keyword
MENU ▼
Read by QxMD icon Read
search

CTP

keyword
https://www.readbyqxmd.com/read/28636734/is-computed-tomography-perfusion-a-useful-method-for-distinguishing-between-benign-and-malignant-neck-masses
#1
Fatih Düzgün, Serdar Tarhan, Gülgün Yılmaz Ovalı, Görkem Eskiizmir, Yüksel Pabuşçu
Evaluation of neck masses is frequent in ear, nose, and throat clinics. Successful outcomes associated with neck mass are directly related to rapid diagnosis and accurate treatment for each patient. Late diagnosis of a malignant mass increases the magnitude of morbidity and the rate of mortality of the disease. Although magnetic resonance imaging and computed tomography (CT) examinations are important tools for evaluating head and neck pathologies, they do not allow functional evaluation. For this reason, CT perfusion (CTP) as a method of functional evaluation for distinguishing benign from malignant masses is gaining attention...
June 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28631134/budd-chiari-syndrome-outcomes-of-endovascular-intervention-a-single-center-experience
#2
Nitin Jagtap, Mithun Sharma, Jagdeesh Singh, Manu Tandan, P N Rao, Rajesh Gupta, Sundeep Lakhtakia, Mohan Ramchandani, Harshal Shah, T Mahesh Kumar, Santosh Darishetty, G V Rao, D N Reddy
AIM: Outcomes of endovascular intervention in Budd-Chiari syndrome (BCS) have been reported with varied results. Clinical outcomes of endovascular interventions in BCS and role of various prognostic scores were critically evaluated in this study. METHODS: This study retrospectively analyzed consecutive patients of BCS who underwent endovascular intervention between January 2007 and May 2016 at our center. Technical, clinical successes and complications were documented...
June 20, 2017: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/28629676/percutaneous-nephrolithotomy-puncture-and-tract-dilation-evidence-on-the-safety-of-approaches-to-the-infundibulum-of-the-middle-renal-calyx
#3
Panagiotis Kallidonis, Christina Kalogeropoulou, Iason Kyriazis, Dimitrios Apostolopoulos, Panagiotis Kitrou, Dimitrios Kotsiris, Panteleimon Ntasiotis, Evangelos Liatsikos
OBJECTIVES: To investigate the anatomical relations of the papillary, infundibular and pelvic approach to percutaneous nephrolithotomy (PCNL) and evaluate the amount of vascularization at the respective sites. MATERIALS: (99m)Tc-dimercaptosuccinic acid SPECT/CT renal scintigraphies or Computerized tomographies perfusion (CTP) were performed in 40 patients (prone n=20 or supine position n=20). The angle of approach (AoA) for access tracts the respective regions of interest (ROIs) to the mid-calyceal papilla and infundibulum as well as renal pelvis were designed and compared...
June 16, 2017: Urology
https://www.readbyqxmd.com/read/28614928/-analysis-of-inner-or-extra-exposure-for-worker-in-carbon-and-coal-tar-process-industries
#4
X C Wang, F Zhang, N Jia, W Zhang, X Y Zhang, J Li, H Shao
Objective: To evaluate the inner or extra-exposure of workers in carbon and coal tar process industries. Methods: In May 2015, 271 exposure and 75 non-exposure workers in two of carbon and coal tar process industries in Shandong province were selected. Coal tar pitch (CTP) was detected according to the methods of GB17054-1997. The 1-OH-Nap、2-OH-Nap、1-OH-Pyr in urine were detected by high performance liquid Chromatography (HPLC) . Results: The concentration of 1-OH-Nap、2-OH-Nap、1-OH-Pyr in urine of exposure group were significant higher than that of control group (P<0...
April 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28611092/altering-metabolic-profiles-of-drugs-by-precision-deuteration-2-discovery-of-a-deuterated-analog-of-ivacaftor-with-differentiated-pharmacokinetics-for-clinical-development
#5
Scott L Harbeson, Adam J Morgan, Julie F Liu, Ara M Aslanian, Sophia Nguyen, Gary W Bridson, Christopher L Brummel, Lijun Wu, Roger D Tung, Lana Pilja, Virginia Braman, Vinita Uttamsingh
Ivacaftor is currently used for the treatment of cystic fibrosis as both monotherapy (Kalydeco®) and combination therapy with lumacaftor (Orkambi®). Each therapy targets specific patient populations: Kalydeco treats patients carrying one of nine gating mutations in the cystic fibrosis transmembrane conductance regulator protein (CFTR), while Orkambi treats patients homozygous for the F508del CFTR mutation. In this study, we explored the pharmacological and metabolic effects of precision deuteration chemistry on ivacaftor by synthesizing two novel deuterated ivacaftor analogs, CTP-656 (d9-ivacaftor) and d18-ivacaftor...
June 13, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28608324/translation-and-validation-of-chronic-liver-disease-questionnaire-cldq-in-tamil-language
#6
Amit Goel, Karunanithi Arivazhagan, Avani Sasi, Vanathy Shanmugam, Seleena Koshi, Biju Pottakkat, C P Lakshmi, Ashish Awasthi
BACKGROUND: Chronic liver disease questionnaire (CLDQ), a self-administered quality-of-life (QOL) instrument for chronic liver disease (CLD) patients, was originally developed in English language. We aimed to translate and validate CLDQ in Tamil language (CLDQ-T). METHODS: CLDQ-T, prepared by two forward and two backward independent translations by four bilingual (Tamil and English) persons, and repeated iterative modifications, was validated in adult, native-Tamil patients with CLD...
June 13, 2017: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/28601158/effect-of-corifollitropin-alfa-supplemented-with-or-without-lh-on-ovarian-stimulation-and-embryo-viability-in-rabbit
#7
María Pilar Viudes-de-Castro, Francisco Marco-Jiménez, José Isaí Cedano-Castro, José Salvador Vicente
There is increasing interest in using rabbits for research as a laboratory model as well as for industrial production of meat, wool and fur. Superovulation in animals is used to produce a maximum number of transferable embryos per donor, in order to either support genetic improvement programs, ex situ conservation or to optimize other biotechnologies. Over time, the use of this biotechnology has shown variable outcomes as a consequence of several factors, such as the origin of exogenous hormone, posology and the effect of gonadotropins used simultaneously, the donor and the environment...
August 2017: Theriogenology
https://www.readbyqxmd.com/read/28600481/optimal-thresholds-for-ischemic-penumbra-predicted-by-computed-tomography-perfusion-in-patients-with-acute-ischemic-stroke-treated-with-mechanical-thrombectomy
#8
Katsuharu Kameda, Junji Uno, Ryosuke Otsuji, Nice Ren, Shintaro Nagaoka, Kazushi Maeda, Yoshiaki Ikai, Hidefuku Gi
BACKGROUND AND PURPOSE: Optimal thresholds for ischemic penumbra detected by CT perfusion (CTP) in patients with acute ischemic stroke (AIS) have not been elucidated. In this study we investigated optimal thresholds for salvageable ischemic penumbra and the risk of hemorrhagic transformation (HT). METHODS: A total of 156 consecutive patients with AIS treated with mechanical thrombectomy (MT) at our hospital were enrolled. Absolute (a) and relative (r) CTP parameters including cerebral blood flow (aCBF and rCBF), cerebral blood volume (aCBV and rCBV), and mean transit time (aMTT and rMTT) were evaluated for their value in detecting ischemic penumbra in each of seven arbitrary regions of interest defined by the major supplying blood vessel...
June 9, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28583996/neurons-over-nephrons-systematic-review-and-meta-analysis-of-contrast-induced-nephropathy-in-patients-with-acute-stroke
#9
Waleed Brinjikji, Andrew M Demchuk, Mohammad H Murad, Alejandro A Rabinstein, Robert J McDonald, Jennifer S McDonald, David F Kallmes
BACKGROUND AND PURPOSE: Because of the perceived risk of contrast-induced acute kidney injury (AKI), many centers require pre-imaging serum creatinine levels, potentially delaying care. We performed a systematic review and meta-analysis evaluating AKI rates in patients with acute ischemic stroke receiving computed tomographic angiography (CTA) and computed tomographic perfusion (CTP). METHODS: We searched MEDLINE, EMBASE, and the Web of Science through December 2016 for studies reporting on AKI in patients with acute ischemic stroke receiving CTA/CTP...
June 5, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28583650/early-response-evaluation-using-ct-perfusion-one-day-after-transarterial-chemoembolization-for-hcc-predicts-treatment-response-and-long-term-disease-control
#10
Dietmar Tamandl, Fredrik Waneck, Wolfgang Sieghart, Sylvia Unterhumer, Claus Kölblinger, Pascal Baltzer, Ahmed Ba-Ssalamah, Christian Loewe
PURPOSE: To determine the value of CT perfusion (CTP) for early response assessment after transarterial chemoembolization (TACE) for hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Between April 2013 and April 2015, 41 HCC (16 patients) were included in this study. CT perfusion was performed before and one day after TACE. Blood flow (BF), blood volume (BV), time to start (TTS), arterial liver perfusion (ALP), portal liver perfusion (PVP) and hepatic perfusion index (HPI) were measured...
May 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28583459/a-retrospective-study-of-clinical-outcomes-after-endovascular-treatment-in-acute-ischemic-stroke-patients-with-complete-anterior-circulation-infarction-taci-in-the-absence-of-multimodal-ct
#11
Chenghua Xu, Anyang Tao, Peng Wang, Zhimin Wang, Yi Zhang, Xiaoxiao Tao, Huaping Xin, Xian Zheng, Jiangxian Ying
OBJECTIVE: To analyze the positive predictive value of large artery occlusion and clinical prognosis in acute ischemic stroke patients with total anterior circulation infarct (TACI) who underwent endovascular treatment in the absence of multimodal CT angiography (CTA)/ CT perfusion (CTP). METHODS: The inclusion criteria for the acute ischemic stroke patients to receive endovascular treatment were as the follows: the OCSP classification was TACI, Alberta Stroke Program Early Computed Tomography Score (ASPECTS) ≥ 6, National Institutes of Health stroke scale (NIHSS) score ≥8, and within 4...
June 2, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28580533/quantitative-assessment-on-blood-brain-barrier-permeability-of-acute-spontaneous-intracerebral-hemorrhage-in-basal-ganglia-a-ct-perfusion-study
#12
Haoli Xu, Rui Li, Yuxia Duan, Jincheng Wang, Shuailiang Liu, Yue Zhang, Wenwen He, Xiaotao Qin, Guoquan Cao, Yunjun Yang, Qichuan Zhuge, Jun Yang, Weijian Chen
PURPOSE: Blood-brain barrier (BBB) damage aggravates perihematomal edema, and edema volume predicts prognosis independently. But the BBB permeability at the late stage of acute intracerebral hemorrhage (ICH) patients is uncertain. We aimed to assess the BBB permeability of spontaneous basal ganglia ICH using computed tomographic perfusion (CTP) and investigates its relationship with hematoma and perihematomal edema volume. METHODS: We performed CTP on 54 consecutive ICH patients within 24 to 72 h after symptom onset...
June 3, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28577254/the-value-of-whole-brain-ct-perfusion-imaging-and-ct-angiography-using-a-320-slice-ct-scanner-in-the-diagnosis-of-mci-and-ad-patients
#13
Bo Zhang, Guo-Jun Gu, Hong Jiang, Yi Guo, Xing Shen, Bo Li, Wei Zhang
OBJECTIVES: To validate the value of whole-brain computed tomography perfusion (CTP) and CT angiography (CTA) in the diagnosis of mild cognitive impairment (MCI) and Alzheimer's disease (AD). METHODS: Whole-brain CTP and four-dimensional CT angiography (4D-CTA) images were acquired in 30 MCI, 35 mild AD patients, 35 moderate AD patients, 30 severe AD patients and 50 normal controls (NC). Cerebral blood flow (CBF), cerebral blood volume (CBV), mean transit time (MTT), time to peak (TTP), and correlation between CTP and 4D-CTA were analysed...
June 2, 2017: European Radiology
https://www.readbyqxmd.com/read/28575302/impact-of-computed-tomography-myocardial-perfusion-following-computed-tomography-coronary-angiography-on-downstream-referral-for-invasive-coronary-angiography-revascularization-and-outcome-at-12-months
#14
Alexander R van Rosendael, Aukelien C Dimitriu-Leen, Michiel A de Graaf, Erik W van Zwet, J Wouter Jukema, Jeroen J Bax, Lucia J Kroft, Arthur J Scholte
Aims: The aim of this study was to assess the impact of adding stress computed tomography (CT) myocardial perfusion (CTP) to coronary CT angiography (CTA) on downstream referral for invasive coronary angiography (ICA), revascularization, and outcome in patients presenting with new-onset chest pain. Methods and results: Three hundred and eighty-four patients were referred for cardiac CT. Patients with lesions ≥50% stenosis underwent subsequently stress CTP. Perfusion scans were considered abnormal if a defect was observed in ≥ 1 segment...
May 29, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28574019/k-time-maximum-amplitude-of-thromboelastogram-predict-post-central-venous-cannulation-bleeding-in-patients-with-cirrhosis-a-pilot-study
#15
Chandra K Pandey, Vandana Saluja, Kumar Gaurav, Manish Tandon, Vijay K Pandey, Ajeet S Bhadoria
BACKGROUND & OBJECTIVES: Coagulation and haemostasis are dynamic processes. The haemostatic changes in liver disease affect all aspects of coagulation. The prothrombin time (PT)/ international normalized ratio (INR) was developed to monitor oral anticoagulant therapy and the activated partial thromboplastin time to investigate inheritable single factor deficiencies. Viscoelastic tests such as thromboelastogram (TEG) give information about dynamics of clot formation (coagulation factor and anticoagulant activity), clot strength (platelets and fibrinogen) and clot stability (finbrinolysis and factor XIII)...
January 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28545098/survival-and-prognostic-factors-for-patients-with-advanced-hepatocellular-carcinoma-after-stereotactic-ablative-radiotherapy
#16
Cheng-Hsiang Lo, Jen-Fu Yang, Ming-Yueh Liu, Yee-Min Jen, Chun-Shu Lin, Hsing-Lung Chao, Wen-Yen Huang
OBJECTIVE: To evaluate the survival outcomes and prognostic factors of patients with advanced hepatocellular carcinoma (HCC) who underwent stereotactic ablative radiotherapy (SABR). METHODS: This retrospective study evaluated patients with advanced HCC who underwent SABR between December 2007 and July 2015. All patients had Barcelona Clinic Liver Cancer stage C disease and Child-Turcotte-Pugh (CTP) class A-B function. In-field control (IFC), overall survival (OS), prognostic factors, and toxicity were evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28540209/myocardial-blood-flow-quantification-for-evaluation-of-coronary-artery-disease-by-computed-tomography
#17
REVIEW
Filippo Cademartiri, Sara Seitun, Alberto Clemente, Ludovico La Grutta, Patrizia Toia, Giuseppe Runza, Massimo Midiri, Erica Maffei
During the last decade coronary computed tomography angiography (CTA) has become the preeminent non-invasive imaging modality to detect coronary artery disease (CAD) with high accuracy. However, CTA has a limited value in assessing the hemodynamic significance of a given stenosis due to a modest specificity and positive predictive value. In recent years, different CT techniques for detecting myocardial ischemia have emerged, such as CT-derived fractional flow reserve (FFR-CT), transluminal attenuation gradient (TAG), and myocardial CT perfusion (CTP) imaging...
April 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28540208/myocardial-ct-perfusion-imaging-for-ischemia-detection
#18
REVIEW
Patricia Carrascosa, Carlos Capunay
Coronary computed tomography angiography (CCTA) plays an important role in many specific scenarios such as in symptomatic patients with intermediate pretest of coronary artery disease (CAD), as well as in the triage of patients with acute chest pain with TIMI risk ≤2. However, it cannot detect the presence of associated ischemia, which is critical for clinical decision making among patients with moderate to severe stenosis. Although functional information can be obtained with different non-invasive tools, cardiac CT is the unique modality that can perform a comprehensive evaluation of coronary anatomy plus the functional significance of lesions...
April 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28535599/monitoring-spatiotemporal-variations-in-nutrients-in-a-large-drinking-water-reservoir-and-their-relationships-with-hydrological-and-meteorological-conditions-based-on-landsat-8-imagery
#19
Yuan Li, Yunlin Zhang, Kun Shi, Guangwei Zhu, Yongqiang Zhou, Yibo Zhang, Yulong Guo
Nutrient enrichment is a major cause of water eutrophication, and variations in nutrient enrichment are influenced by environmental changes and anthropogenic activities. Accurately estimating nutrient concentrations and understanding their relationships with environmental factors are vital to develop nutrient management strategies to mitigate eutrophication. Landsat 8 Operational Land Imager (OLI) data is used to estimate nutrient concentrations and analyze their responses to hydrological and meteorological conditions...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28530158/analyzing-circle-of-willis-blood-flow-in-ischemic-stroke-patients-through-3d-stroke-arterial-flow-estimation
#20
Aichi Chien, Fernando Viñuela
Background The objective of ischemic stroke (IS) treatment is to achieve revascularization in cerebral arteries to restore blood flow. However, there is no available method to extract arterial flow data from clinical CTA images. We developed 3D Stroke Arterial Flow Estimation (SAFE), which provides blood flow data throughout the Circle of Willis based on 3D CTA and allows comparison of arterial flow distribution in the brain. Methods We implemented a newly developed 3D vascular reconstruction algorithm for clinical stroke CTA images...
January 1, 2017: Interventional Neuroradiology
keyword
keyword
23508
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"