S
Sonal Ambwani
Researcher at GE Healthcare
Publications - 4
Citations - 190
Sonal Ambwani is an academic researcher from GE Healthcare. The author has contributed to research in topics: Correction for attenuation & PET-CT. The author has an hindex of 3, co-authored 4 publications receiving 171 citations.
Papers
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Journal ArticleDOI
Comparison of 4-class and continuous fat/water methods for whole-body, MR-based PET attenuation correction
Scott David Wollenweber,Sonal Ambwani,Albert Henry Roger Lonn,Dattesh Dayanand Shanbhag,Sheshadri Thiruvenkadam,Sandeep Kaushik,Rakesh Mullick,Florian Wiesinger,Hua Qian,Gaspar Delso +9 more
TL;DR: It is demonstrated that both 4class and continuousFat/water AC methods provided adequate quantitation in the body, and that the continuous fat/water method was within 5.7% on average for SUV mean in liver and 1.6% onaverage for SUV max for FDG-avid features.
Journal ArticleDOI
Evaluation of an atlas-based PET head attenuation correction using PET/CT & MR patient data
Scott David Wollenweber,Sonal Ambwani,Gaspar Delso,Albert Henry Roger Lonn,Rakesh Mullick,Florian Wiesinger,Z. Piti,A. Tari,G. Novak,M. Fidrich +9 more
TL;DR: PET image visualization demonstrated spatial variations in activity concentration accuracy induced by the AC methods that were consistent with the approximations in each method, demonstrating that the atlas-based AC in the head provides adequate PET quantitation and image quality as compared to methods that do not account for bone.
Proceedings ArticleDOI
Truncation completion of MR-based PET attenuation maps using time-of-flight non-attenuation-corrected PET images
TL;DR: A procedure for truncation completion of MR-bases PET attenuation maps using body contours generated from TOF-NAC PET images, thereby leading to more accurate truncation completed in the MR-derived attenuation map.
Proceedings ArticleDOI
Evaluation of MR acquisition strategies for MR based attenuation correction
Sonal Ambwani,Scott David Wollenweber,Sandeep Kaushik,Florian Wiesinger,Dattesh Dayanand Shanbhag,Gustav K. von Schulthess,Patrick Veit-Haibach,Gaspar Delso +7 more
TL;DR: A PET/CT-MR tri-modality setup is used to evaluate the advantages and limitations of local and body coil MR data acquisition for the generation of PET attenuation maps by means of fully automatic image processing.