نتایج جستجو برای: optical computed tomography

تعداد نتایج: 505498  

Journal: :anatomical sciences journal 0
seyed mohsen sajjadian department of basic sciences, faculty of veterinary medicine, shahid bahonar university of kerman, kerman, iran. bahador shojaei faculty of veterinary medicine, shahid bahonar university of kerman, kerman, iran.سازمان اصلی تایید شده: دانشگاه شهید باهنر (shahid bahonar university) babak sohrab zade shahid bahonar university of kerman, kerman, iran.سازمان اصلی تایید شده: دانشگاه شهید باهنر (shahid bahonar university)

introduction: computed tomography (ct) is an imaging technique with gives us an opportunity to review cross sections of the body in live animals. in veterinary medicine although ct is mostly used for diagnostic purposes in small animals, but in recent years ct also has been used as a non invasive modality in non clinical studies. jebeer gazelle (gazella bennettii) is one of the species of the g...

Journal: :caspian journal of internal medicine 0
aliasghar manuchehri department of internal medicine, babol university of medical sciences, babol, iran ebrahim alijanpour , department of anesthesiology, babol university of medical sciences, babol, iran mohsen daghmechi . department of anesthesiology, babol university of medical sciences, babol, iran naser ghaeminan department of radiology, babol university of medical sciences, babol, iran. seyed hasan abedi . department of internal medicine, babol university of medical sciences, babol, iran. novin nikbakhsh department of surgery, babol university of medical sciences, babol, iran

background: methanol is a colorless and poisonous liquid that is commonly used as an industrial and household solvent. methanol poisoning is a rare but extremely hazardous form of in toxication that affects the central nervous system and causes visual disorder, drowsiness, seizures and coma.  case presentation: a 29-years-old man with methanol intoxication presented with drowsiness and acidosis...

Journal: :journal of medical signals and sensors 0
seyed salman zakariaee asghar mesbahi ahmad keshtkar vahid azimirad

polymer gel dosimeter is the only accurate three dimensional (3d) dosimeter that can measure the absorbed dose distribution in a perfect 3d setting. gel dosimetry by using optical computed tomography (oct) has been promoted by several researches. in the current study, we designed and constructed a prototype oct system for gel dosimetry. first, the electrical system for optical scanning of the g...

Journal: :journal of lasers in medical sciences 0
mohsen erfanzadeh laser and plasma research institute, shahid beheshti university.g.c., tehran, iran. saied alikhani laser and plasma research institute, shahid beheshti university.g.c., tehran, iran. mohammad ali ansari laser and plasma research institute, shahid beheshti university.g.c., tehran, iran. ezeddin mohajerani laser and plasma research institute, shahid beheshti university.g.c., tehran, iran.

introduction: in this study, arrangement of a low-cost optical tomography device compared to other methods such as frequency domain diffuse tomography or time domain diffuse tomography is reported. this low-cost diffuse optical imaging technique is based on the detection of light after propagation in tissue. these detected signals are applied to predict the location of in-homogeneities inside p...

Journal: :iranian journal of otorhinolaryngology 0
saleh mohebbi brain and spinal cord injury research center, neuroscience institute, tehran university of medical science, tehran, iran. marjan mirsalehi brain and spinal cord injury research center, neuroscience institute, tehran university of medical science, tehran, iran. lüder-alexander kahrs institute of mechatronic systems, leibniz university hannover, hannover, germany. tobias ortmaier institute of mechatronic systems, leibniz university hannover, hannover, germany. thomas lenarz department of otorhinolaryngology, hannover medical school, hannover, germany. omid majdani department of otorhinolaryngology, hannover medical school, hannover, germany.

introduction:visualization of inner ear structures is a valuable strategy for researchers and clinicians working on hearing pathologies. optical coherence tomography (oct) is a high-resolution imaging technology which may be used for the visualization of tissues. in this experimental study we aimed to evaluate inner ear anatomy in well-prepared human labyrinthine bones.materials and methods:thr...

This mage based series comprises of a quiz pertaining to the identification of salient anatomical structures expected to be seen at a given level on the computed tomography (CT) followed by examples of multiple representative pathologies that can be seen at the same level in a routine clinical setting. It is expected that this will improve confidence of nuclear physicians in interpretation of t...

2014
Augusto Castelli von Atzingen Dario Ariel Tiferes Elizabeth Deak Délcio Matos Giuseppe D′Ippolito

OBJECTIVES The purpose of our study was to report the results of the implementation of computed tomography colonography in a university hospital setting serving a Brazilian population at high risk of colorectal cancer. METHODS After creating a computed tomography colonography service in our institution, 85 patients at high risk of colorectal cancer underwent computed tomography colonography f...

Journal: :iranian journal of radiology 0
chih-chen chang department of medical imaging and intervention, chang gung memorial hospital, chang gung university, linkou, taiwan yon-cheong wong department of medical imaging and intervention, chang gung memorial hospital, chang gung university, linkou, taiwan; department of medical imaging and intervention, chang gung memorial hospital, chang gung university, linkou, taiwan cheng-hsien wu department of medical imaging and intervention, chang gung memorial hospital, chang gung university, linkou, taiwan huan-wu chen department of medical imaging and intervention, chang gung memorial hospital, chang gung university, linkou, taiwan li-jen wang department of medical imaging and intervention, chang gung memorial hospital, chang gung university, linkou, taiwan yu-hsien lee department of medical imaging and intervention, chang gung memorial hospital, chang gung university, linkou, taiwan

conclusion attending radiologists could diagnose acute appendicitis accurately on ne-ldct. performance of senior residents on ne-ldct is better than junior residents and comparable to attending radiologists. results diagnostic performances for acute appendicitis were not statistically different for attending radiologists at both examinations. better performance was noted on the ce-sdct with a b...

Journal: :iranian journal of otorhinolaryngology 0
amin rahpeyma oral and maxillofacial diseases research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. saeedeh khajehahmadi dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. parvin amini dental material research center ,school of dentistry, mashhad university of medical sciences, mashhad, iran.

introduction: knowledge of the presence of the alveolar antral artery in the lateral maxillary sinus wall is essential for surgeons who operate in this region. the purpose of this study was to investigate the correlation between alveolar antral artery diameter and lateral maxillary bony wall thickness in dentate patients.   materials and methods: thirty five cone-beam computed tomography (cbct)...

Journal: :iranian journal of radiology 0
ismail uzun department of endodontics, faculty of dentistry, ondokuz mayis university, samsun, turkey kaan gunduz department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey peruze celenk department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey hakan avsever department of dentomaxillofacial radiology, gulhane military medical academy (gata), ankara, turkey kaan orhan department of dentomaxillofacial radiology, faculty of dentistry, ankara university, ankara, turkey; department of dentomaxillofacial radiology, faculty of dentistry, near east university, mersin, turkey gozde canitezer department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey; department of dentomaxillofacial radiology, faculty of dentistry, ondokuz mayis university, samsun, turkey. tel: +90-3623121919, fax: +90-3624576032

conclusion no significant differences were found among observers or voxel sizes, with high az results reported for all groups. results no significant differences were found among observers or voxel sizes, with high average z (az) results being reported for all groups. both intra- and inter-observer agreement values were relatively better for 3d accuitomo 170 images than the images from newtom 3...

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