8 research outputs found

    Gated myocardial perfusion SPECT underestimates left ventricular volumes and shows high variability compared to cardiac magnetic resonance imaging -- a comparison of four different commercial automated software packages

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    Abstract Background We sought to compare quantification of left ventricular volumes and ejection fraction by different gated myocardial perfusion SPECT (MPS) programs with each other and to magnetic resonance (MR) imaging. Methods N = 100 patients with known or suspected coronary artery disease were examined at rest with 99 mTc-tetrofosmin gated MPS and cardiac MR imaging. Left ventricular end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV) and ejection fraction (EF) were obtained by analysing gated MPS data with four different programs: Quantitative Gated SPECT (QGS), GE MyoMetrix, Emory Cardiac Toolbox (ECTb) and Exini heart. Results All programs showed a mean bias compared to MR imaging of approximately -30% for EDV (-22 to -34%, p Conclusions Gated MPS, systematically underestimates left ventricular volumes by approximately 30% and shows a high variability, especially for ESV. For EF, accuracy was better, with a mean bias between -15 and 6% of EF. It may be of value to take this into consideration when determining absolute values of LV volumes and EF in a clinical setting.</p

    Pain during vacuum-assisted breast biopsy: Are there any predictors?

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    Introduction: To assess the putative predictors that may be implicated in the pain experienced during stereotactic vacuum-assisted breast biopsy (VABB). Materials and methods: One hundred and thirty-five consecutive women with microcalcifications underwent VABB on the Fischer’s table. The visual analogue scale was used to measure the degree of the “average pain” (AP). Results: At the univariable analysis, the AP was positively associated with the duration of the procedure, the diagnosis of malignant/preinvasive lesions and the volume of blood lost. Although menopausal status was not associated with the AP, within the premenopausal subpopulation, luteal phase was associated with higher VAS score. These findings also persisted at the multivariable ordinal logistic regression model. However, the mean experienced pain was associated neither with the Volume of tissue excised nor with the hematoma formation, nor with patients’ age. Conclusion: The aforementioned factors were independent positive predictors of the mean experienced pain during VABB. (C) 2008 Elsevier Ltd. All rights reserved

    Falafel king: culinary customs and national narratives in Palestine

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    This article is the first in a series in which I propose to draw on the emergent and poly/trans disciplinary field of Food Studies in order to pursue questions of national identity, political struggle, cultural resistance and psychological survival in Palestine. There are several perspectives from which this connection between food and territoriality may be theorised. At first instance, for the purposes of this paper, I ask whether it is appropriate to draw on the cultural property paradigm in order to spotlight the possibilities and significance of claiming their cuisine as the intangible cultural heritage of Palestinians. This essay is a rhetorical cry for the repatriation and rehabilitation of regional specialties. The need to acknowledge, safeguard and celebrate Palestinian culture, its distinctive genius and the abundance and refinement of its traditions is part of the struggle for meaningful political change. The Palestinian ethnographic research included in this paper was conducted in collaboration with Bait al Karama, a local (Nablus based) NGO founded and run entirely by women, for local women. My methodology is rooted in the relationship between activism and academia
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