James T Dobbins

Summary

Affiliation: Duke University Medical Center
Country: USA

Publications

  1. ncbi request reprint Chest radiography: optimization of X-ray spectrum for cesium iodide-amorphous silicon flat-panel detector
    James T Dobbins
    Department of Radiology, Duke University Medical Center, 161F Bryan Research Bldg, Research Drive, DUMC Box 3302, Durham, NC 27710, USA
    Radiology 226:221-30. 2003
  2. pmc Detector or system? Extending the concept of detective quantum efficiency to characterize the performance of digital radiographic imaging systems
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University and Medical Center, 2424 Erwin Rd, Suite 302, Durham, NC 27705, USA
    Radiology 249:926-37. 2008
  3. ncbi request reprint A framework for optimising the radiographic technique in digital X-ray imaging
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Duke University Medical Center, Duke University, Durham, NC 27710, USA
    Radiat Prot Dosimetry 114:220-9. 2005
  4. doi request reprint Digital tomosynthesis of the chest
    James T Dobbins
    Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
    J Thorac Imaging 23:86-92. 2008
  5. ncbi request reprint Importance of point-by-point back projection correction for isocentric motion in digital breast tomosynthesis: relevance to morphology of structures such as microcalcifications
    Ying Chen
    Department of Biomedical Engineering, Duke Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27710, USA
    Med Phys 34:3885-92. 2007
  6. ncbi request reprint Comparative scatter and dose performance of slot-scan and full-field digital chest radiography systems
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, DUMC 3302, Durham, NC 27710, USA
    Radiology 235:940-9. 2005
  7. ncbi request reprint Digital x-ray tomosynthesis: current state of the art and clinical potential
    James T Dobbins
    Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
    Phys Med Biol 48:R65-106. 2003
  8. pmc The effect of averaging adjacent planes for artifact reduction in matrix inversion tomosynthesis
    Devon J Godfrey
    Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27705, USA
    Med Phys 40:021907. 2013
  9. pmc Generation of a suite of 3D computer-generated breast phantoms from a limited set of human subject data
    Christina M L Hsu
    Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, USA
    Med Phys 40:043703. 2013
  10. pmc Biplane correlation imaging: a feasibility study based on phantom and human data
    Ehsan Samei
    Carl E Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University, Durham, NC 27710, USA
    J Digit Imaging 25:137-47. 2012

Detail Information

Publications28

  1. ncbi request reprint Chest radiography: optimization of X-ray spectrum for cesium iodide-amorphous silicon flat-panel detector
    James T Dobbins
    Department of Radiology, Duke University Medical Center, 161F Bryan Research Bldg, Research Drive, DUMC Box 3302, Durham, NC 27710, USA
    Radiology 226:221-30. 2003
    ..To ascertain the optimum x-ray spectrum for chest radiography with a cesium iodide-amorphous silicon flat-panel detector...
  2. pmc Detector or system? Extending the concept of detective quantum efficiency to characterize the performance of digital radiographic imaging systems
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University and Medical Center, 2424 Erwin Rd, Suite 302, Durham, NC 27705, USA
    Radiology 249:926-37. 2008
    ..To develop an experimental method for measuring the effective detective quantum efficiency (eDQE) of digital radiographic imaging systems and evaluate its use in select imaging systems...
  3. ncbi request reprint A framework for optimising the radiographic technique in digital X-ray imaging
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Duke University Medical Center, Duke University, Durham, NC 27710, USA
    Radiat Prot Dosimetry 114:220-9. 2005
    ..The general findings highlight the fact that the techniques that are conventionally assumed to be optimum may need to be revisited for digital radiography...
  4. doi request reprint Digital tomosynthesis of the chest
    James T Dobbins
    Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
    J Thorac Imaging 23:86-92. 2008
    ..Possible implementation strategies for use in chest imaging are discussed...
  5. ncbi request reprint Importance of point-by-point back projection correction for isocentric motion in digital breast tomosynthesis: relevance to morphology of structures such as microcalcifications
    Ying Chen
    Department of Biomedical Engineering, Duke Advanced Imaging Laboratories, Duke University, Durham, North Carolina 27710, USA
    Med Phys 34:3885-92. 2007
    ..With wide angles or for imaging of larger breasts, this point-by-point BP rather than the traditional SAA should also be considered as the basis of further deblurring algorithms that work in conjunction with the BP method...
  6. ncbi request reprint Comparative scatter and dose performance of slot-scan and full-field digital chest radiography systems
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, DUMC 3302, Durham, NC 27710, USA
    Radiology 235:940-9. 2005
    ..To evaluate the scatter, dose, and effective detective quantum efficiency (DQE) performance of a slot-scan digital chest radiography system compared with that of a full-field digital radiography system...
  7. ncbi request reprint Digital x-ray tomosynthesis: current state of the art and clinical potential
    James T Dobbins
    Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
    Phys Med Biol 48:R65-106. 2003
    ..Approaches for optimizing the tomosynthesis image are given. Applications of tomosynthesis to various clinical tasks, including angiography, chest imaging, mammography, dental imaging and orthopaedic imaging, are also described...
  8. pmc The effect of averaging adjacent planes for artifact reduction in matrix inversion tomosynthesis
    Devon J Godfrey
    Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27705, USA
    Med Phys 40:021907. 2013
    ..This paper examines the use of MITS slabs, created by averaging several adjacent MITS planes, as a method for suppressing partial-pixel artifacts...
  9. pmc Generation of a suite of 3D computer-generated breast phantoms from a limited set of human subject data
    Christina M L Hsu
    Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, USA
    Med Phys 40:043703. 2013
    ..The authors conducted a preliminary subjective assessment with a limited number of observers (n = 4) to illustrate how realistic the simulated images generated with the pseudoindependent phantoms appeared...
  10. pmc Biplane correlation imaging: a feasibility study based on phantom and human data
    Ehsan Samei
    Carl E Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University, Durham, NC 27710, USA
    J Digit Imaging 25:137-47. 2012
    ..The findings suggest that the BCI technique has the potential for clinical implementation as a cost-effective technique to improve the detection of subtle lung nodules with lowered rate of false-positives...
  11. ncbi request reprint Intercomparison of methods for image quality characterization. II. Noise power spectrum
    James T Dobbins
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University, Durham, North Carolina 27710, USA
    Med Phys 33:1466-75. 2006
    ..1% relative difference in NPS averaged over frequency, for each factor considered separately). Overall, the three methods agreed to within 1.6% +/- 0.8% when averaged over frequencies > 0.15 mm(-1)...
  12. pmc Effective DQE (eDQE) and speed of digital radiographic systems: an experimental methodology
    Ehsan Samei
    Department of Radiology, Carl E Ravin Advanced Imaging Laboratories, Medical Physics Graduate Program, Duke University and Medical Center, 2424 Erwin Road, Suite 302, Durham, North Carolina 27705, USA
    Med Phys 36:3806-17. 2009
    ....
  13. pmc Assessment of detective quantum efficiency: intercomparison of a recently introduced international standard with prior methods
    Nicole T Ranger
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University and Medical Center, 2424 Erwin Rd, Suite 302, Durham, NC 27705, USA
    Radiology 243:785-95. 2007
    ..To prospectively evaluate the recently introduced international standard method for measurement of the detective quantum efficiency (DQE) of digital radiography systems, in comparison with representative prior methods...
  14. pmc Methodology for generating a 3D computerized breast phantom from empirical data
    Christina M Li
    Department of Radiology and Biomedical Engineering, Carl E Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705, USA
    Med Phys 36:3122-31. 2009
    ..A realistic and geometrically defined breast phantom that can accurately simulate imaging data may have many applications in breast imaging research...
  15. ncbi request reprint Multiprojection correlation imaging for improved detection of pulmonary nodules
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, 2424 Erwin Rd, Suite 302, Durham, NC 27705, USA
    AJR Am J Roentgenol 188:1239-45. 2007
    ....
  16. ncbi request reprint Measurement of the detective quantum efficiency in digital detectors consistent with the IEC 62220-1 standard: practical considerations regarding the choice of filter material
    Nicole T Ranger
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University, Durham, North Carolina 27710, USA
    Med Phys 32:2305-11. 2005
    ....
  17. pmc Chest tomosynthesis: technical principles and clinical update
    James T Dobbins
    Carl E Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, NC 27705, USA
    Eur J Radiol 72:244-51. 2009
    ..Possible implementation strategies for use in clinical chest imaging are discussed...
  18. pmc An analysis of the mechanical parameters used for finite element compression of a high-resolution 3D breast phantom
    Christina M L Hsu
    Department of Biomedical Engineering, Duke University, Durham, NC, USA
    Med Phys 38:5756-70. 2011
    ..This approach may prove beneficial for multimodality breast imaging research, since it provides a high level of anatomical detail throughout the simulation study...
  19. ncbi request reprint Optimization of the matrix inversion tomosynthesis (MITS) impulse response and modulation transfer function characteristics for chest imaging
    Devon J Godfrey
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University, DUMC 3302, Durham, North Carolina 27710, USA
    Med Phys 33:655-67. 2006
    ..MITS chest data from human subjects demonstrates that the selected imaging strategy can effectively produce high-quality MITS thoracic images in vivo...
  20. ncbi request reprint Intercomparison of methods for image quality characterization. I. Modulation transfer function
    Ehsan Samei
    Duke Advanced Imaging Laboratories, Department of Radiology, Duke University, Durham, North Carolina 27710, USA
    Med Phys 33:1454-65. 2006
    ..Careful attention to influencing factors is warranted to achieve accurate results...
  21. doi request reprint Effective dose efficiency: an application-specific metric of quality and dose for digital radiography
    Ehsan Samei
    Carl E Ravin Advanced Imaging Laboratories, Duke University, Durham, NC 27710, USA
    Phys Med Biol 56:5099-118. 2011
    ..Demonstrated for chest radiography, the eDE shows promise as an application-specific metric of imaging performance, reflective of body habitus and radiographic technique, with utility for radiography protocol assessment and optimization...
  22. doi request reprint Plate-specific gain map correction for the improvement of detective quantum efficiency in computed radiography
    Erich A Schnell
    Department of Radiology, Duke University Medical Center, NC 27705, USA
    Med Phys 39:1495-504. 2012
    ..The lack of gain-map correction has limited the DQE(f) at higher exposures with CR. This current work describes a feasible solution to generating plate-specific gain maps...
  23. ncbi request reprint Fundamental imaging characteristics of a slot-scan digital chest radiographic system
    Ehsan Samei
    Digital Imaging Research Division, Department of Radiology, Duke University, DUMC 3302, Durham, North Carolina 27710, USA
    Med Phys 31:2687-98. 2004
    ..43 in the mediastinum. The findings indicated that the slot-scan design provides marked scatter reduction leading to high effective DQE (DQEeff) of the system and reduced patient dose required to achieve high image quality...
  24. pmc Tomosynthesis imaging: at a translational crossroads
    James T Dobbins
    Carl E Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705, USA
    Med Phys 36:1956-67. 2009
    ..This overview article provides a forward-looking assessment of the translational questions facing tomosynthesis imaging and anticipates some of the likely research and clinical activities in the next five years...
  25. ncbi request reprint Quantitative evaluation of noise reduction strategies in dual-energy imaging
    Richard J Warp
    Department of Biomedical Engineering, Duke University, Durham, North Carolina 27710, USA
    Med Phys 30:190-8. 2003
    ..Noise reduction strategies in dual-energy imaging can be effective and should focus on blending various algorithms depending on anatomical locations...
  26. doi request reprint Frequency response and distortion properties of nonlinear image processing algorithms and the importance of imaging context
    Jered R Wells
    Carl E Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705, USA
    Med Phys 40:091906. 2013
    ..The authors have developed a methodology to analyze the amplitude modulation and waveform distortion properties of nonlinear systems with specific application to medical image processing algorithms...
  27. doi request reprint An image-based technique to assess the perceptual quality of clinical chest radiographs
    Yuan Lin
    Carl E Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, NC 27705, USA
    Med Phys 39:7019-31. 2012
    ..In this paper, the authors developed a novel strategy to simulate radiologists' perceptual evaluation process on actual clinical chest images...
  28. pmc Estimation of the two-dimensional presampled modulation transfer function of digital radiography devices using one-dimensional test objects
    Jered R Wells
    Carl E Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, NC 27705, USA
    Med Phys 39:6148-60. 2012
    ..This current work proposes the application of commonly available 1D test devices for practical and accurate estimation of the 2D presampled MTF of digital imaging systems...