J B Ludlow

Summary

Affiliation: University of North Carolina
Country: USA

Publications

  1. ncbi request reprint Evaluation of tuned-aperture computed tomography in the detection of simulated periodontal defects
    Aruna Ramesh
    Division of Oral and Maxillofacial Radiology, Department of General Dentistry, Tufts University School of Dental Medicine, Boston, Mass 02111, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 93:341-9. 2002
  2. ncbi request reprint Dosimetry of two extraoral direct digital imaging devices: NewTom cone beam CT and Orthophos Plus DS panoramic unit
    J B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, North Carolina 27599, USA
    Dentomaxillofac Radiol 32:229-34. 2003
  3. ncbi request reprint Dosimetry of 3 CBCT devices for oral and maxillofacial radiology: CB Mercuray, NewTom 3G and i-CAT
    J B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, NC 27599 7450, USA
    Dentomaxillofac Radiol 35:219-26. 2006
  4. pmc Accuracy of measurements of mandibular anatomy in cone beam computed tomography images
    John B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina, Chapel Hill, NC 27599 7450, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 103:534-42. 2007
  5. ncbi request reprint Patient risk related to common dental radiographic examinations: the impact of 2007 International Commission on Radiological Protection recommendations regarding dose calculation
    John B Ludlow
    Department of Diagnostic Sciences, University of North Carolina School of Dentistry, Chapel Hill, NC 27599 7450, USA
    J Am Dent Assoc 139:1237-43. 2008
  6. doi request reprint Assessment of phantom dosimetry and image quality of i-CAT FLX cone-beam computed tomography
    John B Ludlow
    Professor, Department of Diagnostic Sciences, School of Dentistry, University of North Carolina, Chapel Hill, NC Electronic address
    Am J Orthod Dentofacial Orthop 144:802-17. 2013
  7. pmc A manufacturer's role in reducing the dose of cone beam computed tomography examinations: effect of beam filtration
    J B Ludlow
    Department of Diagnostic Sciences and General Dentistry, 1008 Tarson Hall, The University of North Carolina School of Dentistry, Chapel Hill, North Carolina 27599 7450, USA
    Dentomaxillofac Radiol 40:115-22. 2011
  8. pmc Precision of cephalometric landmark identification: cone-beam computed tomography vs conventional cephalometric views
    John B Ludlow
    Department of Diagnostic Sciences and General Dentistry, School of Dentistry, University of North Carolina, Chapel Hill, NC 27599 7450, USA
    Am J Orthod Dentofacial Orthop 136:312.e1-10; discussion 312-3. 2009
  9. doi request reprint Comparative dosimetry of dental CBCT devices and 64-slice CT for oral and maxillofacial radiology
    John B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, North Carolina 27599 7450, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 106:106-14. 2008
  10. ncbi request reprint Accuracy of measurements of mandibular anatomy and prediction of asymmetry in panoramic radiographic images
    W S Laster
    Department of Diagnostic Sciences and General Dentistry, UNC School of Dentistry, Chapel Hill, NC 27599 7450, USA
    Dentomaxillofac Radiol 34:343-9. 2005

Collaborators

Detail Information

Publications33

  1. ncbi request reprint Evaluation of tuned-aperture computed tomography in the detection of simulated periodontal defects
    Aruna Ramesh
    Division of Oral and Maxillofacial Radiology, Department of General Dentistry, Tufts University School of Dental Medicine, Boston, Mass 02111, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 93:341-9. 2002
    ..The objective of this study was to compare the diagnostic efficacy of tuned-aperture computed tomography (TACT) and conventional film for the detection of simulated periodontal defects...
  2. ncbi request reprint Dosimetry of two extraoral direct digital imaging devices: NewTom cone beam CT and Orthophos Plus DS panoramic unit
    J B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, North Carolina 27599, USA
    Dentomaxillofac Radiol 32:229-34. 2003
    ..This study provides effective dose measurements for two extraoral direct digital imaging devices, the NewTom 9000 cone beam CT (CBCT) unit and the Orthophos Plus DS panoramic unit...
  3. ncbi request reprint Dosimetry of 3 CBCT devices for oral and maxillofacial radiology: CB Mercuray, NewTom 3G and i-CAT
    J B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, NC 27599 7450, USA
    Dentomaxillofac Radiol 35:219-26. 2006
    ..This study provides comparative measurements of effective dose for three commercially available, large (12'') field-of-view (FOV), CBCT units: CB Mercuray, NewTom 3G and i-CAT...
  4. pmc Accuracy of measurements of mandibular anatomy in cone beam computed tomography images
    John B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina, Chapel Hill, NC 27599 7450, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 103:534-42. 2007
    ..Image measurements were compared with caliper measurements of the skulls...
  5. ncbi request reprint Patient risk related to common dental radiographic examinations: the impact of 2007 International Commission on Radiological Protection recommendations regarding dose calculation
    John B Ludlow
    Department of Diagnostic Sciences, University of North Carolina School of Dentistry, Chapel Hill, NC 27599 7450, USA
    J Am Dent Assoc 139:1237-43. 2008
    ..The authors conducted a study to reassess patients' risk related to common dental radiographic exposures using the 2007 ICRP recommendations...
  6. doi request reprint Assessment of phantom dosimetry and image quality of i-CAT FLX cone-beam computed tomography
    John B Ludlow
    Professor, Department of Diagnostic Sciences, School of Dentistry, University of North Carolina, Chapel Hill, NC Electronic address
    Am J Orthod Dentofacial Orthop 144:802-17. 2013
    ..An industry response to this has been to offer low-exposure alternative scanning options in newer cone-beam computed tomography models...
  7. pmc A manufacturer's role in reducing the dose of cone beam computed tomography examinations: effect of beam filtration
    J B Ludlow
    Department of Diagnostic Sciences and General Dentistry, 1008 Tarson Hall, The University of North Carolina School of Dentistry, Chapel Hill, North Carolina 27599 7450, USA
    Dentomaxillofac Radiol 40:115-22. 2011
    ..The dosimetry of the Kodak 9500 cone beam CT (CBCT) unit (Carestream Health, Rochester, NY) was measured before and after installation of copper filtration...
  8. pmc Precision of cephalometric landmark identification: cone-beam computed tomography vs conventional cephalometric views
    John B Ludlow
    Department of Diagnostic Sciences and General Dentistry, School of Dentistry, University of North Carolina, Chapel Hill, NC 27599 7450, USA
    Am J Orthod Dentofacial Orthop 136:312.e1-10; discussion 312-3. 2009
    ..In this study, we compared the precision of landmark identification using displays of multi-planar cone-beam computed tomographic (CBCT) volumes and conventional lateral cephalograms (Ceph)...
  9. doi request reprint Comparative dosimetry of dental CBCT devices and 64-slice CT for oral and maxillofacial radiology
    John B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, North Carolina 27599 7450, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 106:106-14. 2008
    ..This study compares 2 measures of effective dose, E(1990) and E(2007), for 8 dentoalveolar and maxillofacial cone-beam computerized tomography (CBCT) units and a 64-slice multidetector CT (MDCT) unit...
  10. ncbi request reprint Accuracy of measurements of mandibular anatomy and prediction of asymmetry in panoramic radiographic images
    W S Laster
    Department of Diagnostic Sciences and General Dentistry, UNC School of Dentistry, Chapel Hill, NC 27599 7450, USA
    Dentomaxillofac Radiol 34:343-9. 2005
    ..Measurements of ideally positioned and systematically mis-positioned skulls were used to evaluate errors in linear measurements and symmetry ratios made with panoramic X-ray images...
  11. ncbi request reprint A comparison of Web page and slide/tape for instruction in periapical and panoramic radiographic anatomy
    J B Ludlow
    Diagnostic Sciences and General Dentistry Department, University of North Carolina School of Dentistry, Chapel Hill 27599 7450, USA
    J Dent Educ 64:269-75. 2000
    ..While 71 percent of the students preferred WP technology, this preference appears to be related to ease of use and facilitation of flexible learning styles rather than improved didactic performance...
  12. ncbi request reprint Image-receptor performance: a comparison of Trophy RVG UI sensor and Kodak Ektaspeed Plus film
    J Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina at Chapel Hill, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 91:109-19. 2001
    ..Objective. This study compares the physical characteristics of the RVG UI sensor (RVG) with Ektaspeed Plus film...
  13. ncbi request reprint Characteristics of Kodak Insight, an F-speed intraoral film
    J B Ludlow
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina at Chapel Hill, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 91:120-9. 2001
    ..This study reports film speed, contrast, exposure latitude, resolution, and response to processing solution depletion of Kodak Insight intraoral film...
  14. ncbi request reprint Tuned aperture computed tomography and detection of recurrent caries
    M K Nair
    Department of Diagnostic Sciences, UNC CH School of Dentistry, Chapel Hill, N C 27599 7450, USA
    Caries Res 32:23-30. 1998
    ..0001). The results suggest that TACT images hold promise as a more effective imaging modality than film or direct digital systems for detection of recurrent caries...
  15. ncbi request reprint Analysis of fractal dimensions of rat bones from film and digital images
    S Pornprasertsuk
    Department of Diagnostic Sciences and General Dentistry, School of Dentistry, University of North Carolina at Chapel Hill, NC 27599-7450, USA
    Dentomaxillofac Radiol 30:179-83. 2001
    ..CONCLUSIONS: Different types of image receptors significantly affect estimates of fractal dimension. There was no difference in the fractal dimensions of the different bones but the three regions differed significantly...
  16. ncbi request reprint Performance of a new F-speed film for caries detection
    J B Ludlow
    Diagnostic Sciences and General Dentistry Department, University of North Carolina School of Dentistry, Chapel Hill 27599-7450, USA
    Dentomaxillofac Radiol 30:110-3. 2001
    ..42). CONCLUSIONS: The performance of the new F-speed film was not statistically different from E or D speed for caries detection. This film shows promise as a means of reducing patient dose while maintaining diagnostic quality...
  17. ncbi request reprint Accuracy of mandibular cross-sectional imaging with tuned- aperture computed tomography (TACT), iteratively reconstructed TACT, and multidirectional, linear, and transverse panoramic tomography
    H Liang
    Department of Diagnostic Sciences, Baylor College of Dentistry, Dallas, TX 75266 0677, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 91:594-602. 2001
    ..The modalities tested were tuned-aperture computed tomography (TACT), iteratively reconstructed TACT, multidirectional tomography, linear tomography, and transverse panoramic tomography...
  18. pmc Correlating cone beam CT results with temporomandibular joint pain of osteoarthritic origin
    G Palconet
    University of North Carolina, Chapel Hill School of Dentistry, NC 27599 7455, USA
    Dentomaxillofac Radiol 41:126-30. 2012
    ..The purpose of this study was to determine whether bony changes in temporomandibular joint (TMJ) osteoarthritis (OA) is correlated with pain and other clinical signs and symptoms...
  19. ncbi request reprint Evaluation of a new digital panoramic system: a comparison with film
    A Ramesh
    Section of Oral and Maxillofacial Radiology, Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill 27599, USA
    Dentomaxillofac Radiol 30:98-100. 2001
    ....
  20. pmc Quantification of condylar resorption in temporomandibular joint osteoarthritis
    L H S Cevidanes
    Department of Orthodontics, University of North Carolina School of Dentistry, Chapel Hill, North Carolina 27599, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 110:110-7. 2010
    ..This study was performed to determine the condylar morphologic variation of osteoarthritic (OA) and asymptomatic temporomandibular joints (TMJs) and to determine its correlation with pain intensity and duration...
  21. ncbi request reprint Comparison of conventional and cone beam CT synthesized cephalograms
    V Kumar
    Oral and Maxillofacial Radiology Program, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599 7450, USA
    Dentomaxillofac Radiol 36:263-9. 2007
    ..To compare cephalometric measurements from synthesized cone beam CT (CBCT) lateral cephalograms using orthogonal and perspective projections with those from conventional cephalometric radiographs and dry skulls...
  22. ncbi request reprint Comparison between PAI and quantitative digital radiographic assessment of apical healing after endodontic treatment
    E O Delano
    Diagnostic Sciences and General Dentistry Department, University of North Carolina, Chapel Hill, NC 27599, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 92:108-15. 2001
    ..The purpose of this study was to compare both subjective (Periapical Index, PAI) and objective (densitometric) radiographic evaluation of healing after endodontic treatment for apical periodontitis...
  23. ncbi request reprint Comparison of conventional and TACT (Tuned Aperture Computed Tomography) digital subtraction radiography in detection of pericrestal bone-gain
    Onanong Chai-U-Dom
    Department of Radiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
    J Periodontal Res 37:147-53. 2002
    ..001) and for the smallest bone mass (p = 0.024). The findings support TACT-DSR's potential to provide greater sensitivity and technique flexibility in detecting periodontal bone-gain than standard DSR...
  24. ncbi request reprint Evaluation of a bioadhesive device for the management of aphthous ulcers
    M J Kutcher
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, CB 7450 Brauer Hall, Chapel Hill, N C 27599 7450, USA
    J Am Dent Assoc 132:368-76. 2001
    ..Aphthous ulcers are common and painful. Current treatments are palliative and focused on pain reduction. This article reports on the clinical trials of a novel, bioadhesive treatment modality...
  25. ncbi request reprint Effect of data compression on proximal caries detection: observer performance with DenOptix photostimulable phosphor images
    T Pabla
    Oral and Maxillofacial Radiology, University of North Carolina, Chapel Hill, NC, USA
    Dentomaxillofac Radiol 32:45-9. 2003
    ..To study the effect of lossy image compression on caries detection. Null hypothesis states no difference in caries detection efficacy among observers using original digital images versus images compressed at various rates of compression...
  26. ncbi request reprint Fractal dimension analysis of weight-bearing bones of rats during skeletal unloading
    S Pornprasertsuk
    Department of Diagnostic Science and General Dentistry, School of Dentistry, University of North Carolina, Chapel Hill, 27599-7455, USA
    Bone 29:180-4. 2001
    ..Thus, fractal analysis could be a useful technique to evaluate the structural changes of bone...
  27. ncbi request reprint The effect of lighting conditions on caries interpretation with a laptop computer in a clinical setting
    Mark J Kutcher
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, NC 27599 7450, USA
    Oral Surg Oral Med Oral Pathol Oral Radiol Endod 102:537-43. 2006
    ..To test the null hypothesis of no difference in caries detection in dim, bright, and hooded environments for laptop viewing of intraoral radiographs...
  28. ncbi request reprint Interactive computer-assisted instruction vs. lecture format in dental education
    W Bruce Howerton
    Department of Diagnostic Sciences and General Dentistry, University of North Carolina School of Dentistry, Chapel Hill, USA
    J Dent Hyg 78:10. 2004
    ..A pre- and post-test was used to determine student performance and instructional preference. In addition, a post-instruction survey was used to determine student learning preferences...
  29. ncbi request reprint Tuned aperture computed tomography (TACT) for cross-sectional implant site assessment in the posterior mandible
    Behnoush Rashedi
    Department of Restorative Dentistry, School of Dental Medicine, University of Pennsylvania, 4001 Spruce Street, Philadelphia, PA 19104 6003, USA
    J Prosthodont 12:176-86. 2003
    ..This study was designed to optimize a new radiographic modality known as tuned aperture computed tomography (TACT) for cross-sectional imaging of implant sites in human dry mandibles...
  30. ncbi request reprint Resolution of digitized intraoral dental films
    John B Ludlow
    Dentomaxillofac Radiol 33:208; author reply 208-9. 2004
  31. ncbi request reprint Pre-clinical performance comparing intraoral film and CCD-based systems
    Tracey Malarkey Sommers
    Lorain County Community College, Elyria, Ohio, USA
    J Dent Hyg 76:26-33. 2002
    ..Specific objectives were to compare the 1) number of technique errors, 2) error type, 3) retake frequency, and 4) learning experience using both systems...
  32. ncbi request reprint Proximal caries detection: Sirona Sidexis versus Kodak Ektaspeed Plus
    Emad A Khan
    Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
    Gen Dent 53:43-8. 2005
    ..Areas under ROC curves (Az) were assessed through a paired t-test. The performance of the CCD-based intraoral sensor was not different statistically from Ektaspeed Plus film in detecting proximal caries...
  33. ncbi request reprint A comparison of slide/audiotape and Web-based instructional formats for teaching normal intraoral radiographic anatomy
    Deborah E Fleming
    Department of Dental Hygiene, Baltimore College of Dental Surgery, University of Maryland, Baltimore, USA
    J Dent Hyg 77:27-35. 2003
    ..The purpose of this study was to evaluate the relationship between individual learning styles, test performance, and attitudes toward the use of Web-based self-instruction and slide/audiotape self-instruction..