SABEE Y MOLLOI

Summary

Affiliation: University of California
Country: USA

Publications

  1. pmc Quantification of fractional flow reserve based on angiographic image data
    Jerry T Wong
    Department of Radiological Sciences, Medical Sciences I, B 140, University of California, Irvine, CA 92697, USA
    Int J Cardiovasc Imaging 28:13-22. 2012
  2. pmc Estimation of coronary artery hyperemic blood flow based on arterial lumen volume using angiographic images
    Sabee Molloi
    Department of Radiological Sciences, University of California, Medical Sciences B, B 140, Irvine, CA 92697, USA
    Int J Cardiovasc Imaging 28:1-11. 2012
  3. ncbi request reprint Scatter-glare estimation for digital radiographic systems: comparison of digital filtration and sampling techniques
    S Molloi
    Department of Radiological Sciences, Medical Sciences I, University of California, Irvine 92697, USA
    IEEE Trans Med Imaging 17:881-8. 1998
  4. ncbi request reprint Regional blood flow analysis and its relationship with arterial branch lengths and lumen volume in the coronary arterial tree
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Phys Med Biol 52:1495-503. 2007
  5. pmc Quantification of breast arterial calcification using full field digital mammography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 35:1428-39. 2008
  6. ncbi request reprint Regional volumetric coronary blood flow measurement by digital angiography: in vivo validation
    Sabee Molloi
    Department of Radiological Sciences, Medical Sciences I, B 140, University of California, Irvine, CA 92697 USA
    Acad Radiol 11:757-66. 2004
  7. pmc Reproducibility of breast arterial calcium mass quantification using digital mammography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, Medical Sciences I, B 140, Irvine, CA 92697, USA
    Acad Radiol 16:275-82. 2009
  8. ncbi request reprint Effect of vessel orientation on videodensitometry quantitative coronary arteriography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 30:2862-8. 2003
  9. ncbi request reprint Assessment of vasoreactivity using videodensitometry coronary angiography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Int J Cardiovasc Imaging 19:271-9. 2003
  10. ncbi request reprint Area x-ray beam equalization for digital angiography
    S Molloi
    Department of Radiological Sciences, University of California, Irvine 92697, USA
    Med Phys 26:2684-92. 1999

Collaborators

Detail Information

Publications39

  1. pmc Quantification of fractional flow reserve based on angiographic image data
    Jerry T Wong
    Department of Radiological Sciences, Medical Sciences I, B 140, University of California, Irvine, CA 92697, USA
    Int J Cardiovasc Imaging 28:13-22. 2012
    ..Angiographic FFR can potentially provide an assessment of the physiological severity of a coronary stenosis during routine diagnostic cardiac catheterization without a need to cross a stenosis with a pressure-wire...
  2. pmc Estimation of coronary artery hyperemic blood flow based on arterial lumen volume using angiographic images
    Sabee Molloi
    Department of Radiological Sciences, University of California, Medical Sciences B, B 140, Irvine, CA 92697, USA
    Int J Cardiovasc Imaging 28:1-11. 2012
    ..This, in conjunction with measured hyperemic flow in the presence of a stenosis, could be used to predict fractional flow reserve based entirely on angiographic data...
  3. ncbi request reprint Scatter-glare estimation for digital radiographic systems: comparison of digital filtration and sampling techniques
    S Molloi
    Department of Radiological Sciences, Medical Sciences I, University of California, Irvine 92697, USA
    IEEE Trans Med Imaging 17:881-8. 1998
    ..The results indicate that the digital filtration technique is more suited for applications such as coronary arteriography and ventriculography where the iodinated contrast material significantly changes the scatter-glare intensity...
  4. ncbi request reprint Regional blood flow analysis and its relationship with arterial branch lengths and lumen volume in the coronary arterial tree
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Phys Med Biol 52:1495-503. 2007
    ..This theoretical maximum blood flow, in conjunction with an angiographically measured blood flow, can potentially be used to calculate fractional flow reserve based entirely on angiographic data...
  5. pmc Quantification of breast arterial calcification using full field digital mammography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 35:1428-39. 2008
    ..The results demonstrated the feasibility and potential utility of the densitometry technique for accurate quantification of breast arterial calcium mass using standard digital mammography...
  6. ncbi request reprint Regional volumetric coronary blood flow measurement by digital angiography: in vivo validation
    Sabee Molloi
    Department of Radiological Sciences, Medical Sciences I, B 140, University of California, Irvine, CA 92697 USA
    Acad Radiol 11:757-66. 2004
    ..For this reason, a functional measure of stenosis severity is desirable. The goal of this study is to validate a video densitometry technique for quantitative assessment of regional volumetric coronary blood flow...
  7. pmc Reproducibility of breast arterial calcium mass quantification using digital mammography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, Medical Sciences I, B 140, Irvine, CA 92697, USA
    Acad Radiol 16:275-82. 2009
    ..The purpose of this study was to evaluate the reproducibility and inter-reader agreement of a technique for the quantification of BAC using standard digital mammography...
  8. ncbi request reprint Effect of vessel orientation on videodensitometry quantitative coronary arteriography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 30:2862-8. 2003
    ..The correction for the out-of-plane angle makes it possible to measure the absolute cross-sectional area using videodensitometery, which can be used to assess a diseased vessel segment with any complex geometry...
  9. ncbi request reprint Assessment of vasoreactivity using videodensitometry coronary angiography
    Sabee Molloi
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Int J Cardiovasc Imaging 19:271-9. 2003
    ....
  10. ncbi request reprint Area x-ray beam equalization for digital angiography
    S Molloi
    Department of Radiological Sciences, University of California, Irvine 92697, USA
    Med Phys 26:2684-92. 1999
    ..50. Also, x-ray tube loading due to the mask assembly itself was negligible. In conclusion, area beam equalization reduces the scatter-glare fraction and significantly improves CNR in the previously underpenetrated region of the image...
  11. ncbi request reprint X-ray beam equalization: feasibility and performance of an automated prototype system in a phantom and swine
    S Molloi
    Department of Radiological Sciences, Medical Sciences I, B 140, University of California, Irvine, CA 92697, USA
    Radiology 221:668-75. 2001
    ..To investigate the feasibility of an automated implementation of a beam equalization technique and to evaluate the experimental performance of the prototype system...
  12. ncbi request reprint Automated technique for angiographic determination of coronary blood flow and lumen volume
    Jerry T Wong
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Acad Radiol 13:186-94. 2006
    ..An automated technique for determining both coronary blood flow and lumen volume based on a first-pass analysis (FPA) of coronary angiograms and a template matching algorithm was evaluated...
  13. pmc Quantification of breast density with dual energy mammography: a simulation study
    Justin L Ducote
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 35:5411-8. 2008
    ..The possibility of using a standard screening mammogram as the low energy image is also discussed...
  14. ncbi request reprint Effect of area x-ray beam equalization on image quality and dose in digital mammography
    Jerry Wong
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Phys Med Biol 49:3539-57. 2004
    ..Moreover, equalized images of a breast phantom showed improved image quality. These results indicate that area beam equalization can improve image quality in digital mammography...
  15. pmc Quantification of breast density with dual energy mammography: an experimental feasibility study
    Justin L Ducote
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 37:793-801. 2010
    ..Breast density, the percentage of glandular breast tissue, has been shown to be a strong indicator of breast cancer risk. A quantitative method to measure breast density with dual energy mammography was investigated using physical phantoms...
  16. ncbi request reprint Automatic 3D vascular tree construction in CT angiography
    Zikuan Chen
    Department of Radiological Sciences, University of California, Medical Sciences I, B140, Irvine, CA 92697, USA
    Comput Med Imaging Graph 27:469-79. 2003
    ..Experimental demonstrations on both coronary artery phantom and a cast of coronary artery tree of a swine animal model are provided...
  17. ncbi request reprint Optimization of a flat-panel based real time dual-energy system for cardiac imaging
    Justin L Ducote
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 33:1562-8. 2006
    ..The main limitation of dynamic high-energy filtration is increased tube loading. The results of this study can be used to help develop an optimal dual-energy imaging system...
  18. ncbi request reprint Dual-energy cardiac imaging: an image quality and dose comparison for a flat-panel detector and x-ray image intensifier
    Justin L Ducote
    Department of Radiological Sciences, Medical Sciences I, B 140, University of California, Irvine, CA 92697, USA
    Phys Med Biol 52:183-96. 2007
    ..Suggested recommendations for optimal dual-energy imaging implementation are also provided...
  19. ncbi request reprint In vivo validation of the design rules of the coronary arteries and their application in the assessment of diffuse disease
    Yifang Zhou
    Department of Radiological Sciences, University of California Irvine, 92797, USA
    Phys Med Biol 47:977-93. 2002
    ....
  20. ncbi request reprint Vascular tree object segmentation by deskeletonization of valley courses
    Zikuan Chen
    Department of Radiological Sciences I, University of California, Medical Sciences 1, B 140, Irvine, CA 92697, USA
    Comput Med Imaging Graph 26:419-28. 2002
    ..Furthermore, stability to noise is resulted because derivative operations are not used. The segmentation technique was validated using coronary angiographic images...
  21. pmc Estimation of regional myocardial mass at risk based on distal arterial lumen volume and length using 3D micro-CT images
    Huy Le
    Department of Radiological Sciences, University of California, Irvine, CA 92697, United States
    Comput Med Imaging Graph 32:488-501. 2008
    ....
  22. ncbi request reprint Quantitative coronary angiography using image recovery techniques for background estimation in unsubtracted images
    Jerry T Wong
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 34:4003-15. 2007
    ....
  23. ncbi request reprint Effect of TiO2 nanotube parameters on field emission properties
    Yahya Alivov
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Nanotechnology 21:505706. 2010
    ..8 mA cm( - 2)), with subsequent decrease for larger diameters. The field emission properties initially improved with NT height until h = 5 ┬Ám, and later remained unchanged with further increases in h...
  24. doi request reprint Determination of fractional flow reserve (FFR) based on scaling laws: a simulation study
    Jerry T Wong
    Department of Radiological Sciences, University of California, Irvine, CA 92697, USA
    Phys Med Biol 53:3995-4011. 2008
    ..A relative form of FFR was introduced and was found to cancel out the influence of pressure on coronary flow, arterial volume and FFR estimation. The use of coronary flow and arterial volume for FFR determination appears promising...
  25. ncbi request reprint Real-time tumor tracking using implanted positron emission markers: concept and simulation study
    Tong Xu
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 33:2598-609. 2006
    ..Furthermore, the small size of PeTrack markers is expected to facilitate implantation and reduce patient risk...
  26. ncbi request reprint Effect of passive myocardium on the compliance of porcine coronary arteries
    Leila H Hamza
    Department of Biomedical Engineering, University of California Irvine, 204 Rockwell Engineering Centre, Irvine, CA 92697 2715, USA
    Am J Physiol Heart Circ Physiol 285:H653-60. 2003
    ..In the negative DeltaP range, the LAD artery does not collapse, whereas the same vessel readily collapses when tested in vitro. Hence, we conclude that myocardial tethering prevents collapse of large blood vessel under compression...
  27. ncbi request reprint Scanning-slit photon counting x-ray imaging system using a microchannel plate detector
    Polad M Shikhaliev
    Imaging Physics Laboratory, Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 31:1061-71. 2004
    ..Given the advantages of the edge-on MCP detector such as direct conversion and physical charge amplification, it can potentially be applied to mammography and chest radiography...
  28. ncbi request reprint Photon counting computed tomography: concept and initial results
    Polad M Shikhaliev
    Imaging Physics Laboratory, Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 32:427-36. 2005
    ..System uses 20 cm field of view MCP detectors based on 5 microm channel MCPs and high count rate ASIC electronics. It was concluded that the MSMS cone beam CT with a photon counting MCP detector is feasible for volume breast imaging...
  29. ncbi request reprint Positron autoradiography for intravascular imaging: feasibility evaluation
    Polad M Shikhaliev
    Department of Radiological Sciences, University of California at Irvine, Irvine, CA 92697, USA
    Phys Med Biol 51:963-79. 2006
    ..Experiments showed that detecting the coronary plaques using the proposed technique is possible. The proposed technique has the potential for fast and accurate detection of vulnerable coronary and other intravascular plaques...
  30. ncbi request reprint Feasibility of real time dual-energy imaging based on a flat panel detector for coronary artery calcium quantification
    Tong Xu
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 33:1612-22. 2006
    ..1 to 6.6 microSv for each dual-energy image, depending on patient thickness. The study shows that real-time dual-energy imaging can potentially be used as a low dose technique for quantifying coronary arterial calcium...
  31. pmc Radiation dose reduction using a CdZnTe-based computed tomography system: comparison to flat-panel detectors
    Q Le Huy
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 37:1225-36. 2010
    ....
  32. ncbi request reprint Patient-specific region-of-interest fluoroscopy device for X-ray dose reduction
    Tong Xu
    Department of Radiological Sciences, University of California, Medical Sciences I, B 140, Irvine, CA 92697, USA
    Radiology 226:585-92. 2003
    ..The image quality with and without an ROI filter was evaluated. This ROI fluoroscopic technique was shown to substantially reduce patient and operator radiation exposure without degrading image quality within the ROI...
  33. ncbi request reprint Nonuniformity of axial and circumferential remodeling of large coronary veins in response to ligation
    Jenny Susana Choy
    Dept of Biomedical Engineering, University of California, Irvine, CA 92697 2715, USA
    Am J Physiol Heart Circ Physiol 290:H1558-65. 2006
    ..Furthermore, the geometric remodeling of the coronary vein restores the circumferential stress to the homeostatic value...
  34. ncbi request reprint Area beam equalization: optimization and performance of an automated prototype system for chest radiography
    Tong Xu
    Department of Radiological Sciences, University of California, Medical Sciences I, B 140, Irvine, CA 92697, USA
    Acad Radiol 11:377-89. 2004
    ..To evaluate the feasibility and performance of an x-ray beam equalization system for chest radiography using anthropomorphic phantoms...
  35. doi request reprint Allometric scaling in the coronary arterial system
    Huy Q Le
    Department of Radiological Sciences, Medical Sciences I, B 140, University of California, Irvine, Irvine, CA 92697, USA
    Int J Cardiovasc Imaging 24:771-81. 2008
    ..002 MA + 2.033 g. The relationship of the morphological parameters of the coronary arterial tree can potentially be used for quantification of diffuse coronary artery disease and anatomic area at risk...
  36. ncbi request reprint Treatment planning considerations of reshapeable automatic intensity modulator for intensity modulated radiation therapy
    Tong Xu
    Department of Radiological Sciences, University of California, Irvine, California 92697, USA
    Med Phys 31:2344-55. 2004
    ..Furthermore, the RAIM system with 1 x 1 cm2 resolution required significantly lower monitor units as compared to the other IMRT techniques for the two cases studied...
  37. ncbi request reprint Reshapable physical modulator for intensity modulated radiation therapy
    Tong Xu
    Department of Radiological Sciences, University of California, Irvine 92697, USA
    Med Phys 29:2222-9. 2002
    ....
  38. pmc Assessment of coronary microcirculation in a swine animal model
    Zhang Zhang
    Department of Radiological Sciences, University of California Irvine, Irvine, California 92697, USA
    Am J Physiol Heart Circ Physiol 301:H402-8. 2011
    ..This improved accuracy was more prevalent when stenosis existed. Moreover, NMR(ah) is potentially a less invasive method for assessing coronary microcirculation...
  39. pmc Quantification of coronary microvascular resistance using angiographic images for volumetric blood flow measurement: in vivo validation
    Zhang Zhang
    Dept of Radiological Sciences, Univ of California Irvine, Medical Sciences B, B 140, Irvine, CA 92697, USA
    Am J Physiol Heart Circ Physiol 300:H2096-104. 2011
    ..This study provides a method to measure NMR without using a velocity wire, which can potentially be used to evaluate microvascular conditions during coronary arteriography...

Research Grants14

  1. Quantification of breast density using dual energy mammography
    SABEE Y MOLLOI; Fiscal Year: 2010
    ..The proposed method provides a volumetric measure of breast density and it has the potential to be incorporated into routine screening mammography. ..
  2. Quantification of coronary calcium mass by dual energy fluoroscopy
    Sabee Molloi; Fiscal Year: 2009
    ..Dual-energy imaging, because of its motion insensitivity, can serve as a foundation for quantitative cardiac analysis to proceed. ..
  3. Quantification of coronary calcium mass by dual energy fluoroscopy
    Sabee Molloi; Fiscal Year: 2007
    ..Dual-energy imaging, because of its motion insensitivity, can serve as a foundation for quantitative cardiac analysis to proceed. ..
  4. X-ray imaging using edge-on-microchannel plate detectors
    Sabee Molloi; Fiscal Year: 2006
    ..It can potentially provide a high-resolution detector with significant reduction in patient dose for digital mammography. ..
  5. Quantification of Regional coronary Blood Flow
    Sabee Molloi; Fiscal Year: 2003
    ..This quantification technique could be used to measure regional myocardial perfusion in patients undergoing standard coronary arteriography. ..
  6. Fractional flow reserve measurement based on coronary angiographic images
    SABEE Y MOLLOI; Fiscal Year: 2010
    ..This quantification technique could be used to measure fractional flow reserve in patients undergoing standard coronary arteriography. ..