Assessment of Geometrical Accuracy of Multimodal Images Used for Treatment Planning in Stereotactic Radiotherapy and Radiosurgery: CT, MRI and PET

Journal Article · Fri Sep 08 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2356446· OSTI ID:20888200

Garcia-Garduno, O A; Larraga-Gutierrez, J M; Celis, M A; Suarez-Campos, J J; Rodriguez-Villafuerte, M; Martinez-Davalos, A ^[1]

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1. Unidad de Radioneurocirugia, Instituto Nacional de Neurologia y Neurocirugia, Mexico, D.F., 14269 (Mexico)

An acrylic phantom was designed and constructed to assess the geometrical accuracy of CT, MRI and PET images for stereotactic radiotherapy (SRT) and radiosurgery (SRS) applications. The phantom was suited for each image modality with a specific tracer and compared with CT images to measure the radial deviation between the reference marks in the phantom. It was found that for MRI the maximum mean deviation is 1.9 {+-} 0.2 mm compared to 2.4 {+-} 0.3 mm reported for PET. These results will be used for margin outlining in SRS and SRT treatment planning.

• OSTI ID: 20888200
• Journal Information: AIP Conference Proceedings, Vol. 854, Issue 1; Conference: 9. Mexican symposium on medical physics, Guadalajara, Jal. (Mexico), 18-21 Mar 2006; Other Information: DOI: 10.1063/1.2356446; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
CAT SCANNING
NMR IMAGING
PHANTOMS
POSITRON COMPUTED TOMOGRAPHY
RADIOTHERAPY
SURGERY