Quantcast
Skip to main content
Department of Otolaryngology

Department of Otolaryngology

Rebecca J. Leonard, Ph.D.


Professor Emeritus
Voice and Swallowing
UC Davis Health System
Department of Otolaryngology
2521 Stockton Blvd., Suite 7200


Dr. Leonard's primary clinical interests are in the areas of voice and swallowing. She is one of a growing number of professionals in the field who has extended her scope of practice to include laryngeal imaging, stroboscopy, and other instrumental methods, and who, with an otolaryngologist, combine to form a specialty practice in laryngology/voice/swallowing. Dr. Leonard has been a vocal proponent at state and national levels for the development of standards of practice and training pertinent to this emerging specialty area. 

Research interests include normal and disordered swallowing, changes in swallowing across the life span, aversive effects on the larynx and voice associated with environmental stimuli and the effects of ablative procedures on voice, speech and swallowing.  She is a Fellow of the American Speech-Language-Hearing Association.

Education

1976 Ph.D., Purdue University, West Lafayette, Indiana
Major: Speech Pathology/Speech Sciences 
 
1972    M.S., Purdue University, West Lafayette, Indiana
Major: Speech Pathology
 
1967 A.B., Indiana University, Bloomington, Indiana
Major: Speech Pathology

Board Certification

  • American Speech, Language and Hearing Association Certification of Clinical Competence in Speech Pathology, 1979

Professional Societies

California Speech, Language and Hearing Association

American Speech, Language and Hearing Association

Dysphagia Research Society

Voice Foundation

Publications

Dr. Leonard has authored or co-authored 2 books, 2 manuals and numerous chapters in professional texts. She is a reviewer for a number of professional journals. Publications include:

2008 - Aminpour S, Fuller S, Leonard R, Belafsky PC. Pharyngeal wall thickness in young and elderly normal subjects. Otolaryngology - Head and Neck Surgery, 139: 140-41.

2008 - Belafsky PC, Mouadeb DA, Rees CJ, Pryor JC, Postma GN, Allen J, Leonard RJ. Validity and reliability of the Eating Assessment Tool (EAT-10). Ann Otol Rhinol Laryngol, 117(12): 919-24.

2008 - Leonard R, McKenzie S, Belafsky P.  Pharyngeal adaptation in Zenker’s diverticulum --  the “Faux-PES.” Submitted, Otolaryngol Head NeckSurg.  2008.

2007 - Leonard R and Kendall KA. (eds) Dysphagia Assessment and Treatment Planning (2nd ed.), Plural Publishing, Co.: San Diego, CA.,. 

2007 - Leonard R, Belafsky PC, Rees CJ.  Relationship between fluoroscopic and manometric measures of pharyngeal constriction:  the pharyngeal constriction ratio. Ann. Otol. Rhinol. Laryngol. 2007 115:897-901.

2007 - Blumenfeld L, Hahn Y, Lepage A, Leonard R, Belafsky PC.  Transcutaneous electrical stimulation versus traditional dysphagia therapy: A nonconcurrent cohort study.  Otolaryngol. Head Neck Surg. 2006  135, 754-757.

2006 - Leonard R, McKenzie S, Hyoid –bolus transit latencies in normal swallow. Dysphagia, 2006  32:183-190.

2006 - Yip H, Leonard R, Belafsky PC. Can a fluoroscopic estimation of pharyngeal constriction predict aspiration? Otolayngol. Head Neck Surg. 2006 135:215-217.

2006 - Yip HT, Leonard R, Kendall K.  Impact of vocal fold medialization on pharyngeal transit time and incidence of aspiration.  Ann. Otology, Rhinology & Laryngology, in press.

2006 - Yip HT, Leonard R, Kendall K.  Cricopharyngeal myotomy normalizes the opening size of the upper esophageal sphincter in cricopharyngeal dysfunction.  Ann. Otology, Rhinology & Laryngology,  116:93-96.

2005 - Leonard R, Kendall K.  Effects of voice therapy on vocal process granuloma – A Phonoscopic Approach.  Am. J. Otolaryngology, 2005  26:  101-107.

2005 - Andrews M, Bless D, Boone, et al.  Classification manual for voice disorders. Lawrence Erlebaum Associates, Mahwah, NJ, in press.

2005 - Colton R, Casper J, Leonard R: Understanding voice problems, 3rd Edition, Lippincott Williams and Wilkins, Philadelphia, PA, in press.

2005 - Yip HT, Leonard R, Kendall K.  Impact of vocal fold medialization on pharyngeal transit time and incidence of aspiration.  Ann. Otology, Rhinology & Laryngology, in press.

2005 -  Yip HT, Leonard R, Kendall K.  Cricopharyngeal myotomy normalizes the opening size of the upper esophageal sphincter in cricopharyngeal dysfunction.  Ann. Otology, Rhinology & Laryngology, in press.

2005 - Leonard R, McKenzie S, Hyoid -bolus transit latencies in normal swallow. Dysphagia, Submitted.

2004 - Kendall KA, Leonard R, McKenzie S. Airway protection: evaluation with videofluoroscopy. Dysphagia, 2004 19(2): 65-70.

2004 - Kendall K, Leonard R, McKenzie S. Common medical conditions in the elderly: impact of pharyngeal bolus transit.  Dysphagia, 2004 19(2): 71-77

2004 - Leonard R, Kendall K, McKenzie S:  Structural displacements affecting pharyngeal constriction in nondysphagic elderly and nonelderly adults.  Dysphagia, 2004 19(2): 133-141.

2004 - Leonard R, Kendall K, McKenzie S:  UES opening and cricopharyngeal bar in nondysphagic elderly and nonelderly adults.  Dysphagia, 2004 19(3):  182-191.

2004 - Leonard R, Kendall K.  Effects of voice therapy on vocal process granuloma - A Phonoscopic Approach.  Am. J. Otolaryngology, in press.

2003 - Kendall K, Leonard R, McKenzie S: "Sequence variability during hypopharyngeal bolus transit". Dysphagia. 2003 Spring; 18(2): 85-91.

2002 - Kendall K, Leonard R: Videofluoroscopic upper esophageal sphincter function in elderly dysphagic patients. Laryngoscope.  2002 Feb;112(2):332-7.

2002 - Leonard R, Dworkin J, Meleca R, Colton R, Leeper, HA, Till J: "Assessment of the disordered voice: A roundtable discussion". Journal of Medical Speech-Language Pathology. 2002 10(2);  111-131.

2001 - Kendall K, Leonard R, McKenzie SW: "Accommodation to changes in bolus viscosity in normal deglutition: A videofluoroscopic study."  Annals of Otology, Rhinology & Laryngology. 2001 Nov; 110(11): 1059-65.

2001 - Kendall K, Leonard R: "Bolus transit and airway protection coordination in older dysphagic patients." Laryngoscope. 2001 Nov; 111 (11 Pt 1): 2017-21.

2001 - Leonard R, "Ablative procedures of the head and neck: implications for speech and swallowing." Chapter  in: Donald P. Head and Neck Cancer: Management of the Difficult Case. W.B.Saunders Co., Philadelphia, PA, in press.

2001 - Kendall K, Leonard R: "Hyoid movement during swallowing in older patients with dysphagia."  Archives of Otolaryngology, 127: 1224-1229.

2001 - Leonard R, Kendall K: "Phonoscopy-a valuable tool for otolaryngologists and speech-language pathologists in the management of dysphonic patients." Laryngoscope, 111(10): 1761-1767.

2000 - Kendall K, Leonard R: "Pharyngeal constriction in dysphagic elderly patients."  Dysphagia, 16(4): 272-278.

2000 - Leonard R, Kendall K, Johnson R, McKenzie S: "Swallowing in myotonic muscular dystrophy:  A videofluoroscopic study."  Archives of Physical Medicine and Rehabilitation, 82(7): 979-985.

2000 - Leonard R, Kendall K, McKenzie S, Goncalves MI, Walker A: "Structural displacements in normal swallowing:  A videofluoroscopic study."  Dysphagia, 15: 146-152.

2000 - Kendall K, McKenzie S, Leonard R, Goncalves MI, Walker: "Timing of events in normal swallowing:  A videofluoroscopic study."   Dysphagia, 15: 74-83.

2000 - Kendall K, McKenzie S, Leonard R: "Timing of swallowing events after single modality treatment of head and neck carcinomas with radiation therapy."  Annals of Otology, Rhinology & Laryngology, 109(8): 767-775.

1999 - Leonard R: "'Functional' dysphonia in a 63-year-old male."  Phonoscope  2:(1)  59-72.

1999-Burnett G, Leonard R: "Use of Kodak EktaPro high speed digital cameras in laryngoscopy."  Phonoscope 2:(1) 33-40.

1999 - Leonard R, Kendall K: "Dysphagia secondary to cricopharyngeal achalasia."  Phonoscope  2:(2) 123-128.

1999 - Leonard R: "Dysphagia secondary to cricopharyngeal achalasia and CVA."  Phonoscope  2:(3) 167-173.

1999 - Kendall K, Leonard R: "Dysphagia: Recent advances in assessment and treatment."  Current Opinion in Otolaryngology and Head and Neck Surgery. 7:107-111.

1999 - Leonard R: "Voice therapy:  Objectives and outcomes."  Phonoscope.  2:(4) 217-226.

1999 - Leonard R, Kendall K: "Differentiation of spasmodic and psychogenic dysphonias with phonoscopic evaluation."  Laryngoscope. 109: 295-300.

1998 - Leonard R, Goncalves M: "Speech rehabilitation post-glossectomy."   Chapter in Robbins T and Murry T. Head and Neck Cancer: Organ Preservation, Function, and Rehabilitation. Singular Publishing Group, Inc., San Diego.

1998 - Goncalves M, Leonard R:  "A hardware-software system for analysis of video images."  J Voice, 12:(2) 143-150.

1998 - Leonard R: "Dysphagia secondary to shunt malfunction with uncal herniation in 13-year-old male with cerebral palsy and hydrocephalus."  Phonoscope.  1:(1)  83-85.

1998 - Leonard R: "Complications resulting from botulinum toxin injection in a 43-year-old female with  abductor spasmodic dysphonia."  Phonoscope. 1:(2) 151-154.

1998 - Leonard R: "Graphic display of quantitative data from videofluoroscopic swallow studies -  STD plots (swallow time-displacement-duration plot)."  Phonoscope. 1:(3) 219-224.

1998 - Leonard R: "Muscular dystrophy with initial complaint of dysphagia."  Phonoscope. 1:(3) 229-235.

1998 - Leonard R: "Stimulus generator: A computerized tool for voice therapy."  Phonoscope. 1:(4) 265-272.

1998 - Kendall K, McKenzie S, Leonard R: "Structural mobility in deglutition after single modality treatment of head and neck carcinomas with radiation therapy."  Head and Neck. 20:(8) 720-725.

1997 - Kendall K, Leonard R: "Treatment of ventricular dysphonia with botulinum toxin." Laryngoscope. 107(7) 948-53.

1997 - Leonard R, Kendall K, eds. Dysphagia Assessment and Treatment Planning: A Team Approach. Singular Publishing Group, Inc, San Diego, Ca.   Also author or co-author of the following chapters:  Introduction;  Dynamic swallow study: Objective measures and normative data., Chapter 8, 101-125; Dynamic swallow study: Instrumentation and measurement techniques. Chapter 9, 127-160; Swallow evaluation with flexible videoendoscopy, Chapter 10,161-180; The treatment plan; Chapter 11, 181-210; Appendix: CD-ROM.

1996 - Leonard R, Izdebski, K: "Preoperative voice therapy:  Indications, basis, strategies."  In Elsevier Science Series, Proceedings of the First World Voice Congress, Oporto, Portugal.

1996 - Leonard R, Izdebski K: "Laryngeal imaging with stroboscopy: Its value in therapeutic assessment." Elsevier Science Series, Proceedings of the First World Voice Congress, Oporto, Portugal.

1995 - Leonard, R.: "Speech characteristics in speakers with glossectomy and other  oral/oropharyngeal ablation."  Chapter in Bernthal J:  Child Phonology:  Characteristics, Assessments, and Intervention with Special Populations.  Thieme Medical Publishers, New York.

1995 - Leonard R, Charpied G, Faddis B: "Effects of chronic ozone (03) on vocal fold mucosa in primates."  J Voice.  9:(4) 433-448.

1994 - Leonard, R,  Poza T:  Soundscope - Manual of Clinical Applications.  Published by G.W. Instruments, Inc., Somerville, MA.

1992 - Sievers A, Leonard R, McKenzie S: "The safe use of an adaptive early feeding device for impaired patients."  ORL-Head & Neck Nursing. 10:17.

1992 - Loeb R, Jones B, Leonard R,  Behrman K: "Recognition accuracy of current operating room alarms."  Anesth Analg. 75:499-505.

1992 - Leonard R, Goodrich S, McMenamin P, Donald P: "Differentiation of speakers with glossectomies by acoustic and perceptual measures."  American Journal of Speech-Language Pathology--" Journal of Clinical Practice. 1:(2) 56-62.

1992 - Leonard R: "Use of laryngeal imaging procedures."  "ASHA" (J Am Speech Lang Hearing Assoc) 34:(5) 69-71.

1992 - Leonard, R, Senders C,  Charpied, G: "Effects of long-term intubation on vocal fold mucosa in dogs."  J Voice. 6:(1) 86-93.

1991 - Leonard R, Charpied G, Gallia, L: "Recovery of vocal fold mucosa from laser incision."   J Voice. 6: (3) 286-291.

1991 - Leonard R, Charpied G, Faddis B: "Effects of ambient inhaled ozone on vocal fold mucosa in bonnet monkeys."  J Voice.  5:(4) 304-309.

1991 - McKenna J, Fonataro-Clerici L, McMenamin P, Leonard R.: "Laryngeal cancer:  Diagnosis, treatment and speech rehabilitation."  Am Fam Physician. 44:(1) 125-129.

1991 - Leonard R: "Computerized design of speech prostheses."  J Prosth Dentistry.  66:(2) 224-230.

1990 - Leonard R,  Gillis R: "Differential effects of speech prostheses in glossectomized patients."  J. Prosth Dentistry.  64:(6) 701-708.

1990 - Leonard R, Poza T: MacSpeech Lab - Manual of Clinical Applications G.W. Instruments: Cambridge, MA.

1988 - Leonard R, Ringel R, Horii Y,  Daniloff R: "Vocal shadowing in singers and nonsingers."  J Speech and Hearing Res.  31: 54-61.

1988 - Leonard R, Gallia L, Charpied G: "Effects of stripping and laser excisions on vocal fold mucosa in cats."  Ann Otol Rhinol and Laryngol.  97:159-163.

1988 - Leonard R: "Communication disorders in childhood.  Chapter in Hudson W, Reinhard M: Manual of Preventative Services. Little, Brown & Co., Boston, MA.

1987 - Leonard R,  Ringel R., Daniloff R, Horii Y: "Voice frequency change in singers and non-singers."  J Voice. 1:234-239.

1985 - Leonard R, Kiener D, Charpied G: "Effects of repeated stripping on vocal fold mucosa in cats."  Ann Otol Rhinol and Laryngol.  3:258-262.

1984 - Leonard, R: "Problems in speech rehabilitation of patients with head and neck cancer."  Chapter in: Donald, PJ, Head and Neck Cancer Management of Difficult Case.  W.B. Saunders Company, Philadelphia.

1983 - Gillis R, Leonard R: "Prosthetic treatment for speech and swallowing in patients with  total glossectomy."  J. Prosth Dentistry. 50:(6) 808-814.

1983 - Leonard R, Gillis R: "Effects of a prosthetic tongue on vowel formants and isovowel lines in a patient with total glossectomy."  J. Speech and Hearing Disorders.  48:(4)  423-426.

1982 - Leonard R, Gillis R: "Effects of a prosthetic tongue on vowel intelligibility and food management in a patient with total glossectomy."  J. Speech and Hearing Disorders. 47: 25-30.

1980 - Sorenson D, Horii Y, Leonard R: "Effects of laryngeal topical anesthesia on voice fundamental frequency perturbation."   J Speech and Hearing Res. 23: 274-283.

1979 - Leonard R, Ringel R:  "Vocal shadowing under conditions of normal and altered laryngeal sensation."  J Speech and Hearing Res.  23: 274-281.

1975 - Leonard R, Brown R, Ringel R:  "Hall probes applied to the measurement of articulatory dynamics."  Purdue University Contributed Papers.  5: 94-102.

1975 - Leonard R, Horii Y, Daniloff R: "Vocal shadowing of square wave modulated tones."   Purdue University Contributed Papers.  5: 63-114.

Presentations

2010 - "March, Comparison of esophageal screen findings on videlfluoroscopy with full esophagram results, Dysphagia Research Society Annual Meeting, San Diego, CA. "

2009 - "March, Dysphagia severity and aspiration risks: Head and neck cancer, CVA, neurogenic disease, Dysphagia Research Society Annual Meeting, New Orleans, LA. "

2008 - "March, Dysphagia following c-spine surgery with hardware stabilization, Dysphagia Research Society Annual Meeting, Charleston, SC. "

2007 - "January, Principles of stroboscopy, Lecture presented at UCDMC ENT Grand Rounds. "

2007 - "April, Evaluation of dysphagia in pediatrics, Lecture, 2nd Annual Advanced Practices in Dysphagia Assessment and Treatment, Las Vegas, NV. "

2007 - "April, Dynamic fluoroscopic swallow study, Lecture, 2nd Annual Advanced Practices in Dysphagia Assessment and Treatment, Las Vegas, NV. "

2007 - "May, Dysphagia assessment and treatment--making te right choices., Workshop, Minneapolis Speech Pathologists in Medical Practice. "

2007 - "June, Dynamic fluoroscopic swallow study, Lecture, UCDMC ENT Grand Rounds. "

2007 - "October, Why technology is not always good, presented at XVI Annual PVSF/UCLA Conference, Technology and Controversies in Cliical Voice Care, Los Angeles, CA. "

2006 - "March, Dysphagia assessment, Lecture presented at UCDMC Hospitalists Grand Rounds, Sacramento, CA. "

2006 - "April, Behavioral strategies in dysphagia management, Lecture presented at 1st Annual Advanced Practices in Dysphagia Assessment and Treatment, Las Vegas, NV. "

2006 - "April, Dynamic fluoroscopic swallow study, Lecture presented at 1st Annual Advanced Practices in Dysphagia Assessment and Treatment, Las Vegas, NV. 2006 April, From lips to cricopharyngeue, Lecture presented at 1st Annual Advanced Practices in Dysphagia Assessment and Treatment, Las Vegas, NV."

2006 - "June, Current and emerging practices in SLP management of voice disorders, Workshop presented at the University of the Pacific, Stockton, CA. "

2006 - "August, Stroboscopy principles and applications, Seminar presented at the Bangor Regional Medical Center, Bangor, ME. "

2005 - "May, Principles of stroboscopy, Workshop presented at the Spoleto Symposium: The Art and Science of Voice and Swallowing Disorders. "

2005 - "May, Relevance of phonatory function measures, Lecture presented at the Spoleto Symposium: The Art and Science of Voice and Swallowing Disorders. "

2005 - "May, Voice therapy techniques, Workshop presented at the Spoleto Symposium: The Art and Science of Voice and Swallowing Disorders. "

2005 - "October, Voice therapy in the management of vocal process granuloma, Invited presentation for the Minneapolis Medical Speech Pathologists, Minneapolis, MN. "

2005 - "November, Dynamic swallow studies: Clinical utility of selected objective measures, Short course presented at the annual meeting of the American Speech-Language-Hearing Association, San Diego, CA. "

2005 - "December, Dynamic fluoroscopic swallow study, Lecture presented at UCDMC GI Grand Rounds, Sacramento, CA. "

2004 - "April, Dynamic fluoroscopic swallow studies: Clinical utility of selected objective measures, Short course presented for Medical Speech Pathology Council of California. "

2004 - "October, Leonard R. UES opening and CP bar in healthy non-elderly and elderly adults., Paper presented at the Dysphagia Research Society annual meeting, San Francisco, California.. "

2004 - "October, Speech rehabilitation in oral and oropharyngeal cancer, Short course presented at Milton Dance Head and Neck Cancer Center 5th Symposium, Baltimore, MD. "

2003 - "October, Leonard R. Pharyngeal dimensions in healthy non-elderly adults, Lecture presented at the Dysphagia Research Society annual meeting, Miami,Florida.. "

2002 - "August, Leonard R. Stroboscopy - an overview, Lecture presented at the UC Davis Department of otolaryngology/Head and Neck Surgery, Grand Rounds.."

2000 - "November, Leonard R. Occupational Disability and Voice - A Need for Revised Practices, Lecture presented at the Pacific Voice Conference, San Francisco, California.. "

2000 - "November, Leonard R. Phonatory function Measures-Intrasubject Reliability, Lecture presented at the Pacific Voice Conference, San Francisco, California.. "

1999 - "February, Leonard R. Flexible endoscopy in the voice and dysphagia, Lecture presented at 2nd World Voice Congress, Sao Paolo, Brazil.."

1999 - "February, Leonard R. Conservative treatment in benign lesions of the true vocal folds, Lecture presented at 2nd World Voice Congress, Sao Paolo, Brazil.."

1999 - "November, Leonard R, Kendall K, McKenzie S. Quantitative dynamic swallow studies: Value in assessment and treatment, Extended seminar presented at American Speech, Language and Hearing Association Annual Convention, San Francisco, California. (Abstract appears in convention summary). "

1998 - "November, Casper J, Colton R and Leonard R. A case presentation approach to understanding voice disorders, Extended seminar presented at American Speech, Language and Hearing Association Annual Convention, San Antonio, Texas. (Abstract appears in convention summary).."

1998 - "November, Kendall K, Leonard R, Cruz R, Dedo H and Izdebski K. Intraoperative monitoring of glottic procedures using phonoscopy and electromyography, Paper presented at the XI Annual Pacific Voice Conference, San Francisco, California.."

1997 - "September, Kendall K and Leonard R. Effectiveness of GERD management in the treatment of chronic laryngitis, Pacific Voice Conference, San Francisco, California.."

1997 - "October, Kendall K, McKenzie S, Leonard R and Jones C. Swallowing parameters after single modality treatment of head and neck carcinomas with radiation therapy, Poster. Sixth Annual Dysphagia Research Society meeting, Toronto, Canada.."

1996 - "April, Leonard R. Speech rehabilitation post-glossectomy, Presented at the Second Mid-South Head and Neck Cancer Conference, Memphis, Tennessee.."

1996 - "October, Kendall K and Leonard R. Treatment options for ventricular dysphonias, Presented at the Pacific Voice Conference, San Francisco, California.."

1996 - "October, Leonard R and Izdebski K. Voice therapy goals and measured outcomes, Presented at the Pacific Voice Conference, San Francisco, California.."

1996 - "December, Burnett G, Holzrichter J, Ng L, Leonard R, and Lea W. Micropower radar measurements of human vocal articulator motions, Third Joint Meeting of the Acoustical Society of America and Acoustical Society of Japan, Honolulu, Hawaii.."

1995 - "March, Leonard R. Prosthetic appliances for speech and swallowing, Presented at the First Mid-South Head and Neck Cancer Conference: Oral, Pharyngeal, and Laryngeal Cancer, Memphis, Tennessee.."

1995 - "April, Leonard R and Izdebski K. Physiologic basis for choosing between pre-and post operative voice therapy, Presented at 1st World Voice Congress, Oporto, Portugal.."

1995 - "April, Leonard R. Laryngovideostroboscopy: Its value in therapeutic assessment, Presented at 1st World Voice Congress, Oporto, Portugal.."

1995 - "April, Leonard R and Woo P. Laryngovideostroboscopy, Presented at 1st World Voice Congress, Oporto, Portugal.."

1995 - "October, Kendall K and Leonard R. Treatment of hyperfunctional postures in the supraglottis with Botox and Voice Therapy, Presented at the Pacific Voice Conference, San Francisco, California.."

1995 - "October, Leonard R and Izdebski K. Challenging dysphonias: Voice therapy approaches, Presented at the Pacific Voice Conference, San Francisco, California.."

1994 - "October, Leonard R. Phonatory function: Premalignant to malignant, Paper presented at the Pacific Voice Conference, San Francisco, California.."

1994 - "November, Leonard R. Clinical instrumentation for Macintosh computers, Mini-seminar presented at the American Speech Language Hearing Association Annual Convention, New Orleans, Louisiana. (Abstract appears in convention summary.)."

1992 - "October, Leonard R. When and why instrumentation makes a difference in differential diagnosis of psychogenic vs neurogenic dysphonias, Paper presented at the Pacific Voice Conference, San Francisco, California.."

1991 - "October, Leonard R. Effects of vocal fold paralysis on phonatory function and voice, Paper presented at the Pacific Voice Conference, San Francisco, California.."

1991 - "November, Leonard R. Laryngeal paralysis - results of voice therapy, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association, Atlanta, Georgia. (Abstract appears in convention summary.)."

1990 - "June, Leonard R. Ozone effects on neural and epithelial components of vocal fold mucosa, Paper presented at symposium on Care of the Professional Voice, Philadelphia, Pennsylvania.."

1990 - "October, Leonard R. Pediatric larynx - relating growth to voice, Paper presented at the Pacific Voice Conference, San Francisco, California.."

1990 - "November, Leonard R. Effects of ambient ozone on vocal fold mucosa in bonnet monkeys, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association, Seattle, Washington. (Abstract appears in convention summary.)."

1989 - "October, Leonard R. Effects of CO2 laser on vocal fold mucosa in cats, Paper presented at the Pacific voice Conference, San Francisco, California.."

1989 - "November, Leonard R. Differentiation of glossectomized speakers, Papers presented at the Annual Convention of the American Speech, Language and hearing Association, St. Louis, Missouri. (Abstract appears in convention summary).."

1988 - "July, Leonard R and Donald P. Differentiation of glossectomees by perceptual and acoustic measures, Paper presented at the Second International Conference of Head and Neck Cancer. Boston, Massachusetts.."

1986 - "June, Leonard R. Vocal frequency shadowing in trained singers and non-singers, Paper presented at the Voice Foundation Symposium, Julliard School, New York, New York.."

1985 - "November, Leonard R. Differentiation of glossectomized speakers by acoustic and perceptual measures, Paper presented at the Annual Convention of the American Speech, language and Hearing Association, Washington, D.C. (Abstract appears in convention summary.)."

1984 - "November, Leonard R. Effects of stripping vs. laser excision on vocal fold mucosa, Paper presented at the Annual Convention of American Speech, Language and Hearing Association, San Francisco, California. (Abstract appears in convention summary.)."

1983 - "September, Leonard R. Articulation and the oral cavity, Lecture presented at the California Speech, Language and Hearing Association Regional Meeting, Lake Tahoe, California.."

1983 - "November, Leonard R. Effects of repeated vocal fold stripping, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association, Cincinnati, Ohio. (Abstract appears in convention summary).."

1982 - "November, Leonard R. Vowel formants in a glossectomy speaker with and without a prosthetic tongue, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association, Toronto, Canada. (Abstract appears in convention summary)."

1981 - "November, Leonard R. and Horii Y. Accelerometric analyses of children with velopharyngeal incompetence, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association, Los Angeles, California. (Abstract appears in convention summary).."

1981 - "November, Centerwall W. Chinn T, Donald P and Leonard R. The team approach to craniofacial problems, Panel presentation, Pediatric surgery of the Head and Neck: A Frontier Symposium. Institute of Medical Education and Research, Napa, California.."

1980 - "October, Gillis R and Leonard R. Prosthetic tongue design to facilitate speech and swallowing in a patient with total glossectomy, Paper presented at the Annual Academy of Maxillofacial prosthetics, San Antonio, Texas.."

1978 - "November, Sorenson D, Horii Y, and Leonard R. Jitter ratios in anesthetized larynges, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association, San Francisco, California. (An abstract appears in the 1978 Convention Program Summary).."

1975 - "November, Leonard R, Brown R, and Ringel R. Hall probes applied to the measurement of articulatory dynamics, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association, Washington, D.C. (An abstract appears in the 1975 Convention Program Summary.)."

1975 - "November, Leonard R, Horii Y, and Daniloff R. Vocal shadowing of square wave modulated tones, Paper presented at the Annual Convention of the American Speech, Language and Hearing Association,Washington, D.C. (An abstract appears in the 1975 Convention Program Summary).."

Location:

Department of Otolaryngology - Head and Neck Surgery

Mailing address:

2521 Stockton Blvd., Suite 5200
Sacramento, CA 95817

Cleft Lip/Palate:

(916) 734-2452

Audiology & Speech Appointments:

(916) 734-5400

Facial Plastic Surgery Appointments:

(916) 734-2347

Dental Appointments:

(916) 734-5429

Academic Office:

(916) 734-2801

Clinic Appointments:

(916) 734-5400