keyword
MENU ▼
Read by QxMD icon Read
search

p shot

keyword
https://www.readbyqxmd.com/read/28105599/t1-mapping-using-saturation-recovery-single-shot-acquisition-at-3-tesla-magnetic-resonance-imaging-in-hypertrophic-cardiomyopathy-comparison-to-late-gadolinium-enhancement
#1
Ryo Ogawa, Tomoyuki Kido, Masashi Nakamura, Teruhito Kido, Akira Kurata, Teruyoshi Uetani, Akiyoshi Ogimoto, Masao Miyagawa, Teruhito Mochizuki
PURPOSE: We evaluated the T1 values of segments and slices and the reproducibility in healthy controls, using saturation recovery single-shot acquisition (SASHA) at 3T magnetic resonance imaging. Moreover, we examined the difference in T1 values between hypertrophic cardiomyopathy (HCM) and healthy controls, and compared those with late gadolinium enhancement (LGE). MATERIALS AND METHODS: Twenty-one HCM patients and 10 healthy controls underwent T1 mapping before and after contrast administration...
January 19, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28090144/maximal-power-training-induced-different-improvement-in-throwing-velocity-and-muscle-strength-according-to-playing-positions-in-elite-male-handball-players
#2
M Cherif, H Chtourou, N Souissi, A Aouidet, K Chamari
This study was designed to assess the effect of strength and power training on throwing velocity and muscle strength in handball players according to their playing positions. Twenty-two male handball players were assigned to either an experimental group (n=11) or a control group (n=11) (age: 22.1 ± 3.0 years). They were asked to complete (i) the ball throwing velocity test and (ii) the one-repetition maximum (1-RM) tests for the half-back squat, the pull-over, the bench press, the developed neck, and the print exercises before and after 12 weeks of maximal power training...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28089742/multiple-habp2-variants-in-familial-papillary-thyroid-carcinoma-contribution-of-a-group-of-thyroid-checked-controls
#3
Benjamin Kern, Lucie Coppin, Pauline Romanet, Michel Crépin, Isabelle Szuster, Florence Renaud, Emmanuelle Leteurtre, Frédéric Frénois, Jean-Louis Wemeau, Bruno Carnaille, Catherine Cardot-Bauters, Christine Do Cao, Pascal Pigny
A heterozygous germline variant in the HABP2 gene c.1601G > A (p.Gly534Glu), which negatively impacts its tumor suppressive activity in vitro, has been described in 4-14% of kindreds of European-American ancestry with familial papillary thyroid carcinoma (fPTC). But it is also found in ≈4% of Europeans and European/Americans from public databases that, however, did not provide information on the thyroid function of the controls. To get unbiased results, we decided to compare HABP2 genotypes of patients with fPTC with those of "thyroid-checked" controls...
January 9, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28077303/analysis-and-correction-of-field-fluctuations-in-fmri-data-using-field-monitoring
#4
Saskia Bollmann, Lars Kasper, S Johanna Vannesjo, Andreea O Diaconescu, Benjamin E Dietrich, Simon Gross, Klaas E Stephan, Klaas P Pruessmann
This work investigates the role of magnetic field fluctuations as a confound in fMRI. In standard fMRI experiments with single-shot EPI acquisition the uniform and gradient components of the magnetic field were recorded with NMR field sensors. By principal component analysis it is found that differences of field evolution between the EPI readouts are explainable by few components relating to slow and within-shot field dynamics of hardware and physiological origin. The impact of fluctuating field components is studied by selective data correction and assessment of its influence on image fluctuation and SFNR...
January 8, 2017: NeuroImage
https://www.readbyqxmd.com/read/28076644/main-mental-disorders-in-crack-cocaine-users-treated-at-psychosocial-care-centers-for-alcohol-and-drugs-in-the-city-of-recife-brazil
#5
Antonio Gomes de Castro, Diego César Nunes da Silva, Magda da Silva Figueiroa
Introduction: Brazil's Northeast region has the highest crack-cocaine consumption in the country. Crack-cocaine has more intense effects than cocaine powder and can cause greater chemical dependence. Psychosocial Care Centers for Alcohol and Drugs (CAPSad) are public health services that provide treatment for drug dependence. It is common for drug users, and particularly crack-cocaine users, to develop mental disorders. Objective: To evaluate the most common mental disorders in crack-cocaine dependents in treatment at CAPSad in the city of Recife, Brazil...
October 2016: Trends in Psychiatry and Psychotherapy
https://www.readbyqxmd.com/read/28074381/adrenal-hormones-before-and-after-venography-during-adrenal-venous-sampling-a-self-controlled-study
#6
Yuya Koike, Seishi Matsui, Masao Omura, Kohzoh Makita, Alfonso W D Obara, Nobukazu Moriya, Tetsuo Nishikawa
OBJECTIVE: A stress reaction involving increased adrenal hormone release occurs when starting adrenal venous sampling (AVS). The purpose of the present study was to investigate the effect of single shot venography on adrenal hormone production during AVS. SUBJECTS AND METHODS: This was a prospective self-controlled study. We enrolled 54 consecutive patients (21 men, 33 women; mean age 52 ± 11 years) with primary aldosteronism who underwent AVS from May 2014 to February 2015...
January 10, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28071152/fatal-orbito-cerebral-penetration-by-industrial-grease-viscous-rare-case-report
#7
Mohit Chauhan, Chittaranjan Behera, P C Dikshit
Assorted projectiles including shrapnel, sling shots, stones, metal and rock fragments and other missiles cause fatal penetrating skull injuries. In this case, a 34-year-old foreman suffered a fatal penetrating orbito-cerebral injury while lubricating a hydraulic rock-splitting machine with industrial grease viscous.
January 1, 2017: Medico-legal Journal
https://www.readbyqxmd.com/read/28067202/pulmonary-fibrosis-tissue-characterization-using-late-enhanced-mri-compared-with-unenhanced-anatomic-high-resolution-ct
#8
Lisa P Lavelle, Darragh Brady, Sinead McEvoy, David Murphy, Brian Gibney, Annika Gallagher, Marcus Butler, Fionnula Shortt, Marie McMullen, Aurelie Fabre, David A Lynch, Michael P Keane, Jonathan D Dodd
PURPOSE: We aimed to prospectively evaluate anatomic chest computed tomography (CT) with tissue characterization late gadolinium-enhanced magnetic resonance imaging (MRI) in the evaluation of pulmonary fibrosis (PF). METHODS: Twenty patients with idiopathic pulmonary fibrosis (IPF) and twelve control patients underwent late-enhanced MRI and high-resolution CT. Tissue characterization of PF was depicted using a segmented inversion-recovery turbo low-angle shot MRI sequence...
January 9, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28066882/pharmacokinetics-of-400-mg-ropivacaine-after-periarticular-local-infiltration-analgesia-for-total-knee-arthroplasty
#9
M G E Fenten, S M K Bakker, D J Touw, B J F van den Bemt, G J Scheffer, P J C Heesterbeek, R Stienstra
BACKGROUND: Although considered safe, no pharmacokinetic data of high dose, high volume local infiltration analgesia (LIA) with ropivacaine without the use of a surgical drain or intra-articular catheter have been described. The purpose of this study is to describe the maximum total and unbound ropivacaine concentrations (Cmax , Cu max ) and corresponding maximum times (Tmax , Tu max ) of a single-shot ropivacaine (200 ml 0.2%) and 0.75 mg epinephrine (1000 μg/ml) when used for LIA in patients for total knee arthroplasty...
January 9, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28060395/design-and-validation-of-a-training-simulator-for-laser-capsulotomy-peripheral-iridotomy-and-retinopexy
#10
Sarah M Simpson, Kelly D Schweitzer, Davin E Johnson
BACKGROUND AND OBJECTIVES: Ophthalmology trainees commonly learn laser procedures on live patients. A simulator for learning peripheral iridotomy (PI), posterior capsulotomy, and retinopexy may improve patient outcomes. MATERIALS AND METHODS: A model eye with artificial tissues was designed. The tissues reacted to laser similarly to human tissues. Inexperienced (n = 6; first- to third-year residents) and experienced (n = 7; fourth- to fifth-year residents and staff) ophthalmic personal were compared on performance of the above laser procedures...
January 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28057991/extracorporeal-shockwave-lithotripsy-without-radiation-ultrasound-localization-is-as-effective-as-fluoroscopy
#11
Hazel Elizabeth Smith, David Alistair Bryant, Jenny KooNg, Richard Alexander Chapman, Gareth Lewis
CONTEXT: Extracorporeal shockwave lithotripsy (SWL) is the first-line treatment for renal calculi in most cases. Recent technology has allowed lithotriptor machines to localize stones using fluoroscopy or ultrasound (US). AIM: The aim of this study is to compare stone free rates (SFR) using two techniques. METHODS: This is a single center retrospective cohort study. We have studied 95 patients with renal calculi undergoing first SWL treatment with localization using US (48 pts) and fluoroscopy (47 pts)...
October 2016: Urology Annals
https://www.readbyqxmd.com/read/28050801/low-dose-intravenous-dexamethasone-4-mg-and-10-mg-significantly-prolongs-the-analgesic-duration-of-single-shot-interscalene-block-after-arthroscopic-shoulder-surgery-a-prospective-randomized-placebo-controlled-study
#12
Frédéric Chalifoux, François Colin, Patrick St-Pierre, Nadia Godin, Véronique Brulotte
BACKGROUND: Although intravenous dexamethasone prolongs the analgesic duration of interscalene brachial plexus block, it is uncertain whether this effect can be observed using lower doses of dexamethasone. This study evaluated the impact of intravenous dexamethasone (4 mg and 10 mg) on the analgesic duration of single-shot interscalene block after arthroscopic shoulder surgery. We hypothesized that both doses would prolong the analgesic duration compared with placebo. METHODS: This was a prospective double-blind randomized placebo-controlled study in patients undergoing elective arthroscopic shoulder surgery under regional anesthesia with a single-shot interscalene block (0...
January 3, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28048909/su-f-p-36-automation-of-linear-accelerator-star-shot-measurement-with-advanced-xml-scripting-and-electronic-portal-imaging-device
#13
N Nguyen, N Knutson, M Schmidt, M Price
PURPOSE: To verify a method used to automatically acquire jaw, MLC, collimator and couch star shots for a Varian TrueBeam linear accelerator utilizing Developer Mode and an Electronic Portal Imaging Device (EPID). METHODS: An XML script was written to automate motion of the jaws, MLC, collimator and couch in TrueBeam Developer Mode (TBDM) to acquire star shot measurements. The XML script also dictates MV imaging parameters to facilitate automatic acquisition and recording of integrated EPID images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048212/su-f-j-106-dose-adaptation-with-a-virtual-6d-couch-for-frameless-brain-radiosurgery-via-a-dedicated-gamma-ray-device
#14
J Cheung, S Braunstein, P Sneed, M McDermott, P Theodosopoulos, L Ma
PURPOSE: The couch for Gamma Knife Radiosurgery (GKSRS) is limited to translational movements. With frameless designs, patient positional rotations may become an important factor. Therefore, we investigated the effect of rotations for GKSRS and the ability to correct for these rotations with simple couch translations. METHODS: Seven previously treated GKSRS patients with different disease types (tumor volumes 0.01-12cc) were selected for this study. The planning MRI images were processed in order to digitally rotate the stereotactic frame (Leksell G-frame) to ±1, ±2, ±3, ±5, and ±10-degrees in the transverse plane from the nominal position...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048042/tu-ab-bra-07-distortion-free-3d-diffusion-mri-on-an-mri-guided-radiotherapy-system-for-longitudinal-tumor-response-assessment
#15
Y Gao, Y Yang, N Rangwala, M Cao, D Low, P Hu
PURPOSE: To develop a reliable, 3D distortion-free diffusion MRI technique for longitudinal tumor response assessment and MRI-guided adaptive radiotherapy(RT). METHODS: A diffusion prepared 3D turbo spin echo readout (DP-TSE) sequence was developed and compared with the conventional diffusion-weighted single-shot echo-planar-imaging (DW-ssEPI) sequence in a commercially available diffusion phantom, and one head-and-neck and one brain cancer patient on an MRI-guided RT system (ViewRay)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047606/su-g-bra-04-simulation-of-errors-in-maximal-intensity-projection-mip-based-lung-tumor-internal-target-volumes-itv-using-real-time-2d-mri-and-deformable-image-registration-based-lung-tumor-tracking
#16
D Thomas, A Kishan, A Santhanam, Y Min, D O'Connell, J Lamb, M Cao, N Agazaryan, Y Yang, P Lee, D Low
PURPOSE: To evaluate the effect of inter- and intra-fractional tumor motion on the error in four-dimensional computed tomography (4DCT) maximal intensity projection (MIP)-based lung tumor internal target volumes (ITV), using deformable image registration of real-time 2D-sagital cine-mode MRI acquired during lung SBRT treatments. METHODS: Five lung tumor patients underwent free breathing SBRT treatment on the ViewRay, with dose prescribed to PTV (4DCT MIP-based ITV+3-6mm margin)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047589/su-g-tep4-10-do-small-errors-matter-when-treating-pituitary-adenoma-patients-using-gamma-knife
#17
P Johnson, F Yang, N Lamichhane
PURPOSE: To determine whether positional errors on the order of 0.5-1 mm have any effect on critical structure dose or target coverage for pituitary adenoma patients treated with the Gamma Knife Perfexion. METHODS: Treatment plans for six pituitary adenoma patients were modified to include positional shifts of 0.5 mm and 1 mm for each shot and in each cardinal direction. Twelve new plans were created per patient, and changes in target coverage and maximum dose to surrounding critical structures were recorded...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047156/su-f-t-593-technical-treatment-accuracy-in-a-clinic-of-fractionated-stereotactic-radiosurgery
#18
R Bisht, S Kale, G Natanasabapathi, M Singh, D Agarwal, G Rath, P Julka, P Kumar, S Thulkar, A Garg, B Sharma
PURPOSE: The purpose of this study is to estimate technical treatment accuracy in fractionated stereotactic radiosurgery (fSRS) using extend system (ES) of Gamma Knife (GK). METHODS: The fSRS with GK relies on a patient specific re-locatable immobilization system. The reference treatment position is estimated using a digital probe and a repositioning check tool (RCT). The "calibration values" of RCT apertures were compared with measured values on RCT-QA tool to evaluate the standard error (SE) associated with RCT measurements...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28027770/contrast-enhanced-renal-mr-angiography-at-7-tesla-how-much-gadolinium-do-we-need
#19
Karsten Beiderwellen, Oliver Kraff, Anja Laader, Stefan Maderwald, Stephan Orzada, Mark E Ladd, Michael Forsting, Thomas C Lauenstein, Lale Umutlu
OBJECTIVES: To investigate whether a dose reduction of Gadobutrol for renal magnetic resonance angiography (MRA) at 7 Tesla (T) is feasible while preserving diagnostic image quality. METHODS: Ten healthy volunteers were enrolled for a renal MRA on a 7T scanner. Fast low angle shot (FLASH) MRA data sets were obtained utilizing three different doses of Gadobutrol (0.1, 0.05 and 0.025mmol/kg body weight [BW]). Contrast ratios (CR) were measured in the aorta as well as in the intra- and extraparenchymal arteries compared to the psoas muscle...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28012357/comparison-of-2d-single-shot-turbo-spin-echo-and-spin-echo-echo-planar-diffusion-weighted-brain-mri-at-3-0-tesla-preliminary-experience-in-children
#20
Amber L Pokorney, Jeffrey H Miller, Houchun H Hu
PURPOSE: To qualitatively compare a 2D single-shot turbo-spin-echo (ssTSE) diffusion-weighted imaging MRI technique with a spin-echo echo-planar imaging (SE-EPI) approach in pediatric neuroimaging. METHODS: Images were acquired at 3T in 15 patients (10.6±6.0years). A neuroradiologist rated the data based on the severity of image artifacts from air-tissue interfaces and devices such as ventriculoperitoneal shunts and orthodontia, and whether their presence affected diagnostic image quality...
December 15, 2016: Clinical Imaging
keyword
keyword
120144
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"