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intra-operative ultrasound

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https://www.readbyqxmd.com/read/28733748/preoperative-botulinum-toxin-a-enabling-defect-closure-and-laparoscopic-repair-of-complex-ventral-hernia
#1
Omar Rodriguez-Acevedo, Kristen E Elstner, Anita S W Jacombs, John W Read, Rodrigo Tomazini Martins, Fernando Arduini, Michael Wehrhahm, Colette Craft, Peter H Cosman, Anthony N Dardano, Nabeel Ibrahim
INTRODUCTION: Operative management of complex ventral hernia still remains a significant challenge for surgeons. Closure of large defects in the unprepared abdomen has serious pathophysiological consequences due to chronic contraction and retraction of the lateral abdominal wall muscles. We report outcomes of 56 consecutive patients who had preoperative Botulinum toxin A (BTA) abdominal wall relaxation facilitating closure and repair. METHODS: This was a prospective observational study of 56 patients who underwent ultrasound-guided BTA into the lateral abdominal oblique muscles prior to elective ventral hernia repair between November 2012 and January 2017...
July 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28729007/the-feasibility-of-point-of-care-ankle-ultrasound-examination-in-patients-with-recurrent-ankle-sprain-and-chronic-ankle-instability-comparison-with-magnetic-resonance-imaging
#2
Sun Hwa Lee, Seong Jong Yun
OBJECTIVE: To evaluate the feasibility of point-of-care ankle ultrasound compared with magnetic resonance imaging (MRI) for diagnosing major ligaments and Achilles tendon injuries in patients with recurrent ankle sprain and chronic instability, and to evaluate inter-observer reliability between an emergency physician and a musculoskeletal radiology fellow. MATERIAL AND METHODS: A prospective cross-sectional study was conducted in an emergency department. Patients with recurrent ankle sprain and chronic instability were recruited...
July 13, 2017: Injury
https://www.readbyqxmd.com/read/28717629/ultrasound-measures-of-tendon-thickness-intra-rater-inter-rater-and-inter-machine-reliability
#3
María Elena Del Baño-Aledo, Jacinto Javier Martínez-Payá, José Ríos-Díaz, Silvia Mejías-Suárez, Sergio Serrano-Carmona, Ana de Groot-Ferrando
BACKGROUND: Ultrasound imaging is often used by physiotherapists and other healthcare professionals but the reliability of image acquisition with different ultrasound machines is unknown. The objective was to compare the intra-rater, inter-rater and intermachine reliability of thickness measurements of the plantar fascia (PF), Achilles tendon (AT), patellar tendon (PT) and elbow common extensor tendon (ECET) with musculoskeletal ultrasound imaging (MSUS). METHODS: Tendon thickness was measured in four anatomical structures (14 participants, 28 images per tendon) by two sonographers and with two different ultrasound machines...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28710605/current-clinical-applications-of-coronary-optical-coherence-tomography
#4
REVIEW
Teruyoshi Kume, Shiro Uemura
Optical coherence tomography (OCT) is an intra-coronary diagnostic technique that provides detailed imagings of blood vessels in the current cardiac catheterization laboratory. The higher resolution of OCT often provides superior delineation of each structure compared with intravascular ultrasound (IVUS), and it can reliably visualize the microstructure of normal and diseased arteries. The capabilities of OCT are well suited for the identification of calcified plaque and neointima formation after stent implantation...
July 14, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28693906/reproducible-computer-assisted-quantification-of-myocardial-perfusion-with-contrast-enhanced-ultrasound
#5
Yuanwei Li, Navtej Chahal, Roxy Senior, Meng-Xing Tang
Myocardial perfusion can be quantified by myocardial contrast echocardiography (MCE) and is used for the diagnosis of coronary artery disease (CAD). However, existing MCE quantification software is highly operator dependent and has poor reproducibility and ease of usage. The aim of this study was to develop robust and easy-to-use software that can perform MCE quantification accurately, reproducibly and rapidly. The developed software has the following features: (i) semi-automatic segmentation of the myocardium; (ii) automatic rejection of MCE data with poor image quality; (iii) automatic computation of perfusion parameters such as myocardial blood flow (MBF)...
July 7, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28684867/combined-magnetomotive-ultrasound-pet-ct-and-mr-imaging-of-68-ga-labelled-superparamagnetic-iron-oxide-nanoparticles-in-rat-sentinel-lymph-nodes-in-vivo
#6
Maria Evertsson, Pontus Kjellman, Magnus Cinthio, Roger Andersson, Thuy A Tran, Rene In't Zandt, Gustav Grafström, Hanna Toftevall, Sarah Fredriksson, Christian Ingvar, Sven-Erik Strand, Tomas Jansson
Current methods for intra-surgical guidance to localize metastases at cancer surgery are based on radioactive tracers that cause logistical challenges. We propose the use of a novel ultrasound-based method, magnetomotive ultrasound (MMUS) imaging that employ a nanoparticle-based contrast agent that also may be used for pre-operative PET/MRI imaging. Since MMUS is radiation free, this eliminates the dependence between pre- and intra-operative imaging and the radiation exposure for the surgical staff. This study investigates a hypothetical clinical scenario of pre-operative PET imaging, combined with intra-operative MMUS imaging, implemented in a sentinel lymph node (SLN) rat model...
July 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28664487/comparative-us-mri-evaluation-of-the-insall-salvati-index
#7
Francesco Giovagnorio, Matteo Olive, Alice Casinelli, Elena Maggini, Cristina Presicci, Celijeta Tominaj, Paolo Ricci
PURPOSE: To investigate whether the universally accepted range of normal patellar height ratio derived from MRI for the Insall-Salvati (IS) method could be similarly applied to ultrasound (US). MATERIALS AND METHODS: This study included 52 patients (age range 11-75 years) who underwent a bi-modality (US and MRI) examination, with a total of 60 knees evaluated. IS index (ratio of the patella tendon length to length of the patella) was acquired with both methods...
June 29, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28660071/comparison-of-two-dimensional-strain-analysis-using-vendor-independent-and-vendor-specific-software-in-adult-and-pediatric-patients
#8
Shafkat Anwar, Kazuaki Negishi, Allen Borowszki, Patrick Gladding, Zoran B Popović, Francine Erenberg, James D Thomas
INTRODUCTION: Two-dimensional strain analysis is a powerful analysis modality, however, clinical utilization has been limited by variability between different analysis systems and operators. We compared strain in adults and children using vendor-specific and vendor-independent software to evaluate variability. METHODS: One hundred and ten subjects (50/110 pediatric, 80/110 normal left ventricular function) had echocardiograms with a General Electric ultrasound scanner between September 2010 and January 2012...
January 2017: JRSM Cardiovascular Disease
https://www.readbyqxmd.com/read/28650903/thigh-ultrasound-monitoring-identifies-decreases-in-quadriceps-femoris-thickness-as-a-frequent-observation-in-critically-ill-children
#9
Frederic V Valla, David K Young, Muriel Rabilloud, Uvaraj Periasami, Manoj John, Florent Baudin, Carole Vuillerot, Aurélie Portefaix, Deborah White, Jenna A Ridout, Rosan Meyer, Bénédicte Gaillard Le Roux, Etienne Javouhey, Nazima Pathan
OBJECTIVES: Significant muscle wasting develops in critically ill adults, with subsequent worse outcomes. In the pediatric setting, occurrence and effects of muscle wasting are undescribed; this is in part due to a lack of validated, objective methods for assessing muscle wasting. A single measurement of quadriceps femoris thickness has failed to show consistent reproducibility. We hypothesized that averaging repeated measurements could afford good reproducibility to allow for quadriceps femoris thickness decline detection and monitoring...
June 23, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28648650/planning-execution-and-follow-up-for-endovascular-aortic-aneurysm-repair-using-a-highly-restrictive-iodinated-contrast-protocol-in-patients-with-severe-renal-disease
#10
E Gallitto, G L Faggioli, M Gargiulo, A Freyrie, R Pini, C Mascoli, S Ancetti, V Vento, A Stella
BACKGROUND: The cumulative amount of iodinated-contrast-medium necessary for EVAR planning, operative procedure and subsequent follow-up is a threat for the onset of end stage renal disease in patients with pre-operative impaired kidney function. Purpose of this study is to describe a mini-invasive approach aimed to minimize the exposure of these patients to iodinated-contrast-medium and the subsequent risk of renal function worsening. METHODS: From 2012 to 2015, all patients with abdominal aortic aneurysm (AAA) at high-surgical risk and fit for standard endovascular repair (simple aortic-iliac anatomy: proximal and distal neck length ≥15mm, no severe angulation), underwent EVAR through the following "near-zero contrast" approach, if their glomerular filtration rate (GFR) was <30 mL/min: pre-operative planning was performed by non-contrast enhanced computed tomography (CT) and duplex-ultrasound (DU); the origin of renal/hypogastric arteries and aortic bifurcation was evaluated and matched with vertebral bone landmarks and the endograft deployed accordingly, using < 20cc of isotonic iodinate-contrast-medium and contrast-enhancement-DU (CEUS)...
June 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28634015/three-dimensional-3d-printed-model-for-deep-infiltrating-endometriosis-die-a-case-report
#11
Mobolaji O Ajao, Nisse V Clark, Tatiana Kelil, Sarah L Cohen, Jon I Einarsson
The combination of a thorough physical exam and imaging with either MRI or pelvic ultrasound are important in pre-operative planning for deep infiltrating endometriosis. Nevertheless, the 2-dimensional rendering of the pathology by imaging does not always accurately represent intra-operative findings. An in-depth topographical relationship and extent of surrounding tissue invasion can be better appreciated from 3-dimensional modeling. A 49 year old patient with history of endometriosis and persistent pain underwent pre-operative imaging with MRI that was consistent with infiltrating endometriosis...
June 17, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28629568/repeatability-of-estimated-fetal-weight-comparison-between-mr-imaging-versus-2d-ultrasound-in-at-and-near-term-patients
#12
Caroline Kadji, Margaux F Camus, Elisa Bevilacqua, Mieke M Cannie, Teresa Cos Sanchez, Jacques C Jani
INTRODUCTION: Our aim was to evaluate the intra- and inter-observer variability and the impact of operator experience on the estimation of fetal weight (EFW) as measured by 2-dimensional ultrasound (2D-US) and magnetic resonance (MR) imaging. MATERIAL AND METHODS: We estimated fetal weight in 46 singleton pregnancies at 35.6-41.4 weeks gestation using 2D-US according to the Hadlock formula and using MR imaging according to the equation developed by Baker. Each examination was performed twice, once by an inexperienced operator and once by an experienced operator...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28617885/the-role-of-wireless-capsule-endoscopy-wce-in-the-detection-of-occult-primary-neuroendocrine-tumors
#13
Manuele Furnari, Andrea Buda, Gabriele Delconte, Davide Citterio, Theodor Voiosu, Giovanni Ballardini, Flaminia Cavallaro, Edoardo Savarino, Vincenzo Mazzaferro, Emanuele Meroni
BACKGROUND AND AIMS: Neuroendocrine tumors (NETs) are a heterogeneous group of neoplasms with unclear etiology that may show functioning or non-functioning features. Primary tumor localization often requires integrated imaging. The European Neuroendocrine Tumors Society (ENETS) guidelines proposed wireless-capsule endoscopy (WCE) as a possible diagnostic tool for NETs, if intestinal origin is suspected. However, its impact on therapeutic management is debated. We aimed to evaluate the yield of WCE in detecting intestinal primary tumors in patients showing liver NET metastases when first-line investigations are inconclusive...
June 2017: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/28586581/difficulties-in-laparoscopic-cholecystectomy-conversion-versus-surgeon-s-failure
#14
Aun Ali, Summaya Saeed, Rabel Khawaja, Sunil Sadruddin Samnani, Farah Naz Farid
BACKGROUND: Laparoscopic cholecystectomy is considered to be gold standard treatment for symptomatic gall stones. Despite several benefits there are still disadvantages of laparoscopic cholecystectomy in difficult cases where anatomy is disturbed even in experienced hand. Aim of this study is to identify advantages of early conversion to open cholecystectomy in difficult cases and how it should not be associated with surgeon's failure. METHODS: Observational study was conducted at tertiary care hospital of Karachi, Pakistan from January 2012 till June 2015...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28575490/ultrasound-guided-versus-conventional-femoral-venipuncture-for-catheter-ablation-of-atrial-fibrillation-a-multicentre-randomized-efficacy-and-safety-trial-ultra-fast-trial
#15
Kenichiro Yamagata, Dan Wichterle, Tomáš Roubícek, Patrik Jarkovský, Yuriko Sato, Takamichi Kogure, Petr Peichl, Petr Konecný, Helena Jansová, Pavel Kucera, Bashar Aldhoon, Robert Cihák, Yoichi Sugimura, Josef Kautzner
Aims: Complications of catheter ablation for atrial fibrillation (AF) are frequently related to vascular access. We hypothesized that ultrasound-guided (USG) venipuncture may facilitate the procedure and reduce complication rates. Methods and results: We conducted a multicentre, randomized trial in patients undergoing catheter ablation for AF on uninterrupted anticoagulation therapy. The study enrolled consecutive 320 patients (age: 63 ± 8 years; male: 62%) and were randomized to USG or conventional venipuncture in 1:1 fashion...
May 30, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28571673/a-toe-flexion-nirs-assisted-test-for-rapid-assessment-of-foot-perfusion-in-peripheral-arterial-disease-feasibility-validity-and-diagnostic-accuracy
#16
F Manfredini, N Lamberti, T Rossi, F Mascoli, N Basaglia, P Zamboni
OBJECTIVES: Feasibility, validity, and diagnostic accuracy of a non-invasive dynamic ambulatory test were assessed with near infrared spectroscopy (NIRS) evaluating foot perfusion in peripheral arterial disease (PAD). METHODS: This was a prospective observational study. Eighty PAD patients (63 males, 71 ± 9 years), including 41 patients with coexisting diabetes, participated. Thirteen healthy subjects (8 males, 26 ± 8 years) were also studied by echo colour Doppler providing 160 diseased and 26 non-diseased limbs...
May 29, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28567101/ascites-matters
#17
REVIEW
Velauthan Rudralingam, Clare Footitt, Ben Layton
The excess accumulation of intra-peritoneal fluid, referred to as ascites, is an important clue that points to a significant underlying illness. This may be due to a pathological event within the peritoneal cavity or secondary to an underlying systemic condition. Ascites is broadly classified into transudate and exudate, based on protein content, with a potential wide range of differential diagnoses. Traditionally, computed tomography has been regarded as the imaging modality of choice to demonstrate ascites and diagnose the underlying cause...
May 2017: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/28513192/the-haemodynamic-effect-of-an-adjustable-band-in-an-arteriovenous-fistula
#18
M Sturm, H Lee, S Thomas, T Barber
A number of treatment approaches exist for excessive flowrate arteriovenous fistulae. Banding has a number of advantages, yet there is concern over its use due to reported high post-surgery thrombosis rates. A computational study is conducted of a new technique, to elucidate the hemodynamics present in the process. The key improvement involves the use of an adjustable band which can be used to optimise the flowrate during the surgery. The pressure and flowrate changes are apparent from the computational results and the computational results also demonstrate that further optimization may be possible...
May 17, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28505246/effects-of-long-term-exogenous-testosterone-administration-on-ovarian-morphology-determined-by-transvaginal-3d-ultrasound-in-female-to-male-transsexuals
#19
Mirte R Caanen, Nienke E Schouten, Esther A M Kuijper, Joukje van Rijswijk, Marleen H van den Berg, Eline van Dulmen-den Broeder, Annelies Overbeek, Flora E van Leeuwen, Mick van Trotsenburg, Cornelis B Lambalk
STUDY QUESTION: Does long-term exogenous testosterone administration result in polycystic ovarian morphology (PCOM), determined by (3D) transvaginal ultrasound (TVU) in female-to-male transsexuals (FtMs). SUMMARY ANSWER: Long-term exogenous testosterone administration in FtMs does not result in PCOM determined by (3D) TVU. WHAT IS KNOWN ALREADY: The role of androgens in the pathophysiology of polycystic ovary syndrome (PCOS) is still unclear...
May 13, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28501371/endometriosis-on-the-uterosacral-ligament-a-marker-of-ureteral-involvement
#20
Raquel Lima, Helizabet Abdalla-Ribeiro, Ana Luisa Nicola, Aline Eras, Anna Lobao, Paulo Ayroza Ribeiro
OBJECTIVE: To evaluate the association between ultrasound measurements of endometriosis nodules on the uterosacral ligament (USL) and the risk of ureteral involvement, as well as to assess whether associations with other ultrasound variables increase the sensitivity and specificity of the diagnosis of ureteral endometriosis. DESIGN: Cross-sectional, observational study. SETTING: University hospital. PATIENT(S): Four hundred sixty-three women with deep infiltrating endometriosis (DIE)...
June 2017: Fertility and Sterility
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