European radiology
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Optimal contrast within the pulmonary artery is achieved by the maximum amount of contrast-enhanced blood flowing through the superior vena cava (SVC), while minimum amounts of non-contrasted blood should originate from the inferior vena cava (IVC). This study aims to clarify whether "suction against resistance" might optimise this ratio. ⋯ Suction provokes reduction in blood flow in the inferior vena cava. Ratio between the inferior and superior vena cava blood flow diminished during suction. Manometer used during breathing standardises MR phase-contrast blood flow measurements.
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Comparative Study
Comparison of 3D double inversion recovery and 2D STIR FLAIR MR sequences for the imaging of optic neuritis: pilot study.
We compared the three-dimensional (3D) double inversion recovery (DIR) magnetic resonance imaging (MRI) sequence with the coronal two-dimensional (2D) short tau inversion recovery (STIR) fluid-attenuated inversion recovery (FLAIR) for the detection of optic nerve signal abnormality in patients with optic neuritis (ON). ⋯ 3D DIR is increasingly used in neuroradiology. Compared with STIR FLAIR, 3D DIR improves detection of optic neuritis. Multiplanar analysis had the best diagnostic performance for optic nerve signal abnormalities. Sensitivity was 95% and specificity 94%. Findings support the use of 3D DIR instead of 2D sequences.
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The aim of this study was to assess the diagnostic performance of pre-treatment 3-Tesla (3T) multiparametric magnetic resonance imaging (mpMRI) for predicting Gleason score (GS) downgrading after radical prostatectomy (RP) in patients with GS 3 + 4 prostate cancer (PCa) on biopsy. ⋯ Diagnostic performance of T2-weighted-imaging + DWI was better than T2-weighted-imaging alone. Diagnostic performance of T2-weighted-imaging + DWI was similar to T2-weighted-imaging + DWI + DCE-MRI. Combining clinical and T2-weighted-imaging + DWI features best predicted GS downgrading. mpMRI might prevent overtreatment by increasing eligibility for PCa active surveillance.
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Observational Study
Percutaneous long bone cementoplasty of the limbs: experience with fifty-one non-surgical patients.
To review our 10-year experience with percutaneous long bone cementoplasty (PLBC) in poor surgical patients. ⋯ Percutaneous long bone cementoplasty may be proposed to poor surgical patients. Pain palliation is more significant for lesions of the upper limb. Limb function improves significantly for lesions sized ≤ 3 cm. Fracture is the most common delayed adverse event (9% of cases). If cement stress fracture occurs, surgical external fixation is still feasible.