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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.

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12/5/2011 · Radiology

A Novel Phantom Model For Mouse Tumor Dose Assessment Under MV Beams

By: Michael Gossman, MS, DABR, RSO, et al

Abstract -- In order to determine a mouse's dose accurately and prior to engaging in live mouse radiobiological research, a tissue-equivalent tumor-bearing phantom mouse was constructed and bored to accommodate detectors. Comparisons were made among four different types of radiation detectors, each inserted into the mouse phantom for radiation measurement under a 6 MV linear accelerator beam.

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9/9/2011 · Radiology

Radiation Skyshine From A 6 MeV Medical Accelerator

By: Michael Gossman, MS, DABR, RSO, et al

Skyshine radiation emanating from medical accelerator facilities is a phenomenon not well understood.

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7/22/2011 · Medical Physics

Design of Site-Specific Prognostic Morbidity-Mortality Studies and Internal Outcome Focus Studies in Radiation Oncology

By: Michael Gossman, MS, DABR, RSO, et al

In the process of radiation oncology department accreditation, surveyors pay close attention to continuous quality improvement in the clinical section.

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1/3/2010 · Medical Physics

NRC Restrictions On The Packaging Of Radioactive Material Should Be Expressed More Explicitly Than Simply in terms of "Activity"

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.

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1/2/2010 · Medical Physics

Establishing Radiation Therapy Treatment Planning Effects Involving Implantable Pacemakers And Implantable Cardioverter-Defibrillators

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

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12/31/2009 · Medical Physics

Dosimetric Effects Near Implanted Vascular Access Ports: An Examination Of External Photon Beam Dose Calculations

By: Michael Gossman, MS, DABR, RSO, et al

Vascular access ports are used widely in the administering of drugs for radiation oncology patients. Their dosimetric effect on radiation therapy delivery in photon beams has not been rigorously established. In this work, the effects on external beam fields when any of a variety of vascular access ports were included in the path of a high energy beam are studied. This study specifically identifies sidescatter and backscatter consequences as well as attenuation effects.

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