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KMID : 0378020080510030029
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New Medical Journal
2008 Volume.51 No. 3 p.29 ~ p.35
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Usefulness of Bone SPECT using Triple Head Gamma Camera in Fracture Evaluation
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Jeon Tae-Joo
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Abstract
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Purpose: Bone scan is sensitive modality for the evaluation of skeletal trauma, however planar image has some limitation in detection and localization of hot uptakes in deep and complicated area. The aim of this study was to evaluate the usefulness of bone SPECT using triple head gamma camera in patients with various skeletal injuries.
Material and Methods : Twenty-four patients who underwent both planar bone scintigraphy and SPECT were included in this study group (3 cervical spine, 7 thoracic spine, 8 lumbar spine and 6 knee or tibial injuries). Variable angled triple head gamma camera (IRIX) was used for the study and SPECT was performed under the condition of 3 degrees angular movement per step with 22.5 sec acquisition time. Total imaging time for SPECT was 15 min and matrix of the image was 128 x 128.
Results: In 2 cases, both planar and SPECT failed to detect hot lesion and 5 reveal no significant difference in detection between two modalities. However, only SPECT depicted focal hot uptakes in 4 cases and provided additional informations of localization or better define of hot uptake in 13 cases comparing with planar study. Therefore, SPECT was significantly useful to evaluate the traumatic bone lesions in17 of 24 patients (70.8%).
Conclusion: In terms of sensitivity, lesion localization and scan time, bone SPECT using triple head gamma camera is very useful comparing with planar bone scintigraphy.
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KEYWORD
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SPECT, Single photon emission computed tomography, Fracture
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