Medizinische Universität Graz - Research portal
Selected Publication:
Groell, R; Rienmueller, R; Schaffler, GJ; Portugaller, HR; Graif, E; Willfurth, P.
CT number variations due to different image acquisition and reconstruction parameters: a thorax phantom study.
Comput Med Imaging Graph. 2000; 24(2):53-58
Doi: 10.1016%2FS0895-6111%2899%2900043-9
Web of Science
PubMed
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- Leading authors Med Uni Graz
- Groell Reinhard
- Co-authors Med Uni Graz
- Portugaller Rupert
- Rienmüller Rainer
- Schaffler Gottfried
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- Abstract:
- A humanoid thorax phantom containing six compartments was scanned with two different computed tomography (CT) scanners using various image acquisition and reconstruction parameters. The differences of CT numbers were statistically significant between the two CT scanners for each compartment (p<0.001) except for the "air" compartment. The variabilities of the CT numbers are described for the different parameters. The mean CT numbers of the "water" compartment, for instance, ranged from 1 to 15HU (Hounsfield Units), those of the "air" compartment varied from -962 to -990HU. Knowledge of these CT number variabilities is necessary when CT numbers are used for tissue characterization.
- Find related publications in this database (using NLM MeSH Indexing)
- Air -
- Algorithms -
- Artifacts -
- Bone and Bones -
- Humans -
- Image Processing, Computer-Assisted - methods
- Lung - methods
- Phantoms, Imaging - methods
- Radiation Dosage - methods
- Radiography, Thoracic - methods
- Signal Processing, Computer-Assisted - methods
- Tomography Scanners, X-Ray Computed - statistics and numerical data
- Tomography, X-Ray Computed - methods
- Water - methods
- Find related publications in this database (Keywords)
- computed tomography
- physics
- spiral
- electron-beam
- attenuation values
- lung