Infonet, September 15, 2008, Issue 10

A publication of the Governorʼs DD Council & ID Action. It was first created nearly two decades ago as a print-only publication, sent to a few hundred people. Today we offer our nearly 3,000 direct subscribers and a variety of services.

Infonet, June 15, 2008, Issue 8

A publication of the Governorʼs DD Council & ID Action. It was first created nearly two decades ago as a print-only publication, sent to a few hundred people. Today we offer our nearly 3,000 direct subscribers and a variety of services.

Brain Surface Segmentation of Magnetic Resonance Images of the Fetus

In this work we present a method for the image analysisof Magnetic Resonance Imaging (MRI) of fetuses. Our goalis to segment the brain surface from multiple volumes(axial, coronal and sagittal acquisitions) of a fetus. Tothis end we propose a two-step approach: first, a FiniteGaussian Mixture Model (FGMM) will segment the image into3 classes: brain, non-brain and mixture voxels. Second, aMarkov Random Field scheme will be applied tore-distribute mixture voxels into either brain ornon-brain tissue. Our main contributions are an adaptedenergy computation and an extended neighborhood frommultiple volumes in the MRF step. Preliminary results onfour fetuses of different gestational ages will be shown.

Reproducibility of 3D free-breathing magnetic resonance coronary vessel wall imaging.

AIMS: Although the coronary artery vessel wall can be imaged non-invasively using magnetic resonance imaging (MRI), the in vivo reproducibility of wall thickness measures has not been previously investigated. Using a refined magnetization preparation scheme, we sought to assess the reproducibility of three-dimensional (3D) free-breathing black-blood coronary MRI in vivo. METHODS AND RESULTS: MRI vessel wall scans parallel to the right coronary artery (RCA) were obtained in 18 healthy individuals (age range 25-43, six women), with no known history of coronary artery disease, using a 3D dual-inversion navigator-gated black-blood spiral imaging sequence. Vessel wall scans were repeated 1 month later in eight subjects. The visible vessel wall segment and the wall thickness were quantitatively assessed using a semi-automatic tool and the intra-observer, inter-observer, and inter-scan reproducibilities were determined. The average imaged length of the RCA vessel wall was 44.5+/-7 mm. The average wall thickness was 1.6+/-0.2 mm. There was a highly significant intra-observer (r=0.97), inter-observer (r=0.94), and inter-scan (r=0.90) correlation for wall thickness (all P<0.001). There was also a significant agreement for intra-observer, inter-observer, and inter-scan measurements on Bland-Altman analysis. The intra-class correlation coefficients for intra-observer (r=0.97), inter-observer (r=0.92), and inter-scan (r=0.86) analyses were also excellent. CONCLUSION: The use of black-blood free-breathing 3D MRI in conjunction with semi-automated analysis software allows for reproducible measurements of right coronary arterial vessel-wall thickness. This technique may be well-suited for non-invasive longitudinal studies of coronary atherosclerosis.

Report on the review of selected general and application controls over the State University of Iowa (University of Iowa) ePro System for the period June 15, 2009 through July 31, 2009

Report on the review of selected general and application controls over the State University of Iowa (University of Iowa) ePro System for the period June 15, 2009 through July 31, 2009

Secure and Prepared Newsletter, July 15, 2010, Vol. 6, no. 14

A bi-weekly newsletter for those involved in the fields of homeland security and/or emergency management

Secure and Prepared Newsletter, July 29, 2010, Vol. 6, no. 15

A bi-weekly newsletter for those involved in the fields of homeland security and/or emergency management

Abraham visionnaire apocalyptique. Lectures midrashiques de Genèse 15

(Résumé de l'ouvrage) Les trois grandes religions monothéistes se partagent un même ancêtre: Abraham. Pour les juifs, il est le Juste; les chrétiens voient en lui le Père des croyants et les musulmans le nomment Ami de Dieu. Il n'y a donc pas un discours sur Abraham, mais une multitude de lectures des textes fondamentaux et superbes qui racontent le destin d'Abraham dans la Bible. Dans ce livre, on propose quelques relectures du personnage et de son accueil dans l'histoire. Les auteurs permettent ainsi de redonner à la figure emblématique d'Abraham une jeunesse oh! combien nécessaire.

Aortic vessel wall magnetic resonance imaging at 3.0 Tesla: a reproducibility study of respiratory navigator gated free-breathing 3D black blood magnetic resonance imaging.

The purpose of this study was to evaluate a free-breathing three-dimensional (3D) dual inversion-recovery (DIR) segmented k-space gradient-echo (turbo field echo [TFE]) imaging sequence at 3T for the quantification of aortic vessel wall dimensions. The effect of respiratory motion suppression on image quality was tested. Furthermore, the reproducibility of the aortic vessel wall measurements was investigated. Seven healthy subjects underwent 3D DIR TFE imaging of the aortic vessel wall with and without respiratory navigator. Subsequently, this sequence with respiratory navigator was performed twice in 10 healthy subjects to test its reproducibility. The signal-to-noise (SNR), contrast-to-noise ratio (CNR), vessel wall sharpness, and vessel wall volume (VWV) were assessed. Data were compared using the paired t-test, and the reproducibility of VWV measurements was evaluated using intraclass correlation coefficients (ICCs). SNR, CNR, and vessel wall sharpness were superior in scans performed with respiratory navigator compared to scans performed without. The ICCs concerning intraobserver, interobserver, and interscan reproducibility were excellent (0.99, 0.94, and 0.95, respectively). In conclusion, respiratory motion suppression substantially improves image quality of 3D DIR TFE imaging of the aortic vessel wall at 3T. Furthermore, this optimized technique with respiratory motion suppression enables assessment of aortic vessel wall dimensions with high reproducibility.

EPI Update, October 15, 2010

Weekly newsletter for Center For Acute Disease Epidemiology of Iowa Department of Public Health.

Pure monoparesis: a particular stroke subgroup?

BACKGROUND: Acute stroke presenting as monoparesis is rare, with a pure motor deficit in the arm or leg extending to an isolated facial paresis. OBJECTIVE: To raise the question if acute stroke presenting as monoparesis is a different entity from stroke with a more extensive motor deficit. PATIENTS: In the Lausanne Stroke Registry (1979-2000), 195 (4.1%) of 4802 patients met the clinical criteria for pure monoparesis involving the face (22%), arm (63%), or leg (15%). RESULTS: In the vast majority of cases (> 95%), monoparesis corresponded to ischemic stroke with a favorable outcome, with initial computed tomography scans or magnetic resonance images showing no signs of hemorrhage. The lesion for a facial deficit was most frequently located subcortically (internal capsule); for an arm deficit, in the superficial middle cerebral artery; and for a leg deficit, in the anterior cerebral artery territory. In pure monoparesis, only 17% of the patients had more than 1 risk factor as compared with 26% of those with bimodal and trimodal hemiparesis and with 46% of all patients with stroke other than those with pure motor stroke. The only frequent risk factor was hypertension (53%); however, this frequency was no different from that in other patients with stroke. No major stroke etiology could be identified in any of the 3 subgroups of monoparesis. CONCLUSION: Our finding of a wide range of stroke localization and etiology in monoparesis without any particular subgroup suggests that no specific plan of investigation can be recommended for these patients.

Governor Culver’s 2008 Condition of the State Address, January 15, 2008

Speech by Governor Culver.

FY10 Enrich Iowa Report State Funding for Iowa Libraries, January 15, 2011

This report illustrates the critical role of Enrich Iowa funding in enhancing lifelong learning for Iowans through libraries; improving library resources aimed at assisting job seekers; maintaining library hours that meet library customers’ needs; improving library technology services; and providing safe, accessible library buildings.