Papers by Marjan Mansourvar
Automatic method for bone age assessment based on combined method
2014 International Conference on Computer and Information Sciences (ICCOINS), 2014
ABSTRACT Bone age assessment (BAA) is a method of evaluating the level of skeletal maturation in ... more ABSTRACT Bone age assessment (BAA) is a method of evaluating the level of skeletal maturation in children. Generally, it is applied manually by comparing an X-ray of a left hand-wrist with a standard samples as atlas in the clinical procedure. The manual methods are prone to variability of observation, time consuming and limited to objective decisions. These are big motivations for automatic method for bone age assessment. This study aims to develop an automated method for BAA based on combined method. This method tries to overcome the problems of conducting BAA in manual methods. A survey questionnaire is used as the part of research methodology to identify the BAA method used by radiologists and to extract the factors that effect on determination of bone age in the Faculty of Medicine, University of Malaya Medical Centre (UMMC).
Lecture Notes in Electrical Engineering, 2013
A quantitative study was conducted to direct the design and development of a computerized system ... more A quantitative study was conducted to direct the design and development of a computerized system for bone age assessment (BAA) in University of Malaya Medical Center (UMMC). The aim is to develop a system to assist radiologists and doctors in obtaining the most accurate results in estimation of bone age. A primary analysis shows the current method used by UMMC radiologists for bone age assessment, their feedbacks, problems encountered and their opinions about new approach for BAA. Our study also extracts user requirements for designing and developing a computerized method for BAA.
Background: Recently, determination of skeletal age, defined as the assessment of bone age, has r... more Background: Recently, determination of skeletal age, defined as the assessment of bone age, has rapidly become an important task between forensic experts and radiologists. The GreulichePyle (GP) atlas is one of the most frequently used methods for the assessment of skeletal age around the world. After presentation of the GP approach for the estimation of the bone age, much research has been conducted to examine the usability of this method in various geographic or ethnic categories. This study investigates on a small-scale and compares the reliability of the GP atlas for assessment of the bone age for four ethnic groups e Asian, African/American, Caucasian and Hispanic e for a different range of ages. Materials and methods: Plain radiographs of 184 left hands and wrists for males from the healthy sample between 1 to 18 years of age for four ethnic groups were taken. The skeletal age (SA) was estimated by a radiologist using the GP atlas. The blind method was utilized. The mean (SA) results were compared with mean chronological ages (CA) for the separate ethnic groups. SPSS was used to conduct the analysis and the paired t-test was applied to show the difference between the mean CA and mean SA achieved from the GP atlas. Results: The results from the GP atlas were compared to the CA of the samples. In Asian subjects the mean difference was 0.873 years. The GP atlas showed delayed bone age at 2e7 ages (from 0.2 to 2.3 year) and then advanced bone age for age 8. In the African/American subjects the difference between CA and SA was statistically significant (P-value ¼ 0.048). The mean difference in the Caucasian and Hispanic subjects reflects no considerable distinction with a standard deviation (SD) of 0.3088 and 0.3766, respectively, (P-value >0.05 for both groups). Conclusion: According to the present study, it is concluded that although the GP atlas is reliable for Caucasian and Hispanic ethnic groups it is not applicable for other ethnic groups for different ranges of age, especially in the sample of the male African/American group from 8 years to 15 years and Asian during childhood. Although it is not clear whether the other references are more useful than this standard, we believe that some enhancement is vital for the GP atlas to obtain more consistent results.
Malaysian Journal of Computer Science, 2012
Bone age assessment (BAA) is often used to evaluate the growth status of children as part of the ... more Bone age assessment (BAA) is often used to evaluate the growth status of children as part of the detection of hormonal problems and genetic disorders. The determination of skeletal maturity is done based on a radiological examination of the hand-wrist skeletal area. This paper introduces a novel approach for BAA that utilizes a histogram based comparison technique. This approach is executed as a web based system that uses an image repository and similarity measures based on content-based image retrieval. This ...
2012 Fourth International Conference on Computational Intelligence, Modelling and Simulation, 2012
A main challenge facing the law-enforcement and intelligence-gathering environment is accurately ... more A main challenge facing the law-enforcement and intelligence-gathering environment is accurately and efficiently analyzing the huge volumes of data. Analyzing crime data can be difficult because of recognizing key features and transactions among the large amounts of data, of which only a small section is relevant to illegal process. An intelligent forensic system (IFS) is a powerful medium that enables investigators, who may lack extensive training as data analysts, to assess large databases efficiently and rapidly. Computers can process thousands of transactions in seconds, saving time and manpower. Computers are also less prone to errors than humans. This research goal is to develop a computer-based system for crime data mining and analyzing multimedia data using physical evidence (fingerprints, DNA, dental, face or personal effects, etc.) in large databases to support intelligent forensic study.
Bone age assessment (BAA) of unknown people is one of the most important topics in clinical proce... more Bone age assessment (BAA) of unknown people is one of the most important topics in clinical procedure for evaluation of biological
maturity of children. BAA is performed usually by comparing an X-ray of left hand wrist with an atlas of known sample bones.
Recently, BAA has gained remarkable ground from academia and medicine. Manual methods of BAA are time-consuming and
prone to observer variability. This is a motivation for developing automated methods of BAA. However, there is considerable
research on the automated assessment, much of which are still in the experimental stage. This survey provides taxonomy of
automated BAA approaches and discusses the challenges. Finally, we present suggestions for future research.
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Papers by Marjan Mansourvar
maturity of children. BAA is performed usually by comparing an X-ray of left hand wrist with an atlas of known sample bones.
Recently, BAA has gained remarkable ground from academia and medicine. Manual methods of BAA are time-consuming and
prone to observer variability. This is a motivation for developing automated methods of BAA. However, there is considerable
research on the automated assessment, much of which are still in the experimental stage. This survey provides taxonomy of
automated BAA approaches and discusses the challenges. Finally, we present suggestions for future research.