Abstract
BackgroundThe plasma cell disease is been studying by the whole-body MRI technology. However, the time requested to learn this radiological technique is unknown.PurposeTo esteem, quantitatively and qualitatively, the essential time to learn the whole-body MRI diffusion-weighted imaging with background body signal suppression in patients with plasma cell disease.Materials and methodsBetween January 2015 and February 2017, three readers in-training with different levels of experience examined the anonymised and randomised whole-body MRI images of 52 patients with a diagnosis of plasma cell disease and analysed their morphological (T1w, T2w with and without fat suppression) and functional sequences. Reports of an expert radiologist were considered the standard of reference. Images were analysed in two sessions, during which each reader was timed. Readers reported the number of segments with lesions and staged the disease using the Durie–Salmon PLUS staging system. Weighted Cohen’s ĸ and Z-test were used to compare the trainees’ reports with those of the expert radiologist, and learning curves were drawn up to show changes between the two sessions.ResultsWeighted Cohen’s ĸ of number of lesioned segments increased from 0.536 ± 0.123 to 0.831 ± 0.129 (Prob > Z under 0.005), thus approaching the goal of ĸ > 0.8. Trainees reached the level of experienced radiologist in terms of time by the 33rd patient. Agreement concerning the Durie–Salmon PLUS increased from 0.536 ± 0.123 to 0.831 ± 0.129 (Prob > Z under 0.005).ConclusionsThe findings of this study demonstrate that whole-body MRI with DWIBS can be learned in about 80 reports and leads to a high level of inter-observer concordance when using the Durie–Salmon PLUS staging system.
Highlights
IntroductionPurpose To esteem, quantitatively and qualitatively, the essential time to learn the whole-body Magnetic resonance imaging (MRI) diffusion-weighted imaging with background body signal suppression in patients with plasma cell disease
Plasma cell disorders are a type of blood cancer in which plasma cells become malignant and can cause damage to the bones, kidneys, heart, bone marrow and immune system, andThe work originated in Department of Diagnostic Radiology, Maggiore Hospital of Novara, Corso Giuseppe Mazzini, 18, 28,100 Novara, Italy.the MM has an annual incidence of 4–5/100,000 people per year, making it the most frequent primary malignant neoplasm of the skeletal system
It is a natural development of an Monoclonal gammopathy of undetermined significance (MGUS), which has an annual rate of transformation into MM of 0.5–1%, and smouldering myeloma (SM), whose annual transformation rate is 10% during the first five years [2]
Summary
Purpose To esteem, quantitatively and qualitatively, the essential time to learn the whole-body MRI diffusion-weighted imaging with background body signal suppression in patients with plasma cell disease. Materials and methods Between January 2015 and February 2017, three readers in-training with different levels of experience examined the anonymised and randomised whole-body MRI images of 52 patients with a diagnosis of plasma cell disease and analysed their morphological (T1w, T2w with and without fat suppression) and functional sequences. Conclusions The findings of this study demonstrate that whole-body MRI with DWIBS can be learned in about 80 reports and leads to a high level of inter-observer concordance when using the Durie–Salmon PLUS staging system
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