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ultrasound needle guidance

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https://www.readbyqxmd.com/read/27909644/primary-squamous-cell-carcinoma-of-the-pancreas-as-a-cause-of-biliary-obstruction
#1
Kyle Rowe, Jeet Mehta, Fredy Nehme, William Salyers
Primary squamous cell carcinoma of the pancreas (SCCP) is a rare neoplasm, given a lack of naturally occurring squamous cells within the pancreas, accounting for only 0.2% of all pancreatic cancers. The etiology is unknown. Symptomatology is non-specific and similar to other pancreatic neoplasms. No non-invasive testing can adequately rule in SCCP, and workup should proceed similarly to any pancreatic mass. Tissue sampling is required for diagnosis and guidance of further management, most commonly by endoscopic ultrasound with fine needle aspirate...
October 31, 2016: Curēus
https://www.readbyqxmd.com/read/27876559/non-dominant-hand-quicker-to-insert-peripheral-venous-catheters-under-echographic-guidance-a-randomized-trial
#2
Lucas Durand-Bailloud, Ludwig-Serge Aho, Georges Savoldelli, Fiona Ecarnot, Claude Girard, Mehdi Benkhadra
BACKGROUND: Ultrasound guidance for venous catheter placement requires the use of both hands. An accurate and stable ultrasound image is fundamental for obtaining good quality images, consequently permitting accurate needle placement. We hypothesized that the dominant hand could be used to perform echography, leaving the non-dominant hand available for peripheral venous catheter (PVC) insertion. METHODS: Prospective, open-label, randomized, crossover study. Group 1 inserted the PVC with the dominant hand, and held the probe with the non-dominant hand in a first series of 20 insertions, and vice-versa in a second series of 20 insertions performed 11 days later...
November 19, 2016: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/27870646/ultrasound-guided-electrodes-for-conduction-studies-of-the-saphenous-nerve
#3
M E Evangelopoulos, S Humpert, K M Rösler
INTRODUCTION: Saphenous nerve conduction studies are difficult, since the nerve is hard to localize and evoked responses are small. Ultrasound imaging may assist in the accurate localization and optimal positioning of surface (SE) and needle electrodes (NE). METHODS: The study population included 39 subjects and was divided into 2 groups. Group A consisted of 20 healthy subjects, while group B of 19 patients with polyneuropathies. Orthodromic conduction was measured by distal supramaximal nerve stimulation...
November 16, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/27858592/ultrasound-guided-access-into-the-abdomen-in-the-setting-of-portal-hypertension-a-novel-technique
#4
Cory N Criss, Matthew W Ralls, Marcus D Jarboe
As the field of minimally invasive surgery rapidly evolves, there is an opportunity to adopt innovative techniques to accommodate a variety of patient populations. In patients with portal hypertension, a major risk factor upon entry into the abdomen is injury to large, engorged paraumbilical vessels in the anterior abdominal wall. Major blood loss often results from just entering the abdomen. Here, we describe a patient with caput medusae secondary to portal hypertension presenting for laparoscopic repair of a ventral hernia...
November 18, 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/27834453/guidance-markers-increase-the-accuracy-of-simulated-ultrasound-guided-vascular-access-an-observational-cohort-study-in-a-phantom
#5
Sofie Thorn, Marlene Aagaard Hansen, Erik Sloth, Lars Knudsen
INTRODUCTION: Peripheral ultrasound (US)-guided vascular access is gaining popularity. Though studies have demonstrated that US-guided vascular access has several advantages, the procedure is challenging to even the most experienced operator. The aim of this observational cohort study was to investigate whether adding guidance markers on a US system would increase the accuracy of US-guided needle tip placement compared to no guidance markers. METHODS: A total of 18 physicians and 12 nurses familiar with US-guided vascular access volunteered to participate...
November 8, 2016: Journal of Vascular Access
https://www.readbyqxmd.com/read/27827521/ultrasonography-for-neuraxial-blocks-a-review-of-the-evidence
#6
Maria F Elgueta, Silvia Duong, Roderick J Finlayson, De Qh Tran
INTRODUCTION: This narrative review summarizes the evidence derived from randomized controlled trials (RCTs) pertaining to the use of adjunctive ultrasonography (US) for neuraxial blocks. EVIDENCE ACQUISITION: The literature search was conducted using the MEDLINE, EMBASE and PUBMED databases. For the MEDLINE and EMBASE searches, the MESH terms "ultrasonography" and key word "ultrasound" were queried; using the operator "and", they were combined with the MESH terms "neuraxial block", "epidural anesthesia", "epidural analgesia", "spinal anesthesia", "spinal analgesia", "intrathecal anesthesia", "intrathecal analgesia", "caudal anesthesia", and "caudal analgesia"...
November 9, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27826460/percutaneous-release-of-the-first-dorsal-extensor-compartment-a-cadaver-study
#7
Ali Güleç, Faik Türkmen, Serdar Toker, Mehmet Ali Acar
BACKGROUND: To evaluate the efficiency of the percutaneous 18-G needle technique in releasing the fibro-osseous sheath over the first dorsal extensor compartment of the hand. METHODS: Using anatomic landmarks, percutaneous release was performed with an 18-G needle on 48 wrists of 24 cadavers. The specimens were then dissected and examined for the completeness of the first dorsal extensor compartment release and any tendon or neurovascular injuries. The tunnel length, number of abductor pollicis longus and extensor pollicis brevis tendons, presence of an intertendinous septum, and the effects of these parameters on percutaneous release were evaluated...
October 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27825433/advancement-of-mr-and-pet-mr-in-prostate-cancer
#8
REVIEW
Liza Lindenberg, Mark Ahlman, Baris Turkbey, Esther Mena, Peter Choyke
Multiparametric magnetic resonance (mpMRI) imaging has assumed a larger role in the diagnosis and management of prostate cancer. The current method of detecting prostate cancer relies on blind systematic biopsy, guided only by transrectal ultrasound that generally directs the needle biopsy to sextants of the prostate rather than specific lesions. MpMRI is playing an increasing role in the detection of primary cancer as it can visualize cancers and direct biopsies. However, even mpMRI is inherently nonspecific and numerous biopsies performed under MR guidance prove to be negative...
November 2016: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/27811527/a-cadaveric-study-evaluating-the-feasibility-of-an-ultrasound-guided-diagnostic-block-and-radiofrequency-ablation-technique-for-sacroiliac-joint-pain
#9
Shannon L Roberts, Robert S Burnham, Anne M Agur, Eldon Y Loh
BACKGROUND AND OBJECTIVES: Ultrasound (US)-guided diagnostic block/radiofrequency ablation (RFA) along the lateral sacral crest (LSC) has been proposed for managing sacroiliac joint (SIJ) pain. We sought to investigate (1) ease of visualization of bony landmarks using US; (2) consistency of US-guided needle placement along the LSC; and (3) percentage of the posterior sacral network (PSN) innervating the SIJ complex that would be captured if an RFA strip lesion were created between the needles...
November 2, 2016: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27798452/double-injection-technique-assisted-by-a-nerve-stimulator-for-ultrasound-guided-supraclavicular-brachial-plexus-block-results-in-better-distal-sensory-motor-block-a-randomised-controlled-trial
#10
Quehua Luo, Weifeng Yao, HaiHua Shu, Ming Zhong
BACKGROUND: To evaluate the efficacy of a nerve stimulator when used with ultrasound-guided double injection in supraclavicular brachial plexus block. OBJECTIVES: We hypothesised that targeting the inferior trunk of the plexus guided by a nerve stimulator would obtain a higher success rate of ulnar nerve blockade than the traditional double-injection technique. DESIGN: A blinded randomised controlled study. SETTING: Conducted at the University Hospital from October 2015 to January 2016...
October 27, 2016: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/27795625/a-prospective-audit-of-complications-in-100-consecutive-pediatric-percutaneous-renal-biopsies-done-under-real-time-ultrasound-guidance
#11
R Sinha, B Maji, B Sarkar, S Meur
Despite being a common procedure, percutaneous renal biopsy (PRB) carries the potential for complications. The British Association of Paediatric Nephrologist (BAPN) has published standards for pediatric PRB. As Indian data are scarce, we conducted a prospective audit of 100 consecutive pediatric renal biopsies (60% males) under real-time ultrasound guidance. Nephrotic syndrome was the most common indication for PRB (68%) with minimal change disease (30%) and focal segmental glomerulosclerosis (25%) being the most common histopathological lesions...
September 2016: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/27762601/stereotactic-ct-guided-percutaneous-microwave-ablation-of-liver-tumors-with-the-use-of-high-frequency-jet-ventilation-an-accuracy-and-procedural-safety-study
#12
Jennie Engstrand, Grzegorz Toporek, Piotr Harbut, Eduard Jonas, Henrik Nilsson, Jacob Freedman
OBJECTIVE: The purpose of the present study is to evaluate the accuracy and safety of antenna placement performed with the use of a CT-guided stereotactic navigation system for percutaneous ablation of liver tumors and to assess the safety of high-frequency jet ventilation for target motion control. MATERIALS AND METHODS: Twenty consecutive patients with malignant liver lesions for which surgical resection was contraindicated or that were not readily visible on ultrasound or not accessible by ultrasound guidance were included in the study...
October 20, 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27749354/continuous-peripheral-nerve-blocks-an-update-of-the-published-evidence-and-comparison-with-novel-alternative-analgesic-modalities
#13
Brian M Ilfeld
A continuous peripheral nerve block (CPNB) consists of a percutaneously inserted catheter with its tip adjacent to a target nerve/plexus through which local anesthetic may be administered, providing a prolonged block that may be titrated to the desired effect. In the decades after its first report in 1946, a plethora of data relating to CPNB was published, much of which was examined in a 2011 Anesthesia & Analgesia article. The current update is an evidence-based review of the CPNB literature published in the interim...
October 3, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27747222/sacro-iliac-joint-sensory-block-and-radiofrequency-ablation-assessment-of-bony-landmarks-relevant-for-image-guided-procedures
#14
Trevor J G Robinson, Shannon L Roberts, Robert S Burnham, Eldon Loh, Anne M Agur
Image-guided sensory block and radiofrequency ablation of the nerves innervating the sacro-iliac joint require readily identifiable bony landmarks for accurate needle/electrode placement. Understanding the relative locations of the transverse sacral tubercles along the lateral sacral crest is important for ultrasound guidance, as they demarcate the position of the posterior sacral network (S1-S3 ± L5/S4) innervating the posterior sacro-iliac joint. No studies were found that investigated the spatial relationships of these bony landmarks...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27744399/success-rate-and-utility-of-ultrasound-guided-synovial-biopsies-in-clinical-practice
#15
Aurélie Najm, Carl Orr, Marie-Françoise Heymann, Géraldine Bart, Douglas J Veale, Benoît Le Goff
OBJECTIVE: The utility of synovial biopsy in increasing our understanding of the pathogenesis of inflammatory arthropathies, as well as in evaluating treatments, is well established. Ultrasound (US) allows synovial assessment and therefore assists in biopsying synovial tissue in a safe and well-tolerated manner. This study's objectives were to (1) determine the rate of success in retrieving synovial tissue using US guidance, (2) describe the indications for US-guided synovial biopsies in the clinical setting, (3) determine how frequently the synovial biopsy can lead to a clear diagnosis, and (4) assess the quality of the synovial tissue obtained using this technique...
December 2016: Journal of Rheumatology
https://www.readbyqxmd.com/read/27727027/intra-operative-navigation-of-a-3-dimensional-needle-localization-system-for-precision-of-irreversible-electroporation-needles-in-locally-advanced-pancreatic-cancer
#16
L Bond, B Schulz, T VanMeter, R C G Martin
INTRODUCTION: Irreversible electroporation (IRE) uses multiple needles and a series of electrical pulses to create pores in cell membranes and cause cell apoptosis. One of the demands of IRE is the precise needle spacing required. Two-dimensional intraoperative ultrasound (2-D iUS) is currently used to measure inter-needle distances but requires significant expertise. This study evaluates the potential of three-dimensional (3-D) image guidance for placing IRE needles and calculating needle spacing...
September 29, 2016: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27727021/automatic-segmentation-and-probe-guidance-for-real-time-assistance-of-ultrasound-guided-femoral-nerve-blocks
#17
Erik Smistad, Daniel Høyer Iversen, Linda Leidig, Janne Beate Lervik Bakeng, Kaj Fredrik Johansen, Frank Lindseth
Ultrasound-guided regional anesthesia can be challenging, especially for inexperienced physicians. The goal of the proposed methods is to create a system that can assist a user in performing ultrasound-guided femoral nerve blocks. The system indicates in which direction the user should move the ultrasound probe to investigate the region of interest and to reach the target site for needle insertion. Additionally, the system provides automatic real-time segmentation of the femoral artery, the femoral nerve and the two layers fascia lata and fascia iliaca...
January 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27720520/three-dimensional-ultrasound-guided-real-time-midline-epidural-needle-placement-with-epiguide-a-prospective-feasibility-study
#18
Parmida Beigi, Paul Malenfant, Abtin Rasoulian, Robert Rohling, Alison Dube, Vit Gunka
Current 2-D ultrasound technology is unable to perform a midline neuraxial needle insertion under real-time ultrasound guidance using a standard needle and without an assistant. The aim of the work described here was to determine the feasibility of a new technology providing such capability, starting with a study evaluating the selected puncture site. A novel 3-D ultrasound imaging technique was designed using thick-slice rendering in conjunction with a custom needle guide (3DUS + Epiguide). A clinical feasibility study evaluated the ability of 3DUS + Epiguide to identify the epidural needle puncture site for a midline insertion in the lumbar spine...
January 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27686645/-recent-progress-in-mri-ultrasound-fusion-for-guidance-of-targeted-prostate-biopsy
#19
Z E Zhou, W G Yan, Y Zhou, Z G Ji, H Z Li
Prostate cancer is currently diagnosed by prostate biopsy performed by the transrectal ultrasound-guided technique. However, overdetection of clinical insignificant tumours and missed detection of clinical significant tumours have become problematic. MRI of the prostate, particularly if performed with multiparametric imaging, is capable of detecting clinical significant prostate cancer, which has brought the opportunity to use those images as targets for needle biopsy. Three methods of fusing MRI for targeted biopsy have been recently described: MRI-ultrasound fusion, MRI-MRI fusion ('in-bore' biopsy) and cognitive fusion...
October 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27676805/internal-obturator-muscle-proposition-of-a-transforaminal-way-under-ultrasound-guidance-for-botulinum-toxin-injections
#20
Fabrice Michel, Arnaud Dupeyron, Jean Jacques Labat, Etienne Aleton, Bernard Parratte
OBJECTIVE: Among pelvitrochanteric muscles, the internal obturator muscle is implicated in some pain projected at the buttock or perineum. Even though the pathophysiology is not completely understood, its responsibility is often held in clinical practice and in the literature due to effectiveness of botulinum toxin injections, constituting a therapeutic test. The objective is to enhance the couple ultrasound/EMG in difficult injections. MATERIAL/PATIENTS AND METHODS: Eighteen patients were treated in the physical medicine department (Besançon) from September 2015 to February 2016 for gluteal or perineal pain suspected to be related to abnormal spasm of the internal obturator muscle...
September 2016: Annals of Physical and Rehabilitation Medicine
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