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Marios Hadjipavlou, Edmund Grouse, Robert Gray, Denosshan Sri, Dean Huang, Christian Brown, Davendra Sharma
OBJECTIVES: To present our series of patients with penetrating renal trauma from two urban major trauma centres and discuss contemporary management of these injuries. METHODS: We reviewed prospective urological trauma databases for all patients presenting with penetrating renal trauma between January 2005 and October 2016. Patient demographics, clinical characteristics, imaging, management and follow-up data were analysed. RESULTS: Over the 11 year period, 63 patients presented with penetrating renal injuries...
February 13, 2018: BJU International
Chathura Kumaragamage, Dan Madularu, Axel P Mathieu, Derek Lupinsky, Robin A de Graaf, Jamie Near
PURPOSE: Indirect 13 C MRS by proton-observed carbon editing (POCE) is a powerful method to study brain metabolism. The sensitivity of POCE-MRS can be enhanced through the use of short TEs, which primarily minimizes homonuclear J-evolution related losses; previous POCE-MRS implementations use longer than optimal echo times due to sequence limitations, or short TE image selected in vivo spectroscopy-based multi-shot acquisitions for 3D localization. To that end, this paper presents a novel single-shot point resolved spectroscopy (PRESS)-localized POCE-MRS sequence that involves the application of simultaneous editing and localization pulses (SEAL)-PRESS, allowing the TE to be reduced to a theoretically optimal value of ∼ 1/JHC ...
February 9, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Katharina Boehm, Fabian P Siegel, Laila Schneidewind, Jennifer Kranz, Philipp Spachmann, Tanja Frank, Nina Huck, Florian Imkamp, Alexandre Pelzer
Purpose: Prostate biopsy (pbx) is the most common outpatient procedure in urology. Complications are urinary tract infections, including hospitalization and sepsis. Recommendations on antibiotic prophylaxis (apx) are scarce, and healthcare data are not available. The study addressed the following endpoints: the duration and spectrum of antimicrobial prophylaxis in transrectal and transperineal pbx in the hospital and the practice setting. Methods: A questionnaire compiled data about age, gender, board certification, and place of work...
2018: Frontiers in Surgery
Ahmed Abdel Khalek Abdel Razek
PURPOSE: To characterize salivary glands tumors with diffusion tensor imaging. METHODS: This study was conducted upon 53 patients (aged 18-81 years: mean 37 years) with salivary gland tumors that underwent diffusion tensor imaging was obtained using a single-shot echo-planar imaging sequence with parallel imaging at 1.5 tesla scanner. Forty-eight slices were obtained, with a thickness of 2.5 mm, with no gap and the total scan duration was 7-8 min. The fractional anisotropy (FA) and the mean diffusivity (MD) value of the salivary gland tumors was calculated and correlated with pathological findings...
February 7, 2018: Dento Maxillo Facial Radiology
Osamu Togao, Akio Hiwatashi, Koji Yamashita, Kazufumi Kikuchi, Daichi Momosaka, Koji Yoshimoto, Daisuke Kuga, Masahiro Mizoguchi, Satoshi O Suzuki, Toru Iwaki, Marc Van Cauteren, Koji Iihara, Hiroshi Honda
OBJECTIVE: To evaluate the quantification performance of the perfusion fraction (f) measured with intravoxel incoherent motion (IVIM) MR imaging in a comparison with the histologic vascular density in meningiomas. METHODS: Twenty-nine consecutive patients with meningioma (59.0 ± 16.8 years old, 8 males and 21 females) who underwent a subsequent surgical resection were examined with both IVIM imaging and a histopathologic analysis. IVIM imaging was conducted using a single-shot SE-EPI sequence with 13 b-factors (0, 10, 20, 30, 50, 80, 100, 200, 300, 400, 600, 800, 1000 s mm-2) at 3T...
February 7, 2018: British Journal of Radiology
Emel Kaya Aumann, Sadik Server, Bedriye Koyuncu Sokmen, Aysegul Oz, Esat Namal, Nagihan Inan Gurcan, Numan Cem Balci, Yaman Tokat
PURPOSE: To evaluate the diagnostic accuracy of intravoxel incoherent motion (IVIM) and diffusion-weighted imaging (DWI) parameters in the differential diagnosis of portal vein thrombus (PVT). METHODOLOGY: Thirty-five patients with PVT were enrolled in this retrospective study. Precontrast axial in-phase and out-of-phase T1-weighted (W) turbo field echo (TFE), axial and coronal T2-W single-shot turbo spin echo, IVIM with b values between 0 and 1300 s/mm2 and conventional DWI with b factors of 50, 400, and 800 s/mm2 with single-shot echo-planar imaging, and postcontrast dynamic T1-W volumetric interpolated breath-hold examination images obtained with 1...
February 7, 2018: Abdominal Radiology
Kevin M Hellman, Caroline S Kuhn, Frank F Tu, Katlyn E Dillane, Nathan A Shlobin, Sangeeta Senapati, Xiaojie Zhou, Wei Li, Pottumarthi V Prasad
BACKGROUND: The lack of non-invasive methods to study dysmenorrhea has resulted in poor understanding of the mechanisms underlying pain, insufficient diagnostic tests, and limited treatment options. To address this knowledge gap, we have developed an MRI-based strategy for continuously monitoring the uterus in relation to participants' spontaneous pain perception. OBJECTIVE: The study objective was to evaluate whether MRI can detect real-time changes in myometrial activity during cramping episodes in women with dysmenorrhea, with a hand-held squeeze bulb for pain reporting...
January 31, 2018: American Journal of Obstetrics and Gynecology
Takayuki Sakai, Kunio Doi, Masami Yoneyama, Atsuya Watanabe, Tosiaki Miyati, Noriyuki Yanagawa
PURPOSE: Diffusion tensor imaging (DTI) based on a single-shot echo planer imaging (EPI-DTI) is an established method that has been used for evaluation of lumbar nerve disorders in previous studies, but EPI-DTI has problems such as a long acquisition time, due to a lot of axial slices, and geometric distortion. To solve these problems, we attempted to apply DTI based on a single-shot turbo spin echo (TSE-DTI) with direct coronal acquisition. Our purpose in this study was to investigate whether TSE-DTI may be more useful for evaluation of lumbar nerve disorders than EPI-DTI...
January 30, 2018: Magnetic Resonance Imaging
M P Frolov, Yu V Korostelin, V I Kozlovsky, Yu P Podmar'kov, Ya K Skasyrsky
The characteristics of an Fe:ZnSe laser thermoelectrically cooled to 220 K are described. Output energy of 7.5 J and optical-to-optical efficiency of 30% have been demonstrated in single-shot operation at 4.3 μm with a 2.94 μm Er:YAG pump laser. By using an intracavity prism, continuous tuning from 3.75 to 4.82 μm has been obtained at output energy up to 3.1 J.
February 1, 2018: Optics Letters
Aman Satija, Morgan D Ruesch, Michael S Powell, Steven F Son, Robert P Lucht
We have employed, to the best of our knowledge, a novel excitation scheme to perform the first high-repetition-rate planar laser-induced fluorescence (PLIF) measurements of a CN radical in combustion. The third harmonic of a Nd:YVO4 laser at 355 nm due to its relatively large linewidth overlaps with several R branch transitions in a CN ground electronic state. Therefore, the 355 nm beam was employed to directly excite the CN transitions with good efficiency. The CN measurements were performed in premixed CH4-N2O flames with varying equivalence ratios...
February 1, 2018: Optics Letters
N E Mohamed, S E Ashour
PURPOSE: The present study aimed to evaluate the protective role of "Morus alba Linn. (Family: Moraceae) commonly known as mulberry" leaves extract against hazardous effects of gamma rays in male rats. MATERIALS AND METHODS: Thirty six male albino rats were divided into six groups (6 rats/group); 1 - control group received 1 ml distilled water, 2- low dose of extract (100 mg/Kg) group treated daily with low oral dose of ethanolic extract of mulberry leaves (100 mg/kg body weight (b...
February 2, 2018: International Journal of Radiation Biology
Ryan Powers, Stephen Hurley, Edward Park, Brian McArdle, Patricia Vidal, Sarah P Psutka, Courtney M P Hollowell
PURPOSE: Scrotal Gunshot Wound (SGSW) may result in testicular injury, necessitating urgent scrotal exploration and attempted testicular salvage. Scrotal Ultrasound (SUS) is highly sensitive and specific for testicular rupture in the setting of blunt scrotal trauma but is poorly studied in the setting of SGSW. This study's objective was to determine the accuracy of SUS in the identification of testicular rupture following SGSW. METHODS: We retrospectively reviewed patients with SGSW from 2003-2014 with preoperative US prior to scrotal exploration...
January 29, 2018: Journal of Urology
F H Lindner, J H Bin, F Englbrecht, D Haffa, P R Bolton, Y Gao, J Hartmann, P Hilz, C Kreuzer, T M Ostermayr, T F Rösch, M Speicher, K Parodi, P G Thirolf, J Schreiber
Laser-based ion acceleration is driven by electrical fields emerging when target electrons absorb laser energy and consecutively leave the target material. A direct correlation between these electrons and the accelerated ions is thus to be expected and predicted by theoretical models. We report on a modified wide-angle spectrometer, allowing the simultaneous characterization of angularly resolved energy distributions of both ions and electrons. Equipped with online pixel detectors, the RadEye1 detectors, the investigation of this correlation gets attainable on a single shot basis...
January 2018: Review of Scientific Instruments
Min Liu, Weifang Liu, Haoyuan Li, Xiaoming Shu, Xincao Tao, Zhenguo Zhai
The primary aim of our case-control study was to observe delayed contrast-enhanced magnetic resonance imaging (DCE-MRI) in patients with Takayasu arteritis (TA) in comparison with magnetic resonance angiography (MRA). Twenty-seven patients including 15 with active TA and 12 with stable TA who underwent both aortic MRA and DCE-MRI were included. A total of 27 sex- and age-matched healthy volunteers were enrolled as the control group. MRA were obtained with T1WI-volume-interpolated breath-hold examination sequence or fast low-angle shot (FLASH) sequence...
December 2017: Medicine (Baltimore)
Hongyi Li, Lin Liu, Qinglei Shi, Alto Stemmer, Hong Zeng, Yi Li, Mengchao Zhang
To compare the detection of bladder neoplasms and image quality among the diffusion-weighted imaging (DWI) acquired by the prototype single-shot echo-planar-imaging (ss-EPI) sequence for integrated slice-specific dynamic shimming (iShim), readout segmentation of long variable echo trains (RESOLVE) and conventional ss-EPI sequences.Around 63 patients with 77 bladder lesions were enrolled. The MR protocol included T1WI, T2WI and 3 types of DWI. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of each DWI for the detection of bladder tumor were computed...
December 2017: Medicine (Baltimore)
Dengfa Yang, Jianmin Shen, Xianwu Xia, Yeqing Lin, Tiejun Yang, Hanshun Lin, Yong Jin, Kaiyu Zhou, Youcheng Li
OBJECTIVE: The purpose of the study was to evaluate the value of high-resolution three-dimensional fast low angle shot (3D-FLASH) and three-dimensional constructive interference in steady-state (3D-CISS) MRI sequence solely or the combination of both in the visualization of neurovascular relationship in patients with trigeminal neuralgia (TN). METHODS: 65 patients with unilateral TN underwent 3D-FLASH and 3D-CISS imaging were retrospectively studied. Neurovascular relationship at the intracisternal segment of trigeminal nerve was reviewed by two experienced neuroradiologist, who was blinded to the clinical details...
February 13, 2018: British Journal of Radiology
Barbara Cervantes, Anh T Van, Dominik Weidlich, Hendrick Kooijman, Andreas Hock, Ernst J Rummeny, Alexandra Gersing, Jan S Kirschke, Dimitrios C Karampinos
PURPOSE: To perform in vivo isotropic-resolution diffusion tensor imaging (DTI) of lumbosacral and sciatic nerves with a phase-navigated diffusion-prepared (DP) 3D turbo spin echo (TSE) acquisition and modified reconstruction incorporating intershot phase-error correction and to investigate the improvement on image quality and diffusion quantification with the proposed phase correction. METHODS: Phase-navigated DP 3D TSE included magnitude stabilizers to minimize motion and eddy-current effects on the signal magnitude...
January 29, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Wan Mohd Nazaruddin Wan Hassan, Anafairos Md Nayan, Azmi Abu Hassan, Rhendra Hardy Mohamad Zaini
Background: Abdominal hysterectomy (AH) is painful. The aim of this study was to compare intrathecal morphine (ITM) and epidural bupivacaine (EB) for their analgaesia effectiveness after this surgery. Methods: Thirty-two patients undergoing elective AH were randomised into Group ITM (ITM 0.2 mg + 2.5 mL 0.5% bupivacaine) (n = 16) and Group EB (0.25% bupivacaine bolus + continuous infusion of 0.1% bupivacaine-fentanyl 2 μg/mL) (n = 16).The procedure was performed before induction, and all patients subsequently received standard general anaesthesia...
December 2017: Malaysian Journal of Medical Sciences: MJMS
A Pontin, J E Lang, A Chowdhury, P Vezio, F Marino, B Morana, E Serra, F Marin, T S Monteiro
The extraordinary sensitivity of the output field of an optical cavity to small quantum-scale displacements has led to breakthroughs such as the first detection of gravitational waves and of the motions of quantum ground-state cooled mechanical oscillators. While heterodyne detection of the output optical field of an optomechanical system exhibits asymmetries which provide a key signature that the mechanical oscillator has attained the quantum regime, important quantum correlations are lost. In turn, homodyning can detect quantum squeezing in an optical quadrature but loses the important sideband asymmetries...
January 12, 2018: Physical Review Letters
Didier Duivon, Isabelle Corrégé, Anne Hémonic, Martial Rigaut, David Roudaut, Rika Jolie
Background: A controlled randomized trial was performed on a well-managed conventional French 180-sow farm. The trial compared the growth performances of piglets vaccinated at weaning (single shot) either with a commercial monovalent Mycoplasma hyopneumoniae bacterin vaccine or with a commercial bivalent vaccine (Porcilis® PCV M Hyo) against M. hyopneumoniae and porcine circovirus 2 (PCV2). The farm's porcine reproductive and respiratory syndrome status was stable, and most diseases (enzootic pneumonia, atrophic rhinitis, post-weaning multisystemic wasting syndrome) were controlled by routine vaccination...
2018: Porcine Health Management
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