European radiology
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To investigate whether the apparent diffusion coefficient (ADC) from diffusion-weighted magnetic resonance imaging (DW-MRI) could help improve the prediction of insignificant prostate cancer in candidates for active surveillance (AS). ⋯ • ADC from DW-MRI can help assess prostate cancer aggressiveness in potential AS candidates. • There was a closed correlation between higher ADC values and insignificant prostate cancer. • The absence of lesions on DWI/DWI can help select potential AS candidates.
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Comparative Study
Comparative analysis of clinicoradiologic characteristics of lung adenocarcinomas with ALK rearrangements or EGFR mutations.
To compare the clinicoradiologic features of tumours with echinoderm anaplastic lymphoma kinase (ALK) rearrangements, epidermal growth factor receptor (EGFR) mutations, or wild type (WT) for both genes in a cohort of patients with lung adenocarcinoma to identify useful characteristics of different gene statuses. ⋯ • EGFR/ALK testing is recommended for lung adenocarcinoma patients for EGFR/ALK-targeted TKI therapy. • EGFR /ALK testing is restricted by limited tissue samples and cost pressures. • Lower pGGO and TDR are the main clinicoradiological characteristics of ALK+ tumours. • pGGO and TDR are predictive factors for selecting patients for ALK/EGFR testing.
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We compared carotid plaque calcification detection sensitivity and apparent cross-sectional area on CT as a function of CT beam energy using conventional CT techniques and virtual mono-energetic CT images generated from dual-energy acquisitions. ⋯ • Calcifications depicted at 80-100 keV were most similar to the histology standard. • Conventional polychromatic images demonstrated excellent correlation with plaque size at pathology. • Conventional polychromatic images systematically overestimate plaque size. • Plaque calcifications can be missed on high energy monochromatic images.
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To determine which abdominal CT findings predict severe fibrosis and post-operative pain relief in chronic pancreatitis (CP). ⋯ • Parenchymal calcifications in chronic pancreatitis independently predict post-operative pain relief • Intraductal calculi and MPD dilation are not associated with post-operative pain relief • Better patient selection for pancreatic resection surgery in painful chronic pancreatitis.
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To investigate the diagnostic contribution of T2-w nerve lesions and of muscle denervation in peripheral motor neuropathies by magnetic resonance neurography (MRN). ⋯ • In peripheral neuropathy, T2-w nerve lesions are more frequent than muscle denervation. • Muscle denervation almost never occurs without detectable lesions in corresponding nerves. • MRN-aided diagnosis of peripheral motor neuropathy should focus primarily on nerve lesions. • Increased muscular T2-w signal intensity without concomitant nerve lesions indicates other aetiology.