Sökning: "thyroid volume"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden thyroid volume.

  1. 1. A Phantom Based Comparison of Image Segmentation Algorithms for Adaptive Functional Volume Determination of the Thyroid Gland using SPECT

    Uppsats för yrkesexamina på avancerad nivå, Stockholms universitet/Fysikum

    Författare :Henrik Berg; [2021]
    Nyckelord :Hyperthyroidism; Nuclear Medicine; SPECT; Functional Volume; Phantom Study; Adaptive Image Segmentation; Thresholding; Region Growing;

    Sammanfattning : Background One of the most used treatments for hyperthyroidism, is therapy with radioactive iodine (131I), which is accumulated in the thyroid gland. To determine the activity of 131I to be administered for a certain absorbed dose, the volume of the gland is of great importance but the historically used methods for estimating the functional volume of the gland are based on large approximations. LÄS MER

  3. 2. Quantification of I-131 Activity from Gamma Camera Images of Thyroid Cancer Patients

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Frida Westerbergh; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : BACKGROUND: Radioiodine (131I) has been used in thyroid cancer treatments for many years, and has demonstrated good results with regards to disease management. Radioiodine therapy is however partially empirical, as not very much is known concerning radiation dosimetry. LÄS MER

  4. 3. Thyroid carcinomas in dogs – a literature review and retrospective study on the outcome of treatment for dogs treated at the Swedish University Animal Hospital (UDS), Uppsala 2008-2018

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Clinical Sciences

    Författare :Lisa Ekström; [2019]
    Nyckelord :thyroid carcinoma; dog; canine; ectopic thyroid tissue; metastasis;

    Sammanfattning : Thyroid carcinomas is not the most common canine neoplasm, but since it is more common than the benign thyroid adenoma it is still an important disease to recognize. Most commonly it affects older dogs, with a mean age of about 10 years. LÄS MER

  5. 4. Volume calculation of the thyroid gland from SPECT images based on Monte Carlo simulations

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Radiofysik; Umeå universitet/Institutionen för fysik

    Författare :Niklas Palmqvist; [2018]
    Nyckelord :nuclear medicine xeleris thyroid hyperthyroidism thyrotoxicosis monte carlo technetium iodine;

    Sammanfattning : In this study the volume determination which is a part of the doseplanning for patients with thyrotoxicosis was investigated. The aim was to find an accurate method to determine the active volume with single photon emission tomography (SPECT) which in several studies have shown better results than with the currently used method planar scintigraphy (PS). LÄS MER

  7. 5. Determination of thyroid volume by ultrasound

    Kandidat-uppsats,

    Författare :Thu Nguyen Thi; [2016]
    Nyckelord :thyroid volume; ultrasound; transducer; radiographer;

    Sammanfattning : Background: Ultrasound is safe and painless, produces pictures of the inside of the body using sound waves (not use ionizing radiation), thus there is no radiation exposure to the patient. The thyroid gland is among the most commonly imaged glands using ultrasound due to the limitation of clinical examination. LÄS MER