Analysis of MRI-CT image registration accuracy by Tris-Axes Landmark / 医学研究生学报
Journal of Medical Postgraduates
;
(12)2003.
Article
in Chinese
| WPRIM
| ID: wpr-593457
ABSTRACT
Objective:
To study the accuracy of MRI-CT image registration in order to find a more effective method of image fusion and a standard for the evaluation of post-operative intra-cranial tumor radiotherapy.Methods:
Twenty-four patients with intra-cranial tumor underwent MR T1-weighed sequence and post-operative location CT scan under the same location condition.The trans-axial MR T1-weighed sequence and CT image were registered and the correlation between registration scores and errors was analyzed by the method of Tris-Axes Landmark.The linear registration errors were observed in the three-dimensional space of every patient.Results:
An improved linear correlation was found between registration scores and errors(r=-0.985,y=-0.551 3x+5.351 4).The registration met the clinical standard when the scores exceeded 6.61.Conclusion:
Tris-Axes Landmark is a preferable registration method to be used in clinical radiotherapy for rapid and precise evaluation of MRI-CT image registration accuracy.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Journal of Medical Postgraduates
Year:
2003
Type:
Article
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