keyword
MENU ▼
Read by QxMD icon Read
search

Dsct

keyword
https://www.readbyqxmd.com/read/28835990/cerebellar-compartments-for-the-processing-of-kinematic-and-kinetic-information-related-to-hindlimb-stepping
#1
M S Valle, G Bosco, R E Poppele
We previously showed that proprioceptive sensory input from the hindlimbs to the anterior cerebellar cortex of the cat may not be simply organized with respect to a body map, but it may also be distributed to multiple discrete functional areas extending beyond classical body map boundaries. With passive hindlimb stepping movements, cerebellar activity was shown to relate to whole limb kinematics as does the activity of dorsal spinocerebellar tract (DSCT) neurons. For DSCT activity, whole limb kinematics provides a solid functional framework within which information about limb forces, such as those generated during active stepping, may also be embedded...
August 23, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28731362/greater-cognitive-deficits-with-sleep-disordered-breathing-among-individuals-with-genetic-susceptibility-to-alzheimer-s-disease-the-multi-ethnic-study-of-atherosclerosis
#2
Dayna A Johnson, Jacqueline Lane, Rui Wang, Michelle Reid, Ina Djonlagic, Annette L Fitzpatrick, Stephen R Rapp, Luenda E Charles, Ruth O'Hara, Richa Saxena, Susan Redline
RATIONALE: There are conflicting findings regarding the link between sleep apnea and cognitive dysfunction. OBJECTIVE: Investigate associations between indicators of sleep-disordered breathing (SDB) and cognitive function in the Multi-Ethnic Study of Atherosclerosis and assess effect modification by the apolipoprotein ε-4 (APOE-ε4) allele. METHODS: A diverse population (N=1,752) underwent Type 2 in-home polysomnography, which included measurement of % sleep time <90% oxyhemoglobin saturation (%Sat<90%) and apnea-hypopnea index (AHI)...
July 21, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28689328/image-quality-of-coronary-arteries-on-non-electrocardiography-gated-high-pitch-dual-source-computed-tomography-in-children-with-congenital-heart-disease
#3
Yuichiro Kanie, Shuhei Sato, Akihiro Tada, Susumu Kanazawa
This study aimed to evaluate image quality of coronary artery imaging on non-electrocardiography (ECG)-gated high-pitch dual-source computed tomography (DSCT) in children with congenital heart disease (CHD) and to assess factors affecting image quality. We retrospectively reviewed the records of 142 children with CHD who underwent non-ECG-gated high-pitch DSCT. The subjective image quality of the proximal coronary segments was graded using a five-point scale. A score <3 represented a non-diagnostic image...
July 8, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28677055/improved-assessment-of-mediastinal-and-pulmonary-pathologies-in-combined-staging-ct-examinations-using-a-fast-speed-acquisition-dual-source-ct-protocol
#4
Franziska M Braun, Veronica Holzner, Felix G Meinel, Marco Armbruster, Martina Brandlhuber, Birgit Ertl-Wagner, Wieland H Sommer
OBJECTIVES: To demonstrate the feasibility of fast Dual-Source CT (DSCT) and to evaluate the clinical utility in chest/abdomen/pelvis staging CT studies. METHODS: 45 cancer patients with two follow-up combined chest/abdomen/pelvis staging CT examinations (maximally ±10 kV difference in tube potential) were included. The first scan had to be performed with our standard protocol (fixed pitch 0.6), the second one using a novel fast-speed DSCT protocol (fixed pitch 1...
July 4, 2017: European Radiology
https://www.readbyqxmd.com/read/28669428/preoperative-evaluation-of-anomalous-pulmonary-venous-connection-using-dual-source-computed-tomography-comparison-with-echocardiography
#5
Li Jiang, Lin-Jun Xie, Zhi-Gang Yang, Ke Shi, Hua-Yan Xu, Rui Li, Kai-Yue Diao, Ying-Kun Guo
PURPOSE: To evaluate the image features and diagnostic agreement for anomalous pulmonary venous connection (APVC) by dual-source computed tomography (DSCT) before surgery when compared with trans-thoracic echocardiography (TTE). MATERIALS AND METHODS: A total of one hundred and twenty-three patients were enrolled in this study. The associated malformation was analyzed between 39 total anomalous pulmonary venous connections (TAPVC) and 84 partial anomalous pulmonary venous connections (PAPVC)...
June 21, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28629567/ct-coronary-calcium-scoring-with-tin-filtration-using-iterative-beam-hardening-calcium-correction-reconstruction
#6
Christian Tesche, Carlo N De Cecco, U Joseph Schoepf, Taylor M Duguay, Moritz H Albrecht, Domenico De Santis, Akos Varga-Szemes, Virginia W Lesslie, Ullrich Ebersberger, Richard R Bayer, Christian Canstein, Ellen Hoffmann, Thomas Allmendinger, John W Nance
OBJECTIVES: To investigate the diagnostic accuracy of CT coronary artery calcium scoring (CACS) with tin pre-filtration (Sn100kVp) using iterative beam-hardening correction (IBHC) calcium material reconstruction compared to the standard 120kVp acquisition. BACKGROUND: Third generation dual-source CT (DSCT) CACS with Sn100kVp acquisition allows significant dose reduction. However, the Sn100kVp spectrum is harder with lower contrast compared to 120kVp, resulting in lower calcium score values...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28550355/coronary-computed-tomography-angiography-using-128-slice-dual-source-computed-tomography-in-patients-with-severe-calcification
#7
Suguru Sato, Yosuke Horii, Norihiko Yoshimura, Takuya Yagi, Hidefumi Aoyama
PURPOSE: To compare coronary computed tomography angiography (CTA) and coronary angiography (CAG) with regard to luminal graphic definition of calcified segments using 128-slice dual-source computed tomography (DSCT), specifically for patients with an Agatston score >400. MATERIALS AND METHODS: Of 1148 consecutive patients who underwent coronary CTA using a 128-slice DSCT, 132 subjects had severe calcification with an Agatston score >400. Thirty-nine of the 132 patients who had undergone CAG within 3 months before or after coronary CTA were included...
August 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28529682/segmentations-of-the-cartilaginous-skeletons-of-chondrichthyan-fishes-by-the-use-of-state-of-the-art-computed-tomography
#8
Andrew D McQuiston, Callie Crawford, U Joseph Schoepf, Akos Varga-Szemes, Christian Canstein, Matthias Renker, Carlo N De Cecco, Stefan Baumann, Gavin J P Naylor
AIM: To apply dual-source multidetector computed tomography (DSCT) scanning technology in conjunction with computationally assisted segmentation in order to explore and document skeletal variation that has occurred over the course of evolution. METHODS: We examined 4 divergent species of elasmobranchs with high-resolution 3(rd) generation DSCT. The formalin prepared species examined were: Aptychotrema vincentiana, Mitsukurina owstoni, Negaprion brevirostris and Dactylobatus armatus...
April 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28506470/coronary-ct-angiography-in-the-emergency-department-utilizing-second-and-third-generation-dual-source-ct
#9
Nandini M Meyersohn, Balint Szilveszter, Pedro V Staziaki, Jan-Erik Scholtz, Richard A P Takx, Udo Hoffmann, Brian B Ghoshhajra
BACKGROUND: Coronary computed tomography angiography (coronary CTA) allows efficient triage of low to intermediate risk patients with suspected acute coronary syndrome (ACS) in the emergency department (ED). Techniques for coronary CTA acquisition in the ED continue to evolve with the establishment of standardized scan protocols and the introduction of newer generations of CT hardware. OBJECTIVES: To evaluate qualitative and quantitative image quality and radiation dose exposure of coronary CTA acquired on 2nd versus 3rd generation dual source CT (DSCT) scanners using a standardized institutional scan protocol designed for the ED...
July 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28445908/diagnosis-of-pulmonary-artery-embolism-comparison-of-single-source-ct-and-3rd-generation-dual-source-ct-using-a-dual-energy-protocol-regarding-image-quality-and-radiation-dose
#10
COMPARATIVE STUDY
Bernhard Petritsch, Aleksander Kosmala, Tobias Gassenmaier, Andreas Max Weng, Simon Veldhoen, Andreas Steven Kunz, Thorsten Alexander Bley
Purpose To compare radiation dose, subjective and objective image quality of 3 rd generation dual-source CT (DSCT) and dual-energy CT (DECT) with conventional 64-slice single-source CT (SSCT) for pulmonary CTA. Materials and Methods 180 pulmonary CTA studies were performed in three patient cohorts of 60 patients each. Group 1: conventional SSCT 120 kV (ref.); group 2: single-energy DSCT 100 kV (ref.); group 3: DECT 90/Sn150 kV. CTDIvol, DLP, effective radiation dose were reported, and CT attenuation (HU) was measured on three central and peripheral levels...
June 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28440669/can-multiphase-dynamic-ct-angiography-provide-a-better-assessment-of-aortic-dissection-compared-with-the-standard-triphasic-protocol
#11
Chun-Yan Lu, Yi-Ke Diao, Ying-Qiang Guo, Xiao-Hui Zhang, Hong-Li Bai, Zhen-Lin Li
Background Acute aortic dissection (AD) is a life-threatening medical emergency. It has been debated whether the multiphase dynamic computed tomography angiography (CTA) protocol is superior to the standard triphasic protocol for revealing the characteristics of AD. Purpose To examine two multiphase dynamic protocols, Dynamic four-dimensional (4D) CTA using the shuttle mode and Flash 4D CTA using the high-pitch mode for the assessment of AD and to compare them with the standard triphasic protocol. Material and Methods A total of 54 consecutive patients were randomly and equally assigned to three groups and scanned with a second-generation DSCT scanner...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28431860/predictive-value-of-perfusion-defects-on-dual-energy-cta-in-the-absence-of-thromboembolic-clots
#12
Richard A P Takx, Thomas Henzler, U Joseph Schoepf, Thomas Germann, Stefan O Schoenberg, Aysel Shirinova, Ralf W Bauer, Claudia Frellesen, Long Jiang Zhang, John W Nance, Christian Fink, Paul Apfaltrer
BACKGROUND: To determine the predictive value of volumetrically measured lung perfusion defects (PDvol) and right ventricular dysfunction on dual-energy computed tomography angiography (DE-CTA) for predicting all cause mortality in patients suspected of pulmonary embolism (PE) but without evident thromboembolic clot on CTA. METHODS: 448 patients underwent DE-CTA on a 64-channel DSCT system between January 2007 and December 2012 for suspected PE, of which 115 were without detectable thromboembolic clot on CTA...
April 18, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28397443/an-evaluation-of-dual-source-computed-tomography-used-with-the-de-weert-classification-to-detect-vulnerable-plaque-using-ivus-virtual-histology-as-a-standard-of-reference
#13
Bartosz Dołęga-Kozierowski, Piotr Klimeczek, Michał Lis, Róża Krycińska, Anna Chrapusta, Urszula Zaleska-Dorobisz, Jerzy Garcarek, Wojciech Witkiewicz
BACKGROUND: One of the main risk factors for cerebral ischemic events is atherosclerotic disease of the internal carotid artery (ICA). Nowadays, increasing attention is being paid to the relationship between the morphological features of atherosclerotic plaque and the occurrence of stroke. Several studies have demonstrated that the presence of specific vulnerable plaque types, with a large lipid core and thin fibrous cap, can be used as an independent risk predictor of cerebral ischemic events...
January 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28381486/musculoskeletal-geometry-accounts-for-apparent-extrinsic-representation-of-paw-position-in-dorsal-spinocerebellar-tract
#14
Raeed H Chowdhury, Matthew C Tresch, Lee E Miller
Proprioception, the sense of limb position and motion, arises from individual muscle receptors. An important question is how and where in the neuroaxis our high level "extrinsic" sense of limb movement originates. In the 1990s, a series of papers detailed the properties of neurons in the dorsal spinocerebellar tract (DSCT) of the cat. Despite their direct projections from sensory receptors, it appeared that half of these neurons had consistent, high-level tuning to paw position rather than to joint angles (or muscle lengths)...
July 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28351368/nonrigid-registration-with-corresponding-points-constraint-for-automatic-segmentation-of-cardiac-dsct-images
#15
Xuesong Lu, Rongqian Yang, Qinlan Xie, Shanxing Ou, Yunfei Zha, Defeng Wang
BACKGROUND: Dual-source computed tomography (DSCT) is a very effective way for diagnosis and treatment of heart disease. The quantitative information of spatiotemporal DSCT images can be important for the evaluation of cardiac function. To avoid the shortcoming of manual delineation, it is imperative to develop an automatic segmentation technique for 4D cardiac images. METHODS: In this paper, we implement the heart segmentation-propagation framework based on nonrigid registration...
March 28, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28344686/comparison-of-image-quality-diagnostic-accuracy-and-radiation-dose-between-flash-model-and-retrospective-ecg-triggered-protocols-in-dual-source-computed-tomography-dsct-in-congenital-heart-diseases
#16
Rong Wang, Xiang-Jiu Xu, Gang Huang, Xing Zhou, Wen-Wen Zhang, Ya-Qiong Ma, Xiao-Na Zuo
BACKGROUND: Dual source computed tomography (DSCT) plays an important role in the diagnosis of congenital heart diseases (CHD). However, the issue of radiation-related side effects constitutes a wide public concern. The aim of the study was to explore the differences in diagnostic accuracy, radiation dose and image quality between a prospectively ECG - triggered high - pitch spiral acquisition (flash model) and a retrospective ECG-gated protocol of DSCT used for the detection of CHD. MATERIAL/METHODS: The study included 58 patients with CHD who underwent a DSCT examination, including two groups of 29 patients in each protocol...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28270284/effects-of-the-saline-flush-on-high-pitch-ct-coronary-angiography-on-third-generation-dual-source-ct-system
#17
Man Wang, Yining Wang, Yan Yi, Yun Wang, Peijun Liu, Zhengyu Jin
Objective To preliminarily investigate and optimize the saline flush effects to the image quality (IQ)and effective scan rate of high-pitch CT coronary angiography (CCTA)using ultra-low contrast media (CM)protocols on third-generation dual-source CT (DCST). Methods Sixty-eight consecutive patients with suspected or known coronary artery disease (CAD)were recruited and underwent prospective high-pitch CCTA on third-generation DSCT with automatic tube voltage selection (70-80 kV)based ultra-low CM protocols:18 ml(3...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28270283/optimization-of-kv-selection-on-third-generation-high-pitch-dual-source-coronary-ct-angiography-using-ultra-low-contrast-media-protocols-in-patients-with-body-mass-index-between-20-30-kg-m-2-under-automatic-tube-voltage-selection
#18
Ming Wang, Yan Yi, Jian Cao, Yining Wang, Bing Qi, Shuo Ma, Yun Wang
Objective To investigate the application of automatic tube voltage selection (CARE-kV)coronary CT angiography (CCTA)using ultra-low contrast media (CM)protocols in patients with body mass index (BMI)between 20 kg/m(2) and 30 kg/m(2) on third-generation dual-source CT (DSCT). Methods We prospectively included 134 consecutive patients with BMI between 20 kg/m(2) and 30 kg/m(2)who underwent CARE-kV prospective high-pitch CCTA on third-generation DSCT using the ultra-low CM protocols and divided them into two groups according to the CARE-kV results:70 kV group(n=91):65 patients with normal BMI(20 kg/m(2)≤BMI≤25 kg/m(2))and 26 patients with high BMI(25 kg/m(2)<BMI≤30 kg/m(2));and 80 kV group(n=43):12 patients with normal BMI and 31 patients with high BMI...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28270282/application-of-70-kv-third-generation-high-pitch-dual-source-coronary-ct-angiography-in-patients-with-different-body-mass-index
#19
Yan Yi, Jian Cao, Lu Lin, Lingyan Kong, Shu Jiang, Xiao Li, Peijun Liu, Ming Wang, Man Wang, Yun Wang, Zhengyu Jin, Yining Wang
Objective  To investigate the optimized range of body mass index (BMI) selection for patients undergoing 70 kV high-pitch dual-source coronary CT angiography (CCTA) on the third-generation dual-source CT (DSCT). Methods  Patients undergoing prospective high-pitch ultra-low contrast media (CM) CCTA on the third-generation DSCT using the automatic tube voltage selection at 70 kV were included and divided into three groups:group A,with BMI≤24 kg/m(2);group B,with 24 kg/m(2)<BMI<28 kg/m(2);and group C,with BMI≥28 kg/m(2)...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28270281/application-of-the-low-dose-one-stop-shop-cardiac-ct-protocol-with-third-generation-dual-source-ct
#20
Lu Lin, Yining Wang, Yan Yi, Jian Cao, Lingyan Kong, Hao Qian, Hongzhi Zhang, Wei Wu, Yun Wang, Zhengyu Jin
Objective To evaluate the feasibility of a low-dose one-stop-shop cardiac CT imaging protocol with third-generation dual-source CT (DSCT). Methods Totally 23 coronary artery disease (CAD) patients were prospectively enrolled between March to September in 2016. All patients underwent an ATP stress dynamic myocardial perfusion imaging (MPI) (data acquired prospectively ECG-triggered during end systole by table shuttle mode in 32 seconds) at 70 kV combined with prospectively ECG-triggered high-pitch coronary artery angiography (CCTA) on a third-generation DSCT system...
February 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
keyword
keyword
42052
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"