Liu Lab

About the lab

PI: Bob Liu

The Liu lab is committed to optimization and safety of x-ray imaging.

Research

The Liu lab focuses on

  • Radiation dosimetry and protocol optimization in Computed Tomography 
  • Patient dose monitoring and tracking in Interventional Radiology
  • System evaluation and optimization in breast imaging
  • Shielding design of x-ray imaging facilities

Members

Faculty


Fellows


    Students


      Research Assistants


        Selected Publications

        • Yang K, Li X, Yu L, Li B, Marschall TA, Liu B. Visualization and comparison of CT dose distribution between axial and helical acquisitions. Med Phys 2023 50 (8):4797-4808
        • Li X, Hirsch JA, Rehani MM, Yang K, Marschall TA, Liu B. Patient follow-up for possible radiation injury from fluoroscopically-guided interventions: Need to consider high cumulative exposure from multiple procedures. Phys Med 2023 106 ():102521
        • Yang K, Cao J, Pisuchpen N, Kambadakone A, Gupta R, Marschall T, Li X, Liu B. CT image quality evaluation in the age of deep learning: trade-off between functionality and fidelity. Eur Radiol 2023 33 (4):2439-2449
        • Yang K, Abbey CK, Chou SS, Dontchos BN, Li X, Lehman CD, Liu B. Power Spectrum Analysis of Breast Parenchyma with Digital Breast Tomosynthesis Images in a Longitudinal Screening Cohort from Two Vendors. Acad Radiol 2022 29 (6):841-850
        • Li X, Marschall TA, Yang K, Liu B. Calculation of scan length and size-specific dose at longitudinal positions of body CT scans using dose equilibrium function. Med Phys 2023 50 (2):1096-1104
        • Li X, Hirsch JA, Rehani MM, Yang K, Marschall TA, Liu B. Radiation exposure in 101 non-coronary fluoroscopically guided interventional procedures: reference levels of air kerma at the reference point and air kerma area product. Br J Radiol 2022 95 (1130):20211108
        • Yang K, Geng C, Li X, Liu B. Quantitative evaluation of transmission properties of breast tissue equivalent materials under Compton scatter imaging setup. Phys Med 2020 72 ():32-38
        • Rehani MM, Yang K, Melick ER, Heil J, Šalát D, Sensakovic WF, Liu B. Patients undergoing recurrent CT scans: assessing the magnitude. Eur Radiol 2020 30 (4):1828-1836
        • Li X, Hirsch JA, Rehani MM, Yang K, Liu B. Effective Dose Assessment for Patients Undergoing Contemporary Fluoroscopically Guided Interventional Procedures. AJR Am J Roentgenol 2020 214 (1):158-170
        • Li X, Hirsch JA, Rehani MM, Ganguli S, Yang K, Liu B. Radiation Effective Dose Above 100 mSv From Fluoroscopically Guided Intervention: Frequency and Patient Medical Condition. AJR Am J Roentgenol. 2020 08; 215(2):433-440. PMID: 32507015.
        •  Peng Z, Fang X, Yan P, Shan H, Liu T, Pei X, Wang G, Liu B, Kalra MK, Xu XG. A method of rapid quantification of patient-specific organ doses for CT using deep-learning-based multi-organ segmentation and GPU-accelerated Monte Carlo dose computing. Med Phys. 2020 Jun; 47(6):2526-2536. PMID: 32155670.
        •  Yang K, Geng C, Li X, Liu B. Quantitative evaluation of transmission properties of breast tissue equivalent materials under Compton scatter imaging setup. Phys Med. 2020 Apr; 72:32-38. PMID: 32197220.
        • Rehani MM, Yang K, Melick ER, Heil J, Šalát D, Sensakovic WF, Liu B. Patients undergoing recurrent CT scans: assessing the magnitude. Eur Radiol. 2020 Apr; 30(4):1828-1836. PMID: 31792585.
        •  Li X, Hirsch JA, Rehani MM, Yang K, Liu B. Effective Dose Assessment for Patients Undergoing Contemporary Fluoroscopically Guided Interventional Procedures. AJR Am J Roentgenol. 2020 01; 214(1):158-170. PMID: 31670595.
        •  Yang K, Li Z, Li X, Liu B. Characterization of dynamic collimation mechanisms for helical CT scans with direct measurements. Phys Med Biol. 2019 10 23; 64(21):215006. PMID: 31461411.
        • Yang K, Ruan C, Li X, Liu B. Data of CT bow tie filter profiles from three modern CT scanners. Data Brief. 2019 Aug; 25:104261. PMID: 31463343.
        •  Li X, Yang K, Liu B. Exam-level dose monitoring in CT: Quality metric consideration for multiple series acquisitions. Med Phys. 2019 Apr; 46(4):1575-1580. PMID: 30723934.
        • Liu B, Hirsch JA, Li X, Sheridan RM, Rehani MM, Zheng H, Rabinov JD. Radiation Dose Monitoring for Fluoroscopically Guided Interventional Procedures: Effect on Patient Radiation Exposure. Radiology. 2019 03; 290(3):744-749. PMID: 30644807.
        • McCarthy CJ, Kilcoyne A, Li X, Cahalane AM, Liu B, Arellano RS, Uppot RN, Gee MS. Radiation Dose and Risk Estimates of CT-Guided Percutaneous Liver Ablations and Factors Associated with Dose Reduction. Cardiovasc Intervent Radiol. 2018 Dec; 41(12):1935-1942. PMID: 30132100.
        • Yang K, Ganguli S, DeLorenzo MC, Zheng H, Li X, Liu B. Procedure-specific CT Dose and Utilization Factors for CT-guided Interventional Procedures. Radiology. 2018 10; 289(1):150-157. PMID: 30015583.
        •  Li X, Yang K, Liu B. Radiation dose dependence on subject size in abdominal computed tomography: Water phantom and patient model comparison. Med Phys. 2018 May; 45(5):2309-2317. PMID: 29582439.
        •  DeLorenzo MC, Yang K, Li X, Liu B. Comprehensive evaluation of broad-beam transmission of patient supports from three fluoroscopy-guided interventional systems. Med Phys. 2018 Apr; 45(4):1425-1432. PMID: 29431862.
        •  Fuchs G, Chretien YR, Mario J, Do S, Eikermann M, Liu B, Yang K, Fintelmann FJ. Quantifying the effect of slice thickness, intravenous contrast and tube current on muscle segmentation: Implications for body composition analysis. Eur Radiol. 2018 Jun; 28(6):2455-2463. PMID: 29318425.
        • Bär E, Lalonde A, Zhang R, Jee KW, Yang K, Sharp G, Liu B, Royle G, Bouchard H, Lu HM. Experimental validation of two dual-energy CT methods for proton therapy using heterogeneous tissue samples. Med Phys. 2018 Jan; 45(1):48-59. PMID: 29134674.
        •  with considerations of both patient size and variable tube current. Med Phys. 2017 Oct; 44(10):5413-5422. PMID: 28681439.
        • BioPhyRadRad Ali Khawaja RD, Singh S, Padole A, Otrakji A, Lira D, Zhang D, Liu B, Primak A, Xu G, Kalra MK. Point Organ Radiation Dose in Abdominal CT: Effect of Patient Off-Centering in an Experimental Human Cadaver Study. Radiat Prot Dosimetry. 2017 Aug 01; 175(4):440-449. PMID: 28074019.
        •  Meganck JA, Liu B. Dosimetry in Micro-computed Tomography: a Review of the Measurement Methods, Impacts, and Characterization of the Quantum GX Imaging System. Mol Imaging Biol. 2017 08; 19(4):499-511. PMID: 27957647.
        •  short scan length. Br J Radiol. 2017 Jun; 90(1074):20160931. PMID: 28402125.
        •  Yang K, Schultz TJ, Li X, Liu B. Radiation shielding calculation for digital breast tomosynthesis rooms with an updated workload survey. J Radiol Prot. 2017 Mar 20; 37(1):230-246. PMID: 28141582.
        •  Yang K, Li X, George Xu X, Liu B. Direct and fast measurement of CT beam filter profiles with simultaneous geometrical calibration. Med Phys. 2017 Jan; 44(1):57-70. PMID: 28102951.
        •  Li X, Yang K, Liu B. A study of the midpoint dose to CTDIvol ratio: Implications for CT dose evaluation. Med Phys. 2016 Nov; 43(11):5878. PMID: 27806599.

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