Publications

E. Y. Sidky, E. R. Paul, T. G. Schmidt, X. Pan.“Spectral calibration of photon-counting detectors at high photon flux;” Medical Physics, 49, pp. 6368-6383, (2022). doi:10.1002/mp.15942


T. Lu, J. Jorns, D. Ye, M. Patton, R. Fisher, A. Emmrich, T. G. Schmidt, T. Yen, and B. Yu; “Automated assessment of breast margins in deep ultraviolet fluorescence images using texture analysis” Biomedical Optics Express, 13, pp. 5015-5034, (2022). doi:10.1364/BOE.464547


T. G. Schmidt, B. A. Sammut, R. F. Barber, X. Pan, E. Y. Sidky; “Addressing CT metal artifacts using photon-counting detectors and one-step spectral CT image reconstruction” Medical Physics, 49, pp. 3021-3040, (2022). doi:10.1002/mp.15621


P. Jordan, P. M. Adamson, V. Bhattbhatt, S. Beriwal, S. Shen, O. Radermecker, S. Bose, L. S. Strain, M. Offe, D. Fraley, S. Principi, D. H. Ye, A. S. Wang, J. van Heteren, N. J. Vo, and T. G. Schmidt; “Pediatric chest-abdomen-pelvis and abdomen-pelvis CT images with expert organ contours” Medical Physics, 49, pp. 3523-3528 , (2022). doi:10.1002/mp.15485


S. Principi, S. O'Connor, L. Frank, and T. G. Schmidt “Reduced Chest Computed Tomography Scan Length for Patients Positive for Coronavirus Disease 2019: Dose Reduction and Impact on Diagnostic Utility,” Journal of Computer Assisted Tomography, 46 (4), pp. 576-583 , (2022). doi:10.1097/RCT.0000000000001312


P. M. Adamson, V. Bhattbhatt, S. Principi, S. Beriwal, L. S. Strain, M. Offe, A. S. Wang, N. J. Vo, T. G. Schmidt; “Technical note: Evaluation of a V-Net autosegmentation algorithm for pediatric CT scans: Performance, generalizability, and application to patient-specific CT dosimetry,” Medical Physics, 49, pp. 2342-2354 , (2022). doi:10.1002/mp.15521


S. Principi, Y. Lu, Y. Liu, A. S. Wang, A. Maslowski, T. Wareing, J. Van Heteren, T. G. Schmidt; “Validation of a deterministic linear Boltzmann transport equation solver for rapid CT dose computation using physical dose measurements in pediatric phantoms” Medical Physics, 48 (12), pp. 8075-8088 , (2021). doi:10.1002/mp.15301


A. E. Salmon, R. F. Cooper, M. Chen, B. Higgins, J. A. Cava, N. Chen, H. M. Follett, M. Gaffney, H. Heitkotter, E. Heffernan, T. G. Schmidt, and J. Carroll; “Automated image processing pipeline for adaptive optics scanning light ophthalmoscopy” Biomedical Optics Express, 12, pp. 3142 -3168 , (2021). doi:10.1364/BOE.418079


F. Rupcich, D. Crotty, J. Fan, P. Khobragade, and T. G. Schmidt, inventors; General Electric, assignee; “CT imaging system and method using a task-based image quality metric to acheive a desired image quality,” "United States Patent US 10,973,489, April 13, 2021.


P. B. P. Jenkins, T. G. Schmidt, “Experimental study of photon-counting CT neural network material decomposition under conditions of pulse pileup,” Journal of Medical Imaging, 8 (1), pp.013502, (2021). doi:10.1117/1.JMI.8.1.013502


S. Principi, A. S. Wang, A. Maslowski, T. Wareing, P. Jordan, T. G. Schmidt, “Deterministic linear Boltzmann transport equation solver for patient-specific CT dose estimation: Comparison against a Monte Carlo benchmark for realistic scanner configurations and patient models,” Medical Physics, 47(12) pp. 6470-6483, (2020). doi:10.1002/mp.14494.


T. Lu, J. M. Jorns, M. Patton, R. Fisher, A. Emmrich, T. Doehring, T. G. Schmidt, D. H. Ye, T. Yen, B. Yu, “Rapid assessment of breast tumor margins using deep ultraviolet fluorescence scanning microscopy,” J. Biomed. Opt, 25(12) 126501, (2020). doi:10.1117/1.JBO.25.12.126501. Featured Cover Article


J. A. Kraker, B. S. Omoba, J. A. Cava, T. G. Schmidt, T. Y. Chui, R. B. Rosen, J. E. Kim, J. Carroll, R. E. Linderman, “Assessing the Influence of OCT-A Device and Scan Size on Retinal Vascular Metrics,” Trans. Vis. Sci. Tech., 9(11) pp. 7, (2020). doi:10.1167/tvst.9.11.7.


K.R. Zimmerman, T. G. Schmidt, “Experimental investigation of neural network estimator and transfer learning techniques for K-edge spectral CT imaging,” Medical Physics, 47 (2), pp. 541-551, (2020). doi:10.1002/mp.13946


D. Schott, T. G. Schmidt, W. Hall, P. Knechtges, G. Noid, S. Klawikowski, B. Erickson, X. A. Li, “Estimation of changing gross tumor volume from longitudinal CTs during radiation therapy delivery based on a texture analysis with classifier algorithms: a proof-of-concept study,”Quant Imaging Med Surg 2019, (2019). doi:10.21037/qims.2019.06.24


A. S. Wang, A. Maslowski, T. Wareing, J. Star-Lack, T. G. Schmidt, “A fast, linear Boltzmann transport equation solver for computed tomography dose calculation (Acuros CTD),” Medical Physics, 46 (2), pp. 925-933, (2019). doi:10.1002/mp.13305 Editor's Pick designation


T. G. Schmidt, R. E. Linderman, M. R. Strampe, T. Y. P. Chui, R. B. Rosen, J. Carroll, “The Utility of Frame Averaging for Automated Algorithms in Analyzing Retinal Vascular Biomarkers in AngioVue OCTA,” Trans. Vis. Sci. Tech., 8 (1):10, (2019). doi: 10.1167/tvst.8.1.10


P. Khobragade, F. Rupcich, J. Fan, D. J. Crotty, T. G. Schmidt, “CT automated exposure control using a generalized detectability index,” Medical Physics, 46 (1), pp. 140-151, (2019). doi:10.1002/mp.13286


W. Ha, E. Y. Sidky, R. F. Barber, T. G. Schmidt, X. Pan “Estimating the spectrum in computed tomography via Kullback-Leibler divergence constrained optimization,” Medical Physics, 46 (1), pp. 81-92, (2019). doi:10.1002/mp.13257 Editor's Pick designation


H. Ma, E. Gros, S. G. Baginski, Z. R. Laste, N. M. Kulkarni, D. Okerlund, T. G. Schmidt, “Automated quantification and evaluation of motion artifact on coronary CT angiography images,” Medical Physics, 45 (12), pp. 5494-5508, (2018). doi:10.1002/mp.13243


G. Noid, D. Schott, N. Mistry, Y. Liu, T. G. Schmidt, J. R. Robbins, X. A. Li, “Technical Note: Enhancing soft tissue contrast and radiation-induced image changes with dual-energy CT for radiation therapy,” Medical Physics, 45 (9), pp. 4238-4245, (2018). doi:10.1002/mp.13083


P. Khobragade, J. Fan, F. Rupcich, D. J. Crotty, T. G. Schmidt, “ Application of fractal dimension for quantifying noise texture in computed tomography images,” Medical Physics, 45 (8), pp. 3563-3573, (2018). doi:10.1002/mp.13040


H. Ma, E. Gros, S. G. Baginski, Z. R. Laste, N. M. Kulkarni, D. Okerlund, T. G. Schmidt, “ Evaluation of motion artifact metrics for coronary CT angiography,” Medical Physics, 45 (2), pp. 687-702, (2018). doi:10.1002/mp.12720


T. G. and K. R. Zimmerman, inventors; Marquette University, assignee; “Material decomposition of multi-spectral x-ray projections using neural networks,” "United States Patent US 9,808,216, November 7, 2017.


T. G. Schmidt, R. F. Barber, E. Y. Sidky, “A Spectral CT Method to Directly Estimate Basis Material Maps From Experimental Photon-Counting Data,” IEEE Transactions on Medical Imaging, 36 (9), pp. 1808-1819, (2017). 10.1109/TMI.2017.2696338


D. R. Okerlund, S. Dutta, B. E. Nett, D. Pazzani, D. Stassi and T. G. Schmidt, inventors; General Electric Co, assignee; “Systems and methods for coronary imaging,” "United States Patent US 9,629,587, April 25, 2017.


J. A. Cross, B. D. McHenry, R. Molthen, E. Exten, T. G. Schmidt, G. F. Harris, “Biplane fluoroscopy for hindfoot motion analysis during gait: A model-based evaluation,” Medical Engineering & Physics, 43 (5), pp. 118-123, (2017). DOI:10.1016/j.medengphy.2017.02.009


T. G. Schmidt, A. S. Wang, B. Haas, T. Coradi, J. Star-Lack, “Accuracy of patient-specific organ dose estimates obtained using an automated image segmentation algorithm,” Journal of Medical Imaging, 3 (4), pp. 043502 (2016). DOI:10.1117/1.JMI.3.4.043502


R. F. Barber, E. Y. Sidky, T. G. Schmidt, X. Pan, “An algorithm for constrained one-step inversion of spectral CT data,” Physics in Medicine and Biology, 61 (10), pp. 3784-3818 (2016). DOI:10.1088/0031-9155/61/10/3784


D. Stassi, S. Dutta, H. Ma, A. Soderman, D. Pazzani, E. Gros, D. Okerlund, T. G. Schmidt, “Automated selection of the optimal cardiac phase for single-beat coronary CT angiography reconstruction,” Medical Physics, 43, (1), pp. 324-335 (2016). DOI:10.1118/1.4938265


J. A. Cross, B. McHenry, T. G. Schmidt, “Quantifying cross-scatter contamination in biplane fluoroscopy motion analysis systems,” Journal of Medical Imaging, 2 (4), pp. 043503, (2015). DOI:10.1117/1.JMI.2.4.043503


D. Gandhi, D. J. Crotty, G. M. Stevens, T. G. Schmidt, “Technical Note: Phantom study to evaluate the dose and image quality effects of a computed tomography organ-based tube current modulation technique,” Medical Physics, 42 (11), pp. 6572–6578, (2015). DOI:10.1118/1.4933197


K. C. Zimmerman and T. G. Schmidt, “Experimental comparison of empirical material decomposition methods for spectral CT,” Physics in Medicine and Biology, 60 (8), pp. 3175–3191, (2015). DOI:10.1088/0031-9155/60/8/3175


T. G. Schmidt, K. C. Zimmerman, E. Y. Sidky, “The effects of extending the spectral information acquired by a photon-counting detector for spectral CT,” Physics in Medicine and Biology, 60 (4), pp. 1583–1600, (2015). DOI:10.1088/0031-9155/60/4/1583 Featured Article designation


M. E. Hoppe, D. Gandhi, G. M. Stevens, W. D. Foley, T. G. Schmidt, “The effects of gantry tilt on breast dose and image noise in cardiac CT,” Medical Physics, 40, pp. 121905:1–8, (2013). DOI:10.1118/1.4829521. Editor's Pick designation


P. A. Wolf, J. S. Jorgensen, T. G. Schmidt, E. Y. Sidky, “Few-view single photon emission computed tomography (SPECT) reconstruction based on a blurred piecewise constant object model,” Physics in Medicine and Biology, 58 (16), pp. 5629–5652, (2013).


F. Rupcich, A. Badal, L. M. Popescu, I Kyprianou, T. G. Schmidt, “Reducing the radiation dose to the female breast during CT coronary angiography: A simulation study comparing breast shielding, angular tube current modulation, reduced kV, and partial angle protocols using an unknown-location signal detectability metric,” Medical Physics, 40 (8), pp. 081921, (2013).


D. Ma, P. A. Wolf, A. V. Clough, T. G. Schmidt, “The Performance of MLEM for Dynamic Imaging From Simulated Few-View, Multi-Pinhole SPECT,” IEEE Tran.Nuc. Sci., 60 (1),pp. 115–123, (2013).


F. Rupcich, A. Badal, I. Kyprianou, T. G. Schmidt, “A database for estimating organ dose for coronary angiography and brain perfusion CT scans for arbitrary spectra and angular tube current modulation,” Medical Physics, 39 (9), pp. 5336–5346, (2012).


M. E. Hoppe, T. G. Schmidt, “Estimation of organ and effective dose due to Compton backscatter security scans,” Medical Physics, 39 (6), pp. 3396–3403, (2012).


B. Kalinosky, J. M. Sabol, B. Heckel, K. Piacsek, T. G. Schmidt, “Quantifying the tibiofemoral joint space using x-ray tomosynthesis,” Medical Physics, 38 (12), pp. 6672–6682, (2011).


T. G. Schmidt, F. Pektas, “Region-of-interest material decomposition from truncated energy-resolved CT,” Medical Physics, 38 (10), pp. 5657–5666, (2011).


T. G. Schmidt, “What is inverse-geometry CT?” Journal of Cardiovascular Computed Tomography, 5 (3), pp. 145–148, (2011).


T. G. Schmidt, “Breast CT: Current Status and New Directions,” Current Medical Imaging Reviews, 6 (2), pp. 61–71, (2010).


T. G. Schmidt, “CT energy weighting in the presence of scatter and limited energy resolution,” Medical Physics, 37 (3), pp. 1056–1067, (2010).


T. G. Schmidt, “Optimal image-based weighting for energy-resolved CT,” Medical Physics, 36 (6), pp. 3018–3027, (2009).


R. A. Bhagtani, T. G. Schmidt, “Simulated scatter performance of an inverse-geometry dedicated breast CT system,” Medical Physics, 36 (3), pp. 788–796, (2009).


T. G. Schmidt, N. R. Bennett, S. R. Mazin, J. Star-Lack, E. G. Solomon, R. Fahrig, N. J. Pelc, “A prototype table-top inverse-geometry volumetric CT system,” Medical Physics, 33 (6), pp. 1867–1878, (2006).


T. G. Schmidt, R. Fahrig, N. J. Pelc, “A three-dimensional reconstruction algorithm for an inverse-geometry volumetric CT system,” Medical Physics, 32 (11) , pp. 3234–3245, (2005).


T. G. Schmidt, R. Fahrig, E. G. Solomon, N. J. Pelc, “An inverse-geometry volumetric CT system with a large-area scanned source: A feasibility study,” Medical Physics, 31 (9), pp. 2623–2627, (2004).