Stereotactic imaging for radiosurgery: Localization accuracy of magnetic resonance imaging and positron emission tomography compared with computed tomography

Yoshimasa Mori, Naoki Hayashi, Mikio Iwase, Masami Yamada, Yukinori Takikawa, Yukio Uchiyama, Kyota Oda, Osamu Kaii

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) provide complementary information for treatment planning in stereotactic radiosurgery. We evaluated the localization accuracy of MRI and PET compared with CT. Two kinds of phantoms applicable to the Leksell G stereotactic skull frame (Elekta, Tokyo) were developed. Deviations of measured coordinates at target points (x = 50, 100, 150; y = 50, 100, 150) were determined on different axial planes (z = 30-140 for MRI and CT study and Z = 50-120 for PET and CT study). For MRI, the deviations were no more than 0.8 mm in each direction. For PET, the deviations were no more than 2.7 mm. For both imaging modalities studied, accuracy was at or below the imaging resolution (pixel size) and should be considered useful for clinical stereotactic planning purposes.

Original languageEnglish
Pages (from-to)142-146
Number of pages5
JournalStereotactic and Functional Neurosurgery
Volume84
Issue number4
DOIs
Publication statusPublished - 09-2006

All Science Journal Classification (ASJC) codes

  • Surgery
  • Clinical Neurology

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