طراحي و بررسي قدرت نرم افزارCCTA در تشخيص نوع ناهنجاري

Designing and studying the efficiency of the CCTA software in diagnosis of malocclusions

خلاصه: سابقه وهدف: باتوجه به فراواني ناهنجاريها و اهميت تشخيص انها ومشكلات فعلي تشخيص انها،مخصوصاصرف وقت زياد جهت اناليز سفالومتري وبراي پاسخ به اين سوال كه ايا نرم افزار طراحي شده (Sheibani Version3 CCTA-ShV3 :Computerized Cephalometry Tracer & Analyser) نسبت به روش استاندارد فعلي قادر به تشخيص مال اكلوژن مي باشد،اين تحقيق بر روي راديوگرافيهاي سفالومتري بيماران مبتلا به ناهنجاريهاي Cl lll ,Cl ll , Cl l در سالهاي 1386-1387 انجام گرفت. مواد وروشها:تحقيق به روش كار آزمايي باليني از نوع تشخيصي انجام گرفت.بعد از طراحي نرم افزار CCTA و تريسينگهاي مستمر تعداد 120 نمونه بدست آورديم كه شامل 40 عدد ناهنجاري Cl l ، 40 عدد ناهنجاري Cl ll و40 عدد ناهنجاري Cl lll بود.براي هر عكس يك كد گذاشته شد و همه اطلاعات مربوط به هر نمونه در فرم اطلاعاتي شماره 1 ثبت گرديد.كاربر بدون اطلاع از محل لندماركهاي قبلي كه به روش دستي تريس شده بود شروع به گذاشتن لندماركها كرد و بوسيله نرم افزار CCTAمجددا كلاس انها تعيين شد و در فرم شماره2 ثبت شد.تشخيص نرم افزار نسبت به تشخيص قطعي، حساسيت واختصاصيت و به ويژه ارزش پيش بيني مثبت و منفي positive and negative predictive value محاسبه شد. يافته ها: تعداد 120 نمونه بدست آمد، بطوريكه به تعداد40 عدد Cl l،40عدد , Cl ll40عدد Cl lll داشتيم.پس از مقايسه كامل روش دستي و نرم افزاري ، براي هر 3 گروه حساسيت sensitivity))،اختصاصيت (specificity) ،ارزش پيش بيني مثبت ppv ،ارزش پيش بيني منفي NPV و كارايي كلي نرم افزار 100% محاسبه شد . بحث و نتيجه گيري: با توجه به دقت وتلاش زيادي كه براي ساخت اين نرم افزار داشتيم و همچنين تعداد نمونه هاي گرفته شده در اين تحقيق، جامع بودن ان و همچنين حساسيت واختصاصيت 100% نرم افزار، نرم افزارCCTA جايگزين بسيار خوبي، بلكه بهتر بجاي روش دستي است!

Abstract: Background and aim: Due to having a lot of malocclusions and the importance of diagnosis of them and specially the present problem of diagnosis such as spending a lot of time to analyse the cephalometry and for answer to this question which can the designed software) CCTA :Computerized Cephalometry Tracer & Analyser(than standard method diagnoses the malocclusions .this research has been done on lat cephalometries which belonged to patients who had Cl l , Cl ll and Cl ? malocclusions from 1996 until 2008. Materials and Methods: The study was a diagnostic clinical trial design. After designing the CCTA software and continual tracing 120 cases were acquired which 40 were Cl l , 40 were Cl ll and 40 were Cl ?, then placed a code for each case and all of the informations which belonged to each case were registered in the informational form 1.The user started locating the landmarks without knowing anything about the located landmarks which were located previously by manual tracing and the CCTA software analysed the lat cephalometries and also determined the Cl of malocclusions. The informations were registered in the informational form2. Diagnosis of the CCTA software than absolute diagnosis , sensitivity, specificity and also positive and negative predictive value (PPV & NPV) were evaluated. Conclusions: 120 cases were acquired which 40 were Cl l , 40 were Cl ll and 40 were Cl ?. Then after a complete comparing between manual tracing and computerized tracing ; The sensitivity , specificity and also PPV & NPV and total efficiency were evaluated 100%. Results: Due to our efforts to design this software correctly , and for using a lot of numbers of the cases and doing the complete research ,and specificity and sensitivity were 100%, we can strongly say CCTA software not only the successor of the manual tracing but also it is better than it!