{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T15:09:11Z","timestamp":1790780951743,"version":"4.1.0"},"reference-count":59,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2022,6,27]],"date-time":"2022-06-27T00:00:00Z","timestamp":1656288000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Euro J of Neurology"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background and purpose<\/jats:title>\n                    <jats:p>\n                      In the quest for in vivo diagnostic biomarkers to discriminate Parkinson's disease (PD) from progressive supranuclear palsy (PSP) and multiple system atrophy (MSA, mainly p phenotype), many advanced magnetic resonance imaging (MRI) techniques have been studied. Morphometric indices, such as the Magnetic Resonance Parkinsonism Index (MRPI), demonstrated high diagnostic value in the comparison between PD and PSP. The potential of quantitative susceptibility mapping (QSM) was hypothesized, as increased magnetic susceptibility (\u0394\n                      <jats:italic>\u03c7<\/jats:italic>\n                      ) was reported in the red nucleus (RN) and medial part of the substantia nigra (SNImed) of PSP patients and in the putamen of MSA patients. However, disease\u2010specific susceptibility values for relevant regions of interest are yet to be identified. The aims of the study were to evaluate the diagnostic potential of a multimodal MRI protocol combining morphometric and QSM imaging in patients with determined parkinsonisms and to explore its value in a population of undetermined cases.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>Patients with suspected degenerative parkinsonism underwent clinical evaluation, 3\u00a0T brain MRI and clinical follow\u2010up. The MRPI was manually calculated on T1\u2010weighted images. QSM maps were generated from 3D multi\u2010echo T2*\u2010weighted sequences.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      In determined cases the morphometric evaluation confirmed optimal diagnostic accuracy in the comparison between PD and PSP but failed to discriminate PD from MSA\u2010p. Significant nigral and extranigral differences were found with QSM. RN \u0394\n                      <jats:italic>\u03c7<\/jats:italic>\n                      showed excellent diagnostic accuracy in the comparison between PD and PSP and good accuracy in the comparison of PD and MSA\u2010p. Optimal susceptibility cut\u2010off values of RN and SNImed were tested in undetermined cases in addition to MRPI.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>A combined use of morphometric imaging and QSM could improve the diagnostic phase of degenerative parkinsonisms.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/ene.15447","type":"journal-article","created":{"date-parts":[[2022,6,14]],"date-time":"2022-06-14T12:40:37Z","timestamp":1655210437000},"page":"2944-2955","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Morphometric imaging and quantitative susceptibility mapping as complementary tools in the diagnosis of parkinsonisms"],"prefix":"10.1111","volume":"29","author":[{"given":"Sonia","family":"Mazzucchi","sequence":"first","affiliation":[{"name":"Neurology 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