaging and treatment of HER2-positive breast cancer. METHODS: We evaluated the multimodal imaging capabilities of the prepared nanoparticles in vitro using agar-based phantoms. The targeting performance and cytotoxicity of the nanoparticles were examined in cell culture using SKBR3 (over-expressing HER2) and MDA-MB-231 (HER2 negative) cells...
2017: Theranostics
https://www.readbyqxmd.com/read/29156485/-cervical-plexus-blocks
#12
Ronald Seidel
Blockades of the cervical plexus are established anesthesia procedures, not only in the context of operative carotid revascularizations. Recent investigations define inner sonoanatomic landmarks as well as the importance of brain nerves for innervation in the neck region. The present practice-oriented article discusses current study results, alternative techniques (ultrasound- versus landmark-guided) and fields of application (carotid desobliteration, surgery of the shoulder, ear and infraclavicular region)...
November 2017: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/29155191/ultrasound-guided-pudendal-block-is-a-viable-alternative-to-caudal-block-for-hypospadias-surgery-a-single-surgeon-pilot-study
#13
Sarah Hecht, Jorge Piñeda, Aaron Bayne
OBJECTIVE: To evaluate pudendal nerve block as an alternative to caudal block for hypospadias surgery. METHODS: Data were obtained by chart review. Children who underwent hypospadias repair between 2012 and 2016 by a single surgeon at an academic institution were included. Patients received ultrasound-guided pudendal block (n=21) or caudal block (n=19) as a regional adjunct to general anesthesia. Primary outcomes included analgesic requirement and postoperative length of stay in the recovery unit...
November 16, 2017: Urology
https://www.readbyqxmd.com/read/29148009/preoperative-ultrasound-for-runoff-venous-decompression-of-peripheral-nerves-for-arteriovenous-access-related-pain-in-the-upper-limb
#14
Hiroaki Matsuda, Yoshinari Oka, Ryuichi Yoshida, Yuki Katsura, Hidemi Takeuchi, Yasuo Fujimoto, Shigeko Takatsu, Masashi Miyazaki
INTRODUCTION: Arteriovenous access (AVA)-related pain treated successfully with runoff-venous decompression of the causative nerve, following ultrasound (US)-assisted preoperative evaluation, has never been reported. CASE PRESENTATION: A 57-year-old man suffering from constant exhausting pains along the outflow cephalic vein of the radiocephalic arteriovenous fistula at the wrist and the antecubital fossa, was treated surgically after the diagnosis of AVA-related pain derived from cephalic vein compression on two peripheral cutaneous nerves, the superficial radial nerve (SRN) and the lateral antebrachial cutaneous nerve (LACN)...
November 9, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29141114/ph-ultrasound-dual-responsive-gas-generator-for-ultrasound-imaging-guided-therapeutic-inertial-cavitation-and-sonodynamic-therapy
#15
Qianhua Feng, Wanxia Zhang, Xuemei Yang, Yuzhen Li, Yongwei Hao, Hongling Zhang, Lin Hou, Zhenzhong Zhang
Herein, a pH/ultrasound dual-responsive gas generator is reported, which is based on mesoporous calcium carbonate (MCC) nanoparticles by loading sonosensitizer (hematoporphyrin monomethyl ether (HMME)) and modifying surface hyaluronic acid (HA). After pinpointing tumor regions with prominent targeting efficiency, HMME/MCC-HA decomposes instantaneously under the cotriggering of tumoral inherent acidic condition and ultrasound (US) irradiation, concurrently accompanying with CO2 generation and HMME release with spatial/temporal resolution...
November 15, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29124818/diagnosis-and-management-of-patients-with-enhanced-myometrial-vascularity-associated-with-retained-products-of-conception
#16
Yvette S Groszmann, Amie Lynn Healy Murphy, Beryl R Benacerraf
OBJECTIVES: We performed this study to assess the complication rate, including the estimated amount of blood loss, in patients who underwent dilation and curettage for treatment of retained products of conception with markedly enhanced myometrial vascularity mimicking arteriovenous malformations. METHODS: This is a retrospective medical records review study of patients with retained products of conception with enhanced myometrial vascularity presenting to our ultrasound unit between August 1, 2015 and August 1, 2017...
November 10, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29123624/state-of-education-regarding-ultrasound-guided-interventions-during-pain-fellowships-in-korea-a-survey-of-recent-fellows
#17
Hyung Tae Kim, Sae Young Kim, Gyung Jo Byun, Byung Chul Shin, Jin Young Lee, Eun Joo Choi, Jong Bum Choi, Ji Hee Hong, Seung Won Choi, Yeon Dong Kim
Background: Recently, the use of ultrasound (US) techniques in regional anesthesia and pain medicine has increased significantly. However, the current extent of training in the use of US-guided pain management procedures in Korea remains unknown. The purpose of the present study was to assess the current state of US training provided during Korean Pain Society (KPS) pain fellowship programs through the comparative analysis between training hospitals. Methods: We conducted an anonymous survey of 51 pain physicians who had completed KPS fellowships in 2017...
October 2017: Korean Journal of Pain
https://www.readbyqxmd.com/read/29123607/procedural-simulation-medical-student-preference-and-value-of-three-task-trainers-for-ultrasound-guided-regional-anesthesia
#18
Shadi Lahham, Taylaur Smith, Jessa Baker, Amanda Purdy, Erica Frumin, Bret Winners, Sean P Wilson, Abdulatif Gari, John C Fox
BACKGROUND: Ultrasound guided regional anesthesia is widely taught using task trainer models. Commercially available models are often used; however, they can be cost prohibitive. Therefore, alternative "homemade" models with similar fidelity are often used. We hypothesize that professional task trainers will be preferred over homemade models. The purpose of this study is to determine realism, durability and cleanliness of three different task trainers for ultrasound guided nerve blocks...
2017: World Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29122129/a-new-algorithm-for-crossing-chronic-total-occlusions-from-the-asia-pacific-chronic-total-occlusion-club
#19
REVIEW
Scott A Harding, Eugene B Wu, Sidney Lo, Soo Teik Lim, Lei Ge, Ji-Yan Chen, Jie Quan, Seung-Whan Lee, Hsien-Li Kao, Etsuo Tsuchikane
Although the hybrid chronic total occlusion (CTO) algorithm had many excellent recommendations, there has been infrequent adoption in the Asia Pacific region. The Asia Pacific CTO club propose an algorithm for case selection based on the Japan-CTO score and a new CTO algorithm, which is applicable globally. This algorithm allows for differing skill sets and equipment availability and contains practical teaching for CTO percutaneous coronary intervention. Similar to the hybrid algorithm there are 3 main questions that determine whether the primary approach is antegrade or retrograde: 1) is there proximal cap ambiguity; 2) is the distal vessel of poor quality; and 3) are there interventional collaterals present...
November 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29108314/utility-of-endoscopic-ultrasound-guided-fine-needle-aspiration-of-regional-lymph-nodes-that-are-proximal-to-and-far-from-the-primary-distal-esophageal-carcinoma
#20
Yusuke Shimodaira, Rebecca S Slack, Kazuto Harada, Manoop S Bhutani, Elena Elimova, Gregg A Staerkel, Nour Sneige, Jeremy Erasmus, Hironori Shiozaki, Nikolaos Charalampakis, Venkatram Planjery, Dilsa Mizrak Kaya, Fatemeh G Amlashi, Mariela A Blum, Heath D Skinner, Bruce D Minsky, Dipen M Maru, Wayne L Hofstetter, Stephen G Swisher, Jeannette E Mares, Jane E Rogers, Quan D Lin, William A Ross, Brian Weston, Jeffrey H Lee, Jaffer A Ajani
Implications of assessing the proximal and far para-tracheal or sub-carinal nodes (para-tracheal [PTN] or sub-carinal [SCN]) associated with lower primary esophageal carcinomas (ECs) are unclear. To evaluate the value of endoscopic ultrasound guided fine-needle aspiration (EUS-FNA) for PTN and SCN, we analyzed results by positron emission tomography (PET) avidity, 4 EUS node malignancy features, and EUS-FNA results in all patients with Siewert's I or II EC. Of 133 patients (PTN, n=102; SCN, n=31) with EUS-FNA, 47 (35%) patients had malignant node, leading to treatment modifications...
October 3, 2017: Oncotarget
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