New England Medical Center Hospitals. Inc.

New England Medical Center

Mark J Rivard

Mark J Engler

A radiation field detection system, for use with a radiating device, includes a radiation detector configured to receive radiation and to provide radiation strength indicia of amounts of radiation received, a positioning mechanism connected to the radiation detector and configured to physically move the radiation detector, and a processor coupled to the positioning mechanism and coupled to the radiation detector to receive the radiation strength indicia, the processor being configured to: actuate the positioning mechanism to move the radiation detector to desired locations within a radiation field produced by the radiating device; analyze the radiation strength indicia from the radiation detector; correlate positions of the radiation detector with corresponding amounts of received radiation; determine a first location of maximum detected radiation; and determine a first relationship between the first location of maximum detected radiation and a second location of maximum radiation.

Radiation field detection

The present invention discloses a methodology for the characterization and determination of mixed-field dosimetry forCf Applicator Tube (AT)-type medical sources, utilizing ionization chambers, GM counters, and Monte Carlo methods. Unlike the previous methodologies, the present invention discloses a specification of dose to muscle, rather than dose to water, for clinical dosimetry ofCf medical sources. A dosimetry protocol, similar to that utilized for ICRU-45, with parameters determined specifically forCf brachytherapy is disclosed. Neutron isodose distributions and data necessary for clinical implementation ofCf AT sources are also disclosed herein. Additionally, novel methods for the encapsulation, storage, and delivery/implantation ofCf radionuclide sources are disclosed.

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The present invention discloses a methodology for the characterization and determination of mixed-field dosimetry for Cf Applicator Tube (AT)-type medical sources, utilizing ionization chambers, GM counters, and Monte Carlo methods. Unlike the previous methodologies, the present invention discloses a specification of dose to muscle, rather than dose to water, for clinical dosimetry of Cf medical sources. A dosimetry protocol, similar to that utilized for ICRU-45, with parameters determined specifically for Cf brachytherapy is disclosed. Neutron isodose distributions and data necessary for clinical implementation of Cf AT sources are also disclosed herein. Additionally, novel methods for the encapsulation, storage, and delivery/implantation of Cf radionuclide sources are disclosed.

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Hopkinton, MA, United States of America

Mark J Rivard