Medicinsk strålningsvetenskap
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Can cooking practices affect dietary exposure to 210Po in seafood?
(2024-11-13)Background: The estimated yearly worldwide average exposure to radiation is about three mSv, with 2.4 mSv coming from natural radiation sources. 210Po is a highly radiotoxic decay product of 238U and a major contributor ... -
Developing an Energy Resolution Model for Monte Carlo-Based SPECT Simulation and Reconstruction Using a GE Discovery NM/CT 670 Pro System
(2024-09-23)Aim: In order to apply Monte Carlo (MC)-based algorithms for simulations of gamma camera acquisitions, the intrinsic characteristics of the system must be properly defined. This study aimed to determine the energy resolution ... -
Treatment Plan Quality for Deep Inspiration Breath-Hold Breast Cancer Radiation Therapy - Comparison between Conventional Technique and Modulated Approaches
(2024-09-23)Introduction: Breast cancer remains a significant health concern globally, impacting millions of individuals each year [1]. Radiation therapy, an adjuvant to surgery and chemotherapy, aims to eliminate residual cancer ... -
Age-Related Late Effects in Rat Thyroids After Internal 131I Exposure
(2024-09-23)The Chernobyl nuclear accident left many questions in its wake. One of these questions was why children affected by the radioactive fallout seemed to have a higher incidence of thyroid cancer compared with adults in the ... -
VALUATION OF CHALLENGES IN SPECT-BASED DOSIMETRY IN THE TREATMENT OF METASTATIC PROSTATE CANCER WITH 177LU-PSMA-617
(2024-09-23)Introduction: In nuclear medicine, targeted radioligand therapy is an established treatment option for metastatic cancer disease. A radioactive isotope is attached to a carrier molecule that will specifically bind to a ... -
Investigating the Impact of Imaging Parameters on Quantification and Interpretation in Brain PET
(2024-06-19)Rationale CortexID software (GE Healthcare) assists in interpreting and assessing FDG and beta-amyloid brain Positron Emission Tomography (PET) images for neurological disorders. It provides Z-scores that indicate abnormal ... -
Compartment model for radon-induced absorbed dose in lungs
(2024-04-23)Inhalation of radon gas and radon daughters has since a long time been reported as the second leading cause of lung cancer after smoking. The biological hazards make it therefore important to quantify the absorbed doses ... -
Evaluating aperture shape controller (ASC) in modulated radiation treatments
(2023-09-28)To decrease aperture complexity, the aperture shape controller (ASC) is a recently introduced function in Eclipse external beam planning (Varian Medical Systems, Palo Alto, USA). ASC works within the photon optimizer, ... -
Anatomical segmentation of the human brain: comparative assessment of two automatic methods
(2023-08-22)Magnetic Resonance Imaging (MRI) is a robust and versatile imaging modality and an integral component of a lot of studies, especially when performing quantitative analysis. MRI is the preferred method of imaging the ... -
Apoptosis induction in breast cancer cells after radiotherapy and potential radiosensitizers
(2023-06-27)Background. Today breast cancer is the foremost cancer death type amongst women around the world. At present some of the toughest challenges in the clinic is recurrent, radioresistant breast cancer, and metastatic breast ... -
Preprocessing for intravoxel incoherent motion analysis in the brain - Signal drift correction
(2023-04-17)Diffusion magnetic resonance imaging (dMRI) is a diagnostic imaging technique that is sensitized to the movement of water molecules in tissues. Intravoxel incoherent motion (IVIM) analysis can be used to estimate blood ... -
Brain morphometry in Parkinson’s disease
(2023-03-02)Abstract Purpose The purpose of this brain morphometry study was to examine the volumes of different regions of the brain by research participants with Parkinson’s disease. Method To carry out the study, MR (magnetic ... -
Monte Carlo evaluation of static and dynamic 6FFF treatments - Evaluation of dose distributions calculated with AAA, Acuros XB, and Collapsed Cone (RayStation and DoseCheck)
(2023-02-23)There are several benefits to removing the standard flattening filter and using so-called flattening filter free (FFF) treatments in external radiation therapy with photons. The main advantage is the possibility of ... -
Uptake and retainment of radionuclides in edible mushrooms – from fruiting to cooking
(2022-12-06)Purpose: The purpose of this study was to study the uptake, distribution and transfer of Mn-54, Zn-65, U-238, U-235, U-234, and Po-210 in mushrooms and their respective caps and stalks, the effects of chelates and ligands, ... -
CHARACTERIZATION AND EVALUATION OF A NIPAM POLYMER GEL MRI DOSIMETER SYSTEM
(2022-11-08)Purpose: The normoxic polymer gel dosimeter based on N-isopropyl acrylamide (NiPAM) is a promising full 3D-dosimeter with high spatial resolution and near tissue equivalency. However, limited work have been done in vestigating ... -
Models for estimating radiation dose and LAR from radioactive fallout: extended dose algorithms for the computational tool LARCalc
(2022-09-09)Today, emergency preparedness is needed against both nuclear reactor accidents and nuclear weapons fallout. Both scenarios can lead to exposure of ionizing radiation. Upon exposure, radionuclides will incur a radiation ... -
Accumulation of 63Ni, 106Ru and 125Sb in phytoplankton
(2022-08-22)Background: Nuclear Power Plants (NPPs) release small amounts of radionuclides which contribute with a low radiation dose to the environment as well as humans and animals. In this context, marine ecosystems are critical, ... -
Evaluation of the DXA radiation environment at Sahlgrenska University Hospital
(2022-05-18)Purpose: The aims of this work were to evaluate the radiation environment in the dual-energy X-ray absorptiometry (DXA) rooms at Sahlgrenska University Hospital, estimate personnel doses, determine legal requirements for ... -
Evaluation of deep learning image reconstruction for brain- and abdominal CT - A visual grading characteristics study
(2022-05-04)Computed tomography (CT) is a common medical imaging method today. There are different ways of reconstructing the images from a CT examination. The standard method is the filtered back projection (FBP). However, a disadvantage ... -
Optimization of MP2RAGE sequence parameters for head and neck T1-mapping and OE-MRI
(2022-05-04)Cancer is the collective name for more than 200 types of diseases that annually causes the death of 8.8 million people, cancer in the head and neck (H&N) accounts for 330.000 of these. It has been shown that hypoxic tumors ...
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