Volume : 7, Issue : 12, December - 2018

MRI EVALUATION OF ORBITAL TUMOURS

Dr. Prajwaleet Gour, Dr. Abhisek Jaiswal

Abstract :

<p>&nbsp;</p> <p class="MsoNormal" style="margin:0in;margin-bottom:.0001pt;text-align:justify;&#10;line-height:200%"><span style="font-size:12.0pt;line-height:200%;font-family:&#10;&quot;Arial&quot;,&quot;sans-serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;">The orbit and the visual system form the most important sense organ in humans. <o:p></o:p></span></p> <p class="MsoNormal" style="margin:0in;margin-bottom:.0001pt;text-align:justify;&#10;line-height:200%"><span style="font-size:12.0pt;line-height:200%;font-family:&#10;&quot;Arial&quot;,&quot;sans-serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;">Multiple disease entities affect the orbit, viz. congenital, inflammatory, infectious, vascular and traumatic. The clinical manifestations and findings are often non-specific, being protean and overlapping. Of these various pathologies, tumors are an important cause of mortality and especially, morbidity. <o:p></o:p></span></p> <p class="MsoNormal" style="margin:0in;margin-bottom:.0001pt;text-align:justify;&#10;line-height:200%"><span style="font-size:12.0pt;line-height:200%;font-family:&#10;&quot;Arial&quot;,&quot;sans-serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;">Plain radiographs permit the separation of the two attenuation values as bone and soft tissue. Sonography may be helpful in specific cases, but has many drawbacks and limitations with high operator dependence. Computed tomography may allow separation of the air, fat, fluid, soft tissue and bone. Direct axial and coronal imaging is also possible. In many cases, however it is limited by artifacts from bone. <o:p></o:p></span></p> <p class="MsoNormal" style="margin:0in;margin-bottom:.0001pt;text-align:justify;&#10;line-height:200%"><span style="font-size:12.0pt;line-height:200%;font-family:&#10;&quot;Arial&quot;,&quot;sans-serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;">Magnetic resonance imaging is non-ionizing, avoids harmful radiation to the lens. Excellent soft tissue details and multi-planar imaging is feasible. Bony artifacts are not seen and vessels can be identified by the contained flow void.<o:p></o:p></span></p> <p class="MsoNormal" style="margin:0in;margin-bottom:.0001pt;text-align:justify;&#10;line-height:200%"><span style="font-size:12.0pt;line-height:200%;font-family:&#10;&quot;Arial&quot;,&quot;sans-serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;">In our present study, we have evaluated 50 patients with suspected orbital tumors. An attempt has been made to devise an optimum imaging protocol in a given group of disorders. It also compares the reliability of Magnetic Resonance Imaging in diagnosis by comparing it with histopathological diagnosis.<o:p></o:p></span></p>