101,891 research outputs found
Tracheopathia osteoplastica. A case report [Tracheopatia osteoplastica. Descrizione di un caso.]
No full textLow agreement of visual rating for detailed quantification of pulmonary emphysema in whole-lung CT.
No full textBACKGROUND: Multidetector spiral computed tomography (CT) has opened the possibility of quantitative evaluation of emphysema extent in the whole lung. Visual assessment can be used for such a purpose, but its reproducibility has not been established.
PURPOSE: To assess agreement of detailed assessment of pulmonary emphysema on whole-lung CT using a visual scale.
MATERIAL AND METHODS: Thirty patients with chronic obstructive pulmonary disease underwent whole-lung inspiratory CT. Four chest radiologists rated the same 22 ± 2 thin sections using a visual scale which defines a range of emphysema extent between 0 and 100. Two of them repeated the rating two months later. Inter- and intra-operator agreement was evaluated with the Bland and Altman method. In addition, the percentage of emphysema at -950 Hounsfield units in the whole lung was determined using fully automated commercially available software for 3D densitometry.
RESULTS: In three of six operator pairs and in one of two intra-operator pairs the Kendall τ test showed a significant correlation between the difference and the average magnitude of visual scores. Among different operators the half-width of 95% limits of agreement (95% LoA) was wide ranging between a score of 14.2-27.7 for an average visual score of 20 and between 18.5-36.8 for an average visual score of 80. Within the same operator the half-width of 95% LoA ranged between a score of 10.9-21.0 for an average visual score of 20 and between 25.1-30.1 for an average visual score of 80. The visual scores of the four radiologists were correlated with the results of densitometry (P < 0.001; r = 0.65-0.81).
CONCLUSION: The inter- and intra-operator agreement of detailed assessment of emphysema in the whole lung using a visual scale is low and decreases with increasing emphysema extent
Neoplastic involvement of pulmonary fissures. Usefulness of high resolution CT | [Coinvolgimento neoplastico delle scissure polmonari. Possibilità della TC ad alta risoluzione.]
No full textIn order to plan an adequate treatment, it is very important to recognize the transfissural spread of lung cancer near a pleural fissure, especially in the patients who cannot bear pneumonectomy because of impaired pulmonary function. Fifteen patients with lung cancer near a fissure were examined by means of conventional CT (10 mm-thick slices) followed by high-resolution CT (HRCT). The results obtained with both techniques were compared with surgical findings. At surgery, major fissure involvement was seen in 12 cases, minor fissure was involved in 3, and 2 patients were normal. In 4 cases fissural involvement was correctly demonstrated by conventional CT scans. Neoplastic involvement of the major fissure was identified in 13 cases by HRCT scans, with only 1 false positive. Pleural fissures appear as thin and sharp lines on HRCT scans. Thus, the relationship of lung cancers to fissures is better identified and the accuracy of the method in defining neoplastic spread is higher. However, the relationship of a neoplastic mass to the minor fissure is difficult to evaluate, because the fissure is roughly parallel to the scanning plane
[Possibility of false negative results in the diagnosis of lung neoplasms with computerized tomography]
No full textTo describe the radiological appearance of overlooked malignant pulmonary lesions at CT and to analyze the reasons of misdiagnosis
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
Percorso per il miglioramento della qualita' assistenziale attraverso lo studio delle dimissioni contro il parere dei sanitari: risultati preliminari
No full textOBIETTIVI: Obiettivo del presente studio è valutare il numero delle dimissioni, su base volontaria del paziente contro il parere dei sanitari, dei ricoveri ordinari (RO) e in Day Hospital (DH) effettuati presso i presidi
ospedalieri dell’Azienda USL RMF nel corso dell’anno 2009. Tale analisi
rientra in un percorso aziendale finalizzato al miglioramento della qualità
assistenziale e all’identificazione delle potenziali criticità che hanno contribuito
a generare tale tipologia di dimissione.
MATERIALI: Il percorso di miglioramento della qualità assistenziale è
articolato in 3 fasi: 1. Analisi dei dati. Valutazione delle dimissioni volontarie,
relativamente all’anno 2009, dei RO e di DH effettuati nei due Presidi
Ospedalieri (San Paolo di Civitavecchia e Padre Pio di Bracciano), attraverso
l’analisi dell’archivio informatico delle Schede di Dimissione Ospedaliera
del Servizio Informativo Sanitario aziendale. 2. Verifica di un campione di
cartelle cliniche (CC) per identificare le criticità emerse durante il ricovero.
3. Interventi correttivi per ridurre la quota delle dimissioni volontarie e
migliorare le criticità organizzative.
RIASSUNTO: La prima fase dello studio ha illustrato il numero totale dei
RO e di DH effettuati nel 2009 ovvero 13.358 di cui il 74% (n=9898) erogati
presso il San Paolo e il restante 26% (n=3460) al Padre Pio. Nel primo
nosocomio, il numero delle dimissioni volontarie è stato pari al 11.8%
(n=960) sul totale di 8118 RO e dell’11.3% (n=202) sul totale di 1780 DH,
interessando prevalentemente le donne (62%) di età compresa tra 30 e 39
anni (29%). L’ospedale Padre Pio ha riportato, invece, rispettivamente il
11.8% (n=331) sul totale di 2777 RO e l’0,6% (n=4) sul totale 663 DH, con
un coinvolgimento che ha riguardato soprattutto uomini (56%) di età
compresa tra 40-44 e 75-79 anni (22%). Complessivamente tale modalità
di dimissione, sia per i RO che per il DH, si registra per lo più in alcuni
reparti di degenza: ginecologia (30%), medicina generale (23%), chirurgia
generale (14%) e osservazione breve (10%).
CONCLUSIONI: L’indagine condotta all’interno dell’Azienda, in qualità di
“studio pilota”, ha permesso di individuare i reparti a maggiore “criticità”. In
un secondo step sarà possibile individuare, anche attraverso la
consultazione diretta delle CC (ed eventuali interviste mirate con i dirigenti
medici ed infermieristici) le problematiche e le cause sulle quali intervenire,
in termini organizzativi o di appropriatezza dei percorsi assistenziali, al fine
di migliorare la qualità percepita da parte dei cittadini, rafforzando così la
Clinical Governance aziendale
The Right to Strike under the United States Constitution: Theory, Practice, and Possible Implications for Canada
No full textAnswering critics of the Canadian Supreme Court's judgment in B.C. Health, the author argues that the Court laid the foundation for a principled and durable doctrine protecting constitutional labour rights, one that goes directly to the heart of the matter — the inequality of workers’ power in the employment relation. In the author’s view, two paths could lead from B.C. Health to the recognition of Charter protec- tion for a right to strike: one that treats the right as an accessory to col- lective bargaining, and one that upholds the right directly on the basis of the Charter values of equality and participation. The author supports the latter approach, contending that constitutional rights should be defined in relation to fundamental values, in a way that is not contingent on time-bound or fact-sensitive assessments about the role of strikes within a particular collective bargaining regime. Although a Charter right to strike may involve the courts in difficult choices about when to defer to legislative policy decisions, and courts may lack the institutional capac- ity to deal effectively with labour law issues, the author points out that judges can look to ILO standards for expert guidance. Noting that the U.S. experience in this area might be of considerable use to Canadians, the author concludes by providing an overview of American case law concerning a constitutional right to strike.Peer reviewe
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