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Evaluation of a Motion Correction Algorithm for C-Arm Computed Tomography Acquired During Transarterial Chemoembolization
- Source :
- Cardiovascular and Interventional Radiology
- Publication Year :
- 2020
- Publisher :
- Springer US, 2020.
-
Abstract
- Purpose The aim of this retrospective study was to evaluate the feasibility of a motion correction 3D reconstruction prototype technique for C-arm computed tomography (CACT). Material and Methods We included 65 consecutive CACTs acquired during transarterial chemoembolization of 54 patients (47 m,7f; 67 ± 11.3 years). All original raw datasets (CACTOrg) underwent reconstruction with and without volume punching of high-contrast objects using a 3D image reconstruction software to compensate for motion (CACTMC_bone;CACTMC_no bone). Subsequently, the effect on image quality (IQ) was evaluated using objective (image sharpness metric) and subjective criteria. Subjective criteria were defined by vessel geometry, overall IQ, delineation of tumor feeders, the presence of foreign material-induced artifacts and need for additional imaging, assessed by two independent readers on a 3-(vessel geometry and overall IQ) or 2-point scale, respectively. Friedman rank-sum test and post hoc analysis in form of pairwise Wilcoxon signed-rank test were computed and inter-observer agreement analyzed using kappa test. Results Objective IQ as defined by an image sharpness metric, increased from 273.5 ± 28 (CACTOrg) to 328.5 ± 55.1 (CACTMC_bone) and 331 ± 57.8 (CACTMC_no bone; all p MC_no bone in all categories (e.g., vessel geometry: CACTOrg: κ = 0.51, CACTMC_bone: κ = 0.42, CACTMC_no bone: κ = 0.69). Conclusion The application of a motion correction algorithm was feasible for all data sets and led to an increase in both objective and subjective IQ parameters. Level of Evidence 3
- Subjects :
- Male
Cone beam computed tomography
Carcinoma, Hepatocellular
Wilcoxon signed-rank test
Image quality
Computed Tomography Angiography
Motion (geometry)
Transarterial chemoembolization
030218 nuclear medicine & medical imaging
03 medical and health sciences
0302 clinical medicine
Imaging, Three-Dimensional
Medicine
Humans
Radiology, Nuclear Medicine and imaging
Clinical Investigation
Chemoembolization, Therapeutic
Aged
Retrospective Studies
business.industry
3D reconstruction
Ultrasound
Liver Neoplasms
Angiography
030220 oncology & carcinogenesis
Metric (mathematics)
Motion correction
Female
Cardiology and Cardiovascular Medicine
business
Artifacts
Tomography, X-Ray Computed
Algorithm
Kappa
Algorithms
C-arm computed tomography
Subjects
Details
- Language :
- English
- ISSN :
- 1432086X and 01741551
- Volume :
- 44
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Cardiovascular and Interventional Radiology
- Accession number :
- edsair.doi.dedup.....0c21a19842da527b5e1f6b3a0d621c48