Value of Dual-energy Lung Perfusion Imaging Using a Dual-source CT System for the Pulmonary Embolism
6
Citation
20
Reference
10
Related Paper
Citation Trend
Abstract:
To investigate the diagnostic value of dual-energy lung perfusion imaging (DEPI) using a dual-source CT system for the pulmonary embolism (PE).50 patients in high acute PE prevalence were enrolled to accept the DEPI (lung perfusion image and CTA image of pulmonary artery acquired through the Dual Energy software) and emergent DSA angiography (golden diagnostic criterion).Patients using CT had significantly reduced examination duration and dosage of contrast agent than those using DSA examination, (P < 0.05). In total, 260 pulmonary arteries and 1020 pulmonary segments were examined through CTA, in which embolisms were identified in 50 lobes of lung, 108 pulmonary segments and 82 sub-segments. Reduction or lack of perfusion was identified through DEPI in 48 lobes of lung (concordance rate of 96.0%), 103 pulmonary segments (concordance rate of 95.4%) and 78 subsegments (concordance rate of 95.1%). The comparison of embolism quantity and morphological characteristics of pulmonary artery between CTA images and DEPI images showed no statistically significant difference.Better application value can be achieved in the diagnosis of pulmonary embolism by dual-energy lung perfusion imaging using a dual-source CT system.Keywords:
Pulmonary angiography
Concordance
Dual energy
Background:Patient-physician concordance is an important concern in the treatment of elderly patients with hypertension (HT). Treatment that considers concordance is necessary for mutual understanding and therapeutic satisfaction between patients and physicians. However, there have been no studies addressing concordance that objectively analyzed both patient and physician satisfaction before and after treatment.
Concordance
Hypertension treatment
Cite
Citations (4)
Concordance
Medication Reconciliation
Cite
Citations (0)
Objective To compare the diagnostic value of 99 Tcm-MAA pulmonary perfusion imaging with that of pulmonary angiography for pulmonary involvement in Takayasu′s arteritis.Methods Twenty-one patients (19 women, 2 men), with diagnosed Takayasu′s arteritis and underwent both 99 Tcm-MAA pulmonary perfusion imaging and pulmonary angiography, were retrospectively analyzed.Results Out of the 21 patients, pulmonary angiography detected 11 patients with pulmonary artery involvement whereas 13 patients were revealed perfusion defects by pulmonary perfusion imaging. The agreement of diagnosis by pulmonary perfusion imaging with that by pulmonary angiography existed in 19 patients (90.5%, Kappa=0.81, P 0.0001). There were 331 pulmonary segments consistently diagnosed by pulmonary perfusion imaging and pulmonary angiography in 378 pulmonary segments (87.5%, Kappa=0.74, P 0.0001).Conclusions Pulmonary perfusion imaging is highly accorded with pulmonary angiography in detecting the pulmonary involvement in Takayasu′s arteritis. Therefore, pulmonary perfusion imaging could be used as a non-invasive screening test for the pulmonary artery involvement in Takayasu′s arteritis.
Pulmonary angiography
Takayasu's arteritis
Arteritis
Left pulmonary artery
Cite
Citations (0)
During the 1990s, we estimated the genetic contribution to Parkinson's disease risk in a large, population‐based twin registry. Because many unaffected twins were still alive, previous concordance estimates were based on incomplete information. Ninety‐five percent of twins are now deceased. Here, we update concordance and heritability through 2015 using National Death Index data. In total, we identified 30 concordant and 193 discordant pairs. Proband‐wise concordance was 0.20 in monozygotic and 0.13 in dizygotic pairs. Heritability was 0.27 overall, 0.83 in pairs diagnosed ≤50, and 0.19 in pairs diagnosed >50. High concordance in dizygotic twins suggests shared effects of early childhood environment. Ann Neurol 2019;85:600–605
Concordance
Proband
Dizygotic twins
Dizygotic twins
Cite
Citations (88)
Delineating patients’ health profiles is essential to allow for a proper comparison between medical care and its results in patients with comorbidities. The aim of this work was to evaluate the concordance of health profiles outlined by ward doctors and by epidemiologists and the effectiveness of training interventions in improving the concordance. Between 2018 and 2021, we analyzed the concordance between the health profiles outlined by ward doctors in a private hospital and those outlined by epidemiologists on the same patients’ medical records. The checks were repeated after training interventions. The agreement test (Cohen’s kappa) was used for comparisons through STATA. The initial concordance was poor for most categories. After our project, the concordance improved for all categories of CIRS. Subsequently, we noted a decline in concordance between ward doctors and epidemiologists for CIRS, so a new training intervention was needed to improve the CIRS profile again. Initially, we found a low concordance, which increased significantly after the training interventions, proving its effectiveness.
Concordance
Medical record
Kappa
Cite
Citations (1)
Concordance
Cite
Citations (0)
Twin concordance rates are usually reported without reference to the number of parents affected, apparently because the simple demonstration that monozygotic (MZ) twins are more concordant than are dizygotic (DZ) twins is the goal of most twin studies. Depending on the underlying mechanism, however, twin concordance rates can vary widely when conditioned on the number of parents affected. For the generalized single-locus model it is shown that conditional concordance rates in monozygotic twins, along with an estimate of the disorder's prevalence in the population, uniquely specify the underlying parameters of this important model. Knowledge of the exact parameter set is essential for competent genetic counseling.
Concordance
Dizygotic twins
Monozygotic twin
Dizygotic twins
Cite
Citations (0)
Although some scholars suggest that racial/ethnic concordance between physicians and patients will do much to eliminate disparities in medical care, the evidence for concordance effects is mixed. Using nationally representative data with an oversample of blacks and Latinos, this study examines a variety of topics, including beliefs about and preferences for concordance, the effects of concordance on patient experiences, and interactions between expectations and experiences. The results point to the limited effects of concordance in general but illuminate for whom concordance matters most. The results encourage more nuanced and contingent theories. They suggest that racial/ethnic concordance holds little salience in the minds of most black and Latino patients and that discordance has little effect. Nevertheless, there is some evidence that concordance has a positive effect among those who prefer concordance-thus the apparent effects of concordance might reflect the effects of patient choice more than concordance per se. The conclusion sketches policy implications, including the merits of promoting concordance among targeted groups of patients, even in the absence of overall effects on disparities.
Concordance
Salience (neuroscience)
Cite
Citations (53)
To compare the diagnostic value of (99)Tc(m)-MAA pulmonary perfusion imaging with that of pulmonary angiography for pulmonary involvement in Takayasu's arteritis.Twenty-one patients (19 women, 2 men), with diagnosed Takayasu's arteritis and underwent both (99)Tc(m)-MAA pulmonary perfusion imaging and pulmonary angiography, were retrospectively analyzed.Out of the 21 patients, pulmonary angiography detected 11 patients with pulmonary artery involvement whereas 13 patients were revealed perfusion defects by pulmonary perfusion imaging. The agreement of diagnosis by pulmonary perfusion imaging with that by pulmonary angiography existed in 19 patients (90.5%, Kappa = 0.81, P < 0.0001). There were 331 pulmonary segments consistently diagnosed by pulmonary perfusion imaging and pulmonary angiography in 378 pulmonary segments (87.5%, Kappa = 0.74, P < 0.0001).Pulmonary perfusion imaging is highly accorded with pulmonary angiography in detecting the pulmonary involvement in Takayasu's arteritis. Therefore, pulmonary perfusion imaging could be used as a non-invasive screening test for the pulmonary artery involvement in Takayasu's arteritis.
Pulmonary angiography
Takayasu's arteritis
Arteritis
Cite
Citations (1)
Non-concordance has often been reported as a major contributor to the failure of occlusion therapy for amblyopia. In other fields of medicine the extent of a patient's understanding in areas of the disease and treatment has been shown to have both a direct and indirect effect on subsequent concordance. The aims of this study were to determine the extent of parental non-concordance, to assess their level of understanding in key areas of amblyopia, occlusion therapy, critical period and prognosis, and to discover the parent's own reasons for failing to concord.Parents of children aged 2-7 years receiving a minimum of 1 hour of occlusion for unilateral amblyopia were recruited. Parental concordance was monitored using a diary and their understanding and reasons for non-concordance were assessed by a questionnaire. Concordance was analysed by calculating a concordance index, determining the proportion of non-concordance, and also by classifying the non-concordance on the basis of whether the behaviour was intentional or unintentional and whether the parents were adequately or inadequately informed.Parental non-concordance was defined as failing to occlude less than 80% of the total prescribed time. The median concordance index was 0.75 and the proportion of non-concordant parents was 0.54 (95% CI 0.41 to 0.67) (n = 57). Parental knowledge was poor in areas of the critical period with 23% of parents unaware of an age limit to the treatment. Reasons for non-concordance given by 68% of parents demonstrated poor knowledge.A substantial proportion of the non-concordant parents had poor understanding in areas such as the critical period and errors also occurred in implementing the treatment regimen. Increased parental awareness of the rationale and urgency of the treatment, with reinforcement of details of the regimen, would help to reduce non-concordance with occlusion therapy.
Concordance
Cite
Citations (96)