research centers


Search results: Found 5

Listing 1 - 5 of 5
Sort by

Article
Assessment of mandibular third molar position by using computed tomography and reconstructed lateral radiograph

Authors: Istabraq M. Mohamed --- Nidhal H. Ghaib نضال حسين غايب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 2 Pages: 104-107
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Background: Consideration of mandibular third molar is important from orthodontic perspective due to severalfactors such as, lower anterior arch crowding, relapse in lower anterior region, interference with uprighting ofmandibular first and second molars during anchorage preparation and molar distalization. The aims of this studywere to assess of gender differences in the mandibular third molar position and compare and evaluate whetherthere is any differences in the results provided by CT scan and lateral reconstructed radiograph.Materials and Methods: The sample of present study consisted of 39 patients (18 males and 21 females) with agerange 11-15 years. CT images for patients who were attending at Al Suwayra General Hospital/the ComputerizedTomography department. Computed tomographic images were obtained for The distance from Xi point to distalsurface of permanent mandibular second molar was measured in both three dimensional volumetric images andtwo dimensional CT derived lateral image. The statistical analyses included: means, standard deviations. Paired t-testwas used to compare between the two methods and independent t-test was used in verifying the gendersdifference.Results: The results showed that there was high significant method difference between 3D CT and 2D image andgender differences was observed in values of linear measurements of present study, as males showed higher meanvalues than females.Conclusion: There is high accuracy of measurement on CT images, so CT scan is advisable during the diagnosis andtreatment plan of orthodontic cases


Article
Prevalence and localization of the posterior superior alveolar artery in relation to the floor of the maxillary sinus and alveolar crest among sample of Iraqis using computed tomography

Authors: Abdullah Ahmed Ibrahim عبدالله احمد ابراهيم --- Lamia H. Al Nakib لمياء حامد النقيب
Journal: Journal of baghdad college of dentistry مجلة كلية طب الاسنان بغداد ISSN: 16800087 Year: 2017 Volume: 29 Issue: 3 Pages: 54-58
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Background: Posterior superior alveolar artery (PSAA) is branch of the maxillary artery. It usually supplies the lateral wall of the sinus and overlying membrane. Evaluation and awareness of the anatomy of maxillary sinus before surgery is crucial to avoid surgical complications. The aim of this study is to examine the prevalence, location of the (PSAA) in relation to the floor of the maxillary sinus and alveolar crest using computerized tomography (CT) scans.Materials and Methods: This study included 180 Iraqi subjects (99 males and 81 females) with age more than 16 years old. CT scans for (right and left) Maxillary sinuses were done for each patient. The information obtained was assessed in a coronal multi planar reconstructions images (MPRs) in order to obtain the following parameters: prevalence rate of PSAA, distance from the lower border of the artery to the: alveolar crest, the floor of the sinus and the medial sinus wall.Results: The prevalence of PSAA on CT images was 73.61% among total sample. Distance from the lower border of the artery to the alveolar crest was (18.42± 4.07) mm, and to the sinus floor was (8.99 ±3.86) mm and to the medial sinus wall was (12.68 ± 2.81) mm.Conclusions: CT scan is valuable tool in evaluation and localization of the PSAA before maxillary sinus surgery


Article
Evaluation Performance of Iterative Algorithms for 3D Image Reconstruction in Cone Beam Geometry

Authors: Noor H. Fallooh Al-anbari --- Mohammed H. Ali Al-Hayani
Journal: AL-NAHRAIN JOURNAL FOR ENGINEERING SCIENCES مجلة النهرين للعلوم الهندسية ISSN: 25219154 / eISSN 25219162 Year: 2017 Volume: 20 Issue: 1 Pages: 149-157
Publisher: Al-Nahrain University جامعة النهرين

Loading...
Loading...
Abstract

Algebraic reconstruction technique (ART) is iterative reconstruction algorithm using for reconstructing the two dimension (2D) and three dimension (3D) images. In this research different algorithms of ART were used to reconstruction : (simple ART, Simultaneous ART, and Multiplicative ART) for reconstruction 3D image using multi slice scanner in cone beam geometry. To perform the time reconstruction of ART algorithms, use the Maximum-Likelihood Expectation Maximization (ML-EM) algorithm to fast ART algorithm. Multi slice Computed Tomography CT scanner newly discovered and used widely in the medical field for diagnosis and radiographic to its benefit from the speed of scanner and quality of image reconstruction comparing with single slice scanner. In simulation result the Multiplicative ART (MART) algorithm with suitable relaxation parameter


Article
Efficacy and Safety of Ultrasound Guided Extracorporeal Shock Wave Lithotripsy (SONO ESWL) In Patients with Radiopaque Renal Stone

Author: Wadhah Abbas Al-Marzooq
Journal: Medical Journal of Babylon مجلة بابل الطبية ISSN: 1812156X 23126760 Year: 2017 Volume: 14 Issue: 2 Pages: 361 -367
Publisher: Babylon University جامعة بابل

Loading...
Loading...
Abstract

To assess the advantages and disadvantages of using ultrasound to guide ESWL in patients with radiopaque renal stone. This study included 80 patients with radiopaque renal stone who visited the ESWL unit in urology department at Hillah teaching hospital. Thirty-eight of those patients underwent US guided ESWL while in the other 42 patients the procedure done under fluoroscopy control. The results, complications and operative time were compared between both groups.Both groups were comparable regarding stone size, site and body mass index. Operative time was significantly longer in group 2, there was no significant difference regarding passage of gravels, stone free rate, postoperative hematuria and loin pain between both groups. Therefore, we conclude that even in patients with radiopaque stones, ultrasound can be used to guide ESWL as effectively as fluoroscopy, without any risk of radiation.


Article
Post-Operative Computed Tomography to Evaluate the Accuracy of Thoracic and Lumbosacral Spine Pedicular Screw Fixation
تقييم دقة موضع مسمار قدم الفقرات باستخدام التصوير المقطعي ما بعد جراحه تثبيت الفقرات الصدرية و القطنية العجزية

Authors: Saif M.Kani سيف محمد كاني --- Ali Bakir. Al-Hilli علي باقر الحلي --- Dawood S. Al-Obidi داود صادق العبيدي
Journal: Journal of the Faculty of Medicine مجلة كلية الطب ISSN: 00419419 Year: 2017 Volume: 59 Issue: 3 Pages: 198-203
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

Background: pedicular screw fixation is rapidly becoming a widely used method of spinal instrumentation. Despite improvement in design of instruments and surgical technique and the use of intra-operative fluoroscopy, pedicle cortical perforations occur endangering nearby neurovascular or extra vertebral structures.Objective: This is a prospective (consecutive cases study) designed for Evaluation of incidence of pedicle screw misplacement in our study sample, compare our results to what is published in literature.Patients and Method: This study involved 25 adult patients ( 10 males and 15 females ) their age ranged between ( 18 and 70 years) who underwent spinal surgery with pedicle screw fixation for different disorders of thoracic and lumbosacral spine with the aid of intraoperative fluoroscopy. Computed Tomography (CT) scan within one month was done for all patients to evaluate the accuracy of pedicle screw placement. Any new neurological symptoms was recorded and correlated with screw misplacement.Results: 122screws inserted in 25 patients with an overall accuracy of (90.16%), frank misplacement of (4.09% )and questionable penetration of ( 5.73%) , new neurological deficit was seen in (20%) among all misplaced screws and in one case (4%) out of the 25 cases.Conclusion: pedicle screw fixation surgery is a demanding procedure. Our incidence of screw misplacement is compatible with the lower published results in the literature. Not all patients with frank penetration of the pedicle cortical outlines developed complications.Keywords: Computed tomography, Pedicular Screw fixation, accuracy.

الخلاصة:خلفية البحث: إن جراحة تثبيت العمود الفقري باستخدام مسمار قدم الفقرات أصبحت من الوسائل الشائعة في جراحه العمود الفقري. رغم التطور الذي في تقنيات و تصاميم وسائل هذه ألجراحه و استخدام التصوير ألشعاعي إثناء هذه ألجراحه لازالت هنالك احتماليه وضع هذا المسمار في غير موضعه الصحيح محدثا ثقوبا في قشره قدم الفقرات مهددا أصابه الأحشاء العصبية و الوعائية ما حول الفقرات.الهدف من الدراسة: تقييم دقه موضع مسمار قدم الفقرات في مجموعه المرضى اللذين شملوا بهذه الدراسة. مقارنه نتائج دراستنا من حيث نسبه عدم ألدقه مع النسب ألمنشوره في الدراسات و البحوث العالمية الأخرى.طريقه الدراسة: في هذه الدراسة تم ضم 25 مريضا بالغين (10 ذكور و 15 إناث), تتراوح أعمارهم مابين (18-70) عاما اللذين خضعوا لجراحه تثبيت العمود الفقري بواسطة مسمار قدم الفقرات لمختلف العلل الجراحية للعمود الفقري في المنطقة الصدرية والقطنية والعجزية , تم إجراء التصوير المقطعي لجميع المرضى خلال شهر واحد ما بعد ألجراحه لتقييم دقه موضع مسمار قدم الفقرات وقد تم تسجيل إي اختلاطات سريريه عصبيه ما بعد ألجراحه.النتائج: لقد تم وضع 122 مسمارا في 25 مريضا وقد كانت النسبة ألعامه لصحة موضع مسمار قدم الفقرات (90,16%) و كانت نسبه عدم الصحة (4,09%) و كانت نسبه (5,73%) غير واضحة و مشكوك في صحة موضعها لقد لوحظ وجود اختلاطات عصبيه في 20%من العدد الكلي للمسامير ,في مريض واحد 4% من أصل 25 مريضا.الاستنتاجات : إن جراحه تثبيت العمود الفقري بواسطة مسمار قدم الفقرات جراحه تتطلب دقه و خبره في هذا المجال, نسبه عدم صحة موضع مسمار قدم الفقرات في دراستنا مقاربه إلى اوطا النسب ألمسجله في الدراسات و البحوث ألمنشوره عالميا.مفتاح الكلمات : التصوير المقطعي ,مسمار قدم الفقرات , الدقه في التثبيت.

Listing 1 - 5 of 5
Sort by
Narrow your search

Resource type

article (5)


Language

English (5)


Year
From To Submit

2017 (5)