Ranga Tudugala

Ranga Tudugala
General Sir John Kotelawala Defence University · Faculty of Allied Health Sciences

MSc (Bio-Statistics) (UOP), MSc (Medical Physics) (UOC) BSc Hons (Radiotherapy) (UOP),

About

20
Publications
34,117
Reads
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0
Citations
Citations since 2017
4 Research Items
0 Citations
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20172018201920202021202220230.00.51.01.52.0
20172018201920202021202220230.00.51.01.52.0
Additional affiliations
January 2021 - March 2021
General Sir John Kotelawala Defence University
Position
  • Lecturer
April 2012 - April 2013
South Asian Clinical Toxicology Research Collaboration
Position
  • Field Research Assistant
Education
February 2014 - January 2016
Post Graduate Institute of Agriculture
Field of study
  • Bio-Statistic
January 2013 - December 2015
University of Colombo
Field of study
  • Medical Physics
January 2007 - January 2012
University of Peradeniya
Field of study
  • Radiotherapy

Publications

Publications (20)
Conference Paper
Full-text available
Haemolysis is the major limiting factor in the lifespan of Red Cell Concentrate (RCC). It must be visually checked prior to transfusion. As a quality monitoring requirement, 1% of the monthly production of RCC must be tested for percentage haemolysis. According to international quality standards, the percentage haemolysis of RCC must be less than 0...
Article
Full-text available
Digital Breast Tomosynthesis (DBT) is performing in high resolution limited angle tomography at radiographic dose levels. Advanced system facilitates the DBT along with 2 view Full Field Digital mammography (FFDM). The objectives of this study were to compare the Average Glandular Dose (AGD) ofDBT and FFDM and tocalculate the percentage of radiatio...
Article
Full-text available
Background: Leptospirosis [LP] is zoonotic diseases and one of the main communicable diseases in Sri Lanka [SL]. SL is a tropical country in the Indian Ocean with favorable environmental and geographical conditions for dispersion of the LP infection. The aim of the study was to determine the pattern of distribution with possible environmental condi...
Article
Full-text available
Background-The number of radiography and radiotherapy degree holders, who follow Master of Science in medical physics program has been increased dramatically during past few years in Sri Lanka. Objective-The aim of this study was to evaluate learning experiences and perceptions on MSc in medical physics among radiography and radiotherapy graduates....
Conference Paper
Full-text available
Two hundred chest X-ray examinations in female patients of paediatric age group (below 12 years) were studied. An electronic pocket dosimeter was used to measure the surface scattered radiation dose to the pelvis. It was placed immediately above the symphysis pubis. The direct radiation dose to the chest area was also measured. A pre-coded data she...
Conference Paper
Full-text available
Mammography x-ray examination is a gold standard method for detection of breast cancer. This cross sectional study describes the risk factors to positive finding of breast cancer and their association among Sri Lankan women who underwent mammography examination. Data were collected for six months at a selected private hospital in Sri Lanka in 2015....
Poster
Full-text available
It has been reported that maxillary sinus remains intact although the skull and other bones may be badly disfigured. Therefore the measurements of maxillary sinuses in computed tomography (CT) scans can be used for determination of age and gender when other methods are inconclusive.
Conference Paper
Full-text available
Digital Breast Tomosynthesis (DBT) is performing in high resolution limited angle tomography at radiographic dose levels. Advanced system facilitates the DBT along with 2 view Full Field Digital mammography (FFDM). The objectives of this study were to compare the Average Glandular Dose (AGD) of DBT and FFDM and to calculate the percentage of radiat...
Conference Paper
Full-text available
Mammography is used as a screening tool for early diagnosis of breast cancer. It is also useful in refining the diagnosis of breast cancer either by assessment or work up after a suspicious area in the breast has been detected. In order to detect breast cancer accurately and at the earliest possible stage, the image must have an optimum contrast to...
Research
Full-text available
Background and purpose; The purpose of this study was to evaluate the impact of random variation of treated volumes in between fractions in 2D image based fractionated high dose rate brachytherapy for cervical cancer at National Cancer Institute Maharagama, Sri Lanka. Materials and methods; Dose plans were analyzed for 150 cervical cancer patients...
Conference Paper
Full-text available
Number of students who follow MSc in medical physics programme in postgraduate level has proliferated dramatically in recent years due to the entrance of Radiography/ Radiotherapy graduates in Sri Lanka. The purpose of this study was to describe the learning experience of Radiography/ Radiotherapy graduates’ in MSc in medical physics programme. A...
Conference Paper
Understanding the metabolic consequences of Heart Failure (HF) is important in evaluating potential mechanism for disease progression in the heart, based on that we investigated whether changes of myocardial uptake of fatty acid and glucose tracer after induction of heart failure in various conditions in rats’ heart were closely related to alterati...
Conference Paper
Full-text available
Understanding the metabolic consequences of Heart Failure (HF) is important in evaluating potential mechanism for disease progression in the heart, based on that we investigated whether changes of myocardial uptake of fatty acid and glucose tracer after induction of heart failure in various conditions in rats' heart were closely related to alterati...
Conference Paper
Number of students who follow MSc in medical physics programme in postgraduate level has proliferated dramatically in recent years due to the entrance of Radiography/ Radiotherapy graduates in Sri Lanka. The purpose of this study was to describe the learning experience of Radiography/ Radiotherapy graduates' in MSc in medical physics programme. A q...
Poster
Full-text available
Intra-oral Periapical (IOPA) X-rays are the most common dental radiographs taken at the Department of Dental Radiology. It require considerable intervention of radiographer compared with the other modes of radiation diagnosis. It is shown that there are frequent repetitions of X-ray films that are reported in IOPA imaging due to the unacceptable im...

Questions

Questions (9)
Question
How to assign different colors, depend on dose received (Color wash) on given pixels in the CT matrix on Matlab ?
Here I attached files
Question
Does Dmax (Depth of dose maximum) depend on chamber? If we measured Dmax (Depth of dose maximum)using cylindrical chamber for specific electron energy (10 MeV) with field size (10x10) and then using parallel plate chamber, does Dmax differ?
Question
Chi square good for 2*2 variables and its interpret as which level having highest percentage has association with other variable.
BUT is it okay to use chi to 3* 2 variable?
Question
I have 5 treatments called A,B,C,D,E,  each treatment replicate 12 times and check the response whether Positive(1)  or Negative(0) . binary response.
I need to know which treatment is best among the all 5.  
which statistic methods can be apply ?
Question
Dose anybody measure the Virtual source position for electron beam in Varian Machine?
Can some body send me the details ?
Question
Can somebody say is what is the reasons for this ?
 "There is no increase in energy deposited near the end of the tract and the Bragg peak for electrons is never observed."  
Question
Most cancer having several possible risk factors. so which cancer type have "Area of living"  as a risk factor ?
Question
What are the methods for measuring effective virtual source position in electron beam radiotherapy?
Question
an anybody help me to find (or data base) DICOM file of CT Brain and MRI Brain of same patient.

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