Metal artifact reduction in patients with total hip replacements: evaluation of clinical photon counting CT using virtual monoenergetic images.
Julian SchreckKai Roman LaukampJulius Henning NiehoffArwed Elias MichaelJan BoriesosdickMatthias Michael WöltjenJan Robert KrögerRobert P ReimerJan-Peter GrunzJan BorggrefeSimon LennartzPublished in: European radiology (2023)
• Photon-counting CT-derived virtual monoenergetic images at 110 keV yielded best reduction of hyper- and hypodense artifacts, whereas higher energy levels resulted in artifact overcorrection. • The qualitative artifact extent was reduced best in virtual monoenergetic images at 110 keV, facilitating an improved assessment of the circumjacent bone. • Despite significant artifact reduction, assessment of pelvic organs as well as vessels did not profit from energy levels higher than 70 keV, due to the decline in image contrast.
Keyphrases
- dual energy
- image quality
- deep learning
- computed tomography
- total hip
- convolutional neural network
- contrast enhanced
- optical coherence tomography
- total knee arthroplasty
- magnetic resonance
- living cells
- magnetic resonance imaging
- positron emission tomography
- machine learning
- bone mineral density
- rectal cancer
- monte carlo
- fluorescent probe
- clinical evaluation