keyword
MENU ▼
Read by QxMD icon Read
search

dir

keyword
https://www.readbyqxmd.com/read/28426189/issues-confronting-rural-pharmacies-after-a-decade-of-medicare-part-d
#1
Fred Ullrich, Abiodun Salako, Keith Mueller
Purpose. The RUPRI Center for Rural Health Policy Analysis has been monitoring the status of rural independent pharmacies since the implementation of Medicare Part D in 2005. After a decade of Part D, we reassess in this brief the issues that concern rural pharmacies and may ultimately challenge their provision of services. This reassessment is based on survey responses from rural pharmacists. Key Findings: (1) Rural pharmacists indicated that two challenges--direct and indirect remuneration (DIR) fees, and delayed maximum allowable cost (MAC) adjustment--ranked highest on scales of both magnitude and immediacy...
April 2017: Rural Policy Brief
https://www.readbyqxmd.com/read/28421669/misfortune-may-be-a-blessing-in-disguise-fairness-perception-and-emotion-modulate-decision-making
#2
Hong-Hsiang Liu, Yin-Dir Hwang, Ming H Hsieh, Yung-Fong Hsu, Wen-Sung Lai
Fairness perception and equality during social interactions frequently elicit affective arousal and affect decision making. By integrating the dictator game and a probabilistic gambling task, this study aimed to investigate the effects of a negative experience induced by perceived unfairness on decision making using behavioral, model fitting, and electrophysiological approaches. Participants were randomly assigned to the neutral, harsh, or kind groups, which consisted of various asset allocation scenarios to induce different levels of perceived unfairness...
April 19, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28419602/physics-for-clinicians-fluid-attenuated-inversion-recovery-flair-and-double-inversion-recovery-dir-imaging
#3
REVIEW
Manojkumar Saranathan, Pauline W Worters, Dan W Rettmann, Blair Winegar, Jennifer Becker
A pedagogical review of fluid-attenuated inversion recovery (FLAIR) and double inversion recovery (DIR) imaging is conducted in this article. The basics of the two pulse sequences are first described, including the details of the inversion preparation and imaging sequences with accompanying mathematical formulae for choosing the inversion time in a variety of scenarios for use on clinical MRI scanners. Magnetization preparation (or T2prep), a strategy for improving image signal-to-noise ratio and contrast and reducing T1 weighting at high field strengths, is also described...
April 17, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28414799/comprehensive-evaluation-of-ten-deformable-image-registration-algorithms-for-contour-propagation-between-ct-and-cone-beam-ct-images-in-adaptive-head-neck-radiotherapy
#4
Xin Li, Yuyu Zhang, Yinghua Shi, Shuyu Wu, Yang Xiao, Xuejun Gu, Xin Zhen, Linghong Zhou
Deformable image registration (DIR) is a critical technic in adaptive radiotherapy (ART) for propagating contours between planning computerized tomography (CT) images and treatment CT/cone-beam CT (CBCT) images to account for organ deformation for treatment re-planning. To validate the ability and accuracy of DIR algorithms in organ at risk (OAR) contour mapping, ten intensity-based DIR strategies, which were classified into four categories-optical flow-based, demons-based, level-set-based and spline-based-were tested on planning CT and fractional CBCT images acquired from twenty-one head & neck (H&N) cancer patients who underwent 6~7-week intensity-modulated radiation therapy (IMRT)...
2017: PloS One
https://www.readbyqxmd.com/read/28398630/mitigating-differential-baseline-shifts-in-locally-advanced-lung-cancer-patients-using-an-average-anatomy-model
#5
Mehrsima Abdoli, Simon R van Kranen, Uros Stankovic, Maddalena M G Rossi, Jose S A Belderbos, Jan-Jakob Sonke
BACKGROUND AND PURPOSE: Differential baseline shifts between primary tumor and involved lymph nodes in locally advanced lung cancer patients compromise the accuracy of radiotherapy. The purpose of this study was to evaluate the performance of an average anatomy model (AAM) derived from repeat imaging and deformable registration to reduce these geometrical uncertainties. METHODS AND MATERIALS: An in-house implementation of a B-Spline deformable image registration (DIR) algorithm was first validated using three different validation approaches: 1) a circle method to test the consistency of the DIR, 2) fiducial marker target registration error, and 3) the recovery of a known deformation vector field (DVF)...
April 11, 2017: Medical Physics
https://www.readbyqxmd.com/read/28395561/acoustic-and-perceptual-effects-of-magnifying-interaural-difference-cues-in-a-simulated-binaural-hearing-aid
#6
Tobias de Taillez, Giso Grimm, Birger Kollmeier, Tobias Neher
OBJECTIVE: To investigate the influence of an algorithm designed to enhance or magnify interaural difference cues on speech signals in noisy, spatially complex conditions using both technical and perceptual measurements. To also investigate the combination of interaural magnification (IM), monaural microphone directionality (DIR), and binaural coherence-based noise reduction (BC). DESIGN: Speech-in-noise stimuli were generated using virtual acoustics. A computational model of binaural hearing was used to analyse the spatial effects of IM...
April 10, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28393298/double-inversion-recovery-imaging-of-the-brain-deriving-the-most-relevant-sequence-through-real-images
#7
Shunichi Motegi, Takehiro Shimada, Norio Hayashi, Hiroyuki Nagase, Ayako Taketomi-Takahashi, Yoshito Tsushima
We propose a practical method for setting the optimal inversion times (TI) for double inversion recovery (DIR) sequences. Our method used the measurement of signal intensity (SI) from real images to set the optimal TI for white-matter (WM) and gray-matter (GM)-attenuated inversion recovery (WAIR and GAIR, respectively) images. 3D-DIR images of healthy volunteers were obtained on 1.5- and 3.0-T magnetic resonance (MR) scanners and the SIs of GM, WM, and cerebrospinal fluid (CSF) were evaluated on real images...
April 9, 2017: Radiological Physics and Technology
https://www.readbyqxmd.com/read/28391845/selection-and-characterization-of-dimethylindole-red-dna-aptamers-for-the-development-of-light-up-fluorescent-probes
#8
Hongyan Wang, Jine Wang, Qinglin Wang, Xing Chen, Min Liu, Hongxia Chen, Renjun Pei
To develop novel label-free light-up probes with improved performance characteristics and low background, we selected DNA aptamers for dimethylindole red (DIR) by a modified affinity chromatography based SELEX method. DIR is an anionic propylsulfonate substituted red-emitting dye derivative of thiazole orange and exhibited weak fluorescence in fluid solution and in the presence of dsDNA. After 14 rounds of selection, a shortened 42-mer DNA aptamer with sub-micromolar dissociation constant (Kd=0.65±0.17μM) was selected...
June 1, 2017: Talanta
https://www.readbyqxmd.com/read/28391192/estimation-of-large-motion-in-lung-ct-by-integrating-regularized-keypoint-correspondences-into-dense-deformable-registration
#9
Jan Ruhaak, Thomas Polzin, Stefan Heldmann, Ivor Simpson, Heinz Handels, Jan Modersitzki, Mattias Paul Heinrich
We present a novel algorithm for the registration of pulmonary CT scans. Our method is designed for large respiratory motion by integrating sparse keypoint correspondences into a dense continuous optimization framework. The detection of keypoint correspondences enables robustness against large deformations by jointly optimizing over a large number of potential discrete displacements, whereas the dense continuous registration achieves sub-voxel alignment with smooth transformations. Both steps are driven by the same normalized gradient fields data term...
April 5, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28389446/dir-fees-pose-a-5-star-problem-for-pharmacies
#10
Kate Traynor
No abstract text is available yet for this article.
April 15, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28379049/a-case-of-epilepsy-in-multiple-sclerosis-three-dimensional-double-inversion-recovery-sequences-revealed-cortical-dysplasia
#11
Domenico S Zimatore, Mirko Trentadue, Marco Castellaro, Monica Ferlisi, Enrico Piovan, Massimiliano Calabrese
In epileptic patients with multiple sclerosis (MS), cortical lesions have been suggested to cause seizures. In brain magnetic resonance imaging (MRI), double inversion recovery (DIR) sequences are generally used to evaluate MS cortical disease burden. We present the case of a woman, diagnosed with MS, suffering from drug-resistant partial seizures initially attributed to MS. The patient underwent many MRI exams, but only by means of high-resolution three-dimensional DIR sequences was a focal cortical dysplasia discovered...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28373627/effects-of-transplanted-human-cord-blood-mononuclear-cells-on-pulmonary-hypertension-in-immunodeficient-mice-and-their-distribution
#12
Mikio Sugano, Homare Yoshida, Hirotsugu Kurobe, Hiroki Arase, Hajime Kinoshita, Takashi Kitaichi, Noriko Sugasawa, Soichiro Nakayama, Kazuhisa Maeda, Minoru Irahara, Tetsuya Kitagawa
OBJECTIVES: To investigate the effects of human umbilical cord blood-derived mononuclear cell (hUCB-MNC) transplantation on pulmonary hypertension (PH) induced by monocrotaline (MCT) in immunodeficient mice and their distribution. METHODS: MCT was administered to BALB/c Slc-nu/nu mice, and PH was induced in mice 4 weeks later. Fresh hUCB-MNCs harvested from a human donor after her delivery were injected intravenously into those PH mice. The medial thickness of pulmonary arterioles, ratio of right ventricular to septum plus left ventricular weight (RV/S+LV), and ratio of acceleration time to ejection time of pulmonary blood flow waveform (AT/ET) were determined 4 weeks after hUCB-MNC transplantation...
2017: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/28372889/structure-based-deformable-image-registration-added-value-for-dose-accumulation-of-external-beam-radiotherapy-and-brachytherapy-in-cervical-cancer
#13
Laura E van Heerden, Antonetta C Houweling, Kees Koedooder, Zdenko van Kesteren, Niek van Wieringen, Coenraad R N Rasch, Bradley R Pieters, Arjan Bel
BACKGROUND AND PURPOSE: Structure-based deformable image registration (DIR) can be used to calculate accumulated brachytherapy (BT) and external-beam radiation therapy (EBRT) dose-volume histogram (DVH) parameters in cervical cancer. Since direct parameter addition does not take dose non-uniformity into account, the added value of DIR over addition methods was investigated for bladder and rectum. MATERIALS AND METHODS: For twelve patients (EBRT: 46Gy, EBRT+BT: D90 85-90GyEQD2 in equivalent dose in 2Gy fractions) the EBRT planning CT and BT planning MRI were registered using DIR...
March 31, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28355889/polyarginine-and-peg-aeylr-comodified-nanostructured-lipid-carrier-10mol-uncleavable-peg-aeylr-showed-no-shielding-effect-to-polyarginine-in-vitro-while-maintaining-good-tumor-targeting-in-vivo
#14
Mingshuang Sun, Zhihong Zhu, Huixin Wang, Shanshan Jin, Xinggang Yang, Cuiyan Han, Weisan Pan
We constructed a dual ligands-modified nanostructured lipid carrier (NLC) called PAR-NLC, in which the epidermal growth factor receptor (EGFR)-targeted small peptide AEYLR was attached to the distal end of PEG2000 anchored on the NLC surface naming PEG-AEYLR, and poly-arginine (R8) as a classic cell-penetrating peptide was attached directly to the NLC surface. PAR-NLC was near-spherical particle with average size ∼50 nm and zeta potential at +14.09 mV; the cellular uptake of PAR-NLC showed synergistic effect of the two peptides, presented as significant superior cellular uptake in EGFR-positive cells NCI-H1299 and S180 over EGFR-negative cell K562...
March 30, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28351826/erratum
#15
(no author information available yet)
In the review article by Gui et al., entitled "Multidetector CT appearance of the pelvis after cesarean delivery: normal and abnormal acute findings" (Diagn Interv Radiol 2016; 22:534-541. DOI 10.5152/dir.2016.15593) that was published in the November 2016 issue of Diagnostic and Interventional Radiology, an incorrect list of references was published due to a technical error. This has been corrected in the online versions of this article.
March 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28319406/effect-of-apelin-13-on-erythrocyte-deformability-during-ischaemia-reperfusion-injury-of-heart-in-diabetic-rats
#16
H Kartal, F M Comu, A Kucuk, Y Polat, A D Dursun, M Arslan
OBJECTIVES: Erythrocyte deformability and plasma viscosity are of crucial importance for the perfusion of tissues and organs. The aim of this study was to evaluate the effect of apelin-13 on erythrocyte deformability during IR heart injury in diabetic rats. METHODS: Eighteen Wistar Albino rats were included in the study after streptozotocin (55 mg/kg) treatment for four weeks of observation for diabetes existence. The animals were randomly assigned to one of five experimental groups...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28317122/an-anthropomorphic-abdominal-phantom-for-deformable-image-registration-accuracy-validation-in-adaptive-radiation-therapy
#17
Yuliang Liao, Linjing Wang, Xiangdong Xu, Haibin Chen, Jiawei Chen, Guoqian Zhang, Huaiyu Lei, Ruihao Wang, Shuxu Zhang, Xuejun Gu, Xin Zhen, Linghong Zhou
PURPOSE: To design and construct a three-dimensional (3D) anthropomorphic abdominal phantom for geometric accuracy and dose summation accuracy evaluations of deformable image registration (DIR) algorithms for adaptive radiation therapy (ART). METHOD: Organ molds, including liver, kidney, spleen, stomach, vertebra and two metastasis tumors, were 3D printed using contours from an ovarian cancer patient. The organ molds were molded with deformable gels made of different mixtures of polyvinyl chloride (PVC) and the softener dioctyl terephthalate...
March 20, 2017: Medical Physics
https://www.readbyqxmd.com/read/28299488/measuring-the-benefits-of-a-regional-imaging-environment
#18
Jason Nagels, David Macdonald, Christine Coz
The use of central diagnostic imaging repositories (DIRs), that allow separate organizations with disparate PACS systems to seamlessly share patient data, is becoming more common; and as a result, the documentation of measurable benefits is a key deliverable to all stakeholders. Central DIRs and the implementation of foreign exam management (FEM) provide clinical users with the ability to seamlessly access DI exams and reports that originate from an outside location. FEM has been implemented to varying degrees across regional DIRs within Canada [1]...
March 15, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28297355/mr-image-based-synthetic-ct-for-imrt-prostate-treatment-planning-and-cbct-image-guided-localization
#19
Shupeng Chen, Hong Quan, An Qin, Seonghwan Yee, Di Yan
The purpose of this study was to propose and evaluate a method of creating a synthetic CT (S-CT) from MRI simulation for dose calculation and daily CBCT localization. A pair of MR and CT images was obtained in the same day from each of 10 prostate patients. The pair of MR and CT images was preregistered using the deformable image registration (DIR). Using the corresponding displacement vector field (atlas-DVF), the CT image was deformed to the MR image to create an atlas MR-CT pair. Regions of interest (ROI) on the atlas MR-CT pair were delineated and used to create atlas-ROI masks...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297339/deformable-image-registration-and-interobserver-variation-in-contour-propagation-for-radiation-therapy-planning
#20
Adam C Riegel, Jeffrey G Antone, Honglai Zhang, Prachi Jain, Jagdeep Raince, Anthony Rea, Angelo M Bergamo, Ajay Kapur, Louis Potters
Deformable image registration (DIR) and interobserver variation inevitably introduce uncertainty into the treatment planning process. The purpose of the current work was to measure deformable image registration (DIR) errors and interobserver variability for regions of interest (ROIs) in the head and neck and pelvic regions. Measured uncertainties were combined to examine planning margin adequacy for contours propagated for adaptive therapy and to assess the trade-off of DIR and interobserver uncertainty in atlas-based automatic segmentation...
May 2016: Journal of Applied Clinical Medical Physics
keyword
keyword
80121
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"