Silviana Nina Jianu

Dr. Silviana Nina Jianu


Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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11 May 2022 in Life
Verified
Journal Article
Open access
PDF file
Dragos Catalin JianuDragos Catalin Jianu
Dragos Catalin Jianu
SJSilviana Nina Jianu
Silviana Nina Jianu
TDTRAIAN FLAVIUS DAN
TRAIAN FLAVIUS DAN
GMGeorgiana Munteanu
Georgiana Munteanu
ACAlexandra Copil
Alexandra Copil
AGAnca Elena Gogu
Anca Elena Gogu
(1) Objective: This review paper aims to discuss multiple aspects of cerebral venous thrombosis (CVT), including epidemiology, etiology, pathophysiology, and clinical presentation. Different neuroimaging methods for diagnosis of CVT, such as computer tomography CT/CT Venography (CTV), and Magnetic Resonance Imaging (MRI)/MR Venography (MRV) will be presented. (2) Methods: A literature analysis using PubMed and the MEDLINE sub-engine was done using the terms: cerebral venous thrombosis, thrombophilia, and imaging. Different studies concerning risk factors, clinical picture, and imaging signs of patients with CVT were examined. (3) Results: At least one risk factor can be identified in 85% of CVT cases. Searching for a thrombophilic state should be realized for patients with CVT who present a high pretest probability of severe thrombophilia. Two pathophysiological mechanisms contribute to their highly variable clinical presentation: augmentation of venular and capillary pressure, and diminution of cerebrospinal fluid absorption. The clinical spectrum of CVT is frequently non-specific and presents a high level of clinical suspicion. Four major syndromes have been described: isolated intracranial hypertension, seizures, focal neurological abnormalities, and encephalopathy. Cavernous sinus thrombosis is the single CVT that presents a characteristic clinical syndrome. Non-enhanced CT (NECT) of the Head is the most frequently performed imaging study in the emergency department. Features of CVT on NECT can be divided into direct signs (demonstration of dense venous clot within a cerebral vein or a cerebral venous sinus), and more frequently indirect signs (such as cerebral edema, or cerebral venous infarct). CVT diagnosis is confirmed with CTV, directly detecting the venous clot as a filling defect, or MRI/MRV, which also realizes a better description of parenchymal abnormalities. (4) Conclusions: CVT is a relatively rare disorder in the general population and is frequently misdiagnosed upon initial examination. The knowledge of wide clinical aspects and imaging signs will be essential in providing a timely diagnosis.

6 August 2021 in Diagnostics
Verified
Journal Article
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Dragos Catalin JianuDragos Catalin Jianu
Dragos Catalin Jianu
SJSilviana Nina Jianu
Silviana Nina Jianu
TDTRAIAN FLAVIUS DAN
TRAIAN FLAVIUS DAN
NINicoleta Iacob
Nicoleta Iacob
GMGeorgiana Munteanu
Georgiana Munteanu
Anca GoguAnca Gogu
Anca Gogu
Cerebral venous and dural sinus thrombosis (CVT) is an uncommon disease in the general population, although it is a significant stroke type throughout pregnancy and the puerperium. Studies describing this subtype of CVT are limited. Most pregnancy-associated CVT happen in late pregnancy, or more commonly in the first postpartum weeks, being associated with venous thrombosis outside the nervous system. Case presentation: The current study describes a case of multiple CVT in a 38-year-old woman with multiple risk factors (including severe inherited thrombophilia and being in the puerperium period), presenting mixed transcortical aphasia (a rare type of aphasia) associated with right moderate hemiparesis and intracranial hypertension. The clinical diagnosis of CVT was confirmed by laboratory data and neuroimaging data from head computed tomography, magnetic resonance imaging, and magnetic resonance venography. She was successfully treated with low-molecular-weight heparin (anticoagulation) and osmotic diuretics (mannitol) for increased intracranial pressure and cerebral edema. At discharge, after 15 days of evolution, she presented a partial recovery, with anomic plus aphasia and mild right hemiparesis. Clinical and imaging follow-up was performed at 6 months after discharge; our patient presented normal language and mild right central facial paresis, with chronic left thalamic, caudate nucleus, and internal capsule infarcts and a partial recanalization of the dural sinuses.

30 November 2021 in Biomedicines
Verified
Journal Article
Open access
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Dragos Catalin JianuDragos Catalin Jianu
Dragos Catalin Jianu
SJSilviana Nina Jianu
Silviana Nina Jianu
TDTRAIAN FLAVIUS DAN
TRAIAN FLAVIUS DAN
GMGeorgiana Munteanu
Georgiana Munteanu
CBClaudiu Dumitru Bîrdac
Claudiu Dumitru Bîrdac
Anca GoguAnca Gogu
Anca Gogu
Giant cell arteritis (GCA) is a primary autoimmune vasculitis that specifically affects medium-sized extracranial arteries, like superficial temporal arteries (TAs). The most important data to be considered for the ultrasound (US) diagnosis of temporal arteritis are stenosis, acute occlusions and “dark halo” sign, which represent the edema of the vascular wall. The vessel wall thickening of large vessels in GCA can be recognized by the US, which has high sensitivity and is facile to use. Ocular complications of GCA are common and consist especially of anterior arterial ischemic optic neuropathies or central retinal artery occlusion with sudden, painless, and sharp loss of vision in the affected eye. Color Doppler imaging of the orbital vessels (showing low-end diastolic velocities and a high resistance index) is essential to quickly differentiate the mechanism of ocular involvement (arteritic versus non-arteritic), since the characteristics of TAs on US do not correspond with ocular involvement on GCA. GCA should be cured immediately with systemic corticosteroids to avoid further visual loss of the eyes.

1 January 2016
Verified
Journal Article
Closed access
Dragos Catalin JianuDragos Catalin Jianu
Dragos Catalin Jianu
SJSilviana Nina Jianu
Silviana Nina Jianu
TDTraian Flavius Dan
Traian Flavius Dan
AMAndrei Gheorghe Marius Motoc
Andrei Gheorghe Marius Motoc
MPMărioara Poenaru
Mărioara Poenaru

10 October 2018
Verified
Book Chapter
Open access
PDF file
Dragos Catalin JianuDragos Catalin Jianu
Dragos Catalin Jianu
SJSilviana Nina Jianu
Silviana Nina Jianu
GMGeorgiana Munteanu
Georgiana Munteanu
TDTRAIAN FLAVIUS DAN
TRAIAN FLAVIUS DAN
CBClaudia Bârsan
Claudia Bârsan
Cerebral venous thrombosis (CVT) is an uncommon disorder in the general population. At least 1 risk factor can be identified in 85% of patients with CVT. Because of the high frequency of thrombophilia among patients with CVT, screening for hypercoagulable conditions should be performed. Two pathophysiological mechanisms contribute to their highly variable clinical presentation. Four major syndromes have been described: isolated intracranial hypertension, focal neurological abnormalities, seizures, and encephalopathy. Cavernous sinus thrombosis represents the single CVT which produces a characteristic clinical syndrome. Head Computed Tomography is the most frequently performed imaging study, but Magnetic Resonance Imaging of the head combined with Magnetic Resonance venography are the most sensitive studies. Acute phase therapy for CVT focuses on anticoagulation, management of seizures, increased intracranial pressure, and prevention of cerebral herniation. The majority of patients have a complete or partial recovery, however they have an increased incidence of venous thromboembolism. Clinical and imaging follow-ups 3–6 months after diagnosis are recommended to assess for recanalization.

24 April 2023 in Life
Verified
Journal Article
Open access
PDF file
Dragos Catalin JianuDragos Catalin Jianu
Dragos Catalin Jianu
SJSilviana Nina Jianu
Silviana Nina Jianu
NINicoleta Iacob
Nicoleta Iacob
TDTRAIAN FLAVIUS DAN
TRAIAN FLAVIUS DAN
GMGeorgiana Munteanu
Georgiana Munteanu
IIIoana Ionita
Ioana Ionita
(1) Background: Cerebral venous and dural sinus thrombosis (CVT) rarely appears in the adult population. It is difficult to diagnosis because of its variable clinical presentation and the overlapping signal intensities of thrombosis and venous flow on conventional MR images and MR venograms. (2) Case presentation: A 41-year-old male patient presented with an acute isolated intracranial hypertension syndrome. The diagnosis of acute thrombosis of the left lateral sinus (both transverse and sigmoid portions), the torcular Herophili, and the bulb of the left internal jugular vein was established by neuroimaging data from head-computed tomography, magnetic resonance imaging (including Contrast-enhanced 3D T1-MPRAGE sequence), and magnetic resonance venography (2D-TOF MR venography). We detected different risk factors (polycythemia vera-PV with JAK2 V617F mutation and inherited low-risk thrombophilia). He was successfully treated with low-molecular-weight heparin, followed by oral anticoagulation. (3) Conclusions: In the case of our patient, polycythemia vera represented a predisposing risk factor for CVT, and the identification of JAK2 V617F mutation was mandatory for the etiology of the disease. Contrast-enhanced 3D T1-MPRAGE sequence proved superior to 2D-TOF MR venography and to conventional SE MR imaging in the diagnosis of acute intracranial dural sinus thrombosis.