<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEdit: A Computer Assisted Image Processing and Navigation System for Orthopedic Trauma Surgery</style></title><secondary-title><style face="normal" font="default" size="100%">ACTA CYBERNETICA-SZEGED</style></secondary-title><short-title><style face="normal" font="default" size="100%">ACTA CYBERN-SZEGED</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">17</style></volume><pages><style face="normal" font="default" size="100%">589 - 603</style></pages><isbn><style face="normal" font="default" size="100%">0324-721X</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEdit Orvosi Képfeldolgozó rendszer használata a mindennapi orvosi gyakorlatban</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Műtéti tervek biomechanikai analízise</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Csongor Halmai</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Medence- és Acetabulum-törések Baleseti Mechanizmusainak Animálása MedEdit ® Orvosi Képfeldolgozó Rendszer Segítségével</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2005///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author><author><style face="normal" font="default" size="100%">J A Simonka</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Comparision of Pennig Ex.Fix. and palmar plating with FEA, in radius (A3) fractures</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author><author><style face="normal" font="default" size="100%">J A Simonka</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Comparision of Pennig Ex.Fix. and palmar plating with FEA, in radius (A3) fractures</style></title><secondary-title><style face="normal" font="default" size="100%">MAGYAR TRAUMATOLÓGIA ORTOPÉDIA KÉZSEBÉSZET PLASZTIKAI SEBÉSZET</style></secondary-title><short-title><style face="normal" font="default" size="100%">MAGYAR TRAUMATOLÓGIA ORTOPÉDIA KÉZSEBÉSZET PLASZTIKAI SEBÉSZET</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">224</style></pages><isbn><style face="normal" font="default" size="100%">1217-3231</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Zs Balogh</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author><author><style face="normal" font="default" size="100%">J A Simonka</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Comparision of Synthes Hybrid Ex.Fix. and double plating in tibial fractures</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">György Bekes</style></author><author><style face="normal" font="default" size="100%">Krisztina Maróti</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Computer Assisted Image Processing and Navigation System for Orthopedic-Trauma Surgery</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Csongor Halmai</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEdit: A Computer Assisted Planning and Simulation System for Orthopedic-Trauma Surgery</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Zs Balogh</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author><author><style face="normal" font="default" size="100%">J A Simonka</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEdit: A Computer Assisted Planning system for Orthopedic-Trauma Surgery</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Csongor Halmai</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEdit műtéti tervezést segítő orvosi képfeldolgozó rendszer</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Krisztina Maróti</style></author><author><style face="normal" font="default" size="100%">György Bekes</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEdit. Orvosi Képfeldolgozó és Műtéti Tervező/Elemző Rendszer</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztina Maróti</style></author><author><style face="normal" font="default" size="100%">György Bekes</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEditÉ Orvosi képfeldolgozó, tervező/elemző és tervező rendszer</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztina Maróti</style></author><author><style face="normal" font="default" size="100%">György Bekes</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MedEditÉ Orvosi tervező és okatási rendszer</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Csongor Halmai</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Műtéti tervek előkészítése véges elemes analízishez a MedEdit orvosi képfeldolgozó rendszer segítségével</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Endre Varga</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Attila Kuba</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Preparing Surgical Operation Plans for Finite Element Analysis Using the MedEdit System</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004///</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><notes><style face="normal" font="default" size="100%">[Előadás]
[Előadás]
</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Erich Sorantin</style></author><author><style face="normal" font="default" size="100%">Csongor Halmai</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Kálmán Palágyi</style></author><author><style face="normal" font="default" size="100%">László Gábor Nyúl</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Franz Lindbichler</style></author><author><style face="normal" font="default" size="100%">Gerhard Friedrich</style></author><author><style face="normal" font="default" size="100%">Karl Kiesler</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">3D cross section of the laryngotracheal tract. A new method for visualization and quantification of tracheal stenoses</style></title><secondary-title><style face="normal" font="default" size="100%">RADIOLOGE</style></secondary-title><short-title><style face="normal" font="default" size="100%">RADIOLOGE</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2003///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">43</style></volume><pages><style face="normal" font="default" size="100%">1056 - 1068</style></pages><isbn><style face="normal" font="default" size="100%">0033-832X</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">PURPOSE: Demonstration of a technique for 3D assessment oftracheal stenoses, regarding site, length and degree, based on 
spiral computed tomography (S-CT). PATIENTS AND METHODS: S-CT 
scanning and automated segmentation of the laryngo-tracheal 
tract (LTT) was followed by the extraction of the LTT medial 
axis using a skeletonisation algorithm. Orthogonal to the medial 
axis the LTT 3D cross sectional profile was computed and 
presented as line charts, where degree and length were obtained. 
Values for both parameters were compared between 36 patients and 
18 normal controls separately. Accuracy and precision was 
derived from 17 phantom studies. RESULTS: Average degree and 
length of tracheal stenoses were found to be 60.5% and 4.32 cm 
in patients compared to minor caliber changes of 8.8% and 2.31 
cm in normal controls (p &lt;0.005). For the phantoms an excellent 
correlation between the true and computed 3D cross sectional 
profile was found (p &lt;0.005) and an accuracy for length and 
degree measurements of 2.14 mm and 2.53% respectively could be 
determined. The corresponding figures for the precision were 
found to be 0.92 mm and 2.56%. CONCLUSION: LTT 3D cross 
sectional profiles permit objective, accurate and precise 
assessment of LTT caliber changes. Minor LTT caliber changes can 
be observed even in normals and, in case of an otherwise normal 
S-CT study, can be regarded as artefacts.
</style></abstract><issue><style face="normal" font="default" size="100%">12</style></issue><notes><style face="normal" font="default" size="100%">UT: 000188058500005ScopusID: 9144241258doi: 10.1007/s00117-003-0990-8</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Erich Sorantin</style></author><author><style face="normal" font="default" size="100%">Csongor Halmai</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Kálmán Palágyi</style></author><author><style face="normal" font="default" size="100%">László Gábor Nyúl</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Franz Lindbichler</style></author><author><style face="normal" font="default" size="100%">Gerhard Friedrich</style></author><author><style face="normal" font="default" size="100%">Karl Kiesler</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">3D cross section of the laryngotracheal tract. A new method for visualization and quantification of tracheal stenoses</style></title><secondary-title><style face="normal" font="default" size="100%">RADIOLOGE</style></secondary-title><short-title><style face="normal" font="default" size="100%">RADIOLOGE</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2003///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">43</style></volume><pages><style face="normal" font="default" size="100%">1056 - 1068</style></pages><isbn><style face="normal" font="default" size="100%">0033-832X</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">PURPOSE: Demonstration of a technique for 3D assessment oftracheal stenoses, regarding site, length and degree, based on 
spiral computed tomography (S-CT). PATIENTS AND METHODS: S-CT 
scanning and automated segmentation of the laryngo-tracheal 
tract (LTT) was followed by the extraction of the LTT medial 
axis using a skeletonisation algorithm. Orthogonal to the medial 
axis the LTT 3D cross sectional profile was computed and 
presented as line charts, where degree and length were obtained. 
Values for both parameters were compared between 36 patients and 
18 normal controls separately. Accuracy and precision was 
derived from 17 phantom studies. RESULTS: Average degree and 
length of tracheal stenoses were found to be 60.5% and 4.32 cm 
in patients compared to minor caliber changes of 8.8% and 2.31 
cm in normal controls (p &lt;0.005). For the phantoms an excellent 
correlation between the true and computed 3D cross sectional 
profile was found (p &lt;0.005) and an accuracy for length and 
degree measurements of 2.14 mm and 2.53% respectively could be 
determined. The corresponding figures for the precision were 
found to be 0.92 mm and 2.56%. CONCLUSION: LTT 3D cross 
sectional profiles permit objective, accurate and precise 
assessment of LTT caliber changes. Minor LTT caliber changes can 
be observed even in normals and, in case of an otherwise normal 
S-CT study, can be regarded as artefacts.
</style></abstract><issue><style face="normal" font="default" size="100%">12</style></issue><notes><style face="normal" font="default" size="100%">UT: 000188058500005ScopusID: 9144241258doi: 10.1007/s00117-003-0990-8</style></notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Erich Sorantin</style></author><author><style face="normal" font="default" size="100%">Csongor Halmai</style></author><author><style face="normal" font="default" size="100%">Balázs Erdőhelyi</style></author><author><style face="normal" font="default" size="100%">Kálmán Palágyi</style></author><author><style face="normal" font="default" size="100%">László Gábor Nyúl</style></author><author><style face="normal" font="default" size="100%">Krisztián Ollé</style></author><author><style face="normal" font="default" size="100%">Bernhard Geiger</style></author><author><style face="normal" font="default" size="100%">Franz Lindbichler</style></author><author><style face="normal" font="default" size="100%">Gerhard Friedrich</style></author><author><style face="normal" font="default" size="100%">Karl Kiesler</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Spiral-CT-based assessment of tracheal stenoses using 3-D-skeletonization</style></title><secondary-title><style face="normal" font="default" size="100%">IEEE TRANSACTIONS ON MEDICAL IMAGING</style></secondary-title><short-title><style face="normal" font="default" size="100%">IEEE T MED IMAGING</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2002///</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">21</style></volume><pages><style face="normal" font="default" size="100%">263 - 273</style></pages><isbn><style face="normal" font="default" size="100%">0278-0062</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">PURPOSE: Demonstration of a technique for three-dimensional (3-D) assessment of tracheal-stenoses, regarding site, length and 
degree, based on spiral computed tomography (S-CT). PATIENTS AND 
METHODS: S-CT scanning and automated segmentation of the 
laryngo-tracheal tract (LTT) was followed by the extraction of 
the LTT medial axis using a skeletonization algorithm. 
Orthogonal to the medial axis the LTT 3-D cross-sectional 
profile was computed and presented as line charts, where degree 
and length was obtained. Values for both parameters were 
compared between 36 patients and 18 normal controls separately. 
Accuracy and precision was derived from 17 phantom studies. 
RESULTS: Average degree and length of tracheal stenoses was 
found to be 60.5% and 4.32 cm in patients compared with minor 
caliber changes of 8.8% and 2.31 cm in normal controls (p &lt;&lt; 
0.0001). For the phantoms an excellent correlation between the 
true and computed 3-D cross-sectional profile was found (p &lt;&lt; 
0.005) and an accuracy for length and degree measurements of 
2.14 mm and 2.53% respectively could be determined. The 
corresponding figures for the precision were found to be 0.92 mm 
and 2.56%. CONCLUSION: LTT 3-D cross-sectional profiles permit 
objective, accurate and precise assessment of LTT caliber 
changes. Minor LTT caliber changes can be observed even in 
normals and, in case of an otherwise normal S-CT study, can be 
regarded as artifacts.
</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue><notes><style face="normal" font="default" size="100%">UT: 000175063900007ScopusID: 0036489382doi: 10.1109/42.996344</style></notes></record></records></xml>