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Methods have recently been developed for using standard linear accelerators to perform stereotactic radiosurgery. The accuracy necessary to perform this procedure requires an intensive quality assurance program to encompass all aspects of dose calibration and mechanical integrity of the treatment unit, the treatment planning process, and treatment delivery.… (More)
Although bariatric surgery can be an appropriate treatment option for extremely obese patients, uncertainty exists as to how to optimize treatment outcomes. This article describes a coordinated multidisciplinary program designed to educate and behaviorally prepare patients for bariatric surgery and to support long-term behavioral change.Key aspects of our… (More)
Randomized clinical trials are an accepted form of experimentation on human subjects to determine the effectiveness of new treatment regimens or drugs. The Declaration of Helsinki, adopted by the World Medical Association, has established guidelines to safeguard humans used as subjects in medical experimentation. The ethical issues of informed consent, the… (More)
When radiation treatment is delivered to adjacent or contiguous tumor volumes with multiple fields, the geometric alignment of the beams is particularly critical. A beam alignment device has been developed that enables precise matching of such fields.
The "hanging block technique" is an exacting and demanding technique that meets the requirements for dose homogeneity in the treatment volume with maximal sparing of normal tissues. We have found the technique to be reproducible and it appears to avoid the matchline problems associated with the traditional three-field technique.
Archaeologists have shown that ancient man developed the ability to produce cutting blades of an extreme degree of sharpness from volcanic glass. The finest of these prismatic blades were produced in Mesoamerica about 2,500 years ago. The technique of production of these blades was rediscovered 12 years ago by Dr. Don Crabtree, who suggested possible uses… (More)
The shortage of radiation therapy technologists continues to be a national problem. Data regarding the population who enter the profession, as well as the professional expectations and factors leading to job satisfaction of therapy technologists, need to be determined before effective recruitment and retention strategies can be developed. This article… (More)