Sökning: "PG Lindgren"

Hittade 3 avhandlingar innehållade orden PG Lindgren.

  1. 1. Core Biopsy of Breast and Axillary Lesions : Technical and Clinical Aspects

    Författare :Shahin Abdsaleh; PG Lindgren; Per Skaane; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Automatic core needle biopsy; Semiautomatic core needle biopsy; Surgical specimen; Dynamic needle behavior; Hormone Receptors; Radiologisk forskning; Radiological research; Radiologisk forskning;

    Sammanfattning : The aims of this work were to image and analyze the needle behavior at automated core biopsy, to investigate the clinical utility of an alternative core biopsy technique using a semiautomated gun in breast and axillary lesions, and also to compare core biopsy with surgical specimens in malignant breast lesions regarding histologic features and hormone receptor expression.In two experimental studies, using butter and silicon phantoms, respectively, the needle pass was imaged and its dynamic behavior studied. LÄS MER

  3. 2. Power Doppler - Principles and Potential Clinical Applications

    Författare :Anders Nilsson; PG Lindgren; Torbjörn Andersson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Ultrasonography; Doppler studies; Power Doppler; Volume flow; Radiologisk forskning; Radiological research; Radiologisk forskning;

    Sammanfattning : The purpose of this work was to: a) Determine whether the amount of colour in a power Doppler image is dependent on the angle between the examined vessel and the soundbeam and/or on the velocity of the flow within the vessel; b) Investigate if a dependency on flow velocity could be used for the detection of volume flow differences and c) Define clinical applications utilising the improved sensitivity to low flow of PD.In the experimental studies (study I and II) a silicon tube in a water bath was insonated, the insonation angle and the volume flow changed and the resulting images stored, transferred to a personal computer and analysed with regard to the amount of colour present in the image. LÄS MER

  4. 3. Search for Type 2 Diabetes Susceptibility Genes Using Multiple Approaches

    Författare :Cecilia Lindgren; Malmö Institutionen för kliniska vetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; single nucleotide polymorphism SNP ; transmission-disequilibrium test TDT ; genetic variation; single strand conformational polymorphism SSCP ; gene expression; insulin; glucose; genome-wide scan; linkage; genetic association; Type 2 diabetes; early onset diabetes EOD ; sekretion; diabetologi; Endokrinologi; diabetology; Endocrinology; secreting systems; signal-to-noise ratio SNR ;

    Sammanfattning : Type 2 diabetes mellitus is a multifactorial disorder characterized by chronic hyperglycemia resulting from pancreatic dysfunction and insulin resistance. It is a common disorder with a complex pattern of inheritance, likely to reflect the influence of multiple genetic and environmental factors on the diabetes risk. LÄS MER