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Ultrasound guided regional

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https://www.readbyqxmd.com/read/29469937/radiomic-features-on-mri-enable-risk-categorization-of-prostate-cancer-patients-on-active-surveillance-preliminary-findings
#1
Ahmad Algohary, Satish Viswanath, Rakesh Shiradkar, Soumya Ghose, Shivani Pahwa, Daniel Moses, Ivan Jambor, Ronald Shnier, Maret Böhm, Anne-Maree Haynes, Phillip Brenner, Warick Delprado, James Thompson, Marley Pulbrock, Andrei S Purysko, Sadhna Verma, Lee Ponsky, Phillip Stricker, Anant Madabhushi
BACKGROUND: Radiomic analysis is defined as computationally extracting features from radiographic images for quantitatively characterizing disease patterns. There has been recent interest in examining the use of MRI for identifying prostate cancer (PCa) aggressiveness in patients on active surveillance (AS). PURPOSE: To evaluate the performance of MRI-based radiomic features in identifying the presence or absence of clinically significant PCa in AS patients. STUDY TYPE: Retrospective...
February 22, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29459566/-successful-endoscopic-ultrasound-guided-cyst-drainage-eus-cd-of-pancreatic-pseudocyst-in-the-abdominal-cavity-to-the-cervical-region-accompanied-by-spontaneous-rupture-into-the-portal-vein-a-case-study
#2
Takuya Takayanagi, Yusuke Sekino, Ken Ishii, Shinji Sato, Ryusuke Umemura, Shiori Uchiyama, Noriyoshi Kanazawa, Kenichi Kawana, Hajime Nagase
A 53-year-old man was admitted to our hospital with the complaint of neck pain and dyspnea. His blood examination revealed increased C-reactive protein and amylase levels. Enhanced computed tomography (CT) images demonstrated a retropharyngeal and a mediastinal low-density area extending to the portal area. He was diagnosed with pancreatic pseudocyst from the abdominal cavity to the cervical region accompanied by spontaneous rupture into the portal vein. Endoscopic ultrasound-guided cyst drainage (EUS-CD) of the most inferior cavity around the superior mesenteric artery was performed through the gastric wall...
2018: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/29459494/a-dual-mode-hemispherical-sparse-array-for-three-dimensional-passive-acoustic-mapping-and-skull-localization-within-a-clinical-mri-guided-focused-ultrasound-device
#3
Calum Crake, Spencer T Brinker, Christian M Coviello, Margaret Livingstone, Nathan J McDannold
Previous work has demonstrated that passive acoustic imaging may be used alongside MRI for monitoring of focused ultrasound therapy. However, past implementations have generally made use of either linear arrays originally designed for diagnostic imaging or custom narrowband arrays specific to in-house therapeutic transducer designs, neither of which is fully compatible with clinical MR-guided focused ultrasound devices. Here we have designed an array which is suitable for use within an FDA-approved MR-guided transcranial focused ultrasound device, within the bore of a 3 Tesla clinical MRI scanner...
February 20, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29454333/comparative-study-of-ultrasound-guided-paravertebral-block-versus-intravenous-tramadol-for-postoperative-pain-control-in-percutaneous-nephrolithotomy
#4
Zehra Hatipoglu, Ersel Gulec, Mediha Turktan, Volkan Izol, Atilla Arıdogan, Yasemin Gunes, Dilek Ozcengiz
BACKGROUND: Percutaneous nephrolithotomy (PCNL) is a minimally invasive surgical procedure for renal calculi, and nephrostomy tubes lead to postoperative pain after PCNL. Regional techniques (e.g., epidural analgesia and peripheral blocks) and opioids are applied for postoperative pain treatment. The aim of this study was to compare effectiveness of ultrasound-guided paravertebral block (PVB) and tramadol on postoperative pain in patients who underwent PCNL. METHOD: Fifty-three patients were included in this prospective randomized study...
February 17, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29453690/the-effectiveness-of-targeted-relative-to-empiric-prophylaxis-on-infectious-complications-after-transrectal-ultrasound-guided-prostate-biopsy-a-meta-analysis
#5
REVIEW
Susan Scott, Patrick N Harris, Deborah A Williamson, Michael A Liss, Suhail A R Doi, Matthew J Roberts
PURPOSE: Rectal culture screening for fluoroquinolone (FQ)-resistant Enterobacteriaceae before transrectal ultrasound guided prostate (TRUSPB) biopsy and targeted antibiotic prophylaxis (TAP) may decrease post-TRUSPB infection rates compared to empiric (EAP) regimens. The objective of this study was to evaluate the effectiveness of targeted relative to empiric prophylaxis regimens on rates of infectious complications after TRUSPB and to determine the baseline prevalence of FQ resistance based on prior rectal swabs...
February 16, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29445296/the-ultrasound-guided-retrolaminar-block-volume-dependent-injectate-distribution
#6
Marija Damjanovska, Tatjana Stopar Pintaric, Erika Cvetko, Kamen Vlassakov
Purpose: The ultrasound-guided retrolaminar block is one of the newer and simpler alternatives to the traditional, often technically challenging, paravertebral (PV) block. Its feasibility, safety, and efficacy have already been clinically demonstrated in patients with multiple rib fractures using higher volumes of local anesthetic, when compared with the traditional approach. The primary aim of this observational anatomical study was to assess the spread of local anesthetic from the retrolaminar injection point to the PV space and its volume dependence...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/29439934/suppressed-networks-of-inflammatory-mediators-characterize-chronic-venous-insufficiency
#7
Ulka Sachdev, Lena Vodovotz, Julie Bitner, Derek Barclay, Ruben Zamora, Jinling Yin, Richard L Simmons, Yoram Vodovotz
OBJECTIVE: Chronic venous insufficiency (CVI) affects 25 million adults in the United States. Little emphasis has been placed on inflammatory changes associated with CVI. We hypothesize that in patients with early to mid-stage benign varicose vein disease, differences in circulating inflammatory mediators will be manifested in blood draining the involved area vs circulating blood in control subjects. METHODS: Patients undergoing either endovenous ablation or sclerotherapy for Clinical, Etiology, Anatomy, and Pathophysiology clinical class 3 to 5 disease underwent phlebotomy from regional veins at the time of the procedure...
February 10, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29429375/mechanical-fractionation-of-tissues-using-microsecond-long-hifu-pulses-on-a-clinical-mr-hifu-system
#8
Avinash Eranki, Navid Farr, Ari Partanen, Karun V Sharma, Christopher T Rossi, Avi Z Rosenberg, AeRang Kim, Matthew Oetgen, Haydar Celik, David Woods, Pavel S Yarmolenko, Peter C W Kim, Bradford J Wood
PURPOSE: High intensity focused ultrasound (HIFU) can non-invasively treat tumors with minimal or no damage to intervening tissues. While continuous-wave HIFU thermally ablates target tissue, the effect of hundreds of microsecond-long pulsed sonications is examined in this work. The objective of this study was to characterize sonication parameter-dependent thermomechanical bioeffects to provide the foundation for future preclinical studies and facilitate clinical translation. METHODS AND MATERIALS: Acoustic power, number of cycles/pulse, sonication time, and pulse repetition frequency (PRF) were varied on a clinical magnetic resonance imaging (MRI) - guided HIFU (MR-HIFU) system...
February 11, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29409165/frequency-of-an-accessory-popliteal-efferent-lymphatic-pathway-in-dogs
#9
Monique N Mayer, Katherine A Sweet, Michael N Patsikas, Sally L Sukut, Cheryl L Waldner
Staging and therapeutic planning for dogs with malignant disease in the popliteal lymph node are based on the expected patterns of lymphatic drainage from the lymph node. The medial iliac lymph nodes are known to receive efferent lymph from the popliteal lymph node; however, an accessory popliteal efferent pathway with direct connection to the sacral lymph nodes has also been less frequently reported. The primary objective of this prospective, anatomic study was to describe the frequency of various patterns of lymphatic drainage of the popliteal lymph node...
February 6, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29406410/techniques-for-interventional-mri-guidance-in-closed-bore-systems
#10
Harald Busse, Thomas Kahn, Michael Moche
Efficient image guidance is the basis for minimally invasive interventions. In comparison with X-ray, computed tomography (CT), or ultrasound imaging, magnetic resonance imaging (MRI) provides the best soft tissue contrast without ionizing radiation and is therefore predestined for procedural control. But MRI is also characterized by spatial constraints, electromagnetic interactions, long imaging times, and resulting workflow issues. Although many technical requirements have been met over the years-most notably magnetic resonance (MR) compatibility of tools, interventional pulse sequences, and powerful processing hardware and software-there is still a large variety of stand-alone devices and systems for specific procedures only...
February 2018: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/29395676/quantitative-evaluation-of-combretastatin-a4-phosphate-early-efficacy-in-a-tumor-model-with-dynamic-contrast-enhanced-ultrasound
#11
Pingyu Zhang, Yihan Chen, JinFeng Liu, Yali Yang, Qing Lv, Jing Wang, Li Zhang, Mingxing Xie
Combretastatin A4 phosphate (CA4P) is a vascular disrupting agent that rapidly shuts down blood supply to tumors. Early monitoring of tumor perfusion plays a crucial role in determining the optimal strategy to managing treatment and guiding future therapy. The aim of this study was to investigate the potential value of dynamic contrast-enhanced ultrasound (CEUS) in quantitative evaluation of tumor perfusion at an early stage in CA4P therapy. Central and peripheral perfusion of tumors was detected by CEUS pre-treatment (0 h) and 2, 12 and 48 h after CA4P injection...
January 22, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29382110/intraneural-platelet-rich-plasma-injections-for-the-treatment-of-radial-nerve-section-a-case-report
#12
Unai García de Cortázar, Sabino Padilla, Enrique Lobato, Diego Delgado, Mikel Sánchez
The radial nerve is the most frequently injured nerve in the upper extremity. Numerous options in treatment have been described for radial nerve injury, such as neurolysis, nerve grafts, or tendon transfers. Currently, new treatment options are arising, such as platelet-rich plasma (PRP), an autologous product with proved therapeutic effect for various musculoskeletal disorders. We hypothesized that this treatment is a promising alternative for this type of nerve pathology. The patient was a healthy 27-year-old man who suffered a deep and long cut in the distal anterolateral region of the right arm...
January 29, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29375740/mediastinal-node-staging-by-positron-emission-tomography-computed-tomography-and-selective-endoscopic-ultrasound-with-fine-needle-aspiration-for-patients-with-upper-gastrointestinal-cancer-results-from-a-regional-centre
#13
Chris Harrington, Lyn Smith, Jennifer Bisland, Elisabet López González, Neil Jamieson, Stuart Paterson, Adrian John Stanley
AIM: To investigate the impact of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) and positron emission tomography-computed tomography (PET-CT) in the nodal staging of upper gastrointestinal (GI) cancer in a tertiary referral centre. METHODS: We performed a retrospective review of prospectively recorded data held on all patients with a diagnosis of upper GI cancer made between January 2009 and December 2015. Only those patients who had both a PET-CT and EUS with FNA sampling of a mediastinal node distant from the primary tumour were included...
January 16, 2018: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29371789/case-report-of-a-small-gastric-neuroendocrine-tumor-in-a-deep-layer-of-submucosa-with-diagnosis-by-endoscopic-ultrasound-guided-fine-needle-aspiration-and-treatment-with-laparoscopic-and-endoscopic-cooperative-surgery
#14
Ryo Igarashi, Atsushi Irisawa, Goro Shibukawa, Nobutoshi Soeta, Ai Sato, Akane Yamabe, Mariko Fujisawa, Noriyuki Arakawa, Yoshitsugu Yoshida, Tsunehiko Ikeda, Yoko Abe, Takumi Maki, Shogo Yamamoto, Ikuro Oshibe, Takuro Saito, Hiroshi Hojo
Gastric neuroendocrine tumors (GNETs) are rare lesions characterized by enterochromaffin-like cells of the stomach. Optimal management of GNETs has not yet been definitively determined. Endoscopic resection is approximately recommended for small GNETs associated with hypergastrinemia. However, endoscopic resection might present risk of perforation or positive vertical margin because neuroendocrine tumors occur in the deep mucosa, with some invading the submucosa. In this case, a patient with type A chronic atrophic gastritis had a small subepithelial lesion in a deep submucosal layer, and we diagnosed it as GNET using endoscopic ultrasound-guided fine-needle aspiration biopsy using a forward-viewing and curved linear-array echoendoscope...
2018: Clinical Medicine Insights. Case Reports
https://www.readbyqxmd.com/read/29363762/a-comparison-of-prostate-tumor-targeting-strategies-using-magnetic-resonance-imaging-targeted-transrectal-ultrasound-guided-fusion-biopsy
#15
Peter R Martin, Derek W Cool, Aaron Fenster, Aaron D Ward
PURPOSE: Magnetic resonance imaging (MRI)-targeted, 3D transrectal ultrasound (TRUS)-guided prostate biopsy aims to reduce the 21-47% false negative rate of clinical 2D TRUS-guided systematic biopsy, but continues to yield false negative results. This may be improved via needle target optimization, accounting for guidance system errors and image registration errors. As an initial step toward the goal of optimized prostate biopsy targeting, we investigated how needle delivery error impacts tumor sampling probability for two targeting strategies...
January 24, 2018: Medical Physics
https://www.readbyqxmd.com/read/29354896/-10-year-series-studies-of-chronic-radiation-proctopathy-from-the-sixth-affiliated-hospital-of-sun-yat-sen-university
#16
Lei Wang, Tenghui Ma, Jianping Wang
Chronic radiation proctopathy (CRP) is the delayed adverse effect after radiotherapy for pelvic malignancies. It is characterized as progressive fibrosis in pathology. The symptoms are usually unspecific which include rectal bleeding, perianal pain, tenesmus, stool frequencies and so on. The course of CRP can present from months to years after radiation. Severe complications can occur in the late stage and will greatly affect the quality of life. Currently, there is no standard guides for diagnosis and treatment of CRP...
January 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29332115/ultrasound-guided-transversus-abdominis-plane-block-postoperative-analgesia-in-children-with-spinal-dysraphism
#17
Eralp Çevikkalp, Koray Erbüyün, Serpil Erbüyün, Gülay Ok
Pediatric regional anesthesia is widely used to relieve postoperative pain after abdominal surgery. Commonly used techniques of regional anesthesia include lumbar epidural and caudal block. However, the use of central neuraxial blockade has limitations. It is contraindicated in patients with clotting abnormalities, spinal dysraphism with tethered cord syndrome, meningomyelocele, and following spinal surgery with instrumentation. Ultrasound guided transversus abdominis plane block is a new method of regional anesthesia that can be used in settings where central neuraxial blockade is contraindicated...
January 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29326057/antidepressant-effects-of-focused-ultrasound-induced-blood-brain-barrier-opening
#18
Skyler J Mooney, José N Nobrega, Anthony J Levitt, Kullervo Hynynen
In many cases, hippocampal neurogenesis appears to be a hallmark of antidepressant treatments. One novel technique for inducing this type of neurogenesis is using focused ultrasound waves, in conjunction with circulating microbubbles, to open the blood-brain-barrier. The present experiment aimed to test whether this technique has antidepressant effects in a rodent model. Rats were subjected to 1, 2 or 3 weekly treatments of magnetic resonance-guided focused ultrasound in order to open the blood-brain-barrier in the hippocampal region...
January 8, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29324496/efficacy-of-ultrasound-guided-serratus-plane-block-on-postoperative-quality-of-recovery-and-analgesia-after-video-assisted-thoracic-surgery-a-randomized-triple-blind-placebo-controlled-study
#19
Do-Hyeong Kim, Young Jun Oh, Jin Gu Lee, Donghun Ha, Young Jin Chang, Hyun Jeong Kwak
BACKGROUND: The optimal regional technique for analgesia and improved quality of recovery after video-assisted thoracic surgery (a procedure associated with considerable postoperative pain) has not been established. The main objective in this study was to compare quality of recovery in patients undergoing serratus plane block (SPB) with either ropivacaine or normal saline on the first postoperative day. Secondary outcomes were analgesic outcomes, including postoperative pain intensity and opioid consumption...
January 9, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29324458/ultrasound-imaging-and-guided-injection-for-the-lateral-and-posterior-hip
#20
Ke-Vin Chang, Wei-Ting Wu, Henry L Lew, Levent Özçakar
Ultrasound has emerged as one of the most utilized tools to diagnose musculoskeletal disorders and to assist in interventions. Traditionally, sonographic examination of the hip joint has been challenging because most of the major structures are deeply situated, thus requiring the use of curvilinear transducer for better penetrance. The posterior lateral hip is a frequent area for musculoskeletal pain and nerve entrapments. Common disorders include greater trochanteric pain syndrome, gluteus medius tendinopathy, piriformis syndrome, pudendal neuralgia and proximal hamstring tendinopathy...
January 11, 2018: American Journal of Physical Medicine & Rehabilitation
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