Essays about: "CNR"

Showing result 1 - 5 of 21 essays containing the word CNR.

1. 1. Development of Advanced X-ray Micro-Tomography Helical Scan andTomographic Data Processing

   University essay from Högskolan i Gävle/Avdelningen för elektroteknik, matematik och naturvetenskap

   Author : Yoseph Abraham; [2023]
   Keywords : ;

   Abstract : Micro-computed tomography (Micro-CT) is an imaging technique that allows for high-resolution,three-dimensional (3D) internal visualization of small objects in a non-destructive manner. However,a significant limitation arises when attempting to image elongated samples at higher resolutions andmagnifications due to the inherently small field of view (FOV). READ MORE

3. 2. 3D printer in dosimetry and mammography – designing and testing an OSL dosemeter holder and a low contrast-detail phantom

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Måns Boll; [2022]
   Keywords : Medicine and Health Sciences;

   Abstract : Introduction: Today, 3D printing is a versatile tool used in a wide range of fields. With the advent of more cost-effective fused deposition modelling (FDM) 3D printing technologies it is time to investi- gate what such a 3D printer has to offer in radiation science applications. READ MORE

4. 3. Implementation and verification of a quantitative MRI method for creating and evaluating synthetic MR images

   University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

   Author : Aleksander Blagoiev; [2020]
   Keywords : MRI; Quantitative MRI; Synthetic MRI;

   Abstract : The purpose of this thesis was to implement and quantitatively test a quantitative MRI (qMRI) method, from which synthetic MR images are created and also evaluated. The parameter maps of T1, T2*, and effective proton density (PD*) were tested with reference tubes containing different relaxation times, and concentrations of water (H2O) and heavy water (D2O). READ MORE

5. 4. Liver contrast-enhancement on Computed tomography : a question of to be or not to be in the right phase

   University essay from Uppsala universitet/Institutionen för kirurgiska vetenskaper

   Author : Jennifer Andersson; [2020]
   Keywords : Computed tomography; contrast media; liver; contrast enhancement; datortomografi; kontrastmedel; lever; kontrastuppladdning;

   Abstract : Background: Computed tomography (CT), is commonly used imaging technique in cancer patients. In CT performed for tumour staging to detect the spread of tumours, the liver is a common place for metastases. READ MORE

6. 5. Development of a Tool for Imaging the Pumping-Out Behavior of Poly- Vinyl Alcohol Shelled Microbubbles

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Stina Hägglund; [2020]
   Keywords : Microbubbles; Pumping-out behavior; Verasonics; Ultrasound; Ultrafast imaging;

   Abstract : For many years, microbubbles have been used as ultrasound contrast agents to improve the quality of diagnostics, seeing that they produce more backscattering ultrasound than blood does. Novel types of microbubbles and increased knowledge about their different behaviors have led to other suggested areas of use. READ MORE