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JNMT (June 2013) The Value of Observer Performance Studies in Dose Optimization: A Focus on Free-Response Receiver Operating Characteristic Methods
JNMT, June 2013, Volume 41, Number 2

JNMT (June 2013) The Value of Observer Performance Studies in Dose Optimization: A Focus on Free-Response Receiver Operating Characteristic Methods

JNMT, June 2013, Volume 41, Number 2

Member Fee: Free
Non-Member Fee: $15.00

Release Date: June 1, 2013
Expiration Date: June 30, 2016

California Scope: 1 Non-Imaging (NI)

John D. Thompson1,2, David J. Manning3, and Peter Hogg1

1University of Salford, Salford, United Kingdom; 2University Hospitals of Morecambe Bay NHS Foundation Trust, Barrow-in-Furness, United Kingdom; and 3Lancaster University, Lancaster, United Kingdom

Receiver operating characteristic (ROC) analysis has been successfully used in radiology to help determine the combined success of system and observer. There is great value in these methods for assessing new and existing techniques to see if diagnostic accuracy can be improved. Within all aspects of radiology there should be compliance with the as-low-as-reasonably-achievable principle, which requires optimization of the diagnostic suitability of the image. Physical measures of image quality have long been used in the assessment of system performance, but these alone are not sufficient to assess diagnostic capability. It is imperative that the observer be included in any assessment of diagnostic performance. The free-response ROC paradigm has been developed as a statistically powerful advancement of traditional ROC analysis that allows a precise interpretation of complex images by adding location information to the level of observer confidence. The following review of free-response ROC methodology will explain how observer performance methods can be valuable in image optimization, including examples of how these have already been successful in hybrid imaging.

Key Words: FROC; optimization; observer performance
J Nucl Med Technol 2013; 41:57–64
DOI: 10.2967/jnmt.112.116566

Target Audience
Technologists and any professionals in the nuclear medicine and related fields.

 

Continuing Education Credit Information

 

VOICE (Technologists)
The SNMMI, through its Verification of Involvement in Continuing Education (VOICE) program, has approved this journal article for a maximum of 1.0 continuing education hours (CEHs). VOICE-approved credit is recognized by most licensure states and by the NMTCB and ARRT as Category A credit. In order to receive CE credit, you must first complete the activity content. When completed, take the post-test assessment.  You must obtain a score of 80% to receive the CE credit.  You will have no more than 3 attempts to successfully complete the post-test. Release Date: June 1, 2013. Expiration Date: June 30, 2016. California Scope: 1.0 Non-Imaging (NI).

 


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