Reliability In Detection And Differentiation Between Calcification And Hemorrhage By 3 D Gre /Swi Technique Compared To Ct

2021 ◽  
Vol 23 (09) ◽  
pp. 177-186
Author(s):  
Monica Gunasingh ◽  
◽  
Dr. Muthiah Pitchandi ◽  
Dr. Karthik Krishna Ramakrishnan ◽  
Dr. Seena Cheppala Rajan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Relative Sensitivity ◽  
Clinical Suspicion ◽  
Susceptibility Weighted Imaging ◽  
Standard Protocol ◽  
Conventional Mri ◽  
Highly Sensitive ◽  
History Of

This study was conducted to evaluate the sensitivity of Magnetic Resonance (MR) Susceptibility-Weighted Imaging (SWI) and also to compare the sensitivity of Magnetic Resonance (MR) susceptibility-Weighted Imaging (SWI) and Computed Tomography (CT), such that SWI can replace the use of CT as a standard protocol in the detection and differentiation between calcification and Hemorrhage. A series of 70 patients included in this study with clinical suspicion or known history of intracranial hemorrhage/ calcifications for follow up, were scanned using both Philips Multiva 1.5T (MRI/SWI) and Philips Ingenuity 128 slice (CT) Results showed that SWI had 100% relative sensitivity, as it was able to detect both hemorrhage and calcifications in all the cases identified in CT. In addition, SWI detected hemorrhage in 2 additional cases that were nonspecific in CT. Furthermore, SWI detected signal from micro bleeds, which was missed on CT in three cases, and also detected calcification in two cases, which were not positively identified in CT. In conclusion, Susceptibility-Weighted Imaging (SWI) is highly sensitive for the detection and differentiation of hemorrhage and calcifications using Phase reconstructed images compared to conventional MRI methods and Computed Tomography.

scholarly journals Papiloma Invertido, importancia de la Tomografía Computarizada y Resonancia Magnética en el diagnóstico y extensión // Inverted Papilloma, the importance of Computed Tomography and Magnetic Resonance in diagnosis and extension

Ciencia Unemi ◽  
2018 ◽  
Vol 11 (26) ◽  
pp. 150
Author(s):  
Enrique-Javier Lucas ◽  
Alma Amalia Grinstein ◽  
Jorge Cervantes-Coka ◽  
Diana Montoya-Estrada ◽  
Agostina Bonzani ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Maxillary Sinus ◽  
Inverted Papilloma ◽  
Nasal Fossa ◽  
Imaging Method ◽  
History Of ◽  
The Right ◽  
Expansive Lesion

Demostrar la importancia de la Tomografía computarizada (TC) y Resonancia Magnética (RM) en el diagnóstico, extensión y seguimiento de los pacientes con papiloma invertido (PI). Paciente femenino de 64 años, con antecedentes de sinusitis alérgica recurrente, que consulta por obstrucción nasal bilateral a predominio izquierdo, asociada a rinorrea purulenta y rinolalia de cinco meses de evolución. Se le realiza TC y RM de Macizo Cráneo facial (MCF). La TC demuestra formación de densidad de partes blandas ubicada en fosa nasal y seno maxilar derecho que se extiende hacia celdillas etmoidales bilaterales, seno frontal y seno esfenoidal derecho. La RM evidencia lesión expansiva sólida ubicada sobre seno maxilar derecho, que se extiende excavando la pared interna del mismo hacia fosa nasal homolateral. El PI es una neoplasia nasal que se caracteriza por su crecimiento invertido hacia el estroma. Es un tumor benigno que presenta una incidencia anual del 1 % promedio por cada 100.000 habitantes. La TC es el método imagenológico de elección para el diagnóstico de PI, siendo también útil en la valoración de la extensión en la fase preoperatoria. El diagnóstico de certeza lo determina la histopatología. La RM representa un método de gran utilidad en el seguimiento postoperatorio. AbstractDemonstrating the importance of Computed Tomography (CT) and Magnetic Resonance (MRI) in the diagnosis, extension and follow-up of patients with inverted papilloma (IP) of a 64-year-old female patient with a history of recurrent allergic sinusitis who consults for bilateral nasal obstruction and left predominance associated with purulent rhinorrhea and rhinolalia of five months of evolution. CT and MRI of CranioFacial Massif (CFM) were performed. CT demonstrated soft tissue density formation located in the nasal fossa and right maxillary sinus extending to bilateral ethmoidal cells, frontal sinus and right sphenoid sinus. MRI showed solid expansive lesion located on the right maxillary sinus, extending through its inner wall to the homolateral nasal fossa. IP is a nasal neoplasm that is characterized by its inverse growth towards the stroma. It is a benign tumor that presents an annual incidence of 1% average per 100,000 inhabitants. CT is the imaging method of choice for the diagnosis of IP, and it is also useful in assessing extension in the preoperative phase. A thorough diagnosis is determined by histopathology. MRI represents a very useful method in postoperative follow-up.

scholarly journals Role of multidetector computed tomography in evaluation of abdominal trauma in Sothern Rajasthan, India

2019 ◽  
Vol 7 (6) ◽  
pp. 2350
Author(s):  
Puran . ◽  
Narendra Kumar Kardam
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Abdominal Trauma ◽  
Imaging Modality ◽  
Abdominal Injury ◽  
Male Predominance ◽  
Ct Findings ◽  
Highly Sensitive

Background: Abdominal injury constitutes a significant portion of all blunt and penetrating body injuries. Computed   tomography is an important and fast technique which gives rapid information on the type of abdominal injury and helps in management of the patient accordingly. The aim of the present study was to evaluate the usefulness of Multidetector Computed Tomography (MDCT) in detection of intra-abdominal injury in patients with blunt abdominal trauma and to provide information that could accurately determine choice of management (non- operative versus operative). And to correlate the computed tomography (CT) findings with either clinical observation, follow up CT scan (if required) or surgical findings (wherever applicable).Methods: A total of 50 patients with abdominal trauma who underwent computed tomography (CT) examination were included. CT findings were compared with surgical findings in operated cases, and in the rest CT findings were compared by clinical outcome.Results: Among the 50 cases studied, all 50 had positive CT findings of abdominal trauma, out of which 24 patients underwent surgery and the remaining were managed conservatively. The age group of the patients was ranging from 8 to 66 years with male predominance. In this study the commonest organs affected were liver and spleen accounting for 48% and 44% respectively.Conclusions: Computed tomography is an important and highly sensitive imaging modality for diagnosis of organ injuries in patients with abdominal trauma and accordingly deciding the management of patient.

Cardiac Computed Tomography and Magnetic Resonance Imaging of the Tricuspid Valve: Preprocedural Planning and Postprocedural Follow-up

2022 ◽  
Vol 11 (1) ◽  
pp. 27-40
Author(s):  
Bernardo B.C. Lopes ◽  
Go Hashimoto ◽  
Vinayak N. Bapat ◽  
Paul Sorajja ◽  
Markus D. Scherer ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Tricuspid Valve ◽  
Cardiac Computed Tomography ◽  
Resonance Imaging

Imaging Techniques

2018 ◽  
pp. 75-88
Author(s):  
Daniel C. O’Brien ◽  
Junjuian Huang ◽  
Scott A. Resnick
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Multidetector Ct ◽  
Imaging Techniques ◽  
Cone Beam Ct ◽  
Digital Subtraction ◽  
Interventional Radiologist ◽  
Multidetector Ct Angiography

Minimally invasive interventional radiographic procedures rely on many of the same imaging techniques as are used in diagnostic studies. This chapter describes the imaging modalities most commonly utilized by the interventional radiologist intraprocedurally. These include fluoroscopy, digital subtraction angiography (DSA), sonographic techniques for percutaneous interventions and intravascular ultrasound, and computed tomography (CT) and cone beam CT (CBCT). Imaging techniques used adjunctively in the procedure planning and follow-up phases are also briefly reviewed, including multidetector CT angiography, magnetic resonance angiography (MRA), and sonographic vascular evaluation. Specific interventions are mentioned throughout as a means of illustrating the clinical utilities of these imaging techniques, although specific procedural considerations are discussed more thoroughly elsewhere.

scholarly journals Dandy–Walker syndrome associated with syringomyelia in an adult: a case report and literature review

2019 ◽  
Vol 47 (4) ◽  
pp. 1771-1777
Author(s):  
Nan Zhang ◽  
Zhenyu Qi ◽  
Xuewen Zhang ◽  
Fangping Zhong ◽  
Hui Yao ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Endoscopic Third Ventriculostomy ◽  
Rare Condition ◽  
Third Ventriculostomy ◽  
Resonance Imaging ◽  
Adult Case ◽  
History Of ◽  
Memory Deterioration

Dandy–Walker syndrome associated with syringomyelia is a rare condition, with few reports of adult cases. We describe an adult case of Dandy–Walker syndrome with concomitant syringomyelia. A 33-year-old man presented with a 3-month history of walking instability, numbness in the hands, memory deterioration, and urinary incontinence. A physical examination showed a positive Romberg sign. Brain computed tomography and magnetic resonance imaging showed hydrocephalus, a cyst in the posterior fossa, absence of the cerebellar vermis, hypoplasia of the corpus callosum and cerebella, and syringomyelia. All of these symptoms were consistent with the diagnosis of Dandy–Walker syndrome. Surgery involving arachnoid adhesiolysis and endoscopic third ventriculostomy was performed. At the 6-month follow-up, the symptoms were completely relieved. Magnetic resonance imaging showed that syringomyelia was greatly reduced and the hydrocephalus remained unchanged. Dandy–Walker syndrome with concomitant syringomyelia in adults is exceedingly rare. Early diagnosis and appropriate surgical treatment of this condition should be highlighted. Combined arachnoid adhesiolysis and endoscopic third ventriculostomy may be an effective approach.

scholarly journals Actinomyces graevenitziiPulmonary Abscess Mimicking Tuberculosis in a Healthy Young Man

2014 ◽  
Vol 21 (6) ◽  
pp. e75-e77 ◽  
Author(s):  
Smaranda Gliga ◽  
Mathilde Devaux ◽  
Marine Gosset Woimant ◽  
Dominique Mompoint ◽  
Christian Perronne ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Lung Cancer ◽  
Bronchoalveolar Lavage Fluid ◽  
Lavage Fluid ◽  
Clinical Samples ◽  
High Dose ◽  
Pulmonary Actinomycosis ◽  
History Of ◽  
Right Lobe

Pulmonary actinomycosis is a rare disease that is often misdiag-nosed as tuberculosis or lung cancer.Actinomyces graevenitziiis a relatively new recognizedActinomycesspecies isolated from various clinical samples. The authors report a case of pulmonary actinomycosis caused byA graevenitzii. A computed tomography examination revealed an excavated consolidation in the middle right lobe of a previously healthy young man who presented with a long history of moderate cough. Cultures of the bronchoalveolar lavage fluid confirmed the diagnosis of pulmonary abscess caused byA gravenitzii. At the three-month follow-up consultation and, after six weeks of high-dose amoxicillin, the pulmonary lesion had completely disappeared.

scholarly journals Computed Tomography Perfusion, Magnetic Resonance Imaging, and Histopathological Findings After Laparoscopic Renal Cryoablation: An In Vivo Pig Model

2016 ◽  
Vol 16 (4) ◽  
pp. 406-413 ◽  
Author(s):  
Tommy Kjærgaard Nielsen ◽  
Øyvind Østraat ◽  
Ole Graumann ◽  
Bodil Ginnerup Pedersen ◽  
Gratien Andersen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Central Zone ◽  
Peripheral Zone ◽  
Scar Tissue ◽  
Resonance Imaging ◽  
Computed Tomography Perfusion ◽  
Laparoscopic Assisted

The present study investigates how computed tomography perfusion scans and magnetic resonance imaging correlates with the histopathological alterations in renal tissue after cryoablation. A total of 15 pigs were subjected to laparoscopic-assisted cryoablation on both kidneys. After intervention, each animal was randomized to a postoperative follow-up period of 1, 2, or 4 weeks, after which computed tomography perfusion and magnetic resonance imaging scans were performed. Immediately after imaging, open bilateral nephrectomy was performed allowing for histopathological examination of the cryolesions. On computed tomography perfusion and magnetic resonance imaging examinations, rim enhancement was observed in the transition zone of the cryolesion 1week after laparoscopic-assisted cryoablation. This rim enhancement was found to subside after 2 and 4 weeks of follow-up, which was consistent with the microscopic examinations revealing of fibrotic scar tissue formation in the peripheral zone of the cryolesion. On T2 magnetic resonance imaging sequences, a thin hypointense rim surrounded the cryolesion, separating it from the adjacent renal parenchyma. Microscopic examinations revealed hemorrhage and later hemosiderin located in the peripheral zone. No nodular or diffuse contrast enhancement was found in the central zone of the cryolesions at any follow-up stage on neither computed tomography perfusion nor magnetic resonance imaging. On microscopic examinations, the central zone was found to consist of coagulative necrosis 1 week after laparoscopic-assisted cryoablation, which was partially replaced by fibrotic scar tissue 4 weeks following laparoscopic-assisted cryoablation. Both computed tomography perfusion and magnetic resonance imaging found the renal collecting system to be involved at all 3 stages of follow-up, but on microscopic examination, the urothelium was found to be intact in all cases. In conclusion, cryoablation effectively destroyed renal parenchyma, leaving the urothelium intact. Both computed tomography perfusion and magnetic resonance imaging reflect the microscopic findings but with some differences, especially regarding the peripheral zone. Magnetic resonance imaging seems an attractive modality for early postoperative follow-up.

scholarly journals ANTERIOR ABDOMINAL WALL ENDOMETRIOMA: A DIAGNOSTIC CHALLENGE

2016 ◽  
Vol 3 (2) ◽  
pp. 44-46
Author(s):  
Salamat Khan ◽  
Krishna Bhasyal ◽  
Bhusan Raj Timilsina
Keyword(s):  
Computed Tomography ◽  
Abdominal Wall ◽  
Anterior Abdominal Wall ◽  
Lower Abdominal Pain ◽  
Radical Resection ◽  
Rectus Abdominis Muscle ◽  
Medical Sciences ◽  
Diagnostic Challenge ◽  
History Of

We are reporting a case of abdominal wall endometrioma (AWE) in a 32-year-old woman who had an 8 months history of lower abdominal pain and lump. The physical examination revealed an ill-defined mass without tenderness. Computed tomography (CT) showed an enhancing is odense mass at the level of umbilicus right to mid line in right rectus abdominis muscle. The patient was treated with a wide radical resection with a 1 cm margin. There was no postoperative complication. The histological examination confirmed endometriosis. The patient is now on regular follow-up and doing well without any recurrence, five months after her operation.Journal of Universal College of Medical Sciences (2015) Vol.03 No.02 Issue 10Page: 44-46 

scholarly journals Multifocal Dysembryoplastic Neuroepithelial Tumour with Intradural Spinal Cord Lipomas: Report of a Case

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Richard D. White ◽  
Avinash K. Kanodia ◽  
Esther M. Sammler ◽  
John N. Brunton ◽  
Craig A. Heath
Keyword(s):  
Computed Tomography ◽  
Spinal Cord ◽  
Magnetic Resonance ◽  
Natural History ◽  
Mr Imaging ◽  
Temporal Lobe Epilepsy ◽  
Imaging Findings ◽  
History Of ◽  
Thoracic Cord ◽  
Brown Sequard Syndrome

We report a case of temporal lobe epilepsy and incomplete Brown-Sequard syndrome of the thoracic cord. Computed tomography and magnetic resonance (MR) imaging showed multiple supratentorial masses with the classical radiological appearances of multifocal dysembryoplastic neuroepithelial tumour (DNET). Spinal MR imaging revealed intradural lipomas, not previously reported in association with multifocal DNET. Presentation and imaging findings are discussed along with classification and natural history of the tumour.

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