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Aim. To present the experience in performing posterior separation plasty according to Yu. Novitskiy, to evaluate the efficacy and safety of the technique. Methods. The results of treatment of 22 patients with giant middle postoperative ventral hernias, treated in the surgical department №1 of Kazan City clinical hospital №7 in 2013-2016, were analyzed. 9 patients had open posterior separation plasty of the abdominal wall in Yu. Novitskiy’s modification performed (study group). Comparison group included 13 patients who had standard tension-free inlay-plasty. Results. The average duration of surgery in the study group was 143.9±10.7 min, in comparison group - 136.6±12.1 min. In the study group there were no serious complications in the immediate postoperative period. In 3 cases at control ultrasound examination clinically insignificant seromas were found which did not require additional treatment and self-resolved within the period of 3 weeks. In one case there was lymphorrhea from the wound for 9 days. Healing of a surgical wound in all cases was by primary intention. Average hospital stay was 10.2±0.6 days. There were no lethal outcomes. Recurrence of the disease in the observed period was not registered. Conclusion. Posterior separation plasty of the abdominal wall in Yu. Novitskiy’s modification is a safe and effective technique that allows recommending this surgery to the surgeons operating patients with giant postoperative ventral hernias.

Orbital cellulitis is an infrequent but serious complication of sinus infections in children, as was the case of a 7-year-old who presented to the emergency room with ultrasound signs of preseptal cellulitis. Despite a well conducted antibiotic treatment a control ultrasound demonstrated associated signs of retro-septal extension. This case brings to light the essential role of ultrasound in suspected cellulitis, as a mean to differentiate between preseptal cellulitis and retroseptal (orbital) cellulitis. In the paediatric population ultrasound should be the first intention exam to diagnose the extension of the illness, and help guide the management and follow-up of the patients.

Approximately 50% of people with Whiplash Associated Disorders (WAD) report longstanding symptoms. The upper trapezius is commonly painful yet its mechanical properties are not fully understood.This study examined the deformation of different depths of the upper trapezius muscle during a scapular elevation task (shoulder shrugging) before and following loaded arm abduction.A cross-sectional case-control study of 36 people (26 female and 10 male, mean age 38 (SD 11)) with chronic WAD and 36 controls, matched for age and gender. Real-time ultrasound recordings of upper trapezius were taken during both scapular elevation tasks. Post-process speckle tracking analysis was undertaken of three different sections of the upper trapezius muscle (superficial, middle, deep).The WAD group had lower deformation of the superficial section of the upper trapezius compared to the control group in both concentric and eccentric phases of scapular elevation (p 0.05) especially before the loaded arm abduction. After arm abduction, the deformation of the trapezius was reduced in both groups but only significantly in the WAD-group (p = 0.03). Within-group analysis revealed that the control group least engaged the deep section of upper trapezius during the task (p 0.01).This study, measuring mechanical deformation of the upper trapezius during a scapular elevation task indicates that persons with WAD may display different patterns in engagement of the muscle sections than those in the control group. Further research is needed to replicate and understand the reasons for and implications of this possible change in motor strategy within upper trapezius. Clinical Trials.gov, Number: NCT01547624.

The authors analyzed the single-center experience of treatment of 72 patients with abdominal aortic aneurisms and severe accompanied pathology. The aneurisms were repaired by stentgrafts. All the patients had abdominal aortic aneurisms with the diameters from 41 to 84 mm against the background of severe somatic pathology. It was a contraindication to planned open surgery. An installation of stent-graft was successful in all 72 follow-ups. It wasn’t necessary to use a conversion to open surgery. The follow-up period consisted of 44,6±2,1 months. Control ultrasound and computer tomography studies hadn’t revealed an increase of aneurism sack sizes or «leakages». A reduction of abdominal aortic aneurism sizes was noted in 37 patients on 4-5% during first year after operation. The stentgraft implantation extends the possibilities of abdominal aortic aneurism treatment for patients from a high surgical risk group.

Using broadband noise as a measure of cavitation activity, this study determined the kinetics of cavitation during sonication of Optison ® contrast agent and tested whether cellular bioeffects can be predicted by cavitation dose. Cell suspensions were exposed to ultrasound at varying acoustic frequency, pressure, exposure time, Optison ® concentration and cell type to obtain a broad range of bioeffects, i.e., intracellular uptake and loss of viability, as quantified by flow cytometry. We found that cavitation activity measured by broadband noise increased and peaked within 20 ms and then decayed with a half-life of tens to hundreds of milliseconds. Intracellular uptake and loss of viability correlated well with the cavitation dose determined by the time integral of broadband noise magnitude. These results demonstrate that broadband noise correlates with bioeffects over a broad range of experimental conditions, which suggests a noninvasive feedback method to control ultrasound's bioeffects in real time. (E-mail: prausnitz@gatech.edu) © 2006 World Federation for Ultrasound in Medicine & Biology.

Previous studies have shown altered neck muscle function in individuals with chronic whiplash associated disorder (WAD). However, we lack real-time investigations with non-invasive methods that can distinguish between the different ventral neck muscle layers. This study investigated deformations and deformation rates in the sternocleidomastoid (SCM), longus capitis (Lcap), and longus colli (Lco) muscles with real-time ultrasonography. Twenty-six individuals with WAD were compared with 26 controls, matched for age and sex. Ultrasound imaging of the SCM, Lcap, and Lco were recorded during 10 repetitive arm elevations. The first and tenth arm elevations were post-process analyzed with speckle tracking. There were few significant differences in the deformations or deformation rates in the SCM, Lcap, and Lco between the WAD and control group. In controls, deformations and deformation rates showed linear positive relationships between SCM/Lcap, SCM/Lco, and Lcap/Lco which increased from the first arm elevation (R(2) = 0.14-0.70); to the tenth arm elevation (R(2) = 0.51-0.71). The WAD group showed similar or weaker linear relationship (R(2)

Porpoises are well known to emit directional ultrasound beams for detecting and tracking preys; however, how they produce and manipulate directional beams are challenging. Here, we investigated physical mechanism of ultrasound beam formation and control of finless porpoise (N. a. sunameri) by using an integrated scheme of computed tomography, tissue and field measurements, and numerical modeling. The results showed that complex acoustic structures in the porpoise’s forehead contributed to producing directional acoustic field. Furthermore, we demonstrated that the skull, air sacs, connective tissue, muscle, and melon constituted a gradient index (GRIN) structure whose density and sound velocity are positively correlated, and thus regulated the directional beam. The removal or compression deformation of the forehead tissues decentralizes energy and widens sound beam, indicating that the forehead tissues as a tunable natural GRIN material significantly impact beam patterns of the finless porpoise. The result...

Objective To determine what proportion of placentas described as low lying or marginal at the mid-pregnancy ultrasound examination are still so described in the third trimester, necessitating delivery by Caesarean section. Methods A retrospective chart review of all women delivering at the Centre Hospitalier Universitaire de Sherbrooke (CHUS) from April 1, 2009, to March 31, 2011, was undertaken, and placental location at the mid-pregnancy ultrasound examination was noted. For all cases in which the placenta was described as previa (complete, partial, marginal, or low lying), the control third trimester ultrasound examination, when performed, was revised and so was the mode of delivery, vaginal or Casearean section. Results During the study period, 5618 women delivered at the CHUS, and 4884 (86.9%) of these women had an ultrasound examination performed at the CHUS at mid-pregnancy. The placenta was described as low lying or marginal in 412 cases (8.4%). A third trimester control examination was performed in 376 cases (91.2%), and the placenta was still described as low lying or marginal in six cases (1.5%). Four of these 412 women (0.9%) had Caesarean sections for placental reasons. Conclusion The vast majority (98.5%) of women with low-lying or marginal placentas at the mid-pregnancy ultrasound examination had normally located placentas in the third trimester, and less than 1% of these women had a Caesarean section for reasons that could be associated with the placental location.

Endorectal ultrasound (ERUS) imaging is a complex process using electronic devices to control ultrasound waves and produce images of anatomic structures. It is a simple, cheep and well-tolerated procedure that provides excellent images of rectal and anal canal wall and pelvic floor muscles together with surrounding organs and tissues. The direct imaging of anal canal and pelvic floor muscles with surrounding tissues allows one to identify sphincter defects, anorectal abscesses and fistulas as well as great variety of benign and malignant pathology of the pelvis. Basically, techniques for ERUS are very similar, but there are some slight modifications regarding equipment, indications, and localization of pathologic process. We describe the technique, indications, results and pitfalls of ERUS with the Bruel & Kjaer type 1850 endosonic probe with 7 and 10 MHz transducers in benign pelvic disorders. .