Kingshuk Roy Choudhury

Conference Journal of Lung, Pulmonary & Respiratory Research · December 30, 2020 Rationale: Recent advances in perfluoropropane magnetic resonance imaging of the lung have provided the means to assess pulmonary ventilation and gas distribution throughout the pulmonary airways and acini in a non-invasive manner. Objectives: The ... Full text Cite

Notice of Removal: Translation of fetal short-lag spatial coherence (SLSC) imaging into clinical practice: A pilot study

Conference IEEE International Ultrasonics Symposium Ius · October 31, 2017 Fetal short-lag spatial coherence (SLSC) imaging has demonstrated 64-85% increases in CNR and 17-29% increases in contrast relative to conventional B-mode imaging. However, despite its proven technical efficacy, the viability of fetal SLSC in the clinical ... Full text Cite

Accuracy and variability of texture-based radiomics features of lung lesions across CT imaging conditions

Conference Progress in Biomedical Optics and Imaging Proceedings of SPIE · January 1, 2017 Texture analysis for lung lesions is sensitive to changing imaging conditions but these effects are not well understood, in part, due to a lack of ground-truth phantoms with realistic textures. The purpose of this study was to explore the accuracy and vari ... Full text Cite

Development of local complexity metrics to quantify the effect of anatomical noise on detectability of lung nodules in chest CT imaging

Conference Progress in Biomedical Optics and Imaging Proceedings of SPIE · January 1, 2017 The purpose of this study was to develop metrics of local anatomical complexity and compare them with detectability of lung nodules in CT. Data were drawn retrospectively from a published perception experiment in which detectability was assessed in cases e ... Full text Cite

A cautionary note on the use of positivity constrained reconstructions for quantification of regional PET imaging data

Conference IEEE Nuclear Science Symposium Conference Record · January 1, 2013 Positively constrained maximum likelihood (ML) reconstructions in PET eliminate the negative values associated with unconstrained least squares (LS) - more commonly known as filtered back-projection (FBP). This is desirable for certain qualitative imaging ... Full text Cite

WE‐A‐217A‐02: The Impact of Fluorodeoxyglucose Positron Emission Tomography (FDG‐PET) Variability on the Assessment of Treatment Response in Head‐And‐Neck Cancer Patients Undergoing Chemoradiotherapy

Conference Medical Physics · January 1, 2012 Purpose: To compare intrinsic, temporal variability of tumor glucose metabolism versus early treatment‐induced change. This assessment is necessary to use changes in imaging parameters during therapy to properly segregate metabolic responders from non‐resp ... Full text Cite