The present study examined acoustic, aerodynamic, and videostroboscopic measures of voice production following BOTOX injections in 4 patients with Adductor Spasmodic Dysphonia. Videostroboscopic measures showed a return to some normal aspects of vocal fold vibration 1 month post-injection. Several subjects exhibited suggested meaningful differences both one week and one month post-injection for acoustic and aerodynamic measures; however, results were highly variable and often did not bring the subjects' values into the normal range.
From 1816 to 1950 it is estimated that between 1,100 to 1,500 manufactured gas plants existed in the United States. These plants produced approximately 15 trillion cubic feet of gas resulting in the production of 11 billion gallons of by-product tars (Eng, 1985). These plant sites have largely been forgotten due to the passage of time and many are still unlocated. Due to the large number former gas plants sites and the amount of waste they represent, these plants sites are one of the largest generic sources of wastes in the United States (Eng, 1985).
In the 1990's the incidence of eating disorders among college aged females had increased (Johnston & Christropher, 1991) with specific concern for female college athletes. A 1992 NCAA study found that 70% of responding institutions reported at least one case of an eating disorder with the highest prevalence in gymnastics, cross country, swimming, and track (Dick, 1993).
This thesis presents detailed calculations of the dosage to the metaphyses of the distal femur and proximal tibia and fibula of two children, ages 4 and 13. Parameters studied for each child include: mass and dimensions of the growth plate area; effective half-life and cumulated activity for 99mTc-EHDP; and mean dose per unit cumulated activity for the disc geometry of the metaphyses. Consideration is given to the use of the gamma camera for conjugate view counting. The effects of source to collimator distance, source length, and absorber thickness on the absolute count rate are evaluated. In addition, S factors for the various radionuclides have been calculated for spheres and ellipsoids of masses down to one gram.