Nature in May

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Hemorrhagic Choroid Plexus Cyst

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Transversal Diffusion Weighted sequence shows high signal in the left choroid plexus with corresponding low signal on ADC (restricted diffusion). Finding represents acute Hemorrhagic Choroid Plexus Cyst . It is also known as Choroid Plexus Xanthogranuloma . Gradient Echo sequence (third image) shows low signal in the right choroid plexus representing hemosiderine deposits after previous hemorrhage. Coronal T1 shows intermediate to high signal in the plexus cyst. Note also low signal in the right plexus on T2 (old hemorrhage) and high signal on FLAIR in the left plexus (acute hemorrhage). Choroid Plexus Cysts are very common normal finding. Those often show restricted diffusion. However in our case of patient with hypertension this finding is of interest to the clinicians as a requirement to more closely monitor patient's blood pressure. There were no signs of intraventricular hemorrhage.
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CT Pelvimetry - Bäckenmätning

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Below is a short summary of the protocol for Pelvimetry (Bäckenmätning in Swedish). First a thick MIP is reconstructed on the scanner that covers whole pelvis. A line is drawn on the scanner that is later used for calibration on PACS workstation. Calibration of the previously measured line. On the above MIP the Transversal Inlet Diameter (Transverstingångsmått) is measured as the largest transversal distance in the pelvic inlet. As well as Intertubar Diameter (Intertubaravstånd) as distance between  ischial tubers . On sagittal reconstruction measure Sagittal Inlet Diameter (Sagittellt ingångsmått) as shortest distance between posterior part of symphysis pubis and promontorium (S1). As well as Sagittal Outlet Diameter (Sagittellt utgångsmått) as shortest distance between posterior part of symphysis pubis and fist mobile joint between sacrum and coccyx . On axial reconstruction (see topogram for level) measure Interspinal Diameter (Interspinal avstån...
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Intracranial Hypotension - Decoding the Intracranial Hemodynamic Paradox

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  Welcome back to the blog. In our latest case presentation on Radiant Pixels , we explore a fascinating neuroradiological riddle involving a 70-year-old patient. This case perfectly demonstrates how a familiar vascular pathology can completely mask a hidden, underlying mechanical issue. The Contradictory Imaging Findings At first glance, the brain MRI presents a highly complex, multi-compartment constellation of findings: Bilateral Chronic Subdural Hematomas (CSDHs): Measuring 3–4 mm both supra- and infratentorial, showing persistent enhancement one year after prior surgical evacuation via bilateral frontoparietal trepanation holes. Chronic Dural Venous Sinus Thrombosis (CVST): A clear void of contrast enhancement centrally within the right sigmoid sinus and jugular foramen region, accompanied by a distended right jugular vein. Diffuse Pachymeningeal Enhancement: Striking, smooth, generalized dural enhancement visible on post-gadolinium T1 sequences. Pituitary Hyperemia: Upwar...
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