Wadih Karim
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View article: Model observer task‐based assessment of computed tomography metal artifact reduction using a hip arthroplasty phantom
Model observer task‐based assessment of computed tomography metal artifact reduction using a hip arthroplasty phantom Open
Background The United States Food and Drug Administration (FDA) recently published a model observer‐based framework for the objective performance assessment of computed tomography (CT) metal artifact reduction (MAR) algorithms and demonstr…
View article: Visceral adipose tissue volume effect in Crohn's disease using reduced exposure CT enterography
Visceral adipose tissue volume effect in Crohn's disease using reduced exposure CT enterography Open
Purpose The purpose of this investigation was to assess the effect of visceral adipose tissue volume (VA) on reader efficacy in diagnosing and characterizing small bowel Crohn's disease using lower exposure CT enterography (CTE). Secondari…
View article: Dual energy CT based scoring in chronic thromboembolic pulmonary hypertension and correlation with clinical and hemodynamic parameters: a retrospective cross-sectional study
Dual energy CT based scoring in chronic thromboembolic pulmonary hypertension and correlation with clinical and hemodynamic parameters: a retrospective cross-sectional study Open
DECT based scoring in CTEPH is feasible and correlates positively with sPAP, mPAP and PVR. Combined score has the highest magnitude of correlation.
View article: Effect of obesity on ability to lower exposure for detection of low‐attenuation liver lesions
Effect of obesity on ability to lower exposure for detection of low‐attenuation liver lesions Open
Purpose The purpose of this study was to assess the effect of obesity and iterative reconstruction on the ability to reduce exposure by studying the accuracy for detection of low‐contrast low‐attenuation (LCLA) liver lesions on computed to…
View article: Comparative assessment of qualitative and quantitative perfusion with dual-energy CT and planar and SPECT-CT V/Q scanning in patients with chronic thromboembolic pulmonary hypertension
Comparative assessment of qualitative and quantitative perfusion with dual-energy CT and planar and SPECT-CT V/Q scanning in patients with chronic thromboembolic pulmonary hypertension Open
Inter-observer agreement in subjective grading of PBV maps is excellent. However, inter-modality agreement between DECT and SPECT-CT is modest. Automated quantification values of PBV maps correlate poorly with established tools like planar…