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Establishment of a deep learning algorithm for dosimetry of radiopharmaceuticals
(2022-01-13)
Purpose: The aim of this study was to introduce a volumetric convolutional neural network for
segmentation of the kidneys in SPECT images and to apply it in the dosimetry of
radiopharmaceuticals of this organ, in order ...
Measuring natural hemispheric asymmetry in the brain: quantifying the Yakovlevian torque phenomenon
(2022-01-13)
Background:
Just by a cursory examination, the two hemispheres of the human
brain may appear as mirror images of one another. Yet, the left and
right sides exhibit profound differences in anatomy. One of the most
obvious ...
Evaluation of whole-body bone scans performed using a gamma camera with Cadmium Zinc Telluride detector
(2022-01-13)
The bone scan is a common nuclear medicine imaging procedure that is mainly used for
evaluating several oncological patient groups. A radioactive tracer, 99mTc -labelled
diphosphonate, is injected intravenously and ...
STANDARDIZED ORGAN AT RISK VOLUME FOR EXTERNAL BEAM RADIATION THERAPY IN PROSTATE CANCER AND ITS RELATIONSHIP TO VOLUMES DEFINED BY CLINICAL PRACTICE
(2022-01-13)
Background/
Purpose:
In radiation therapy (RT), the radiation dose calculated in tumours and normal tissue
depends on how the volumes are defined. It is difficult to standardize how tumour
volumes should be defined ...
ATLAS-BASED SEGMENTATION OF ULTRAHIGH-RESOLUTION STRUCTURAL MR HEAD IMAGES ACQUIRED AT 7 TESLA
(2022-01-13)
Purpose: The purpose of this work was to find out how the existing brain atlases and
segmentation algorithms perform when applied to ultrahigh-resolution MR brain
images, acquired with a 7-Tesla scanner. Also to make ...
ESTIMATION OF RADIATION EXPOSURE FROM NATURALLY OCCURRING RADIONUCLIDES IN FOOD AND FOODSTUFF
(2022-01-13)
Purpose: The main purpose of this study was to provide an estimation of the committed
effective dose received by the Swedish population from naturally occurring
radionuclides (NORM) in the diet. This study was also ...
osimetric impact of system spe cific geometric distortion on head and neck treatment plans in MRI only based radiation therapy
(2022-01-13)
Background/
purpose:
Because of the superior soft tissue contrast, in comparison with
computed tomography (CT) data, magnetic resonance imaging
(MRI) is of high interest to include in a larger extent in the ra diation ...
Evaluation of the iterative kilovoltage cone-beam computed tomography reconstruction method for the Varian TrueBeam system
(2022-03-18)
Introduction:
Radiotherapy is used to treat patients with various types of cancer, where linear accelerators produce the radiation beam used for the treatment. Before each treatment fraction, the patient needs to be ...
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 ...