Anthropometric measurements of the orbita and gender prediction with three-dimensional computed tomography images

Background: The aim of the study was to investigate the orbital anthropometric variations in the normal population using three-dimensional computed tomography (3D-CT) images and to define the effects of age and gender on orbital anthropometry.Materials and methods: Three-dimensional orbita CT of 280 patients, obtained for various reasons, were retrospectively evaluated in 772-bed referral and tertiary-care hospital between April 2011 and June 2012. Using 3D images, orbital width, height, biorbital-interorbital diameter and orbital index were measured. Measurements were obtained comparing right and left sides and male to female. The relation of the results with age and gender was analysed.Results: Right orbit was found to be wider than left (p < 0.0001). Male patients had wider (p < 0.0001) and higher (p = 0.0001) orbits. Right orbital index was found to be smaller than the left one (p = 0.005). No differences were found between the genders in terms of right and left orbital indexes (p > 0.05). Biorbital (p < 0.0001) and interorbital (p = 0.01) widths were found to be higher in males. There was no relation between the age change and the parameters defined (p > 0.05).Conclusions: No relation was found between age and orbital measurements. It was concluded that orbital images obtained with 3D-CT may be used as a method for gender evaluation

Anatomic assessment of the left main bifurcation and dynamic bifurcation angles using computed tomography angiography

Background: An understanding of the left main coronary artery (LMCA) anatomy is important for accurate diagnosis and therapy. We aimed to investigate LMCA anatomy via 128-multisliced coronary computed-tomography-angiography (CCTA) in patients with normal LMCA. Materials and methods: A total of 201 CCTA studies were included in this study. Anatomical features of LMCA including cross-sectional areas of the LMCA ostial, LMCA distal, left anterior descending artery (LAD) ostial and left circumflex artery (LCX) ostial, and degree of tapering and LMCA bifurcation angles (BA) in the form of LMCA-LCX BA, LMCA-LAD BA, LAD-LCX BA at end-diastole and end-systole. Results: The mean age was 55 ± 11; 55.7% of patients were males. Right coronary artery was dominant in 173 (86.1%) patients. Mean LMCA length was 10.0 ± 4.5 mm. The mean values of LMCA ostial, LMCA distal, LAD ostial and LCX ostial areas were 18.2 ± 5.1 mm2, 13.2 ± 4.0 mm2, 9.0 ± 3.2 mm2 and 7.6 ± ± 2.8 mm2, respectively. LMCA ostial-distal area, LMCA distal-LAD ostial area and LMCA distal-LCX ostial area ratios were ≥ 1.44 – < 1.69 in 47 (23.4%), 53 (26.4%), 47 (23.4%) patients, respectively, and were ≥ 1.69 – < 1.96 in 19 (9.5%), 24 (11.9%), 40 (19.9%) patients respectively. Systolic motion modifies LMCA BAs; systolic motion begets an increment of LMCA-LAD angle in 72.6% of patients and decrement of LAD-LCX angle in 75.6% of patients. Patients with T-shaped LAD-LCX BA was shown to have significantly longer LMCA, larger LAD ostial area, larger LCX ostial area and higher diastolic-to-systolic range (DSR) of LAD-LCX BA compared to patients with Y-shaped LAD-LCX BA. Conclusions: LMCA with T-shaped distal BA was found to have significantly longer LMCA, larger LAD ostial area, larger LCX ostial area and higher DSR of distal BA compared to patients with Y-shaped distal BA. These findings may provide useful information for LMCA bifurcation stenting or designing dedicated stents for LMCA

SMA actuated prosthetic finger design [SHA Eyleyicili Protez Parmak Tasarimi]

20th National Biomedical Engineering Meeting, BIYOMUT 2016 -- 3 December 2016 through 5 December 2016 -- -- 126457The proposed work will cover a mechanical design that imitates natural shape and posture of anatomic finger and design of Shape Memory Alloy (SMA) actuators that mimics natural functions of a finger. The best mechanical finger design lies in imitating the complex structure (anatomy) of the human finger with all its bones, joints, muscles, tendons and their connections as close as possible. At this point shape memory alloys are good potential with its muscle like working principles, SMA actuators are placed on phalanges to provide finger movements. © 2016 IEEE

Feasibility studies for imaging e+^{+}e−^{-} annihilation with modular multi-strip detectors

Studies based on imaging the annihilation of the electron (e$^{-}$) and its antiparticle positron (e$^{+}$) open up several interesting applications in nuclear medicine and fundamental research. The annihilation process involves both the direct conversion of e$^{+}$e$^{-}$ into photons and the formation of their atomically bound state, the positronium atom (Ps), which can be used as a probe for fundamental studies. With the ability to produce large quantities of Ps, manipulate them in long-lived Ps states, and image their annihilations after a free fall or after passing through atomic interferometers, this purely leptonic antimatter system can be used to perform inertial sensing studies in view of a direct test of Einstein equivalence principle. It is envisioned that modular multistrip detectors can be exploited as potential detection units for this kind of studies. In this work, we report the results of the first feasibility study performed on a e$^{+}$ beamline using two detection modules to evaluate their reconstruction performance and spatial resolution for imaging e$^{+}$e$^{-}$ annihilations and thus their applicability for gravitational studies of Ps

Treated with Hymen Sparing Surgery in Familial Imperforate Hymen

Imperforate hymen is a rare congenital female genital tract obstructive pathology. Although It is generally sporadic and isolated, very rare familial occurrence cases have been published in the literature. We present a rare case of the familial occurrence of IH and its surgical treatment. This case was admitted to our clinic with chronic pelvic pain, difficulty urination and pelvic mass. After the gynecologic examination and ultrasound view, the diagnosis of IH was made.  Her sister who two years older than she had been previously evaluated for amenorrhea and her sister had undergone surgical procedures for IH. Because of Hymen is an important symbol of virginity in family culture, hymen sparing surgery was performed. The familial occurrence of IH is a rare condition and very few reported cases in the literature. Hymenectomy can cause social retraction in cases therefore hymen sparing surgery is an important surgery, especially Muslim cultures.</jats:p

Obstetric scar endometriosis: Retrospective study on 19 cases and review of the literature

Endometriosis is defined as the presence of functioning endometrial tissue outside the uterine cavity.This disease is one of themost common gynecologic disorders in reproductive age women. It generally occurs in pelvic cavity. But extrapelvic location has been defined (such as extremities, central nervous system, lungs, pleurae, liver, umbilicus, pericardium, urinary tract, intestines, and surgical scar tissue). Scar endometriosis is a rare disease and defined as presence of endometriotic lesions on the abdominal (such as cesarean section and hysterectomy) or vaginal (episiotomy) excision line. It is difficult to diagnose due to the extreme variability in presentation.The symptoms are nonspecific, typically involving pain, swelling at the incision site at the time of menstruation. Excision and histopathologic examination are necessary for diagnosis.We present a case series of obstetric scar endometriosis and review of the literature. © Copyright 2014 Mustafa Kaplanoglu et al

Anthropometric measurements of the orbita and gender prediction with three-dimensional computed tomography images

toprak, ugur/0000-0002-1244-2485; Deveer, Mehmet/0000-0003-3836-0688WOS: 000348431200007PubMed ID: 24902092Background: The aim of the study was to investigate the orbital anthropometric variations in the normal population using three-dimensional computed tomography (3D-CT) images and to define the effects of age and gender on orbital anthropometry. Materials and methods: Three-dimensional orbita CT of 280 patients, obtained for various reasons, were retrospectively evaluated in 772-bed referral and tertiary-care hospital between April 2011 and June 2012. Using 3D images, orbital width, height, biorbital-interorbital diameter and orbital index were measured. Measurements were obtained comparing right and left sides and male to female. The relation of the results with age and gender was analysed. Results: Right orbit was found to be wider than left (p 0.05). Biorbital (p 0.05). Conclusions: No relation was found between age and orbital measurements. It was concluded that orbital images obtained with 3D-CT may be used as a method for gender evaluation