Utilizare inovatoare a senzorilor de orientare cu posibilă aplicaţie în proceduri urologice laparoscopice sau percutanate care implică terapia focală

Petrufl, B.; Hogea, M.; Feflea, D.; Schiţcu, V.
October 2012
Romanian Journal of Urology;2012, Vol. 11 Issue 4, p35
Academic Journal
Introduction: Attitude tracking is a method for orientation estimation using sensors. Recent technical developments, coupled with increased sensitivity and lower costs, make for an attractive solution for problems current in medical situations. This paper serves as a proof of concept that attitude tracking can aid in the guidance of specific diagnostic or treatment procedures, as well as proposing a sensing device. An experimental model was designed for assessment and comparison with a control. Materials and method: The sensing device allows the selection of 2 given angles of inclination and indicates the bisectrix. Coupled with an ultrasound probe, it helps determine the exact angled plane at which a centered puncture should be realized. The experimental model consisted of several symmetric objects suspended in gelatin. The device, coupled with the ultrasound probe and a needle guide, were handled by an experienced surgeon. The needle was aimed at the center of the objects, with and without attitude aid. The distance from needle tip to geometric centre was recorded, as was procedure duration. A paired student t-test was performed. Results: 40 punctures were performed. In orientation-aided cases, mean distance from centre was 1.0mm, standard deviation 0.743mm, puncture time 7.2s. In the control, the mean distance from centre was 3.20mm, standard deviation 2.38mm, average puncture time 5.3s. P-value was <0.001. Conclusions: Attitude tracking is a promising direction for improving ultrasound guided diagnostic or therapeutic procedures' precision. Our device successfully improved the results of an experienced surgeon, at the small cost of increased procedure time.


Related Articles

  • Use of Renal Ultrasound to Detect Hydronephrosis After Ureteroscopy. Jules P. Manger; Pierre J. Mendoza; Richard K. Babayan; David S. Wang // Journal of Endourology;Sep2009, Vol. 23 Issue 9, p1399 

    AbstractIntroduction:Ureteral obstruction is a potentially serious complication after ureteroscopy. Postoperative imaging with intravenous urogram and CT has been described as a means to detect asymptomatic or �silent� obstruction. We sought to evaluate the use of renal ultrasound to...

  • Condition-specific coding: the key to billing for U/S.  // Contemporary OB/GYN;Sep2002, Vol. 47 Issue 9, p112 

    Reveals that because of the small variety of closely related ultrasound (U/S) codes, successful billing for more than one U/S depends on the diagnosis and documentation. Percentage of women that have an U/S sometime during their pregnancy; Information on 76805, the most commonly used U/S code;...

  • Diagnostic Value Of Ultrasonography On Negative Appendectomy And Perforation In Children. Adetiloye, V. A.; Al'Damegh, Saleh // Internet Journal of Radiology;2004, Vol. 3 Issue 2, p1 

    We prospectively evaluated the impact of ultrasound (US) in the outcome of appendectomy findings in children. We analyzed the clinical data of 96 consecutive patients who had appendectomy following clinical suspicion of acute appendicitis. Pre-op US was performed in 60 patients while 36 patients...

  • Dissecting Aneurysm of the Infrarenal Abdominal Aorta--A Case Report. J�rgensen, Lisbeth; Lindewald, Helle; Lorentzen, J�rgen E. // Vascular Surgery;Jan/Feb1989, Vol. 23 Issue 1, p63 

    One case of primary dissecting aneurysm of the infrarenal abdominal aorta, diagnosed by ultrasound scanning, computed tomography, and angiography, is presented. Etiology, incidence, and diagnosis of abdominal aortic dissection are discussed, and a survey of the literature is included.

  • Sonographically guided 11-G directional vacuum-assisted breast biopsy as an alternative to surgical excision: utility and cost study in probably benign lesions. Alonso-Bartolomé, P.; Vega-Bolívar, A.; Torres-Tabanera, M.; Ortega, E.; Acebal-Blanco, M.; Garijo-Ayensa, F.; Rodrigo, I.; Muñoz-Cacho, P.; Alonso-Bartolomé, P; Vega-Bolívar, A; Muñoz-Cacho, P // Acta Radiologica;Jul2004, Vol. 45 Issue 4, p390 

    Purpose: To evaluate the utility and economic costs of the 11-G vacuum-assisted biopsy probe under ultrasound (US) guidance as an alternative to surgical excision in patients with probably benign lesions. Material and Methods: US-guided 11-G vacuum-assisted biopsy was...

  • Fetal MR imaging of Kniest dysplasia. Yazici, Zeynep; Kline-Fath, Beth M.; Laor, Tal; Tinkle, Bradley T. // Pediatric Radiology;Mar2010, Vol. 40 Issue 3, p348 

    We present a case of Kniest dysplasia, a rare form of the type II collagenopathies, with prenatal MRI. Sonography revealed only short limbs in the fetus. Fetal MRI findings included enlarged hyaline cartilaginous structures with abnormally high T2 signal intensity, delayed ossification of the...

  • Speckle Reducing Contourlet Transform for Medical Ultrasound Images. Hiremath, P. S.; Akkasaligar, Prema T.; Badiger, Sharan // International Journal of Computer & Information Engineering;Oct2010, Vol. 4 Issue 4, p284 

    Speckle noise affects all coherent imaging systems including medical ultrasound. In medical images, noise suppression is a particularly delicate and difficult task. A tradeoff between noise reduction and the preservation of actual image features has to be made in a way that enhances the...

  • Echoes. Weston, Michael J // Ultrasound;Aug2008, Vol. 16 Issue 3, p178 

    The article highlights several studies related to radiology. These include the consensus report on potential bioeffects of diagnostic ultrasound by the American Institute of Ultrasound in Medicine, the screening for trisomy 21 by maternal age, fetal nuchal translucency thickness, free beta-human...

  • Contrast Enhanced Ultrasound for the evaluation of Focal Liver Lesions in daily practice. A multicentre study. Sporea, Ioan; Badea, Radu; Martie, Alina; Dumitru, Eugen; Ioaniţescu, Simona; Şirli, Roxana; Socaciu, Mihai; Popescu, Alina; Dănilă, Mirela; Voiculescu, Mihai // Medical Ultrasonography;Jun2012, Vol. 14 Issue 2, p95 

    Background and aim: Development of contrast specific ultrasound techniques and introduction of the second-generation ultrasound contrast agents have improved the ability of this technique in detecting and characterizing focal liver lesions (FLLs). The purpose of this study was to present the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics