Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4747
Título: Value of a lower limb immobilization device for SPECT/CT image fusion optimization
Autor: Machado, Joana do Mar
Monteiro, Marina S.
Vieira, Victor Fernandes
Collinot, Jean-Aybert
Prior, John O.
Vieira, Lina
Jorge, José A. Pires
Palavras-chave: Nuclear medicine
SPECT/CT
Misalignment
Lower-limb
Patient-motion
Data: Jun-2015
Editora: Society of Nuclear Medicine and Molecular Imaging
Citação: Machado JM, Monteiro MS, Vieira VF, Collinot JA, Prior JO, Vieira L, et al. Value of a lower limb immobilization device for SPECT/CT image fusion optimization. J Nucl Med Technol. 2015;43(2):98-102.
Resumo: The foot and the ankle are small structures commonly affected by disorders, and their complex anatomy represent significant diagnostic challenges. SPECT/CT Image fusion can provide missing anatomical and bone structure information to functional imaging, which is particularly useful to increase diagnosis certainty of bone pathology. However, due to SPECT acquisition duration, patient’s involuntary movements may lead to misalignment between SPECT and CT images. Patient motion can be reduced using a dedicated patient support. We aimed at designing an ankle and foot immobilizing device and measuring its efficacy at improving image fusion. Methods: We enrolled 20 patients undergoing distal lower-limb SPECT/CT of the ankle and the foot with and without a foot holder. The misalignment between SPECT and CT images was computed by manually measuring 14 fiducial markers chosen among anatomical landmarks also visible on bone scintigraphy. Analysis of variance was performed for statistical analysis. Results: The obtained absolute average difference without and with support was 5.1±5.2 mm (mean±SD) and 3.1±2.7 mm, respectively, which is significant (p<0.001). Conclusion: The introduction of the foot holder significantly decreases misalignment between SPECT and CT images, which may have clinical influence in the precise localization of foot and ankle pathology.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4747
DOI: 10.2967/jnmt.114.145771
Versão do Editor: http://tech.snmjournals.org/content/43/2/98.long
Aparece nas colecções:ESTeSL - Artigos

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