Quality assurance procedure for a gamma guided stereotactic breast biopsy system

Benjamin L. Welch, Rachel Brem, Rachel Black, Stan Majewski

Research output: Contribution to journalArticle

Abstract

A quality assurance procedure has been developed for a prototype gamma-ray guided stereotactic biopsy system. The system consists of a compact small-field-of-view gamma-ray camera mounted to the rotational arm of a Lorad stereotactic biopsy system. The small-field-of-view gamma-ray camera has been developed for clinical applications where mammographic X-ray localization is not possible. Marker sources that can be imaged with the gamma-camera have been designed and built for quality assurance testing and to provide a fiducial reference mark. An algorithm for determining the three dimensional location of a region of interest, such as a lesion, relative to the fiducial mark has been implemented into the software control of the camera. This system can be used to determine the three-dimensional location of a region of interest from a stereo pair of images and that information can be used to guide a biopsy needle to that site. Point source phantom tests performed with the system have demonstrated that the camera can be used to localize a point of interest to within 1 mm, which is satisfactory for its use in needle localization.

Original languageEnglish (US)
Pages (from-to)102-105
Number of pages4
JournalPhysica Medica
Volume21
Issue numberSUPPL. 1
DOIs
StatePublished - 2006
Externally publishedYes

Fingerprint

Gamma Cameras
Gamma Rays
assurance
breast
Breast
cameras
Biopsy
gamma rays
needles
field of view
Needle Biopsy
Needles
Arm
Software
X-Rays
markers
lesions
point sources
prototypes
computer programs

Keywords

  • Breast cancer
  • Gamma camera
  • Needle core biopsy
  • Stereotactic

ASJC Scopus subject areas

  • Biophysics
  • Physics and Astronomy(all)

Cite this

Quality assurance procedure for a gamma guided stereotactic breast biopsy system. / Welch, Benjamin L.; Brem, Rachel; Black, Rachel; Majewski, Stan.

In: Physica Medica, Vol. 21, No. SUPPL. 1, 2006, p. 102-105.

Research output: Contribution to journalArticle

Welch, Benjamin L. ; Brem, Rachel ; Black, Rachel ; Majewski, Stan. / Quality assurance procedure for a gamma guided stereotactic breast biopsy system. In: Physica Medica. 2006 ; Vol. 21, No. SUPPL. 1. pp. 102-105.
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