Dosimetric analysis of stereo and orthogonal reconstruction of interstitial implants

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · Int. J. Radiat. Oncol., Biol. Phys.; (United States)

DOI:https://doi.org/10.1016/0360-3016(82)90306-6· OSTI ID:6936242

Sharma, S C ^[1]; Williamson, J F; Cytacki, E

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1. Univ. of Minnesota Hospitals, Minneapolis, MN

The performance of stereo and orthogonal computerized three-dimensional implant reconstruction algorithms were evaluated. Sets of orthogonal and stereo radiographs of a simulated interstitial seed implant were taken. Computer reconstructed coordinates of each source were compared with their measured positions in order to assess the geometric accuracy of the two methods.It was found that the effect of random measurement errors on reconstructed coordinates from stereo films is 3-5 times that of the orthogonal method.Although relative individual seed position may be in error by as much as 1 cm, these errors do not significantly change the shape or area of isodose curves surrounding the implant periphery.

• OSTI ID: 6936242
• Journal Information: Int. J. Radiat. Oncol., Biol. Phys.; (United States), Journal Name: Int. J. Radiat. Oncol., Biol. Phys.; (United States) Vol. 8:10; ISSN IOBPD
• Country of Publication: United States
• Language: English

Related Subjects

550603 -- Medicine-- External Radiation in Therapy-- (1980-)
61 RADIATION PROTECTION AND DOSIMETRY
62 RADIOLOGY AND NUCLEAR MEDICINE
655003* -- Medical Physics-- Dosimetry
ALGORITHMS
COMPUTERIZED SIMULATION
DATA COVARIANCES
DISEASES
DOSIMETRY
EVALUATION
IMAGES
IMPLANTS
ISODOSE CURVES
MATHEMATICAL LOGIC
NEOPLASMS
RADIATION SOURCE IMPLANTS
RADIATION SOURCES
SIMULATION