| 1. |
- Jönsson, Håkan, et al.
(författare)
-
Matkulturer på Arbetsplatserna
- 2005
-
Ingår i: Mat, hälsa och oregelbundna arbetstider. - Lund : Department of Sociology, Lund University. - 9172671874 ; Research report in Sociology 2005:1, s. 43-59, s. 43-59
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 2. |
- Jönsson, Håkan, et al.
(författare)
-
Svensk Mjölk
- 2005
-
Ingår i: Mat Genealogi och gestaltning. - 9144045549 ; , s. 71-84
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
- Hansson, Jonny, et al.
(författare)
-
An optimisation strategy in a digital environment applied to neonatal chest imaging.
- 2005
-
Ingår i: Radiation protection dosimetry. - : Oxford University Press (OUP). - 0144-8420 .- 1742-3406. ; 114:1-3, s. 278-85
-
Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to find the optimum tube voltage for neonatal chest imaging in computed radiography. The study was designed to take full advantage of the benefits of digital imaging, for example, by comparing the tube voltages at constant effective dose. A phantom study using a living rabbit was first conducted. Images were collected at tube voltages ranging from 40 to 90 kV(p). The reproduction of four structures (central vessels, peripheral vessels, carina and thoracic vertebrae) was rated by 10 radiologists. The reproduction of both central and peripheral vessels was relatively independent of tube voltage. The carina was better reproduced at higher tube voltages whereas the opposite was true for the thoracic vertebrae. Based on the higher importance of the reproduction of the carina it was decided that 90 kV(p) was the optimal tube voltage. To validate the result from the phantom study, a follow-up study was conducted in which images of neonates collected at the tube voltage regularly used at Sahlgrenska University Hospital (70 kV(p)) were compared with images collected at the tube voltage proposed by the phantom study. The follow-up study confirmed the results from the phantom study that the reproduction of the carina was better at 90 than at 70 kV(p). In conclusion, for neonatal chest imaging-given the same effective dose-90 kVp gives better reproduction of important structures than the regularly used 70 kV(p).
|
|
| 6. |
|
|
| 7. |
|
|
| 8. |
- Neveryd, Håkan, et al.
(författare)
-
Creating a university for everyone
- 1996
-
Ingår i: Proceedings of the 5th International Conference on Computers for Handicapped Persons (ICCHP). ; , s. 325-328
-
Konferensbidrag (refereegranskat)
|
|
| 9. |
- Afrasiabi, Roodabeh, et al.
(författare)
-
Integration of a droplet-based microfluidic system and silicon nanoribbon FET sensor
- 2016
-
Ingår i: Micromachines. - : MDPI AG. - 2072-666X. ; 7:8
-
Tidskriftsartikel (refereegranskat)abstract
- We present a novel microfluidic system that integrates droplet microfluidics with a silicon nanoribbon field-effect transistor (SiNR FET), and utilize this integrated system to sense differences in pH. The device allows for selective droplet transfer to a continuous water phase, actuated by dielectrophoresis, and subsequent detection of the pH level in the retrieved droplets by SiNR FETs on an electrical sensor chip. The integrated microfluidic system demonstrates a label-free detection method for droplet microfluidics, presenting an alternative to optical fluorescence detection. In this work, we were able to differentiate between droplet trains of one pH-unit difference. The pH-based detection method in our integrated system has the potential to be utilized in the detection of biochemical reactions that induce a pH-shift in the droplets.
|
|
| 10. |
- Ahmad, Nouman, et al.
(författare)
-
Voxel-wise body composition analysis using image registration of a three-slice CT imaging protocol : methodology and proof-of-concept studies
- 2024
-
Ingår i: Biomedical engineering online. - : Springer Nature. - 1475-925X. ; 23:1
-
Tidskriftsartikel (refereegranskat)abstract
- Background Computed tomography (CT) is an imaging modality commonly used for studies of internal body structures and very useful for detailed studies of body composition. The aim of this study was to develop and evaluate a fully automatic image registration framework for inter-subject CT slice registration. The aim was also to use the results, in a set of proof-of-concept studies, for voxel-wise statistical body composition analysis (Imiomics) of correlations between imaging and non-imaging data.Methods The current study utilized three single-slice CT images of the liver, abdomen, and thigh from two large cohort studies, SCAPIS and IGT. The image registration method developed and evaluated used both CT images together with image-derived tissue and organ segmentation masks. To evaluate the performance of the registration method, a set of baseline 3-single-slice CT images (from 2780 subjects including 8285 slices) from the SCAPIS and IGT cohorts were registered. Vector magnitude and intensity magnitude error indicating inverse consistency were used for evaluation. Image registration results were further used for voxel-wise analysis of associations between the CT images (as represented by tissue volume from Hounsfield unit and Jacobian determinant) and various explicit measurements of various tissues, fat depots, and organs collected in both cohort studies.Results Our findings demonstrated that the key organs and anatomical structures were registered appropriately. The evaluation parameters of inverse consistency, such as vector magnitude and intensity magnitude error, were on average less than 3 mm and 50 Hounsfield units. The registration followed by Imiomics analysis enabled the examination of associations between various explicit measurements (liver, spleen, abdominal muscle, visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), thigh SAT, intermuscular adipose tissue (IMAT), and thigh muscle) and the voxel-wise image information.Conclusion The developed and evaluated framework allows accurate image registrations of the collected three single-slice CT images and enables detailed voxel-wise studies of associations between body composition and associated diseases and risk factors.
|
|
