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Evaluation of Letournel and Judet classification of acetabular fracture with plain radiographs and three-dimensional computerized tomographic scan.  [cached]
Visutipol B,Chobtangsin P,Ketmalasiri B,Pattarabanjird N
Journal of Orthopaedic Surgery , 2000,
Abstract: Letournal and Judet classification of acetabular fracture is widely used. The classification is based on the identification of fracture lines on plain radiographs. Three-dimensional CT scan was claimed to give a better view of the fracture line. Our study showed that intraobserver reproducibility and interobserver reliability were almost the same when classification was done by using plain radiographs and 3D-CT scan. And 3D-CT scan did not increase either the interobserver reliability or the intraobserver reproducibility in classifying the fracture.
Comparative Evaluation of Preoperative CT Scan and Intraoperative Endoscopic Sinus Surgery Findings in Patients with Chronic Rhinosinusitis
M. Mirzadeh,R. Zojaji,S. Naghibi
Iranian Journal of Radiology , 2008,
Abstract: Background/Objective: Chronic rhinosinusitis (CRS) is a common condition in medical practice. The diagnosis generally relies on clinical judgment, but computed tomography (CT) together with sinonasal endoscopy, provide the majority of the objective data. This study was carried out to determine the agreement between preoperative CT findings and intraoperative endoscopic sinus surgery (ESS) findings in patients with CRS."nPatients and Methods: Statistical analysis of collected data from paranasal sinus CTs of 51 patients aged between 15 and 77 who subsequently underwent ESS for CRS at two training hospitals during a 2-year period, was performed."nThe agreement between CT and ESS findings was assessed by Kappa statistics, Chi-square and t test were also used for data analysis."nResults: The most common co-morbidity found among the patients with chronic sinusitis was allergy in 18 (35%) patients. Hypertrophy of the inferior turbinate was the most obvious finding in CT (71%) and during endoscopic evaluation (69%). No significant correlation was found between clinical symptoms and gender or the length of disease. In 8 unusual patients (one with choanal atresia, one with bone wax in nasal cavity, and 6 with small polyposis), CT could not show the problem. There are good to excellent agreements between the two diagnostic procedures, except for the choanal atresia, which showed no agreement (κ=0)."nConclusion: The results of nasal fossa findings obtained by nasal endoscopy are more conclusive in the elucidation of diagnosis than those obtained by paranasal sinus CTs. In spite of a good agreement between CT and ESS findings in most patients, it seems in some unusual cases, CT may miss many patients.
STUDY OF AGE RELATED CHANGES OF MAXILLARY AIR SINUS FROM ITS ANTEROPOSTERIOR, TRANSVERSE AND VERTICAL DIMENSIONS USING COMPUTERIZED TOMOGRAPHIC (CT) SCAN  [cached]
Sonia Baweja,Asha Dixit,Saurabh Baweja
International Journal of Biomedical Research , 2013, DOI: 10.7439/ijbr.v4i1.791
Abstract: The maxillary sinuses are largest of the paranasal sinuses and contained within the body of maxilla. After birth, the maxillary sinus enlarges with the growing maxilla, though it is only full developed following eruption of the permanent dentition. When teeth are lost, the maxilla reverts towards its infantile shape. Thus, its height diminishes and the alveolar process is reabsorbed. In the present study, anteroposterior, transverse and dimensions of maxillary air sinus of 90 subjects divided into 9 age groups were measured by CT scan. The study concluded that there was gradual increase in all three dimension from age groups 0-25 years and thereafter, a decrease in dimensions was observed.
T-Scan II computerized occlusal analysis
Lazi? Vojkan,?ivkovi? Slavoljub,Popovi? Gorjana
Stomatolo?ki Glasnik Srbije , 2004, DOI: 10.2298/sgs0401024l
Abstract: Occlusal analysis using computerized technology has become a part of modern information technology. The aim of this study was to show the possibilities of T-Scan II computerized occlusal analyzer in prosthetic and restorative postinsertion occlusal problems. The T-Scan II computerized occlusal analysis (Tekscan, Boston, USA) is an integral part of clinical functional analyses in prosthetic and restorative insertions. The T-Scan II computerized system can quickly determine prematurities, high points, regions of excessive force and nonuniform force concentration. It can also calculate disocclusion time accurately. Occlusal foil indicators can determine only the position, number and relative force of occlusal contacts.
Computer tomographic findings in neurosyphilis  [cached]
Pavithran K
Indian Journal of Dermatology, Venereology and Leprology , 1993,
Abstract: Computer tomographic features of the brain in 2 cases of neurosyphilis are described. Less prominence of the cortical sulci suggesting cortical atrophy was the predominant feature in a case of general paralysis of insane. Diffuse, irregular, non-enhancing, low-attenuated area in the cortical and subcortical region of the right temporoparietal lobe of a patient with vascular syphilis, suggested infarction of the brain.
Computed tomographic scan in the diagnosis of bilateral renal lymphangiectasia  [cached]
Rastogi Rajul,Rastogi Vaibhav
Saudi Journal of Kidney Diseases and Transplantation , 2008,
Abstract: Renal lymphangiectasia is a rarely reported disorder of lymphatic malformation. Although benign, it may lead to hypertension and renal failure in undetected or undiagnosed cases. Adult polycystic kidney disease is a close mimic. We herewith present a rare case of bilateral renal lymphangiectasia that was strongly suspected on Computed tomographic (CT) scan and confirmed by aspiration cytology. Awareness about this condition will result in early diagnosis, early treatment and reduced morbidity.
Computerised tomographic patterns in patients with head injury at the University of Benin Teaching Hospital
AA Adeyekun, EB Obi-Egbedi-Ejakpovi
Nigerian Journal of Clinical Practice , 2013,
Abstract: Background: Head injuries rank high among morbidities due to trauma. Computerised tomography is an important modality in the investigation of these cases. However, literature on this subject in the south.south geopolitical zone of Nigeria is sparse. This study therefore aimed to document the computerized tomographic features of patients with head injury managed at the University of Benin Teaching Hospital (UBTH). Materials and Methods: A prospective study involving patients with head injury referred for CT scan from the Accident and Emergency Unit of UBTH over a 12.month period. A total of 100 patients were studied, using non.enhanced cranial CT scans. Findings were recorded and data analysis using SPSS done. Results: The age group 21.30 years was most frequently involved. Sex preponderance was 4.3:1 (male: female). Twenty.six patients had normal CT scans. The most common abnormal finding was intracerebral hemorrhage 35 cases (33%). This was followed by skull fractures, 23 cases (31%); subdural hemorrhage, 16 cases (21%); cerebral edema, 11 cases (15%). Others included mass effect, nine cases (12%). Conclusion: CT plays a very significant role in management of head injuries, as demonstrated in this study, by making such diagnoses that guided eventual patient management. Intracerebral hemorrhage was the most common abnormal finding in this report. Regular use of CT in moderate to severe cases of head injury is advocated.
Correlation between the Degree and Severity of Symptoms and CT scan Changes in Chronic Rhinosinusitis (CRS)
H. Moghaddasi,M. Sanei Taheri,M. Vazirnezami,A. Jalali
Iranian Journal of Radiology , 2008,
Abstract: Background/Objective: find out whether any correlation exists between the degree and severity of symptoms as assessed by the SNOT-20 questionnaire and CT scan changes as graded by Lund-Mackay scoring system in chronic rhinosinusitis (CRS)."nPatients and Methods: Fifties patients attending the otolaryngology department and diagnosed with CRS were prospectively entered in this study. All patients had their CT scans graded by using the Lund-Mackay with the sino-nasal outcome questionnaire (SNOT-20). Correlation analysis was conducted to determine whether the CT scan stage as assigned by Lund Mackay staging system correlated with the SNOT-20 scores."nResults: The mean age of our patients was 32.4±8.5 and 32(64%) of them were male and 18(36%) were female. The mean SNOT-20 was 45±8.7 (29-67) and the mean Lund-Mackay sinus score was 18.5±5 (8- 24).The mean SNOT-20 score was higher for postnasal drip (PND) and facial pain, and the lowest mean scores were for dizziness and ear pain. The Pearson's correlation coefficient confirmed that there was a good correlation between SNOT-20 scores and CT scores (Pearson correlation coefficient 0.77; P value, 0.0001)."nConclusion: Patients with higher symptom scores are more likely to have CT imaging evidence of rhinosinusitis. In patients with isolated sleep or systematic symptoms, the likelihood of rhinosinusitis is less, even if symptoms are severe. Therefore, in these patients, sinus CT-scan should be considered before treatment to establish the diagnosis of chronic rhinosinusitis due to that a number of these patients may be doing not have rhinosinusitis.
Cerebral computed tomographic angiography scan delay in subarachnoid hemorrhage  [cached]
Lukosevicius Saulius,Basevicius Algidas,Tamasauskas Arimantas
Neurology India , 2005,
Abstract: CONTEXT: Computed tomographic angiography (CTA) is widely applied in the evaluation of cerebral vessels. Contrast enhancement in cerebral CTA without care or test bolus is not always sufficient for high-quality images. AIMS: Evaluation of the possibilities of calculation of scan delay for cerebral CTA in case of subarachnoid hemorrhage (SAH), based on clinical data of a patient and to find out prognostic error of the model. SETTINGS AND DESIGN: Prospective study in Neurosurgery and Radiology departments. MATERIALS AND METHODS: Scan delay in 53 patients suffering an acute SAH was measured employing test bolus technique. Cerebral CTA was performed afterwards. STATISTICAL ANALYSIS USED: SPSS for Windows v.10.1 software package was applied for dispersion analysis, including one-sample Kolmogorov-Smirnov′s test and Levene′s Test of Equality of Error Variances. RESULTS: A statistical model for the prediction of scan delay in SAH was developed. Cerebral CTA scan delay was dependent upon age, neurological status and impact of the latter factors together (P<0.05). The determined mean square error of prognosis of scan delay of the developed model equals 3.3 sec. CONCLUSION: Using our proposed model it is possible to estimate an optimal delay time for CTA in most patients with SAH with a determined error.
Evaluation of extensions of sinonasal mass lesions by computerized tomography scan  [cached]
Annam V,Shenoy A,Raghuram P,Annam V
Indian Journal of Cancer , 2010,
Abstract: Introduction : Cross-sectional imaging has had a significant impact on the management of the sinonasal malignancy. Staging of these lesions has been closely monitored by dependence on computerized tomography (CT) scan and now in small proportion with MRI. The objective of the study was to evaluate the reliability of CT scan in assessing the extensions of the sinonasal mass lesions and their impact on tumor staging. Materials and Methods : All cases of sinonasal lesions were reviewed retrospectively from June 2001 to May 2006 (five years) at KMIO, Bangalore. Only those cases that had CT scan reports and Histopatholgy Examination (HPE) reports were included in the study. All the cases, which were subjected to radiotherapy prior to surgery, were excluded from the study. There were a total of 38 cases with slight male preponderance. Tumor staging was done according to the sixth edition of TNM classification of malignant tumors. Two observers evaluated all the cases (Blinded Study) and sensitivity, specificity, positive predictive value, negative predictive value and predictive accuracy were estimated. Results : The relation between the CT scan findings and HPE reports was high. Though false positivity was noted more in the ethmoid sinuses, significant impact on tumor staging was noted with false positivity of the nasopharynx. Also, false positivity was noted with orbital wall/content extensions, resulting in unnecessary exenterations of the orbit. However, CT scan reliably predicted infratemporal fossa extension in the absence of trismus. False negativity was noted more often in soft palate, indicating the need of using MRI for delineation of tumor extension. Thus, we conclude that judicious use of CT scan in all cases and MRI in selected cases will translate into better tumor-free resections and improves survival.
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