Research Topics
| James T DobbinsSummaryAffiliation: Duke University Medical Center Country: USA Publications
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Detail Information
Publications
Chest radiography: optimization of X-ray spectrum for cesium iodide-amorphous silicon flat-panel detectorJames 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...
Detector or system? Extending the concept of detective quantum efficiency to characterize the performance of digital radiographic imaging systemsEhsan 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...- A framework for optimising the radiographic technique in digital X-ray imagingEhsan 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... 
Digital tomosynthesis of the chestJames 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...- Importance of point-by-point back projection correction for isocentric motion in digital breast tomosynthesis: relevance to morphology of structures such as microcalcificationsYing 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... - Comparative scatter and dose performance of slot-scan and full-field digital chest radiography systemsEhsan 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... - Digital x-ray tomosynthesis: current state of the art and clinical potentialJames 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... - Biplane correlation imaging: a feasibility study based on phantom and human dataEhsan 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... - Effective DQE (eDQE) and speed of digital radiographic systems: an experimental methodologyEhsan 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.... - Assessment of detective quantum efficiency: intercomparison of a recently introduced international standard with prior methodsNicole 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... - Multiprojection correlation imaging for improved detection of pulmonary nodulesEhsan 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.... - Intercomparison of methods for image quality characterization. II. Noise power spectrumJames 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)... - Methodology for generating a 3D computerized breast phantom from empirical dataChristina 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... - Measurement of the detective quantum efficiency in digital detectors consistent with the IEC 62220-1 standard: practical considerations regarding the choice of filter materialNicole T Ranger
Duke Advanced Imaging Laboratories, Department of Radiology, Duke University, Durham, North Carolina 27710, USA
Med Phys 32:2305-11. 2005.... - Effective dose efficiency: an application-specific metric of quality and dose for digital radiographyEhsan 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... - An analysis of the mechanical parameters used for finite element compression of a high-resolution 3D breast phantomChristina 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... - Chest tomosynthesis: technical principles and clinical updateJames 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... - Intercomparison of methods for image quality characterization. I. Modulation transfer functionEhsan 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... - Optimization of the matrix inversion tomosynthesis (MITS) impulse response and modulation transfer function characteristics for chest imagingDevon 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... - Generation of a suite of 3D computer-generated breast phantoms from a limited set of human subject dataChristina M L Hsu
Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708 and Carl E Ravin Advanced Imaging Laboratories, Duke University Medical Center, Durham, North Carolina 27705
Med Phys 40:043703. 2013..This suite of flexible breast phantoms can be used for multimodality imaging research to provide a known truth while concurrently producing realistic simulated imaging data... - Tomosynthesis imaging: at a translational crossroadsJames 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... - Fundamental imaging characteristics of a slot-scan digital chest radiographic systemEhsan 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... - Quantitative evaluation of noise reduction strategies in dual-energy imagingRichard 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... - An image-based technique to assess the perceptual quality of clinical chest radiographsYuan 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... - The effect of averaging adjacent planes for artifact reduction in matrix inversion tomosynthesisDevon J Godfrey
Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27705
Med Phys 40:021907. 2013.... - Estimation of the two-dimensional presampled modulation transfer function of digital radiography devices using one-dimensional test objectsJered 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... - Plate-specific gain map correction for the improvement of detective quantum efficiency in computed radiographyErich 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...