The hypothesis of the study is that non-invasive Single photon emission computed tomography (SPECT-CT) bone scintigraphy makes it possible to better characterize solitary bone lesions, in particular the exclusion of their malignancy in order to avoid unnecessary biopsy and possible complications for the patient.
Bone scintigraphy includes 3 stages: study of perfusion then of early tissue uptake and finally of late bone fixation. Hyperactivity of malignant bone lesions at the 3 stages of bone scintigraphy has been reported, but on planar scintigraphic images not allowing precise anatomical localization of the lesions. Currently, the generalization of SPECT-CT (Single Photon Emission Computed Tomography) combined with Tomodensitometry) acquisition thanks to the deployment of semiconductor cameras, makes it possible to carry out a multiparametric analysis of bone lesions with quantification of the intensity of the signal expressed in SUVmax (Standard Uptake Value maximum) at the 3 times of the scintigraphy
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
68
the bone scintigraphy will include 3 stages: study of perfusion then early tissue uptake and finally late bone fixation
CHRU Nancy
Vandœuvre-lès-Nancy, France
RECRUITINGAssess the diagnostic performance of the Time To Peak parameter
Sensitivity, specificity, positive predictive value and negative predictive value of the dynamic parameter Time-to-peak to characterize a benign lesion. The Time-To-Peak is defined by the time to reach the SUVmax peak, i.e. the top of the perfusion curve. The benign character is defined by criteria of biopathology at the biopsy +/- surgery.
Time frame: 24 hours
To evaluate the diagnostic performance of the Standard Uptake Value max at the early stage (2nd stage) in bone scintigraphy in the evaluation of the benign nature of indeterminate solitary bone lesions on conventional imaging.
Sensitivity, specificity, Positive Predictive Value and Negative Predictive Value of the Standard Uptake Value max at the early time to characterize a benign lesion.
Time frame: 24 hours
o evaluate the diagnostic performance of the Standard Uptake Value max at the early stage (3 rd stage) in bone scintigraphy in the evaluation of the benign nature of indeterminate solitary bone lesions on conventional imaging.
Sensitivity, specificity, Positive Predictive Value and Negative Predictive Value of the Standard Uptake Value max at the late stage to characterize a benign lesion.
Time frame: 24 hours
Evaluate the impact of multiparametric analysis (combination of Time-To-Peak, Standard Uptake Value max early and late) in the classification of solitary bone lesions in bone scintigraphy.
Number of patients with a benign lesion on multiparametric bone scintigraphy analysis among patients with an indeterminate bone lesion on conventional imaging and having undergone a biopsy +/- excision, defined as: 1/ \[% of benign lesions detected with multiparametric analysis in bone scintigraphy\].
Time frame: 24 hours
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