R M Summers

Summary

Affiliation: National Institutes of Health
Country: USA

Publications

  1. ncbi request reprint Evaluation of the aortic root by MRI: insights from patients with homozygous familial hypercholesterolemia
    R M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD, USA
    Circulation 98:509-18. 1998
  2. ncbi request reprint CT colonography with computer-aided detection: automated recognition of ileocecal valve to reduce number of false-positive detections
    Ronald M Summers
    Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bldg 10, Rm 1C660, 10 Center Dr, MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 233:266-72. 2004
  3. ncbi request reprint Computer-aided detection of polyps on oral contrast-enhanced CT colonography
    Ronald M Summers
    Radiology Department, National Institutes of Health, 10 Center Dr, Bldg 10, Rm 1C660, MSC 1182, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 184:105-8. 2005
  4. pmc Automated measurement of colorectal polyp height at CT colonography: hyperplastic polyps are flatter than adenomatous polyps
    Ronald M Summers
    Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 193:1305-10. 2009
  5. ncbi request reprint Science to practice: Detection of active colonic hemorrhage with use of helical CT: findings in a swine model
    Ronald M Summers
    Department of Diagnostic Radiology, National Institutes of Health, 10 Center Dr, MSC 1182, Bldg 10, Rm 1C660, Bethesda, MD 20892 1182, USA
    Radiology 228:599-600. 2003
  6. pmc Improving the accuracy of CTC interpretation: computer-aided detection
    Ronald M Summers
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Building 10, Room 1C368X MSC 1182, Bethesda, MD 20892 1182, USA
    Gastrointest Endosc Clin N Am 20:245-57. 2010
  7. pmc Polyp size measurement at CT colonography: what do we know and what do we need to know?
    Ronald M Summers
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Department of Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bldg 10, Room 1C368X, MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 255:707-20. 2010
  8. pmc Computed tomographic virtual colonoscopy computer-aided polyp detection in a screening population
    Ronald M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, Maryland 20892 1182, USA
    Gastroenterology 129:1832-44. 2005
  9. pmc CT colonography computer-aided polyp detection: Effect on radiologist observers of polyp identification by CAD on both the supine and prone scans
    Ronald M Summers
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, MD 20892 1182, USA
    Acad Radiol 17:948-59. 2010
  10. ncbi request reprint Colonic polyps: complementary role of computer-aided detection in CT colonography
    Ronald M Summers
    Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Dr, MSC 1182, Bldg 10, Rm 1C660, Bethesda, MD 20892 1182, USA
    Radiology 225:391-9. 2002

Collaborators

Detail Information

Publications72

  1. ncbi request reprint Evaluation of the aortic root by MRI: insights from patients with homozygous familial hypercholesterolemia
    R M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD, USA
    Circulation 98:509-18. 1998
    ..However, the aortic wall and plaque have not yet been assessed in this condition by MRI. We evaluated the aortic root by use of MRI in 17 HFH patients and 12 normal control subjects in a prospective, blinded, controlled study...
  2. ncbi request reprint CT colonography with computer-aided detection: automated recognition of ileocecal valve to reduce number of false-positive detections
    Ronald M Summers
    Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bldg 10, Rm 1C660, 10 Center Dr, MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 233:266-72. 2004
    ..This result is clinically important because, by reducing the frequency of a common cause of false-positive detections, this algorithm may improve the efficiency of physicians who use CAD...
  3. ncbi request reprint Computer-aided detection of polyps on oral contrast-enhanced CT colonography
    Ronald M Summers
    Radiology Department, National Institutes of Health, 10 Center Dr, Bldg 10, Rm 1C660, MSC 1182, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 184:105-8. 2005
  4. pmc Automated measurement of colorectal polyp height at CT colonography: hyperplastic polyps are flatter than adenomatous polyps
    Ronald M Summers
    Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 193:1305-10. 2009
    ..Using automated software that computes polyp height, we determined whether hyperplastic colonic polyps on CTC are indeed flatter than adenomatous polyps of comparable width...
  5. ncbi request reprint Science to practice: Detection of active colonic hemorrhage with use of helical CT: findings in a swine model
    Ronald M Summers
    Department of Diagnostic Radiology, National Institutes of Health, 10 Center Dr, MSC 1182, Bldg 10, Rm 1C660, Bethesda, MD 20892 1182, USA
    Radiology 228:599-600. 2003
  6. pmc Improving the accuracy of CTC interpretation: computer-aided detection
    Ronald M Summers
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Building 10, Room 1C368X MSC 1182, Bethesda, MD 20892 1182, USA
    Gastrointest Endosc Clin N Am 20:245-57. 2010
    ..In its currently proposed use as an adjunct to standard image interpretation, computer-aided polyp detection serves as a spellchecker rather than an efficiency enhancer...
  7. pmc Polyp size measurement at CT colonography: what do we know and what do we need to know?
    Ronald M Summers
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Department of Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bldg 10, Room 1C368X, MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 255:707-20. 2010
    ..This review summarizes current best practices for polyp size measurement, describes the role of automated size measurement software, discusses how to manage the measurement uncertainties, and identifies areas requiring further research...
  8. pmc Computed tomographic virtual colonoscopy computer-aided polyp detection in a screening population
    Ronald M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, Maryland 20892 1182, USA
    Gastroenterology 129:1832-44. 2005
    ..Our objective was to determine whether a computer program is as sensitive as optical colonoscopy for the detection of adenomatous colonic polyps on CT virtual colonoscopy...
  9. pmc CT colonography computer-aided polyp detection: Effect on radiologist observers of polyp identification by CAD on both the supine and prone scans
    Ronald M Summers
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, MD 20892 1182, USA
    Acad Radiol 17:948-59. 2010
    ....
  10. ncbi request reprint Colonic polyps: complementary role of computer-aided detection in CT colonography
    Ronald M Summers
    Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, 10 Center Dr, MSC 1182, Bldg 10, Rm 1C660, Bethesda, MD 20892 1182, USA
    Radiology 225:391-9. 2002
    ....
  11. pmc Normalized distance along the colon centerline: a method for correlating polyp location on CT colonography and optical colonoscopy
    Ronald M Summers
    Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 193:1296-304. 2009
    ..The purpose of this study was to determine whether a polyp's normalized distance along the colon centerline derived from CTC data can accurately predict its location on OC...
  12. ncbi request reprint Automated polyp detector for CT colonography: feasibility study
    R M Summers
    Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bldg 10, Rm 1C660, 10 Center Dr MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 216:284-90. 2000
    ..There were no false-positive detections. Shape analysis is technically feasible and is a promising approach to automated polyp detection...
  13. doi request reprint Performance of a previously validated CT colonography computer-aided detection system in a new patient population
    Ronald M Summers
    Diagnostic Radiology Department, National Institutes of Health Clinical Center, Bldg 10, Rm 1C368X MSC 1182, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 191:168-74. 2008
    ....
  14. pmc Conspicuity of colorectal polyps at CT colonography: visual assessment, CAD performance, and the important role of polyp height
    Ronald M Summers
    Diagnostic Radiology Department, National Institutes of Health Clinical Center, Bethesda, MD 20892 1182, USA
    Acad Radiol 16:4-14. 2009
    ....
  15. ncbi request reprint MR virtual angioscopy of thoracic aortic atherosclerosis in homozygous familial hypercholesterolemia
    R M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD 20892 1182, USA
    J Comput Assist Tomogr 25:371-7. 2001
    ..Thoracic aortic atherosclerosis in patients with HFH was assessed with contrast-enhanced MR angiograms using exoscopic and endoscopic virtual angioscopy reconstructions and maximum intensity projections (MIPs)...
  16. ncbi request reprint CT virtual bronchoscopy of the central airways in patients with Wegener's granulomatosis
    Ronald M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD 20892 1182, USA
    Chest 121:242-50. 2002
    ..To compare CT virtual bronchoscopy (VB) to CT alone and to conventional bronchoscopy for evaluation of central airway stenoses in patients with Wegener's granulomatosis...
  17. pmc Feasibility of simultaneous computed tomographic colonography and fully automated bone mineral densitometry in a single examination
    Ronald M Summers
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences Department, National Institutes of Health Clinical Center, Bethesda, MD 20892 1182, USA
    J Comput Assist Tomogr 35:212-6. 2011
    ..To show the feasibility of calculating the bone mineral density (BMD) from computed tomographic colonography (CTC) scans using fully automated software...
  18. ncbi request reprint Assessment of polyp and mass histopathology by intravenous contrast-enhanced CT colonography
    Ronald M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bldg 10, Room 1C351, 10 Center Dr MSC 1182, Bethesda, MD 20892 1182, USA
    Acad Radiol 13:1490-5. 2006
    ..We sought to demonstrate that intravenous contrast-enhanced CT colonography (CTC) can distinguish colonic adenomas from carcinomas...
  19. pmc Statistical location model for abdominal organ localization
    Jianhua Yao
    Imaging Biomarkers and Computer Aided Diagnosis Lab, Clinical Center, The National Institutes of Health, Bethesda, MD 20892, USA
    Med Image Comput Comput Assist Interv 12:9-17. 2009
    ..The SLM enabled reduction in the overall localization error from 62.0 +/- 28.5 mm to 5.8 +/- 1.5 mm. Experiments showed that the SLM was robust to the reference model selection...
  20. pmc Registration of prone and supine CT colonography scans based on correlation optimized warping and canonical correlation analysis
    Shijun Wang
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, National Institutes of Health, Bethesda, MD 20892 1182, USA
    Conf Proc IEEE Eng Med Biol Soc 2009:81-4. 2009
    ..Experimental results show that by using our method, the estimation error of polyp location could be reduced 68.5% (from 41.6mm to 13.1mm on average) compared to a traditional dynamic warping algorithm...
  21. pmc Scale-based scatter correction for computer-aided polyp detection in CT colonography
    Jiamin Liu
    Department of Radiology, National Institutes of Health, Bethesda, Maryland 20892 1182, USA
    Med Phys 35:5664-71. 2008
    ..The authors' results indicated that CAD with this correction method as a preprocessing step can yield a high sensitivity and a relatively low FP rate in CTC...
  22. ncbi request reprint Computer-assisted detection of colonic polyps with CT colonography using neural networks and binary classification trees
    Anna K Jerebko
    Department of Radiology, National Institutes of Health, 10 Center Drive, Bethesda, Maryland 20892 1182, USA
    Med Phys 30:52-60. 2003
    ..The backpropagation neural net with one hidden layer trained with Levenberg-Marquardt algorithm achieved the best results: sensitivity 90% and specificity 95% with 16 false positives per study...
  23. ncbi request reprint Automated polyp detection at CT colonography: feasibility assessment in a human population
    R M Summers
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bldg 10, Rm 1C660, 10 Center Dr, MSC 1182, Bethesda, MD 20892-1182, USA
    Radiology 219:51-9. 2001
    ..Colonic distention is an important determinant of sensitivity. Further increases in sensitivity may be achieved by adding prone CT colonography...
  24. ncbi request reprint Colonic polyp segmentation in CT colonography-based on fuzzy clustering and deformable models
    Jianhua Yao
    Diagnostic Radiology Department, Clinical Center, The National Institutes of Health, 10 Center Drive, MSC 1182, Bethesda, MD 20892 1182 USA
    IEEE Trans Med Imaging 23:1344-52. 2004
    ..Our segmentation method was able to eliminate 30% of FP detections. The volumetric features computed from the segmentation can further reduce FP detections by 50% at 80% sensitivity...
  25. ncbi request reprint Detection of colon wall outer boundary and segmentation of the colon wall based on level set methods
    R Van Uitert
    Diagnostic Radiol Dept, Nat Inst of Health, Bethesda, MD 20892, USA
    Conf Proc IEEE Eng Med Biol Soc 1:3017-20. 2006
    ..After determining this location, the algorithm segments the entire colon wall at subvoxel accurate precision. The algorithm has been validated on several CTC datasets...
  26. ncbi request reprint Automated seed placement for colon segmentation in computed tomography colonography
    Gheorghe Iordanescu
    Department of Radiology, National Institutes of Health, Building 10, Room 1C660, 10 Center Drive MSC 1182, Bethesda, MD 20892 1182, USA
    Acad Radiol 12:182-90. 2005
    ..To present an algorithm to automatically locate seeds for colon segmentation in computed tomography colonography (CTC)...
  27. ncbi request reprint CT colonography with computer-aided polyp detection: volume and attenuation thresholds to reduce false-positive findings owing to the ileocecal valve
    Stacy D O'Connor
    Department of Radiology, National Institutes of Health, 10 Center Dr, Bldg 10, Rm 1C351, MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 241:426-32. 2006
    ..To retrospectively identify volume and average attenuation thresholds for differentiating between ileocecal valve (ICV) and polyp at computed tomographic (CT) colonography with computer-aided detection (CAD)...
  28. ncbi request reprint Reduction of false positives on the rectal tube in computer-aided detection for CT colonography
    Gheorghe Lordanescu
    Department of Radiology, National Institutes of Health Building 10, Bethesda, Maryland 20892 1182, USA
    Med Phys 31:2855-62. 2004
    ..To eliminate false-positive (FP) polyp detections on the rectal tube (RT) in CT colonography (CTC) computer-aided detection (CAD)...
  29. ncbi request reprint Automated centerline for computed tomography colonography
    Gheorghe Iordanescu
    Department of Radiology, National Institutes of Health, Building 10, Room 1C660, 10 Center Dr, MSC 1182, Bethesda, MD 20892 1182, USA
    Acad Radiol 10:1291-301. 2003
    ..Two applications of this method are demonstrated: to compute local colonic distension (caliber), and to match polyps on supine and prone images...
  30. ncbi request reprint Quality assessment for CT colonography: validation of automated measurement of colonic distention and residual fluid
    Keshav K Deshpande
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bldg 10, Room 1C368X, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 189:1457-63. 2007
    ....
  31. pmc Optimizing computer-aided colonic polyp detection for CT colonography by evolving the Pareto fronta
    Jiang Li
    Radiology and Imaging Sciences, Clinical Center National Institutes of Health, Bethesda, Maryland 20892 1182, USA
    Med Phys 36:201-12. 2009
    ..2% to 90.58% with an increase of 8.38% (95% CI [0.75%, 16%], p = 0.03) for polyps 8 mm or larger at comparable false positive rates. The sensitivities of the optimized system are nearly equivalent to those of expert radiologists...
  32. ncbi request reprint Teniae coli-based circumferential localization system for CT colonography: feasibility study
    Adam Huang
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bethesda, MD 20892 1182, USA
    Radiology 243:551-60. 2007
    ..The teniae coli are extractable landmarks, and the teniae coli-based circumferential localization system helps guide virtual navigation and polyp registration at CT colonography...
  33. pmc Improved classifier for computer-aided polyp detection in CT colonography by nonlinear dimensionality reduction
    Shijun Wang
    Diagnostic Radiology Department, National Institutes of Health Clinical Center, Building 10, Bethesda, Maryland 20892 1182, USA
    Med Phys 35:1377-86. 2008
    ..001)...
  34. ncbi request reprint Support vector machines committee classification method for computer-aided polyp detection in CT colonography
    Anna K Jerebko
    Diagnostic Radiology Department, National Institutes of Health, Bethesda, MD 20892, USA
    Acad Radiol 12:479-86. 2005
    ..A new classification scheme for the computer-aided detection of colonic polyps in computed tomographic colonography is proposed...
  35. ncbi request reprint Gray-scale skeletonization of small vessels in magnetic resonance angiography
    P J Yim
    Clinical Center, NIH, Bethesda, MD 20892, USA
    IEEE Trans Med Imaging 19:568-76. 2000
    ..These methods apply best to smaller vessels where the image intensity peaks at the center of the lumen which, for the abdominal MRA, includes vessels whose diameter is less than 1 cm...
  36. pmc Wavelet method for CT colonography computer-aided polyp detection
    Jiang Li
    Diagnostic Radiology Department, Clinical Center National Institutes of Health, Bethesda, Maryland 20892 1182, USA
    Med Phys 35:3527-38. 2008
    ..11%, 95% confidence interval [66.39%, 75.74%], p=0.1713). We conclude that this wavelet-based postprocessor can substantially reduce the false positive rate of our CTC CAD for this important polyp size range...
  37. pmc CT and image processing non-invasive indicators of sickle cell secondary pulmonary hypertension
    Marius George Linguraru
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bethesda, MD 20892 USA
    Conf Proc IEEE Eng Med Biol Soc 2008:859-62. 2008
    ..71). CT with image processing shows great potential as a surrogate indicator of pulmonary hemodynamics or response to therapy, which could be an important tool for drug discovery and noninvasive clinical surveillance...
  38. pmc CAD of colon cancer on CT colonography cases without cathartic bowel preparation
    Marius George Linguraru
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bethesda, MD 20892 USA
    Conf Proc IEEE Eng Med Biol Soc 2008:2996-9. 2008
    ..The automatic detection of colon polyps using our CAD system on cathartic-free data improves considerably with the addition of the automatic stool removal module from 74% to 86% true positive (TP) rate at 6.4 false positives (FP)/case...
  39. pmc Multi-organ segmentation from multi-phase abdominal CT via 4D graphs using enhancement, shape and location optimization
    Marius George Linguraru
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Bethesda, MD, USA
    Med Image Comput Comput Assist Interv 13:89-96. 2010
    ..Comparative results demonstrate the effects of appearance and enhancement, and shape and location on organ segmentation...
  40. pmc Registration of prone and supine CT colonography scans using correlation optimized warping and canonical correlation analysis
    Shijun Wang
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, Maryland 20892 1182, USA
    Med Phys 36:5595-603. 2009
    ..To assist radiologists in CTC reading, in this paper we propose an automated method for colon registration from supine and prone CTC scans...
  41. doi request reprint Reversible projection technique for colon unfolding
    Jianhua Yao
    Clinical Image Processing Laboratory, National Institutes of Health, Bethesda, MD 20892, USA
    IEEE Trans Biomed Eng 57:2861-9. 2010
    ....
  42. pmc Segmentation and quantification of pulmonary artery for noninvasive CT assessment of sickle cell secondary pulmonary hypertension
    Marius George Linguraru
    Radiology and Imaging Sciences, Clinical Center National Institutes of Health, Bethesda, Maryland 20892, USA
    Med Phys 37:1522-32. 2010
    ..The authors propose a semiautomated computer-assisted diagnostic (CAD) tool to quantify the main PA size from pulmonary CT angiography (CTA)...
  43. ncbi request reprint Atlas-based automated segmentation of spleen and liver using adaptive enhancement estimation
    Marius George Linguraru
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Bethesda, MD, USA
    Med Image Comput Comput Assist Interv 12:1001-8. 2009
    ..09 mm; DICE/Tanimoto overlaps = 95.2/91) and liver (RMS error = 2.3 mm, and DICE/Tanimoto overlaps = 96.2/92.7). The correlations (R2) with clinical/manual height measurements were 0.97 and 0.93 for the spleen and liver respectively...
  44. pmc Linear measurement of polyps in CT colonography using level sets on 3D surfaces
    Sovira Tan
    National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Clinical Center, 10 Center Drive MSC 1182, Bethesda, MD 20892, USA
    Conf Proc IEEE Eng Med Biol Soc 2009:3617-20. 2009
    ..A 3D manual measurement was used as the reference standard. A correlation of 0.825 was found between polyp measurements from our new method and the reference standard...
  45. pmc Computer-aided renal cancer quantification and classification from contrast-enhanced CT via histograms of curvature-related features
    Marius George Linguraru
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
    Conf Proc IEEE Eng Med Biol Soc 2009:6679-82. 2009
    ..Cancer types are further classified into four categories. Computer-assisted image analysis shows great potential for tumor diagnosis and monitoring...
  46. pmc Computer aided evaluation of ankylosing spondylitis using high-resolution CT
    Sovira Tan
    National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Clinical Center, Bethesda, MD 20892, USA
    IEEE Trans Med Imaging 27:1252-67. 2008
    ..The results of our algorithm were validated by comparison with a semi-quantitative evaluation made by a medical expert who visually inspected the CT scans. Correlation between the two evaluations was found to be 0.936 ( p < 10(-18)) ...
  47. ncbi request reprint Virtual bronchoscopy for evaluation of airway disease
    Steven E Finkelstein
    Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Building 10, Room 2B 07, 10 Center Drive, National Institutes of Health, Bethesda, MD 20892 1502, USA
    Thorac Surg Clin 14:79-86. 2004
    ....
  48. ncbi request reprint Automatic correction of level set based subvoxel precise centerlines for virtual colonoscopy using the colon outer wall
    Robert L Van Uitert
    National Institutes of Health, Bethesda, MD 20892, USA
    IEEE Trans Med Imaging 26:1069-78. 2007
    ..We have demonstrated successfully the effectiveness of our algorithm on 50 cases, 25 of which resulted in erroneous solutions by previous centerline algorithms due to variability in the colon distention...
  49. ncbi request reprint Oral contrast adherence to polyps on CT colonography
    Stacy D O'Connor
    Radiology Department, National Institutes of Health, Bethesda, MD and Uniformed Services University of the Health Sciences, Bethesda, MD 20892 1182, USA
    J Comput Assist Tomogr 30:51-7. 2006
    ..Polyps with villous histology show a higher rate of contrast adherence than nonvillous polyps...
  50. ncbi request reprint Neopterin and quinolinic acid are surrogate measures of disease activity in the juvenile idiopathic inflammatory myopathies
    Lisa G Rider
    Laboratory of Molecular and Developmental Immunology, Division of Monoclonal Antibodies, Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, MD 20892, USA
    Clin Chem 48:1681-8. 2002
    ..We evaluated the utility of neopterin and quinolinic acid (QUIN) as surrogate measures of disease activity in juvenile idiopathic inflammatory myopathies (IIMs)...
  51. ncbi request reprint Hybrid segmentation of colon filled with air and opacified fluid for CT colonography
    Marek Franaszek
    Diagnostic Radiology Department, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bethesda, MD 20892, USA
    IEEE Trans Med Imaging 25:358-68. 2006
    ..In addition, visual inspection of 24 CT colonography scans demonstrated good performance of our procedure: the reconstructed colonic wall appeared smooth even at the interface between air and fluid and there were no leaked regions...
  52. ncbi request reprint Comparative evaluation of super high-resolution CT scan and virtual bronchoscopy for the detection of tracheobronchial malignancies
    Steven E Finkelstein
    Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, The National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
    Chest 124:1834-40. 2003
    ....
  53. pmc Automated segmentation and quantification of liver and spleen from CT images using normalized probabilistic atlases and enhancement estimation
    Marius George Linguraru
    Imaging Biomarkers and Computer Aided Diagnosis Laboratory, Radiology and Imaging Sciences, Clinical Center National Institutes of Health, 10 Center Drive Bethesda, Maryland 20892, USA
    Med Phys 37:771-83. 2010
    ..To investigate the potential of the normalized probabilistic atlases and computer-aided medical image analysis to automatically segment and quantify livers and spleens for extracting imaging biomarkers (volume and height)...
  54. ncbi request reprint CT colonography with computer-aided detection as a second reader: observer performance study
    Nicholas Petrick
    National Institute of Biomedical Imaging and Bioengineering Center for Devices and Radiological Health Joint Laboratory for the Assessment of Medical Imaging Systems, U S Food and Drug Administration, Rockville, MD, USA
    Radiology 246:148-56. 2008
    ....
  55. ncbi request reprint Novel thoracic imaging augments diagnosis of bronchial obstruction
    Steven E Finkelstein
    National Institutes of Health, Bethesda, Maryland 20892, USA
    Ann Thorac Surg 76:296. 2003
  56. ncbi request reprint Multiple neural network classification scheme for detection of colonic polyps in CT colonography data sets
    Anna K Jerebko
    Department of Diagnostic Radiology, Warren Grant Magnuson Clinical Center, National Institutes of Health, Bldg 10, Rm 1C660, 10 Center Dr, MSC 1182, Bethesda, M D 20892 1182, USA
    Acad Radiol 10:154-60. 2003
    ..A new classification system for colonic polyp detection, designed to increase sensitivity and reduce the number of false-positive findings with computed tomographic colonography, was developed and tested in this study...
  57. ncbi request reprint Adaptive deformable model for colonic polyp segmentation and measurement on CT colonography
    Jianhua Yao
    Diagnostic Radiology Department, Clinical Center National Institutes of Health, Bethesda, Maryland 20892, USA
    Med Phys 34:1655-64. 2007
    ..61 for the linear measurement and 0.98 for the volumetric measurement. The mean Dice coefficient for volume overlap between automatic and manual segmentation was 0.752 (standard deviation 0.154)...
  58. ncbi request reprint Challenges for computer-aided diagnosis for CT colonography
    R M Summers
    Diagnostic Radiology Department, National Institutes of Health, Building 10, Room 1C660, 10 Center Drive, MSC 1182, Bethesda, MD 20892 1182, USA
    Abdom Imaging 27:268-74. 2002
    ..This article reviews the current state of research in this nascent field and explores major challenges and avenues for future work...
  59. pmc Current status of CT colonography
    Suzanne M Frentz
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bldg 10, Room 1C351, 10 Center Dr MSC 1182, Bethesda, MD 20892 1182, USA
    Acad Radiol 13:1517-31. 2006
  60. ncbi request reprint Virtual bronchoscopy for evaluation of malignant tumors of the thorax
    Steven E Finkelstein
    Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Institutes of Health, Bethesda, MD 20892 1502, USA
    J Thorac Cardiovasc Surg 123:967-72. 2002
    ..This study was undertaken to evaluate the diagnostic potential of virtual bronchoscopy by comparing virtual bronchoscopic images with fiberoptic bronchoscopic findings in patients with thoracic malignant disease...
  61. ncbi request reprint Revisiting oral barium sulfate contrast agents
    Ronald M Summers
    Diagnostic Radiology Department, National Institutes of Health, 10 Center Dr, Bldg 10, Rm 1C351, MSC 1182, Bethesda, MD 20892 1182, USA
    Acad Radiol 14:72-80. 2007
    ..Our review summarizes numerous aspects of oral barium sulfate contrast agents as well as tests to assess adherence and coating ability of the agents, offering arenas to explore and tools for evaluation...
  62. pmc Temporal and multiinstitutional quality assessment of CT colonography
    Robert L Van Uitert
    Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bldg 10, Rm 1C368X MSC 1182, Bethesda, MD 20892 1182, USA
    AJR Am J Roentgenol 191:1503-8. 2008
    ....
  63. ncbi request reprint Polyps: linear and volumetric measurement at CT colonography
    Srinath C Yeshwant
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bldg 10, Room 1C351, 10 Center Dr, MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 241:802-11. 2006
    ..To retrospectively determine which of several computed tomographic (CT) colonography-based polyp measurements is most compatible with the linear measurement at optical colonoscopy and which is best for assessing change in polyp size...
  64. ncbi request reprint Lytic metastases in thoracolumbar spine: computer-aided detection at CT--preliminary study
    Jianhua Yao
    Diagnostic Radiology Department, Clinical Center, National Institutes of Health, Bldg 10, Room 1C351, 10 Center Dr, MSC 1182, Bethesda, MD 20892 1182, USA
    Radiology 242:811-6. 2007
    ..To evaluate the sensitivity of a computer-aided detection (CAD) system for detection of lytic thoracolumbar spinal lesions at body CT, with results of manual lesion segmentation as the reference standard...
  65. ncbi request reprint Comparative performance of two polyp detection systems on CT colonography
    J G Fletcher
    Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
    AJR Am J Roentgenol 189:277-82. 2007
    ..The purpose of our study was to evaluate two current automatic polyp detection systems to determine their sensitivity and false-positive rate in patients who have undergone CT colonography and subsequent endoscopy...
  66. ncbi request reprint Computer-aided detection of polyps in a colon phantom: effect of scan orientation, polyp size, collimation, and dose
    Shuo Hung Ling
    Institute for Medical Imaging and Image Analysis, Department of Electrical and Computer Engineering, George Washington University, Washington, DC, USA
    J Comput Assist Tomogr 26:1013-8. 2002
    ..To determine the importance of polyp size, orientation to the scan plane, collimation, scanner type (single or multislice helical), and radiation dose on computed tomography (CT) colonography computer-aided detection...
  67. ncbi request reprint Tracheal and central bronchial aerodynamics using virtual bronchoscopy and computational fluid dynamics
    Juan R Cebral
    School of Computational Sciences, George Mason University, Fairfax, VA 22030, USA
    IEEE Trans Med Imaging 23:1021-33. 2004
    ..Pressure and flow patterns in a human airway were computed noninvasively. These showed decreased pressure and increased shear stress in the region of a stenosis...
  68. ncbi request reprint Computer-assisted detection of subcutaneous melanomas: feasibility assessment
    Jeffrey Solomon
    Sensor Systems, Inc, Sterling, VA, USA
    Acad Radiol 11:678-85. 2004
    ..The use of a novel computer-assisted detection scheme to locate subcutaneous melanoma lesions in body CT images was investigated...
  69. ncbi request reprint Road maps for advancement of radiologic computer-aided detection in the 21st century
    Ronald M Summers
    Radiology 229:11-3. 2003
  70. ncbi request reprint Validation and clinical significance of the Childhood Myositis Assessment Scale for assessment of muscle function in the juvenile idiopathic inflammatory myopathies
    Adam M Huber
    IWK Health Centre and Dalhousie University, 5850 University Avenue, Halifax, Nova Scotia B3J 3G9, Canada
    Arthritis Rheum 50:1595-603. 2004
    ....
  71. ncbi request reprint Biomedical Imaging Research Opportunities Workshop II: report and recommendations
    C Leon Partain
    Dept of Radiology, Vanderbilt Univ Medical Ctr, RR 1223, MCN, 1161 21st Ave South, Nashville, TN 37232 2675, USA
    Radiology 236:389-403. 2005
  72. ncbi request reprint Virtual colonoscopy
    Ronald M Summers
    JAMA 292:432-3; author reply 433. 2004