50 research outputs found

    Measurement of the impact of Winona Health Online

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    The purpose of this article is to present the methodology to study the clinical and financial outcomes associated with the use of Winona Health Online, a novel community-wide interactive healthcare Website in Winona, Minnesota. Outcome methodology was developed by the University of Minnesota School of Public Health and the Carlson School of Management in cooperation with nationally recognized outcomes and disease state management experts, healthcare practitioners in Winona, statisticians, and health economists. The main areas of measurement include health status, satisfaction, cost and utilization of services, and clinical quality

    Clinical utility of nuclear imaging in the evaluation of pediatric adrenal neoplasms

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    Adrenal neoplasms rarely occur in children. They can be diagnosed in the presence of endocrine, metabolic or neurological problems, an abdominal mass, more rarely an adrenal incidentaloma, or in the context of an adrenal mass discovered in the evaluation of childhood cancer including hematologic malignancy. According to standard medical practice, pediatric malignancies are almost always evaluated by 18F-fluorodeoxyglucose positron emission tomography with computed tomography ([18F]FDG PET/CT). Nuclear imaging using specific radiotracers is also an important tool for diagnosing and staging neuroblastoma, pheochromocytoma, hormone hypersecretion, or indeterminate adrenal masses. The Hippocratic oath “primum non nocere” encourages limitation of radiation in children per the ALARA concept (as low as reasonably achievable) but should not lead to the under-use of nuclear imaging because of the potential risk of inaccurate diagnosis or underestimation of the extent of disease. As in adults, nuclear imaging in children should be performed in conjunction with hormone evaluation and morphological imaging

    Efficacy of anterior gastric fundoplication in the treatment of gastroesophageal reflux in infants and children

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    Anterior gastric fundoplication (AGF) has been performed at the University of Michigan since 1988. To objectively evaluate the long-term efficacy of the AGF, the authors performed a study of children who had undergone AGF between June 1988 and June 1990 (n = 46). Six of them died of unrelated causes. Twenty-two consented to follow-up evaluation that included parental interview, physical examination, upper gastrointestinal series (UGI), 24-hour esophageal pH probe monitoring (EpH), and a liquid-phase gastric emptying study. Twenty patients (74%) remained asymptomatic, patients exhibited gastroesophageal reflux (GER) by UGI, and three others by EpH. Three children were noted to have delayed gastric emptying. These results compare favorably with data previously reported from this institution of a 5-year follow-up of children after Nissen fundoplication. There is a trend toward improved efficacy (87% v 74%; P = .12), decreased reoperation rate (4% v 14%; P = .11), and less severe complications. The present study shows that AGF is effective treatment for GER when evaluated by objective studies and is comparable in therapeutic efficacy and safety to the Nissen fundoplication.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/31949/1/0000902.pd

    FDG PET imaging of paragangliomas of the neck: comparison with MIBG SPET

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    Two patients with cervical paragangliomas underwent positron emission tomography (PET) with 2-[ 18 F]-fluoro-2-deoxy-D-glucose (FDG). There was marked tumor uptake and retention of FDG. Adjacent salivary gland accumulation of FDG was minimal, though quite prominent with meta -iodobenzylguanidine. FDG PET offers another potentially useful approach to functional imaging of these uncommon tumors, independent of the presence of specific amine uptake mechanisms or cell surface receptors required by other scintigraphic techniques.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/46837/1/259_2004_Article_BF00801625.pd

    MIBG avidity correlates with clinical features, tumor biology, and outcomes in neuroblastoma: A report from the Children’s Oncology Group

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    BackgroundPrior studies suggest that neuroblastomas that do not accumulate metaiodobenzylguanidine (MIBG) on diagnostic imaging (MIBG non‐avid) may have more favorable features compared with MIBG avid tumors. We compared clinical features, biologic features, and clinical outcomes between patients with MIBG nonavid and MIBG avid neuroblastoma.ProcedurePatients had metastatic high‐ or intermediate‐risk neuroblastoma and were treated on Children’s Oncology Group protocols A3973 or A3961. Comparisons of clinical and biologic features according to MIBG avidity were made with chi‐squared or Fisher exact tests. Event‐free (EFS) and overall (OS) survival compared using log–rank tests and modeled using Cox models.ResultsThirty of 343 patients (8.7%) had MIBG nonavid disease. Patients with nonavid tumors were less likely to have adrenal primary tumors (34.5 vs. 57.2%; P = 0.019), bone metastases (36.7 vs. 61.7%; P = 0.008), or positive urine catecholamines (66.7 vs. 91.0%; P < 0.001) compared with patients with MIBG avid tumors. Nonavid tumors were more likely to be MYCN amplified (53.8 vs. 32.6%; P = 0.030) and had lower norepinephrine transporter expression. Patients with MIBG nonavid disease had a 5‐year EFS of 50.0% compared with 38.7% for patients with MIBG avid disease (P = 0.028). On multivariate testing in high‐risk patients, MIBG avidity was the sole adverse prognostic factor for EFS identified (hazard ratio 1.77; 95% confidence interval 1.04–2.99; P = 0.034).ConclusionsPatients with MIBG nonavid neuroblastoma have lower rates of adrenal primary tumors, bone metastasis, and catecholamine secretion. Despite being more likely to have MYCN‐amplified tumors, these patients have superior outcomes compared with patients with MIBG avid disease.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/138438/1/pbc26545_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/138438/2/pbc26545.pd

    Cerebral benzodiazepine receptor binding in vivo in patients with recurrent hepatic encephalopathy

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    Increased activation of the central benzodiazepine receptor (BZR) appears to play an important role in hepatic encephalopathy (HE). However, there is controversy regarding whether the density or affinity of BZRs is altered. A previous positron emission tomography (PET) study using the BZR antagonist [11C]flumazenil (FMZ) found two- to threefold greater cerebral cortical tracer uptake in recurrent HE, but did not account for impaired FMZ metabolism due to liver disease or assess the relative contributions of tracer delivery versus BZR binding. We hypothesized that correcting for these factors would affect estimations of BZR binding in HE. Nine patients with recurrent HE and 13 age-comparable controls were studied with [11C]FMZ PET. After intravenous administration of [11C]FMZ, arterial blood samples were collected, and PET images were acquired over 60 minutes. FMZ transport and binding maps were calculated for each subject by using a physiological tracer kinetic model. In agreement with the previous report, we found that FMZ reached a much higher level and was retained longer in the HE cerebral cortex despite similar total blood radioactivity levels in the two groups. However, the patients showed impaired hepatic metabolism of FMZ. After physiological modeling incorporating these data, significant increases in BZR binding were found in the thalamus (13%), cerebellum (20%), and pons (23%). There were minor, statistically insignificant increases in cerebral cortical (10%), putamen (12%), and whole brain (12%) BZR binding in patients with recurrent HE. These findings are in general agreement with results of autopsy studies, confirming a lack of major increases in cortical or basal ganglial BZR binding in HE. They emphasize that physiological tracer modeling should be used and altered peripheral radioligand metabolism considered in future PET studies of HE.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/34769/1/510260204_ftp.pd

    WXYZ, channel 7, Detroit, MI

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    Includes bibliographical references (pages 16-17)This thesis describes the process, style, and content of a documentary video focused on the operations of a news organization. The accompanying documentary examines a 14-hour period of news operations at WXYZ, Channel 7, in Detroit, Michigan. Behind the Scenes utilizes a cinema verite approach that involves interviews and a direct cinema footage in its presentation. Exploring the relationship between the news staff and the television medium, the video portrays the challenges a news organization has in balancing coverage, bias, technology, and external influences. The narrative structure is constructed through the daily news schedule of WXYZ. Within this time structure, the documentary follows key personnel through a typical day of producing news product for the daily newscasts.M.A. (Master of Arts
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