Reconstruction of chronic ruptures of the Achilles tendon poses a great challenge for the orthopa... more Reconstruction of chronic ruptures of the Achilles tendon poses a great challenge for the orthopaedic surgeon both technically and functionally. The aim of this study was to assess the results of a new technique for reconstruction of chronic Achilles tendon ruptures with defects longer than 5 cm using the triple-loop plantaris tendon autograft wrapped in a central turndown flap from the proximal portion of the Achilles tendon. Eighteen patients (14 female and 4 male; mean age, 40.7 years), having chronic ruptures of the Achilles tendon Myerson type III, were enrolled in this study. The mean follow-up period of our patients was 21.8 months. All patients were assessed via the following parameters: lag of interference since the first complaint, length of the defect, length of the turndown flap and length of the harvested plantaris tendon, surgery time, complications, active range of motion at the ankle and the final score. Average values were presented as means. Independent sample t te...
Background The aim of surgical management of Kienböck¿s disease has been proposed to slow the pro... more Background The aim of surgical management of Kienböck¿s disease has been proposed to slow the progressive osteonecrosis and secondary carpal damage. The aim of this case series was to evaluate the results of a new technique, combining distal capitate shortening with capitometacarpal fusion for the treatment of Kienböck¿s disease (Lichtman stage II or stage IIIA) in neutral ulnar variance patients.Methods From 2009 to 2012, 12 patients (mean age: 25¿±¿7.6 years) were enrolled in this series. Radiological and clinical evaluations using the modified Mayo wrist scoring system were performed both pre-operatively and 12 months post-operatively. In addition, values of the scapho-capitate angle were evaluated both pre-operatively and 12 months post-operatively. The mean follow-up was 20.7¿±¿11.2 months. Statistical analysis was performed for comparisons between pre-operative and post-operative findings with the use of paired sample T test, Pearson¿s correlation, independent sample T test, a...
Forensic anthropology involves the building of an antemortem profile of an individual from skelet... more Forensic anthropology involves the building of an antemortem profile of an individual from skeletal remains. This includes sex, race determination, and age and stature estimation. Because most bones that are conventionally used for sex determination are often recovered either in a fragmented or incomplete state, it has become necessary to use denser bones that are often recovered intact, eg, the maxillary sinus. The present work was performed to investigate the possibility of estimation of sex from some radiologic measurements among a known cross-section of Egyptian population. In this study, by the use of Multidetector Computed Tomography (MDCT) scan, eight maxillary sinus measurements were assessed in 96 living non-pathologic Egyptians comprising 48 males and 48 females aged 20-70 years referred to the Radiology Department. These were subjected to statistical analysis. Two variables showed significant differences: cephalo-caudal and size of the left maxillary sinus. The study conc...
To determine the distribution and incidence of atypical regions of involvement of PRES in eclapmt... more To determine the distribution and incidence of atypical regions of involvement of PRES in eclapmtic patients by using MR imaging.Material and methodsA prospective study was approved by the ethical committee of our institution during the period between October 2011 and March 2012. Twenty two registered eclamptic patients (age ranged from 20–38 years; average 29 years) who had clinical signs and symptoms of PRES were recruited in the study, all patients were referred from Gynecology and Obstetric department, for brain MRI to evaluate PRES after clinical suspicion. All images were reviewed for the presence of high signal intensity on FLAIR and T2WI, for the severity of the vasogenic brain edema, on the basis of the extent of hyperintensity on FLAIR imaging. DWI was also interpreted for the presence or absence of areas of restricted diffusion corresponding to the hyperintensity areas on T2WI and FLAIR images.ResultsThe most common clinical presentations were seizures, and altered mental...
PURPOSE: To evaluate the diagnostic accuracy of multidetector computed tomography (MDCT) with mul... more PURPOSE: To evaluate the diagnostic accuracy of multidetector computed tomography (MDCT) with multiplanar reformatted imaging and virtual cystoscopy (VC) in early detection and evaluation of bladder masses with comparison with conventional cystoscopic findings. MATERIALS AND METHODS: This prospective study included 35 patients with suspected bladder cancer were studied by computed tomographic cystography (CTC) and virtual cystography (VC) in both the supine and prone positions after distending the bladder with air. The patient population was divided into three groups based on lesion size at conventional cystoscopy (CC). Results of the CT study were compared with those of CC. MAIN OUTCOME MEASURES: Sensitivity, specificity, positive, and negative predictive value was used to study the association between VC and CC as regarding lesion detection. RESULTS: The size of the tumors varied from 2 mm to occupying more than three quarters of the bladder. Of the 71 lesions detected on CC, 47 l...
The risk compensation theory is a widely used concept in transport economics to analyze driver ri... more The risk compensation theory is a widely used concept in transport economics to analyze driver risk behaviour. This article explores the feasibility of applying the theory in blood transfusion to raise important questions regarding the increased blood safety measures and their possible effects on blood usage (e.g., the appropriateness in transfusion). Further, it presents the findings of a pilot survey of physicians in Canada. While studies have attempted to define transfusion appropriateness, this article argues that if the risk compensation theory holds true for transfusion practice, physicians may actually be transfusing more. This may increase the possibility of contracting other unknown risks, such as the variant Creutzfeldt-Jakob Disease (vCJD), as well as increasing the risk of non-infectious transfusion risks, such as transfusion reactions. A much larger study involving psychosocial assessment of physician decision making process to fully assess physician behaviour within th...
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 1996
In a recent placebo-controlled multicenter study, 38 patients, ranging in age between 62 and 88 y... more In a recent placebo-controlled multicenter study, 38 patients, ranging in age between 62 and 88 years (median, 71) were treated with nortriptyline (NT) for up to 7 weeks. NT was administered in a divided dose of 75 mg daily and serum NT (se NT), and its 10-hydroxy-metabolites (se OH-NT) were determined at various intervals. Several clinical measures of efficacy, including the 17-item Hamilton Rating Scale for Depression, were evaluated weekly as well as side effects (anticholinergic) and electrocardiogram (ECG) changes. Eighty-one percent of patients had NT levels in the previously defined therapeutic range of 50 to 170 ng/ml, with steady state reached between 1 and 3 weeks. There was little individual variation in drug kinetics and metabolism over the study period. In general se OH-NT levels were not greater than those of se NT. Pharmacodynamic analyses showed that patients with moderate to severe anticholinergic side effects [CSE(+)] had significantly higher NT levels than those w...
IEEE Transactions on Microwave Theory and Techniques, 1995
The electromagnetic fields of the higher order axial resonant modes in a slow wave structure are ... more The electromagnetic fields of the higher order axial resonant modes in a slow wave structure are analyzed and found to have considerably different characteristics from those of the conventional fundamental mode. Here, the reflections at both ends produce axial resonant modes corresponding to axisymmetric transverse magnetic (TM) modes. The period of field modulation of some of the higher order axial
2007 10th International Conference on Computer and Information Technology, 2007
... Amin 1,3Department of Applied Physics and Communications Engineering, East West University, M... more ... Amin 1,3Department of Applied Physics and Communications Engineering, East West University, Mohakhali, Dhaka 1212; E-mail: ramin@ewubd.edu 2Department of Computer Science and Engineering, Jahangirnagar University, Savar, Dhaka 1342; E-mail: imdad@juniv.edu ...
2008 International Conference on Electrical and Computer Engineering, 2008
... 1,2,4Department of Electronics and Communications Engineering, East West University, Mohakhal... more ... 1,2,4Department of Electronics and Communications Engineering, East West University, Mohakhali, Dhaka 1212, Bangladesh 3Department of Computer Science and Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh E-mail: ramin@ewubd.edu, imdad ...
2008 Third International Conference on Convergence and Hybrid Information Technology, 2008
Page 1. A framework of Multicast Transmission on MPLS network Using PIM-SM Protocol. Md. Arifur R... more Page 1. A framework of Multicast Transmission on MPLS network Using PIM-SM Protocol. Md. Arifur Rahman Department of ECE, East West University, Mohakhali, Dhaka-1212, Bangladesh E-mail: arifur16@gmail.com KA M ...
2008 2nd International Conference on Anti-counterfeiting, Security and Identification, 2008
... Asif Hossain1, Sarwar Jahan, MM Hussain, MR Amin Department of Electronics &a... more ... Asif Hossain1, Sarwar Jahan, MM Hussain, MR Amin Department of Electronics & Communications Engineering East West University Dhaka-1212, Bangladesh 1masifhr@yahoo. com SH Shah Newaz Samsung-ICU Research Center Information & Communication University ...
Abstract: The Hill cipher algorithm is one of the symmetric key algorithms that have several adva... more Abstract: The Hill cipher algorithm is one of the symmetric key algorithms that have several advantages in data encryption. However, a main drawback of this algorithm is that it encrypts identical plaintext blocks to identical ciphertext blocks and cannot encrypt images that contain large areas of ...
There is a dearth of information about the cost of allogenic red blood cells (RBCs) and RBC trans... more There is a dearth of information about the cost of allogenic red blood cells (RBCs) and RBC transfusion in Canada in the aftermath of the Canadian blood system reorganization and the introduction of various safety measures. The unit cost of allogenic RBCs and RBC transfusion in Canada in 1994 was estimated at 152.17 US dollars. The objective of this study was to determine the unit cost of allogenic RBC transfusion in Canada from a societal perspective. A cost-structure analysis using the cost information from 2001 through 2002 was used. Costs of blood collection, production, distribution, delivery (hospital transfusion service processing and patient administration), transfusion reaction management, and opportunity cost of donor's time were included in the analysis. Canadian Blood Services and Héma-Québec supplied the data for collection, production, and distribution stages. Delivery and transfusion reaction costs were collected from eight hospitals across six Canadian provinces. In-patient costs were assessed for the intensive care unit, emergency, general medicine ward, and operating room. The aggregate mean societal unit cost of RBCs transfused on an inpatient basis in 2002 was 264.81 US dollars (95% confidence interval [CI], 256.29 dollars-275.65 dollars). The mean cost of blood collection, production, and distribution was 202.74 US dollars (95% CI, 199.63 dollars-204.31 dollars), the mean opportunity cost of donor time was 18.21 US dollars (95% CI, 17.11 dollars-21.63 dollars), the mean cost of hospital transfusion service processing was 16.65 US dollars (95% CI, 13.50 dollars-19.79 dollars), of RBC transfusion was 26.92 US dollars (95% CI, 25.33 dollars-28.52 dollars), and of transfusion reaction management was 0.29 US dollars(95% CI, 0.22 dollars-0.36 dollars). There were substantial variations in hospital transfusion service processing and RBC transfusion costs across hospitals. The societal unit cost of RBC transfusion has doubled since 1994 to 1995. Further increases in unit costs would be expected as additional safety measures are introduced. This will have important financial implications for treating patient populations that require a high level of RBC transfusions.
Case report. To show a rare case of cervical spondylolysis and spondylolisthesis secondary to bil... more Case report. To show a rare case of cervical spondylolysis and spondylolisthesis secondary to bilateral stress fractures at the pedicle laminar junction of C6 in a 16-year-old athlete playing high school baseball. The patient presented with 3 months of neck pain and intermittent right arm radicular symptoms. Plain radiographs and multidetector computerized tomography (CT) of the cervical spines. Plain radiographs revealed loss of lower cervical lordosis. Multidetector CT indicated bilateral C6 spondylolysis. Magnetic resonance imaging showed bilateral marrow edema at the pedicle laminar junction of C6. Treatment included placing his neck in a Philadelphia collar for 6 weeks. Follow-up CT revealed progression of healing. Early diagnosis and appropriate management of these cases are important to promote healing.
Reconstruction of chronic ruptures of the Achilles tendon poses a great challenge for the orthopa... more Reconstruction of chronic ruptures of the Achilles tendon poses a great challenge for the orthopaedic surgeon both technically and functionally. The aim of this study was to assess the results of a new technique for reconstruction of chronic Achilles tendon ruptures with defects longer than 5 cm using the triple-loop plantaris tendon autograft wrapped in a central turndown flap from the proximal portion of the Achilles tendon. Eighteen patients (14 female and 4 male; mean age, 40.7 years), having chronic ruptures of the Achilles tendon Myerson type III, were enrolled in this study. The mean follow-up period of our patients was 21.8 months. All patients were assessed via the following parameters: lag of interference since the first complaint, length of the defect, length of the turndown flap and length of the harvested plantaris tendon, surgery time, complications, active range of motion at the ankle and the final score. Average values were presented as means. Independent sample t te...
Background The aim of surgical management of Kienböck¿s disease has been proposed to slow the pro... more Background The aim of surgical management of Kienböck¿s disease has been proposed to slow the progressive osteonecrosis and secondary carpal damage. The aim of this case series was to evaluate the results of a new technique, combining distal capitate shortening with capitometacarpal fusion for the treatment of Kienböck¿s disease (Lichtman stage II or stage IIIA) in neutral ulnar variance patients.Methods From 2009 to 2012, 12 patients (mean age: 25¿±¿7.6 years) were enrolled in this series. Radiological and clinical evaluations using the modified Mayo wrist scoring system were performed both pre-operatively and 12 months post-operatively. In addition, values of the scapho-capitate angle were evaluated both pre-operatively and 12 months post-operatively. The mean follow-up was 20.7¿±¿11.2 months. Statistical analysis was performed for comparisons between pre-operative and post-operative findings with the use of paired sample T test, Pearson¿s correlation, independent sample T test, a...
Forensic anthropology involves the building of an antemortem profile of an individual from skelet... more Forensic anthropology involves the building of an antemortem profile of an individual from skeletal remains. This includes sex, race determination, and age and stature estimation. Because most bones that are conventionally used for sex determination are often recovered either in a fragmented or incomplete state, it has become necessary to use denser bones that are often recovered intact, eg, the maxillary sinus. The present work was performed to investigate the possibility of estimation of sex from some radiologic measurements among a known cross-section of Egyptian population. In this study, by the use of Multidetector Computed Tomography (MDCT) scan, eight maxillary sinus measurements were assessed in 96 living non-pathologic Egyptians comprising 48 males and 48 females aged 20-70 years referred to the Radiology Department. These were subjected to statistical analysis. Two variables showed significant differences: cephalo-caudal and size of the left maxillary sinus. The study conc...
To determine the distribution and incidence of atypical regions of involvement of PRES in eclapmt... more To determine the distribution and incidence of atypical regions of involvement of PRES in eclapmtic patients by using MR imaging.Material and methodsA prospective study was approved by the ethical committee of our institution during the period between October 2011 and March 2012. Twenty two registered eclamptic patients (age ranged from 20–38 years; average 29 years) who had clinical signs and symptoms of PRES were recruited in the study, all patients were referred from Gynecology and Obstetric department, for brain MRI to evaluate PRES after clinical suspicion. All images were reviewed for the presence of high signal intensity on FLAIR and T2WI, for the severity of the vasogenic brain edema, on the basis of the extent of hyperintensity on FLAIR imaging. DWI was also interpreted for the presence or absence of areas of restricted diffusion corresponding to the hyperintensity areas on T2WI and FLAIR images.ResultsThe most common clinical presentations were seizures, and altered mental...
PURPOSE: To evaluate the diagnostic accuracy of multidetector computed tomography (MDCT) with mul... more PURPOSE: To evaluate the diagnostic accuracy of multidetector computed tomography (MDCT) with multiplanar reformatted imaging and virtual cystoscopy (VC) in early detection and evaluation of bladder masses with comparison with conventional cystoscopic findings. MATERIALS AND METHODS: This prospective study included 35 patients with suspected bladder cancer were studied by computed tomographic cystography (CTC) and virtual cystography (VC) in both the supine and prone positions after distending the bladder with air. The patient population was divided into three groups based on lesion size at conventional cystoscopy (CC). Results of the CT study were compared with those of CC. MAIN OUTCOME MEASURES: Sensitivity, specificity, positive, and negative predictive value was used to study the association between VC and CC as regarding lesion detection. RESULTS: The size of the tumors varied from 2 mm to occupying more than three quarters of the bladder. Of the 71 lesions detected on CC, 47 l...
The risk compensation theory is a widely used concept in transport economics to analyze driver ri... more The risk compensation theory is a widely used concept in transport economics to analyze driver risk behaviour. This article explores the feasibility of applying the theory in blood transfusion to raise important questions regarding the increased blood safety measures and their possible effects on blood usage (e.g., the appropriateness in transfusion). Further, it presents the findings of a pilot survey of physicians in Canada. While studies have attempted to define transfusion appropriateness, this article argues that if the risk compensation theory holds true for transfusion practice, physicians may actually be transfusing more. This may increase the possibility of contracting other unknown risks, such as the variant Creutzfeldt-Jakob Disease (vCJD), as well as increasing the risk of non-infectious transfusion risks, such as transfusion reactions. A much larger study involving psychosocial assessment of physician decision making process to fully assess physician behaviour within th...
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 1996
In a recent placebo-controlled multicenter study, 38 patients, ranging in age between 62 and 88 y... more In a recent placebo-controlled multicenter study, 38 patients, ranging in age between 62 and 88 years (median, 71) were treated with nortriptyline (NT) for up to 7 weeks. NT was administered in a divided dose of 75 mg daily and serum NT (se NT), and its 10-hydroxy-metabolites (se OH-NT) were determined at various intervals. Several clinical measures of efficacy, including the 17-item Hamilton Rating Scale for Depression, were evaluated weekly as well as side effects (anticholinergic) and electrocardiogram (ECG) changes. Eighty-one percent of patients had NT levels in the previously defined therapeutic range of 50 to 170 ng/ml, with steady state reached between 1 and 3 weeks. There was little individual variation in drug kinetics and metabolism over the study period. In general se OH-NT levels were not greater than those of se NT. Pharmacodynamic analyses showed that patients with moderate to severe anticholinergic side effects [CSE(+)] had significantly higher NT levels than those w...
IEEE Transactions on Microwave Theory and Techniques, 1995
The electromagnetic fields of the higher order axial resonant modes in a slow wave structure are ... more The electromagnetic fields of the higher order axial resonant modes in a slow wave structure are analyzed and found to have considerably different characteristics from those of the conventional fundamental mode. Here, the reflections at both ends produce axial resonant modes corresponding to axisymmetric transverse magnetic (TM) modes. The period of field modulation of some of the higher order axial
2007 10th International Conference on Computer and Information Technology, 2007
... Amin 1,3Department of Applied Physics and Communications Engineering, East West University, M... more ... Amin 1,3Department of Applied Physics and Communications Engineering, East West University, Mohakhali, Dhaka 1212; E-mail: ramin@ewubd.edu 2Department of Computer Science and Engineering, Jahangirnagar University, Savar, Dhaka 1342; E-mail: imdad@juniv.edu ...
2008 International Conference on Electrical and Computer Engineering, 2008
... 1,2,4Department of Electronics and Communications Engineering, East West University, Mohakhal... more ... 1,2,4Department of Electronics and Communications Engineering, East West University, Mohakhali, Dhaka 1212, Bangladesh 3Department of Computer Science and Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh E-mail: ramin@ewubd.edu, imdad ...
2008 Third International Conference on Convergence and Hybrid Information Technology, 2008
Page 1. A framework of Multicast Transmission on MPLS network Using PIM-SM Protocol. Md. Arifur R... more Page 1. A framework of Multicast Transmission on MPLS network Using PIM-SM Protocol. Md. Arifur Rahman Department of ECE, East West University, Mohakhali, Dhaka-1212, Bangladesh E-mail: arifur16@gmail.com KA M ...
2008 2nd International Conference on Anti-counterfeiting, Security and Identification, 2008
... Asif Hossain1, Sarwar Jahan, MM Hussain, MR Amin Department of Electronics &a... more ... Asif Hossain1, Sarwar Jahan, MM Hussain, MR Amin Department of Electronics & Communications Engineering East West University Dhaka-1212, Bangladesh 1masifhr@yahoo. com SH Shah Newaz Samsung-ICU Research Center Information & Communication University ...
Abstract: The Hill cipher algorithm is one of the symmetric key algorithms that have several adva... more Abstract: The Hill cipher algorithm is one of the symmetric key algorithms that have several advantages in data encryption. However, a main drawback of this algorithm is that it encrypts identical plaintext blocks to identical ciphertext blocks and cannot encrypt images that contain large areas of ...
There is a dearth of information about the cost of allogenic red blood cells (RBCs) and RBC trans... more There is a dearth of information about the cost of allogenic red blood cells (RBCs) and RBC transfusion in Canada in the aftermath of the Canadian blood system reorganization and the introduction of various safety measures. The unit cost of allogenic RBCs and RBC transfusion in Canada in 1994 was estimated at 152.17 US dollars. The objective of this study was to determine the unit cost of allogenic RBC transfusion in Canada from a societal perspective. A cost-structure analysis using the cost information from 2001 through 2002 was used. Costs of blood collection, production, distribution, delivery (hospital transfusion service processing and patient administration), transfusion reaction management, and opportunity cost of donor's time were included in the analysis. Canadian Blood Services and Héma-Québec supplied the data for collection, production, and distribution stages. Delivery and transfusion reaction costs were collected from eight hospitals across six Canadian provinces. In-patient costs were assessed for the intensive care unit, emergency, general medicine ward, and operating room. The aggregate mean societal unit cost of RBCs transfused on an inpatient basis in 2002 was 264.81 US dollars (95% confidence interval [CI], 256.29 dollars-275.65 dollars). The mean cost of blood collection, production, and distribution was 202.74 US dollars (95% CI, 199.63 dollars-204.31 dollars), the mean opportunity cost of donor time was 18.21 US dollars (95% CI, 17.11 dollars-21.63 dollars), the mean cost of hospital transfusion service processing was 16.65 US dollars (95% CI, 13.50 dollars-19.79 dollars), of RBC transfusion was 26.92 US dollars (95% CI, 25.33 dollars-28.52 dollars), and of transfusion reaction management was 0.29 US dollars(95% CI, 0.22 dollars-0.36 dollars). There were substantial variations in hospital transfusion service processing and RBC transfusion costs across hospitals. The societal unit cost of RBC transfusion has doubled since 1994 to 1995. Further increases in unit costs would be expected as additional safety measures are introduced. This will have important financial implications for treating patient populations that require a high level of RBC transfusions.
Case report. To show a rare case of cervical spondylolysis and spondylolisthesis secondary to bil... more Case report. To show a rare case of cervical spondylolysis and spondylolisthesis secondary to bilateral stress fractures at the pedicle laminar junction of C6 in a 16-year-old athlete playing high school baseball. The patient presented with 3 months of neck pain and intermittent right arm radicular symptoms. Plain radiographs and multidetector computerized tomography (CT) of the cervical spines. Plain radiographs revealed loss of lower cervical lordosis. Multidetector CT indicated bilateral C6 spondylolysis. Magnetic resonance imaging showed bilateral marrow edema at the pedicle laminar junction of C6. Treatment included placing his neck in a Philadelphia collar for 6 weeks. Follow-up CT revealed progression of healing. Early diagnosis and appropriate management of these cases are important to promote healing.
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