T. Douglas Mast

T. Douglas Mast

Professor, College of Engineering and Applied Sciences, Department of Biomedical Engineering

Cardiovascular Rsrch Cntr

3938

CEAS - Biomedical Eng - 0586

3938 Cardiovascular Center
231 Albert Sabin Way
Cincinnati, Ohio 45267

Research and Practice Interests

I have been active in biomedical ultrasound research since 1993, and currently lead the UC Biomedical Acoustics Laboratory, investigating applications of ultrasound in thermal ablation, as well as other therapeutic and diagnostic applications. My research experience and expertise includes ultrasound image guidance for thermal ablation, passive cavitation detection and imaging, ultrasound-mediated drug delivery, therapeutic ultrasound for treatment of cancer, simulation of ultrasound propagation in inhomogeneous tissue, modeling of bio-heat transfer in thermal therapy, image analysis to map mechanical displacement and strain in soft tissues, tissue characterization, inverse scattering, modeling and analysis of radiation from ultrasound transducers, and design of minimally-invasive medical devices.

Research Support

Grant: #2-2006 Investigators:Mast, T. Douglas 07-14-2006 -05-31-2008 American Institute of Ultrasound in Medicine Quantitative Real-Time Monitoring of Thermal Ablation by Pulse-Echo Ultrasound Imaging Role:PI $10,000.00 Closed Level:Private Non-Profit

Grant: #R43 CA124238 Investigators:Mast, T. Douglas 09-26-2006 -08-31-2009 National Cancer Institute Integrated Image-Guided Ultrasound Ablation System for Liver Cancer Management Role:PI $120,850.00 Closed Level:Federal

Grant: #R21 EB008483 Investigators:Holland, Christy; Mast, T. Douglas; Rao, Marepalli; Rudich, Steven 02-01-2009 -01-31-2013 National Institute of Biomedical Imaging and Bioengineering Passive Cavitation Imaging for Guidance and Control of Ultrasound Ablation Role:PI $387,043.00 Closed Level:Federal

Grant: #R01 NS047603 Investigators:Holland, Christy; Mast, T. Douglas; Shaw, George; Wagner, Kenneth 02-15-2009 -01-31-2014 National Institute of Neurological Disorders and Stroke Ultrasound-Assisted Thrombolysis for Stroke Therapy Role:Collaborator $2,324,085.00 Active Level:Federal

Grant: #F32 HL104916 Investigators:Haworth, Kevin; Holland, Christy; Mast, T. Douglas 09-01-2010 -08-31-2012 National Heart, Lung and Blood Institute Passive Cavitation Image-Guided Ultrasound-Mediated Drug Delivery for Atheroma Therapy Role:Collaborator $102,974.00 Closed Level:Federal

Grant: #R01CA158439 Investigators:Mast, T. Douglas; Rao, Marepalli; Rudich, Steven 08-10-2012 -05-31-2016 National Cancer Institute Real-Time Prediction of Thermal Ablation-Induced Cell Death by Echo Decorrelation Imaging Role:PI $774,440.00 Active Level:Federal

Grant: #R01CA158439 Investigators:Ahmad, Syed; Chadalavada, Seetharam; Choe, K. Ann; Mast, T. Douglas; Rao, Marepalli; Ristagno, Ross; Shah, Shimul; Wang, Jiang 06-01-2018 -05-31-2023 National Cancer Institute Monitoring and control of human liver cancer ablation using real-time, 3D echo decorrelation imaging Role:PI $437,316.00 Awarded Level:Federal

Grant: #Passive Acoustic Imaging for Absolute Radiotherapy Dosimetry Investigators:Mast, T. Douglas 07-01-2018 -12-31-2019 UC's Research Support Passive Acoustic Imaging for Absolute Radiotherapy Dosimetry Role:PI $25,000.00 Active Level:Internal UC

Grant: #R01 DC017301 Investigators:Boyce, Suzanne; Hamilton, Sarah; Mast, T. Douglas; Riley, Michael; Seward, Renee; Silbert, Noah 08-10-2018 -07-31-2023 National Institute on Deafness and Other Communication Disor Simplified Ultrasound Biofeedback for Speech Remediation Role:Collaborator $509,304.00 Active Level:Federal

Publications

Peer Reviewed Publications

Mast, T Douglas (2010. )Convolutional modeling of diffraction effects in pulse-echo ultrasound imaging.The Journal of the Acoustical Society of America, ,128 (3 ),EL99-104

Salgaonkar, Vasant A; Datta, Saurabh; Holland, Christy K; Mast, T Douglas (2009. )Passive cavitation imaging with ultrasound arrays.The Journal of the Acoustical Society of America, ,126 (6 ),3071-83

Mast, T Douglas; Pucke, Daniel P; Subramanian, Swetha E; Bowlus, William J; Rudich, Steven M; Buell, Joseph F (2008. )Ultrasound monitoring of in vitro radio frequency ablation by echo decorrelation imaging. Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, ,27 (12 ),1685-97

Ammi, Azzdine Y; Mast, T Douglas; Huang, I-Hua; Abruzzo, Todd A; Coussios, Constantin-C; Shaw, George J; Holland, Christy K (2008. )Characterization of ultrasound propagation through ex-vivo human temporal bone.Ultrasound in medicine & biology, ,34 (10 ),1578-89

Mast, T Douglas; Salgaonkar, Vasant A; Karunakaran, Chandrapriya; Besse, John A; Datta, Saurabh; Holland, Christy K (2008. )Acoustic emissions during 3.1 MHz ultrasound bulk ablation in vitro.Ultrasound in medicine & biology, ,34 (9 ),1434-48

Datta, Saurabh; Coussios, Constantin-C; Ammi, Azzdine Y; Mast, T Douglas; de Courten-Myers, Gabrielle M; Holland, Christy K (2008. )Ultrasound-enhanced thrombolysis using Definity as a cavitation nucleation agent.Ultrasound in medicine & biology, ,34 (9 ),1421-33

Nahirnyak, Volodymyr; Mast, T Douglas; Holland, Christy K (2007. )Ultrasound-induced thermal elevation in clotted blood and cranial bone.Ultrasound in medicine & biology, ,33 (8 ),1285-95

Mast, T Douglas (2007. )Fresnel approximations for acoustic fields of rectangularly symmetric sources.The Journal of the Acoustical Society of America, ,121 (6 ),3311-22

Makin, Inder Raj S; Mast, T Douglas; Faidi, Waseem; Runk, Megan M; Barthe, Peter G; Slayton, Michael H (2005. )Miniaturized ultrasound arrays for interstitial ablation and imaging.Ultrasound in medicine & biology, ,31 (11 ),1539-50

Mast, T Douglas; Makin, Inder Raj S; Faidi, Waseem; Runk, Megan M; Barthe, Peter G; Slayton, Michael H (2005. )Bulk ablation of soft tissue with intense ultrasound: modeling and experiments. The Journal of the Acoustical Society of America, ,118 (4 ),2715-24

Tabei, Makoto; Mast, T Douglas; Waag, Robert C (2003. )Simulation of ultrasonic focus aberration and correction through human tissue. The Journal of the Acoustical Society of America, ,113 (2 ),1166-76

Mast, T Douglas (2002. )Aberration correction for time-domain ultrasound diffraction tomography. The Journal of the Acoustical Society of America, ,112 (1 ),55-64

Jansson, Tomas; Jurkonis, Rytis; Mast, T Douglas; Persson, Hans W; Lindström, Kjell (2002. )Frequency dependence of speckle in continuous-wave ultrasound with implications for blood perfusion measurements. IEEE transactions on ultrasonics, ferroelectrics, and frequency control, ,49 (6 ),715-25

Tabei, Makoto; Mast, T Douglas; Waag, Robert C (2002. )A k-space method for coupled first-order acoustic propagation equations. The Journal of the Acoustical Society of America, ,111 (1 Pt 1 ),53-63

Haworth, Kevin J; Bader, Kenneth B; Rich, Kyle T; Holland, Christy K; Mast, T Douglas (2017. )Quantitative Frequency-Domain Passive Cavitation Imaging.IEEE transactions on ultrasonics, ferroelectrics, and frequency control, ,64 (1 ),177-191

Fosnight, Tyler R; Hooi, Fong Ming; Keil, Ryan D; Ross, Alexander P; Subramanian, Swetha; Akinyi, Teckla G; Killin, Jakob K; Barthe, Peter G; Rudich, Steven M; Ahmad, Syed A; Rao, Marepalli B; Mast, T Douglas (2017. )Echo Decorrelation Imaging of Rabbit Liver and VX2 Tumor during In Vivo Ultrasound Ablation.Ultrasound in medicine & biology, ,43 (1 ),176-186

Haworth, Kevin J; Bader, Kenneth B; Rich, Kyle Thomas; Holland, Christy K; Mast, T Douglas (2016. )Quantitative Frequency-Domain Passive Cavitation Imaging.IEEE transactions on ultrasonics, ferroelectrics, and frequency control, ,

Subramanian, Swetha; Schmidt, Daniel T; Rao, Marepalli B; Mast, T Douglas (2016. )Dependence of ultrasound echo decorrelation on local tissue temperature during ex vivo radiofrequency ablation.Physics in medicine and biology, ,61 (6 ),2356-71

Rich, Kyle T; Mast, T Douglas (2015. )Accuracy of a bistatic scattering substitution technique for calibration of focused receivers.The Journal of the Acoustical Society of America, ,138 (5 ),EL469-73

Subramanian, Swetha; Mast, T Douglas (2015. )Optimization of tissue physical parameters for accurate temperature estimation from finite-element simulation of radiofrequency ablation.Physics in medicine and biology, ,60 (19 ),N345-55

Rich, Kyle T; Mast, T Douglas (2015. )Methods to calibrate the absolute receive sensitivity of single-element, focused transducers.The Journal of the Acoustical Society of America, ,138 (3 ),EL193-8

Haworth, Kevin J; Salgaonkar, Vasant A; Corregan, Nicholas M; Holland, Christy K; Mast, T Douglas (2015. )Using passive cavitation images to classify high-intensity focused ultrasound lesions.Ultrasound in medicine & biology, ,41 (9 ),2420-34

Rich, Kyle T; Hoerig, Cameron L; Rao, Marepalli B; Mast, T Douglas (2014. )Relations between acoustic cavitation and skin resistance during intermediate- and high-frequency sonophoresis.Journal of controlled release : official journal of the Controlled Release Society, ,194 ,266-77

Hoerig, Cameron L; Serrone, Joseph C; Burgess, Mark T; Zuccarello, Mario; Mast, T Douglas (2014. )Prediction and suppression of HIFU-induced vessel rupture using passive cavitation detection in an ex vivo model.Journal of therapeutic ultrasound, ,2 ,14

Nagle, Anna S; Barker, Matthew A; Kleeman, Steven D; Haridas, Balakrishna; Mast, T Douglas (2014. )Passive biomechanical properties of human cadaveric levator ani muscle at low strains.Journal of biomechanics, ,47 (2 ),583-6

Subramanian, Swetha; Rudich, Steven M; Alqadah, Amel; Karunakaran, Chandra Priya; Rao, Marepalli B; Mast, T Douglas (2014. )In vivo thermal ablation monitoring using ultrasound echo decorrelation imaging.Ultrasound in medicine & biology, ,40 (1 ),102-14

Haworth, Kevin J; Mast, T Douglas; Radhakrishnan, Kirthi; Burgess, Mark T; Kopechek, Jonathan A; Huang, Shao-Ling; McPherson, David D; Holland, Christy K (2012. )Passive imaging with pulsed ultrasound insonations.The Journal of the Acoustical Society of America, ,132 (1 ),544-53

Mast, T Douglas; Barthe, Peter G; Makin, Inder Raj S; Slayton, Michael H; Karunakaran, Chandra Priya; Burgess, Mark T; Alqadah, Amel; Rudich, Steven M (2011. )Treatment of rabbit liver cancer in vivo using miniaturized image-ablate ultrasound arrays.Ultrasound in medicine & biology, ,37 (10 ),1609-21

Holland C.; Mast T.; Rao M.; Rich K. (12-01-2018. )Characterization of cavitation-radiated acoustic power using diffraction correction.Journal of the Acoustical Society of America, ,144 (6 ),3563-3574

Abbass M.; Garbo A.; Killin J.; Mahalingam N.; Mast T. (06-14-2018. )Optimized echo decorrelation imaging feedback for bulk ultrasound ablation control.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, ,65 (10 ),1743-1755

Abbass M.; Barthe P.; Hooi F.; Killin J.; Mahalingam N.; Mast T. (01-01-2018. )Real-Time Spatiotemporal Control of High-Intensity Focused Ultrasound Thermal Ablation Using Echo De.Ultrasound in Medicine and Biology, ,44 (1 ),199-213

Abbass M.; Cox M.; Garbo A.; Mast T. (10-31-2017. )Focused ultrasound ablation using electronically scanned grating lobes with real-time echo decorrela.IEEE International Ultrasonics Symposium, IUS, ,

Abbass M.; Garbo A.; Killin J.; Mahalingam N.; Mast T. (10-31-2017. )Real-time control of bulk ultrasound thermal ablation using echo decorrelation imaging feedback.IEEE International Ultrasonics Symposium, IUS, ,

Abbass M.; Garbo A.; Killin J.; Mahalingam N.; Mast T. (10-31-2017. )Real-time control of bulk ultrasound thermal ablation using echo decorrelation imaging feedback.IEEE International Ultrasonics Symposium, IUS, ,

Abbass M.; Cox M.; Garbo A.; Krothapalli K.; Mahalingam N.; Mast T. (10-31-2017. )Focused ultrasound ablation using electronically scanned grating lobes with real-time echo decorrela.IEEE International Ultrasonics Symposium, IUS, ,

Barthe P.; Colbert S.; Fosnight T.; Hooi F.; Keil R.; Mast T. (03-17-2017. )Echo decorrelation imaging of ex vivo HIFU and bulk ultrasound ablation using image-treat arrays.AIP Conference Proceedings, ,1821 ,

Douglas Mast T.; Hooi F.; Nagle A.; Subramanian S. (01-01-2015. )Analysis of tissue changes, measurement system effects, and motion artifacts in echo decorrelation i.Journal of the Acoustical Society of America, ,137 (2 ),585-597

Burgess M.; Hoerig C.; Mast T.; Serrone J.; Zuccarello M. (09-08-2014. )Prediction and suppression of HIFU-induced vessel rupture using passive cavitation detection in an e.Journal of Therapeutic Ultrasound, ,2 (1 ),

Ahmad S.; Barthe P.; Fosnight T.; Hooi F.; Keil R.; Mast T.; Rao M.; Ren X.; Subramanian S.; Wang Y. (01-01-2014. )Motion-corrected echo decorrelation imaging of in vivo focused and bulk ultrasound ablation in a rab.IEEE International Ultrasonics Symposium, IUS, ,2161-2164

Corregan N.; Haworth K.; Holland C.; Mast T.; Salgaonkar V. (06-19-2013. )Spatial specificity and sensitivity of passive cavitation imaging for monitoring high-intensity focu.Proceedings of Meetings on Acoustics, ,19 ,

Heath D.; Makin I.; Mast T.; Pedapati C. (03-01-2013. )Demonstration of bilateral peripheral blood flow response to physical provocation tests including os.International Journal of Osteopathic Medicine, ,16 (1 ),

Fosnight T.; Mast T.; Rao M.; Schmidt D.; Subramanian S. (01-01-2013. )TU?E?144?02: Dependence of Ultrasound Echo Decorrelation On Tissue Temperature During Radiofrequency.Medical Physics, ,40 (6 ),451

Hoerig C.; Mast T.; Rich K. (12-01-2012. )Cavitation mechanisms in ultrasound-enhanced permeability of ex vivo porcine skin.Proceedings of Meetings on Acoustics, ,18 ,

Burgess M.; Hoerig C.; Mast T.; Serrone J.; Zuccarello M. (12-01-2012. )Acoustic emissions associated with ultrasound-induced rupture of ex vivo blood vessels.Proceedings of Meetings on Acoustics, ,18 ,

Alqadah A.; Karunakaran C.; Mast T.; Rudich S.; Subramanian S. (12-01-2012. )In vivo thermal ablation monitoring by echo decorrelation imaging.AIP Conference Proceedings, ,1481 ,374-380

Alqadah A.; Burgess M.; Karunakaran C.; Mast T.; Narmoneva D.; Rudich S. (12-01-2012. )Histologic analysis of rabbit liver cancer treated by bulk ultrasound ablation.AIP Conference Proceedings, ,1481 ,162-168

Burgess M.; Douglas Mast T.; Kocaeli H.; Serrone J.; Zuccarello M. (02-01-2012. )The potential applications of high-intensity focused ultrasound (HIFU) in vascular neurosurgery.Journal of Clinical Neuroscience, ,19 (2 ),214-221

Douglas Mast T.; Haworth K.; Holland C.; Huang S.; Klegerman M.; Kopechek J.; McPherson D.; Perrin S.; Porter T.; Raymond J. (11-01-2011. )Acoustic characterization of echogenic liposomes: Frequency-dependent attenuation and backscatter.Journal of the Acoustical Society of America, ,130 (5 ),3472-3481

Mast T.; Subramanian S. (12-01-2010. )Analytic and numerical modeling of ultrasonic B-scan and echo decorrelation imaging.Proceedings of Meetings on Acoustics, ,9 ,

Alqadah A.; Barthe P.; Buell J.; Burgess M.; Karunakaran C.; Makin I.; Mast T.; Rudich S.; Slayton M. (12-01-2009. )In vivo treatment of rabbit VX2 tumor by miniaturized image-ablate ultrasound arrays.Proceedings - IEEE Ultrasonics Symposium, ,

Burgess M.; Holland C.; Karunakaran C.; Mast T. (07-21-2009. )Role of cavitation in bulk ultrasound ablation: A histologic study.AIP Conference Proceedings, ,1113 ,43-47

Besse J.; Datta S.; Holland C.; Karunakaran C.; Mast T.; Salgaonkar V. (09-24-2007. )Measurements of cavitation dose, echogenicity, and temperature during ultrasound ablation.AIP Conference Proceedings, ,911 ,335-341

Besse J.; Datta S.; Heinlein G.; Holland C.; Karunakaran C.; Mast T.; Salgaonkar V. (08-31-2007. )Image-guided Ex vivo liver ablation by unfocused ultrasound using passive cavitation detection.Progress in Biomedical Optics and Imaging - Proceedings of SPIE, ,6440 ,

Faidi W.; Makin I.; Mast T. (12-01-2006. )Acoustic field modeling in therapeutic ultrasound.AIP Conference Proceedings, ,838 ,209-216

Faidi W.; Makin I.; Mast T. (05-08-2006. )Acoustic propagation effects in therapeutic ultrasound.AIP Conference Proceedings, ,829 ,3-7

Al-Bataineh O.; Keolian R.; Mast T.; Park E.; Smith N.; Sparrow V. (03-01-2006. )Utilization of the k-space method in the design of a ferroelectric hyperthermia phased array.Ferroelectrics, ,331 ,103-120

Mast T.; Yu F. (12-01-2005. )Simplified expansions for radiation from a baffled circular piston.Journal of the Acoustical Society of America, ,118 (6 ),3457-3464

Barthe P.; Faidi W.; Makin I.; Mast T.; Runk M.; Slayton M. (03-28-2005. )Conformal bulk ablation and therapy monitoring using intracorporeal image-Treat Ultrasound Arrays.AIP Conference Proceedings, ,754 ,27-29

Barthe P.; Faidi W.; Makin I.; Mast T.; Runk M.; Slayton M. (12-01-2004. )B-scan imaging and thermal lesion monitoring using miniaturized dual-functionality ultrasound arrays.Proceedings - IEEE Ultrasonics Symposium, ,3 ,1788-1791

Barthe P.; Faidi W.; Gallagher L.; Jaeger P.; Makin I.; Mast T.; Runk M.; Slayton M. (12-01-2004. )Ultrasound therapy system and ablation results utilizing miniature imaging/therapy arrays.Proceedings - IEEE Ultrasonics Symposium, ,3 ,1792-1795

Mast T. (12-20-2001. )Two- and three-dimensional simulations of ultrasonic propagation through human breast tissue.Acoustic Research Letters Online, ,3 ,53-58

Gordon G.; Mast T. (03-01-2001. )Quantitative flaw reconstruction from ultrasonic surface wavefields measured by electronic speckle p.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, ,48 (2 ),432-444

Donald Liu D.; Mast T.; Nachman A.; Souriau L.; Tabei M.; Waag R. (03-01-2001. )A k-space method for large-scale models of wave propagation in tissue.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, ,48 (2 ),341-354

Mast T. (11-16-2000. )Empirical relationships between acoustic parameters in human soft tissues.Acoustic Research Letters Online, ,1 ,37-42

Mast T. (12-29-1999. )Wideband quantitative ultrasonic imaging by time-domain diffraction tomography.Journal of the Acoustical Society of America, ,106 (6 ),3061-3071

Hinkelman L.; Mast T.; Metlay L.; Orr M.; Waag R. (12-29-1999. )Simulation of ultrasonic pulse propagation, distortion, and attenuation in the human chest wall.Journal of the Acoustical Society of America, ,106 (6 ),3665-3677

Lin F.; Mast T.; Waag R. (12-01-1999. )Time-domain ultrasound diffraction tomography .Proceedings of the IEEE Ultrasonics Symposium, ,2 ,1617-1620

Carcione L.; Mast T.; Mould J.; Tabei M.; Waag R.; Wojcik G. (12-01-1999. )Validation of FFT-based algorithms for large-scale modeling of wave propagation in tissue .Proceedings of the IEEE Ultrasonics Symposium, ,2 ,1551-1556

Gordon G.; Mast T. (01-01-1999. )Wide-area imaging of ultrasonic Lamb wave fields by electronic speckle pattern interferometry .Proceedings of SPIE - The International Society for Optical Engineering, ,3586 ,297-309

Douglas Mast T.; Hinkelman L.; Orr M.; Waag R. (12-01-1998. )The effect of abdominal wall morphology on ultrasonic pulse distortion. Part II. Simulations.Journal of the Acoustical Society of America, ,104 (6 ),3651-3664

Douglas Mast T.; Hinkelman L.; Metlay L.; Waag R. (12-01-1998. )The effect of abdominal wall morphology on ultrasonic pulse distortion. Part I. Measurements.Journal of the Acoustical Society of America, ,104 (6 ),3635-3649

Jansson T.; Mast T.; Waag R. (06-01-1998. )Measurements of differential scattering cross section using a ring transducer.Journal of the Acoustical Society of America, ,103 (6 ),3169-3179

Hinkelman L.; Mast T.; Orr M.; Sparrow V.; Waag R. (01-01-1998. )Erratum: Simulation of ultrasonic pulse propagation through the abdominal wall (Journal of the Acous.Journal of the Acoustical Society of America, ,104 (2 I ),1124

Hinkelman L.; Mast T.; Orr M.; Waag R. (12-01-1997. )Effects of abdominal wall morphology on ultrasonic pulse distortion .Proceedings of the IEEE Ultrasonics Symposium, ,2 ,1493-1496

Liu D.; Mast T.; Nachman A.; Waag R. (12-01-1997. )Quantitative imaging with eigenfunctions of the scattering operator .Proceedings of the IEEE Ultrasonics Symposium, ,2 ,1507-1510

Mast T.; Nachman A.; Waag R. (08-01-1997. )Focusing and imaging using eigenfunctions of the scattering operator.Journal of the Acoustical Society of America, ,102 (2 pt 1 ),715-725

Hinkelman L.; Mast T.; Orr M.; Sparrow V.; Waag R. (08-01-1997. )Simulation of ultrasonic pulse propagation through the abdominal wall.Journal of the Acoustical Society of America, ,102 (2 ),1177-1190

Mast T.; Pierce A. (01-01-1995. )A theory of aneurysm sounds.Journal of Biomechanics, ,28 (9 ),1045-1053

Douglas Mast T.; Pierce A. (01-01-1995. )Describing-function theory for flow excitation of resonators.Journal of the Acoustical Society of America, ,97 (1 ),163-172

Mast T.; Waag R. (01-01-1995. )Wave space resolution in ultrasonic scattering measurements.Journal of the Acoustical Society of America, ,98 (6 ),3050-3058

Mast T.; Pierce A. (12-01-1991. )Flow-induced sounds associated with aneurysms .American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA, ,11 ,129-134

Contact Information

Academic - 3938 Cardiovascular Center
231 Albert Sabin Way
Cincinnati  Ohio, 45267
Phone: 513-558-5609
doug.mast@uc.edu