8/6/2013· Medical - Medicine
By: Michael Gossman
Cochlear implants, via direct electrical stimulation of the auditory nerve, allow the restoration of hearing and speech recognition in both adults and children having sensorineural deafness. These devices typically contain both extemal components (speech processor, microphone, transmitter) and intemal components (including the cochlear stimulator and electrode array), which are surgically placed under the skin behind the ear and in the cochlea.
6/28/2013· Medical - Medicine
Evaluation of a Ventricular Assist Device: Stability Under X-Rays and Therapeutic Beam Attenuation
By: Michael Gossman
Improved outcomes and quality of life of heart failure patients have been reported with the use of left ventricular assist devices (LVADs).
7/18/2013· Radiology
Evaluation of a Ventricular Assist Device: Stability in a Proton Beam Therapy
By: Michael Gossman
Inadequate research exists regarding testing of a ventricular assist device (VAD) for susceptibility to radiation damage. Specifically, minimal data are available to radiation oncologists prescribing treatment plans for patients with an implanted VAD. As the number of implanted devices increases, patients requiring radiation at tissue sites near or at the device will increase.
1/8/2013· Radiology
Planning Dosimetry Near Vascular Ports
By: Michael Gossman
New research shows the effects of electron beams on implanted vascular access ports composed of plastic, determining how they impair the fluence of radiation around them.
10/23/2012· Radiology
Effects on Radiation Oncology Treatments Involving Various Neuromodulation Devices
By: Michael Gossman
Abstract. Object: Where no society-based or manufacturer guidance on radiation limits to neuromodulation devices is available, this research provides the groundwork for neurosurgeons and radiation oncologists who rely on the computerized treatment plan clinically for cancer patients.
7/25/2012· Medical Physics
By: Michael Gossman, MS, DABR, RSO
Abstract-The medical community is advocating for progressive improvement in the design of implantable cardioverter-defibrillators and implantable pacemakers to accommodate elevations in dose limitation criteria.
5/14/2012· Radiology
Radiation Therapy in Cochlear Implant Recipients
By: Michael Gossman, MS, DABR, RSO
Since the first commercial multichannel cochlear implant was marketed by Cochlear in 1985 (1), use of the device has grown exponentially. As of mid-2010, more than 188,000 people worldwide have received a cochlear implant system (2). Recent developments in the manufacturing of cochlear implants by the market leader, Cochlear Limited (based in Australia), have resulted in an aim to provide electronically stable models (3).
3/13/2012· Medical Physics
Providing Solid Angle Formalism for Skyshine Calculation
By: Michael Gossman, MS, DABR, RSO, et al
We detail, derive and correct the technical use of the solid angle variable identified in formal guidance that relates skyshine calculations to dose-equivalent rate.
1/2/2010· Medical Physics
By: Michael Gossman, MS, DABR, RSO, et al
Recent improvements to the functionality and stability of implantable pacemakers and cardioverter-defibrillators involve changes that include efficient battery power consumption and radiation hardened electrical circuits. Manufacturers have also pursued MRI-compatibility for these devices
1/3/2010· Medical Physics
By: Michael Gossman, MS, DABR, RSO, et al
As promulgated by the Nuclear Regulatory Commission, packaging regulations for radioactive material are confusing (e.g., “activity” vs “contained” activity vs “total” activity). As a consequence, medical physicists are forced to secondguess the intent of the regulations.
Forensic Psychiatrist and Med-Legal Consultant
Sanjay G. Adhia, M.D., Forensic Psychiatry, Professional Association
