Algorithm for Wireless, Motion and Position-Sensing, Integrating Radiation Sensor Occupational and Environmental Dosimetry

An apparatus comprising:

• one or more processors, and
• a machine-readable medium for storing instructions thereon which when executed by the one or more processors cause the one or more processors to perform operations comprising the following steps:
• (a) determining radiation dose values for a response matrix by determining a radiation dose value for each radiation field in a response matrix from a plurality of detector elements of a dosimeter,
• (b) determining a final net radiation dose value for each radiation field in the response matrix, and
• (c) displaying the final net radiation dose value for each radiation field in the response matrix to a user and/or saving the final net radiation dose value for each radiation field to a first storage medium,
• wherein each radiation field has a radiation source,
• wherein step (b) comprises conducting a numerical optimization process comprising the following steps:
• (i) generating an initial solution vector for each radiation field,
• (ii) iteratively updating the initial solution vector for each radiation field until an objective function is minimized to thereby generate an optimal solution vector, and
• (iii) determining a radiation dose value for each radiation field based on the optimal solution vector for the source,
• wherein the objective function is
• min
• =
• ∑
• i
• 
• (
• cv
• i
• MEAS
• -
• cv
• i
• SOLUTION
• )
• 2
• where min is the minimized objective function,
• where i is the number of detector elements of the dosimeter,
• where j is the number of radiation fields,
• where cviMEAS is a normalized measured converted value for the ith detector element of the dosimeter, and
• where cviSOLUTION is the response for the ith detector element of the dosimeter for an algorithm solution field, and
• wherein each stored response is one of a plurality of stored responses stored on a second storage medium.

A machine-readable medium having stored thereon sequences of instructions, which when executed by one or more processors, cause one or more electronic devices to perform a set of operations comprising the following steps:

• (a) determining radiation dose values for a response matrix by determining a radiation dose value for each radiation field in a response matrix from a plurality of detector elements of a dosimeter,
• (b) determining a final net radiation dose value for each radiation field in the response matrix, and
• (c) displaying the final net radiation dose value for each radiation field in the response matrix to a user and/or saving the final net radiation dose value for each radiation field to a first storage medium,
• wherein each radiation field has a radiation source,
• wherein step (b) comprises conducting a numerical optimization process comprising the following steps:
• (i) generating an initial solution vector for each radiation field,
• (ii) iteratively updating the initial solution vector for each radiation field until an objective function is minimized to thereby generate an optimal solution vector, and
• (iii) determining a radiation dose value for each radiation field based on the optimal solution vector for the source,
• wherein the objective function is
• min
• =
• ∑
• i
• 
• (
• cv
• i
• MEAS
• -
• cv
• i
• SOLUTION
• )
• 2
• where min is the minimized objective function,
• where i is the number of detector elements of the dosimeter,
• where j is the number of radiation fields,
• where cviMEAS is a normalized measured converted value for the ith detector element of the dosimeter,
• wherein cviSOLUTION is the response for the ith detector element of the dosimeter for an algorithm solution field
• wherein each stored response is one of a plurality of stored responses stored on a second storage medium.

A method comprising the following steps:

• (a) determining radiation dose values for a response matrix by determining a radiation dose value for each radiation field in a response matrix from a plurality of detector elements of a dosimeter,
• (b) determining a final net radiation dose value for each radiation field in the response matrix, and
• (c) displaying the final net radiation dose value for each radiation field in the response matrix to a user and/or saving the final net radiation dose value for each radiation field to a first storage medium,
• wherein each radiation field has a radiation source,
• wherein step (b) comprises conducting a numerical optimization process comprising the following steps:
• (i) generating an initial solution vector for each radiation field,
• (ii) iteratively updating the initial solution vector for each radiation field until an objective function is minimized to thereby generate an optimal solution vector, and
• (iii) determining a radiation dose value for each radiation field based on the optimal solution vector for the source,
• wherein the objective function is
• min
• =
• ∑
• i
• 
• (
• cv
• i
• MEAS
• -
• cv
• i
• SOLUTION
• )
• 2
• where min is the minimized objective function,
• where i is the number of detector elements of the dosimeter,
• where j is the number of radiation fields,
• where cviMEAS is a normalized measured converted value for the ith detector element of the dosimeter,
• wherein cviSOLUTION is the response for the ith detector element of the dosimeter for an algorithm solution field
• wherein each stored response is one of a plurality of stored responses stored on a second storage medium.