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Ultrasound IV

Marijke E B Kremer, Jessica F Althof, Joep P M Derikx, Robertine van Baren, Hugo A Heij, Marc H W A Wijnen, René M H Wijnen, David C van der Zee, L W Ernest van Heurn
BACKGROUND: Gross genetic causes for SCT are unknown; however, it might be associated with other abnormalities. We assessed the incidence of associated abnormalities in a large national cohort of neonates with SCT and aimed to identify predictive risk factors. PROCEDURE: The medical records were reviewed of 235 consecutive neonates with SCT treated at the six pediatric surgical centers in the Netherlands from 1970 to 2010. Potential risk factors for associated abnormalities analyzed included sex, gestational age, tumor-volume/histology and Altman-classification...
January 31, 2018: Journal of Pediatric Surgery
John Civale, Ian Rivens, Adam Shaw, Gail R Ter Haar
Characterisation of the spatial peak intensity at the focus of high intensity focused ultrasound (HIFU) transducers is difficult because of the risk of damage to hydrophone sensors at the high focal pressures generated. Hill et al (1994) provided a simple equation for estimating spatial-peak intensity for solid spherical bowl transducers using measured acoustic power and focal beamwidth. This paper demonstrates theoretically and experimentally that this expression is only strictly valid for spherical bowl transducers without a central (imaging) aperture...
February 13, 2018: Physics in Medicine and Biology
Nikita Naredi, Santosh Kumar Singh, Rajesh Sharma
Background: The vascularization status of ovarian follicles affects reproductive competence of oocytes and in turn embryo quality by regulating its oxygen supply. Transvaginal power Doppler ultrasound can noninvasively map this vascularity of the ovarian follicles. Thus, we aimed to study the association of perifollicular vascularity and pregnancy outcome in women while on treatment for an in vitro fertilization cycle. Material and Methods: A prospective study on 200 participants evaluated the vascularity of 1008 follicles on the day of oocyte retrieval to outline a map depicting perfusion of each follicle...
October 2017: Journal of Human Reproductive Sciences
John Graham Theisen, Nicolette E Deveneau, Anu Agrawal, Casey Kinman, Jeremy Gaskins, Kate Meriwether, Sean L Francis
OBJECTIVES: The purpose of this study was to evaluate the accuracy of portable bladder scanner postvoid residual (PVR) volume measurements in patients with pelvic organ prolapse. A secondary goal was to determine whether covariates such as bladder volume and stage of prolapse affect bladder scanner accuracy. STUDY DESIGN: Complex urodynamic studies were performed on 70 patients with stage II or greater prolapse. Complex urodynamic studies included measurement of maximum bladder capacity (MBC) as well as measurement of PVR by urethral catheterization before, and following, complex filling cystometry...
February 8, 2018: Female Pelvic Medicine & Reconstructive Surgery
Deepak Thapa, Deepanshu Dhiman, Vanita Ahuja, Satinder Gombar, Ravi K Gupta
Background: Recent literature has established the role of stellate ganglion block (SGB) for management of acute postoperative pain. The effects of dexmedetomidine as an adjuvant to lignocaine in a preoperative SGB for postoperative pain relief have not been evaluated so far. Methods: The following randomised, double-blinded, control trail included 54 patients scheduled for upper limb orthopaedic surgery under general anaesthesia. Preoperative ultrasound-guided (USG) SGB was performed in all patients...
February 2018: British Journal of Pain
Haisam Atta, Mohamed F Mostafa, Mahmoud Shalaby
Background: Transrectal ultrasound-guided prostate biopsy (TRUSPB) is considered the procedure of choice for the diagnosis of prostate cancer. Men undergoing this biopsy experience high psychological stress. Different studies recommend techniques as sedation, lidocaine gel intrarectally, periprostatic nerve block alone, or nitrous oxide inhalation as effective methods of analgesia during procedural-related pain or discomfort. We evaluated three techniques for pain relief during TRUSPB and evaluated if there was any increase in the incidence of complications when employing either technique...
January 2018: Saudi Journal of Anaesthesia
Khalid Al-Hourani, David Gamble, Paul Armstrong, Greg O'Neill, James Kirkpatrick
BACKGROUND: Fast and accurate diagnosis of conditions of the hand and wrist is essential in guiding management. We aimed to analyse the predictive value of ultrasound in identifying different pathologies in the hand and wrist by correlating pre-operative ultrasound findings with per-operative surgical findings. METHODS: We retrospectively reviewed the case notes of all patients under the care of the senior author on whom a hand/wrist ultrasound had been performed between January 2007-May 2013...
March 2018: Journal of Hand Surgery Asian-Pacific Volume
Agnese Persichetti, Enrico Di Stasio, Rinaldo Guglielmi, Giancarlo Bizzarri, Silvia Taccogna, Irene Misischi, Filomena Graziano, Lucilla Petrucci, Antonio Bianchini, Enrico Papini
Background: British Thyroid Association (BTA), American Thyroid Association (ATA) and American Association of Clinical Endocrinologists (AACE/ACE/AME) recommend for thyroid nodules an ultrasound (US)-based stratification of risk of malignancy. Aim of our study was to assess the diagnostic accuracy of US classification systems and their reliability for indication to fine-needle aspiration (FNA). Methods: Prospective study on 987 thyroid nodules consecutively referred for FNA...
February 1, 2018: Journal of Clinical Endocrinology and Metabolism
Federico Randi, Michael McDonald, Pat Duffy, Alan K Kelly, Patrick Lonergan
The aim of this study was to evaluate the relationship of body temperature fluctuations, as measured by external auditory canal temperature, to the onset of estrus and ovulation. Beef heifers (n = 44, mean age 23.5 ± 0.4 months, mean weight 603.3 ± 5.7 kg) were fitted with a Boviminder® ear tag 2 weeks before the start of the estrous synchronization protocol to allow acclimatization. The device recorded the temperature, accurate to 0.01° Fahrenheit, every 10 min and transmitted the data via a base station over the internet where it could be accessed remotely...
January 9, 2018: Theriogenology
C V Bishop, R L Stouffer, D L Takahashi, E C Mishler, M C Wilcox, O D Slayden, C A True
STUDY QUESTION: What are the impacts of elevated testosterone (T) and an obesogenic western-style diet (WSD), either independently or together, on fertility and metabolic adaptations of pregnancy in primates? SUMMARY ANSWER: Testosterone increases the time to achieve pregnancy, while a WSD reduces overall fertility, and the combination of testosterone and WSD additionally impairs glucose tolerance and causes pregnancy loss. WHAT IS KNOWN ALREADY: Both hyperandrogenemia and obesity are hallmarks of polycystic ovary syndrome, which is a leading cause of infertility among women worldwide...
February 1, 2018: Human Reproduction
Ming Wang, Hai-Liang Feng, Yu-Qin Liu, He Liu, Yu-Xin Jiang, Qing-Li Zhu, Qing Dai, Jian-Chu Li
RATIONALE AND OBJECTIVES: The objective of this study was to investigate the contrast-enhanced ultrasound (CEUS) characteristics of tumor angiogenesis in mouse mammary cancer. MATERIALS AND METHODS: Twenty-four mice were examined with ultrasound and CEUS at 2-12 days after implantation. Four to five mice were assessed daily, and one to three mice were then sacrificed for histology. All of the histologic slides were reviewed and correlated with CEUS findings. RESULTS: A total of 46 cases of ultrasound examination had been performed in 24 mice...
February 2, 2018: Academic Radiology
Gen Tsujio, Shinichiro Kashiwagi, Takaharu Hatano, Yuka Asano, Wataru Goto, Koji Takada, Satoru Noda, Tsutomu Takashima, Naoyoshi Onoda, Hisashi Motomura, Kosei Hirakawa, Masaichi Ohira
The rate of local recurrence after mastectomy is reportedly similar to that of one-stage reconstruction. Most recurrences are in the skin or chest wall, while recurrence in the reconstructed breast is rare and the causes are uncertain. We report a case of a 42-year-old female who underwent partial mastectomy for left breast cancer with cT4aN0M1(PUL), cStage IV after endocrine therapy 3 years ago. Histopathological diagnosis was solid-tubular carcinoma. She had been treated with only endocrine therapy but diagnosed with local recurrence in the left breast...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
Keith R Burgess, Samuel J E Lucas, Katie Me Burgess, Kate E Sprecher, Joseph Donnelly, Aparna S Basnet, Michael M Tymko, Trevor A Day, Kurt Jason Smith, Nia C S Lewis, Philip Ainslie
Earlier studies have indicated an important role for cerebral blood flow in the pathophysiology of central sleep apnea (CSA) at high altitude, but were not decisive. To test the hypothesis that pharmacologically altering cerebral blood flow (CBF) without altering arterial blood gas (ABGs) values would alter the severity of CSA at high altitude, we studied 11 healthy volunteers. (8M, 3F; 31{plus minus}7 years) in a randomized placebo-controlled single-blind study at 5,050 metres in Nepal. CBF was increased by intravenous (iv) acetazolamide (Az; 10mg/kg) plus iv dobutamine (Dob) infusion (2-5 ug/kg/min) and reduced by oral indomethacin (Indo; 100mg)...
February 1, 2018: Journal of Applied Physiology
L Tognetti, E Cinotti, G Tonini, C Habougit, F Cambazard, P Rubegni, J L Perrot
BACKGROUND: Cutaneous endometriosis (CE) is rare and its dermoscopic features were reported only in 3 patients. The aim of this study was to examine a case of pigmented CE with multiple non-invasive imaging techniques, to compare the obtained images with histopathology and to define their utility in an early diagnosis of the disease. CASE REPORT: We performed dermoscopy, high-frequency ultrasound (HFUS), in vivo and ex vivo reflectance confocal microscopy (RCM) of a pigmented CE arising on the caesarean scar of a phototype IV patient, along with histologic studies...
January 31, 2018: Skin Research and Technology
Federico Fusini, Francesco Langella, Alberto Busilacchi, Cosimo Tudisco, Antonio Gigante, Alessandro Massé, Salvatore Bisicchia
Background: Sonoelastography (SE) is a new ultrasound-based method adopted in an increased number of scientific reports to analyse normal and pathological tendons. The aim of this study is to provide a systematic overview of clinical applications of SE in normal and pathological tendons. Methods: A systematic research of PubMed, Ovid, and Cochrane Library electronic databases was performed according to PRISMA guideline. Two Authors searched and evaluated the articles independently; a third Author was involved to solve any disagreement...
July 2017: Muscles, Ligaments and Tendons Journal
Zachary Tataryn, Kenan Alkhalili, James T Kryzanski
Traditional posterior lumbar approaches in a transforaminal lumbar interbody fusion (TLIF) require subperiosteal dissection of bilateral paraspinal muscles to provide adequate exposure. This may traumatize the multifidus muscle and its afferent innervations leading to postoperative paraspinal muscle atrophy. Minimizing such intraoperative trauma has been identified as an important factor in the reduction of postoperative lumbar pain. An approach via a blunt dissection through Wiltse's plane, which lies between the longissimus and multifidus muscles, may minimize postoperative pain...
November 23, 2017: Curēus
Daan Renson, Koen Mermuys, Bert Vanmierlo, Francis Bonte, Petrus Van Hoonacker, Diederick Kerckhove, Bart Berghs, Jean F Goubau
Background  Surgical management of de Quervain's tenosynovitis is based on decompression of the first extensor compartment. A simple release of the first compartment can cause instability of the extensor pollicis brevis (EPB) and abductor pollicis longus (APL) tendons in zone seven of the extensors. The WHAT test (wrist hyperflexion and abduction of the thumb) is very effective in diagnosing this instability. Patients and Methods  In this retrospective monocentric study, we analyzed a case series of 10 patients all of whom underwent a reconstruction of the first extensor compartment using a retinacular graft because of symptomatic instability after decompression surgery...
February 2018: Journal of Wrist Surgery
Huong T Le-Petross, Linda M McCall, Kelly K Hunt, Elizabeth A Mittendorf, Gretchen M Ahrendt, Lee G Wilke, Karla V Ballman, Judy C Boughey
OBJECTIVE: The purpose of this study is to determine lymph node features on axillary ultrasound (US) images obtained after neoadjuvant chemotherapy that are associated with residual nodal disease in patients with initial biopsy-proven node-positive breast cancer. SUBJECTS AND METHODS: All patients had axillary US performed after neoadjuvant chemotherapy. Axillary US images were centrally reviewed for lymph node size, cortical thickness, and cortical morphologic findings (type I indicated no visible cortex; type II, a hypoechoic cortex ≤ 3 mm; type III, a hypoechoic cortex > 3 mm; type IV, a generalized lobulated hypoechoic cortex; type V, focal hypoechoic cortical lobulation; and type VI, a totally hypoechoic node with no hilum)...
January 30, 2018: AJR. American Journal of Roentgenology
Philip N Okafor, Kristi Swanson, Nilay Shah, Jayant A Talwalkar
BACKGROUND AND AIM: Optimal rectal cancer (RC) outcomes depend on accurate locoregional staging. We sought to describe the impact of endoscopic ultrasound (EUS) on RC treatment patterns and survival. METHODS: Using the Surveillance, Epidemiology, and End Results-Medicare database, we identified patients with RC between 2005 and 2007. We excluded patients with stage IV disease, those not enrolled in Medicare parts A and B, those enrolled in managed care, and those staged with PMRI (because of low numbers)...
January 26, 2018: Journal of Gastroenterology and Hepatology
Nikki Mulligan, Brookie M Best, Jiajia Wang, Edmund V Capparelli, Alice Stek, Emily Barr, Shelley L Buschur, Edward P Acosta, Elizabeth Smith, Nahida Chakhtoura, Sandra Burchett, Mark Mirochnick
OBJECTIVE: To evaluate dolutegravir pharmacokinetics during pregnancy compared to postpartum and in infant washout samples after delivery. DESIGN: Ongoing, nonrandomized, open-label, parallel-group, multicenter phase-IV prospective study of antiretroviral pharmacokinetics in HIV-infected pregnant women and infants. METHODS: Intensive steady-state 24 h pharmacokinetic profiles after dolutegravir 50 mg once-daily were performed during the second trimester (2T), third trimester (3T) and postpartum (PP)...
January 23, 2018: AIDS
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