ICISE School for Medical Physics 2022, ICISE, Quy Nhon, Vietnam

4 Sept 2022, 15:00 → 9 Sept 2022, 23:30 Asia/Ho_Chi_Minh

Our second School for Medical Physics will be held September 4-9, 2022, at the ICISE conference center in Quy Nhon, Vietnam. It is aimed at Master and 4th year level students from Vietnam that are interested in application of physics in medicine. The school is also open to young professionals and engineers working in Medical Physics.

The program will consist a series of lectures covering selected Medical Physics topics:

• Dosimetry
• Medical Imaging
• Radiation Therapy
• Radiation Protection
• Quality Assurance

We will also offer laboratory exercises where students can work in small groups:

• Experiments with TimePix / MediPix silicon detectors
• The EasyPET desktop demonstration kit for PET imaging
• Application of Articial Intelligence in Medical Imaging

If you are interested in participating please apply using the registration form.

Accomodation for accepted participants will be provided. We have a limited number of inside Vietnam travel grants for participants having problems to finance their travel to Quy Nhon; you may apply once you have been accepted.

Sunday 4 September

Arrival of participants

Monday 5 September

1 Opening, program overview, logistics

2 Medipix application in advanced brachytherapy dosimetry

Speaker: Thuy Linh Tran

10:00 Group Picture, Coffee and Tea

3 TimePix pixel detectors for particle identification and dosimetry

Speaker: Stanislav Pospisil (Institute of Experimental and Applied Physics, Czech Technical University in Prague)

4 An overview of proton therapy

The use of proton beams for radiotherapy has been proposed in the 1940s and patients have been treated with this modality since the 1960s. With the advent of more powerful computers for therapy planning and fast electronics for sophisticated controls in the 1990s it became possible to even better exploit the therapeutic advantage of protons by employing magnetic pencil beam scanning. While pioneering work was carried out in physics research laboratories therapy facilities have now become commercially available by a number of vendors. Technology-driven research is ongoing to further improve the quality of protontherapy and make it available to a larger number of patients.

The talk will give an overview of the development of protontherapy and illustrate how therapeutic innovations have been driven by technological progress. Current research topics like ultra-high dose rate beam delivery (“FLASH”) and approaches to compensate the effect of organ motion will be presented.

Speaker: Martin Grossmann (Paul Scherrer Institut)

12:30 Lunch

5 Introduction to the EasyPET exercise

Speaker: Martin Grossmann (Paul Scherrer Institut)

EasyPET_Kit_QuickStart_Guide.pdf

6 Overview of advanced semiconductor dosimetry

Speaker: Thuy Linh Tran

15:00 Coffee and Tea

7 Introduction to nuclear Medical Physics (remote presentation)

The main objective of this introductory lecture would be to present the basic of medical nuclear medicine seen from an experimental particle physicist. It is particularly designed as a basic educating lectures.
The outlines are:
- What is medical Physics?
– A little bit of history from the 1900’s origin
– A refreshing presentation of Radiation units (Curie, Becquerel, Gray’s , Sievert ..) and their effects on the human body.
– The basic of Radiology (from standard exam to the Computed Tomography)
– Fighting again cancer with modern tools and techniques : a short overview from past, present and future.
– Introduction to Nuclear medicine, with details about dosimetry and production of tracers.

Speaker: Patrick Le Dû

17:00 Beach Time

18:00 Dinner

Tuesday 6 September

8 Production and Quality Control of Radiopharmaceuticals

Speaker: Nguyen Tan Chau

9 Advanced semiconductor dosimetry in particle therapy: mini and micro dosimetry

Speaker: Thuy Linh Tran

10:30 Coffee and Tea

Student presentations - Session 1

10 A review of positron annihilation spectroscopy

In this review, we outline the fundamentals of positron annihilation spectroscopy and discuss how it is used in numerous branches of science. We'll highlight some of the most cutting-edge technological and basic research being done on this subject. We also discuss on the possibility of deploying a positron annihilation spectroscopy system at the Dalat Nuclear Research Institute.

Speaker: Nguyễn Trọng Hoàng Trung .

11 Radiopharmaceuticals production in Da Lat nuclear reactor.

Nuclear reactors have always contributed an important role in the preparation of several important radioisotopes indispensable for medical applications. In Vietnam, up to 95% of radioisotopes produced at the Da Lat nuclear reactor are being used by 30 nuclear medicine faculties across the country.

Speaker: Trang Tuyết Nghi .

12 Application of SPECT/CT at Nuclear Medicine and Oncology Center - Vinh Phuc General Hospital

The SPECT / CT system supports, diagnoses, manages, treatments and researches: bone scan, kidney function scan (DTPA), thyroid scan, liver scan using TC99m radioisotope. Physical engineers must ensure the quality of the SPECT/CT system (QA daily, QA monthly, MRH,COR...) radiation safety protection in the working area...and support technicians in the process of scanning SPECT/CT for patients.

Speaker: Vũ Phương Quý .

13 Overview of Nuclear Medicine Department at K Hospital

The current equipment status, number of patient diagnosed and treated, human resource at the department.

Speaker: Kiều Thị Hồng .

14 STUDY ON FABRICATION OF A DEVICE FOR FINDING VEINS AND EARLY DETECTION OF BREAST CANCER USING OPTICAL SPECTROSCOPYREP

Detection of veins is very important technique in the medical clinic applications. Moreover, early detection of cancer, especially breast cancer is the important with patient. This paper presents a preliminary study on the design and fabrication of blood vessel and breast tumor detection devices (BVTDD). The BVTDD device uses a red to a near-infrared light-emitting diode that allows practitioners or doctors to visualize blood vessels and superficial organizations like breast tumors with the naked eye. It has three operating modes including start, shallow test and deep test with a scanning time of 3-5 minutes. The results showed that the BVTDD could provide clear images of blood vessels and breast tumors with the skin penetration depth up to 15 cm. The breast tumor scan tests with the BVTDD for the patients were also found in good agreement with the respective MRI scans. The BBDD device has the advantages of simplicity, ease to use, providing potential practical applications in the medical field, e.g., for assisting superficial tumor diagnoses with MRI and/or CT scans.

Speaker: Nguyễn Thị Minh Châu .

12:15 Lunch

15 Exercises TimePix - MediPix / AI in Medical Imaging / EasyPET

15:30 Coffee and Tea

16 Protons do play dice - Monte Carlo calculations for proton therapy (remote presentation)

Speaker: Carla Winterhalter

17:00 Beach Time

18:00 Dinner

Wednesday 7 September

17 An Introduction to Medical Imaging Devices (remote presentation)

More information about the PET-MRI breast cancer trail in Taiwan:

http://www.phenix.bnl.gov/~purschke/Bosky_thesis.pdf

Speaker: Martin Lothar Purschke (Brookhaven National Laboratory (US))

18 Linear accelerators for medical applications

Speaker: Francis Gagnon-Moisan

10:30 Coffee and Tea

Student presentations - Session 2

19 General introduction to 3D radiotherapy

Nowadays, when the complexity and severity of cancer is increasing, comformal radiotherapy has proven to be one of the most effective methods to reduce the impact of cancer on patients. In my presentation, I will present to everyone an overview of 3D radiotherapy, through the main sections, such as: What is radiation therapy? 3D radiotherapy and its application cases; Steps to have a 3D radiotherapy plan; Typical cases in 3D radiotherapy. Finally, I will draw a general summary of 3D radiotherapy.

Speaker: Nguyễn Hữu Nghĩa .

20 Image-Guided Radiation Therapy (IGRT)

Image-Guided Radiation Therapy (IGRT) is a method that uses X-rays and images of the body to guide individual treatment. X-rays and images will show the size, shape and site of the cancer. The radiotherapy regimen wil be created to allow a high dose of radiation therapy to be delivered directly to the cancer site. The dose of radiation given to the surrounding normal tissues is kept as low as possible to reduce the risk of damage to these tissues. With IGRT, doctors can target radiation doses more precisely. Treatment regimens are created for each patient, so that, treatment planning may take longer than with some other one and each treatment episode may also last longer. However, IGRT can monitor cancer changes during treatment, the treatment regimen can be changed at any stage. This change can bring: better treatment results, more precisely targeted radiation therapy, more effectiveness, fewer side effects. For the reasons explained above, every patient should use IGRT method as part of their radiotherapy treatment episode. The frequency and complexity reflects the treatment intent, anatomical site and fractionation.

Speaker: Phạm Ánh Tuyết .

21 Robustness evaluation of Intensity Modulated Proton Therapy plans using Dose Volume Population Histogram

Purpose: Under geometrical uncertainties, different plan evaluation methods have been suggested but the dose distribution at a specified confidence level being highly desirable is lacking. In this work, we used the DVPH (Dose Volume Population Histogram) tool to evaluate the dose distribution of CTVs and OARs (Organs at Risk) and validate the PTV concept at a certain confidence level.

Methods: The plans were evaluated using PTV DVH and the DVPH approach. The DVPH approach is based on statistical analyzing of multiple CTV DVHs under geometrical errors with corresponding occurring probabilities. The random and systematic geometrical errors, assumed to follow a Gaussian distribution, are simulated by shifting the CT images.

Results: For target doses, the results showed that the minimum dose to PTV does not represent the minimum dose to the CTV. For two prostate cases, the minimum doses reduced from 98% and 95% of prescribed dose from PTV DVH to 89% and 92% of prescribed dose from CTV 90% CL-DVPH (90% Confidence Level-DVPH). This reduction was also seen in head and neck cases, from 95% to 68% and 74% of
rescribed dose. For OAR doses, OAR DVHs underestimated the OAR dose receiving.
Conclusions: With the DVPH tool, the results showed that the minimum dose to the PTV is not a representative of the minimum dose to the CTV in IMPT at the 90% confidence level. The OAR DVH does not match any OAR CL-DVPHs.

Speaker: Nguyễn Thị Cẩm Thu .

22 Tumor Growth Trajectory Estimation of Non-small Cell Lung Cancer Patients during Molecularly Targeted Therapy

Purpose: Our study aims for investigating mathematical models to predict the tumor growth trajectories (TGTs) during the Tyrosine kinase inhibitors (TKI) therapy for the epidermal growth factor receptor (EGFR)-mutated NSCLC patients, using tumor volumes derived from CT images.
Methods: Patient data was selected by TKI treatment duration. Region of interest (ROI) segmentation then was performed with the advice of a clinical doctor. Using the number of cells calculated from tumor volume data, the Gompertz mathematical tumor growth equation combined with a cell loss (tumor shrinkage) equation were implemented under an assumption that each tumor could contain the three cell populations: sensitive (cells could be killed by TKI drugs), persister (cells have potential to mutate to resistant cells) and resistant population (cells completely resist to TKI drugs). Seven parameters in the TGTs model for each tumor was optimized by the Levenberg-Marquardt method to minimize the difference between the predicted and reference TGTs. The model then was applied to 13 patients with 13 tumors at stages III and IV, who were treated by 4 specific types of TKI drugs (Erlotinib, Gefitinib, Afatinib and Osimertinib).
Results: The average mean absolute percentage error (MAPE) between predicted and reference tumor volumes was 6.43% with very high Spearman Correlation (0.939, p = 0.006)
Conclusion: The mathematical TGTs model has a potential to inform clinical physicians the tumor response in order to manage the TKIs treatment strategies and/or combined target therapy with other treatment modalities such as radiotherapy and conventional chemotherapy for the best treatment outcome.

Speaker: Trương Gia Huy .

23 Skin dose enhancement from the application of skin-care creams using FF and FFF photon beams in radiotherapy: A Monte Carlo phantom evaluation

Skin-care cream is commonly applied to relieve skin redness in radiotherapy. However, using cream on the patient under the photon field would increase the skin dose in delivery. The aim of this study is to evaluate the dependences of skin dose enhancement on different beam and cream variables using Monte Carlo simulation. The dose enhancement factor (DEF) defined as the ratio of the skin dose with skin-care cream to the skin dose without cream was calculated. It is found that the FF photon beam had higher DEF value than the FFF.

Speaker: Trịnh Thị Minh Anh .

24 Overview of the benchmark for 3D pre-treatment QA: ArcCHECK

ArcCHECK is the only true 4D array specifically designed for QA of today’s modern rotational deliveries and is recommended by AAPM Task Group 218 for 3D measurement requirements. SunCHECK™ simplifies and standardizes how hey balance it all – with full
integration and independence intact.

Speaker: Lê Văn Phương .

12:30 Lunch

25 Exercise AI / EasyPET - Group 1

26 Exercise TimePix - Group 1

27 Exercise AI / EasyPET - Group 2

28 Exercise TimePix - Group 2 (start)

15:30 Coffee and Tea

Student presentations - Session 3

29 Comparison of skin doses of FF and FFF beams in planning the use of VMAT radiotherapy for radiation therapy of patients with head and neck cancer

Purpose:
Currently, at the Department of Radiotherapy and Radiosurgery, Cancer Institute, 108 Military Central Hospital, head and neck (H&N) cancer patients are treated with the Volumetric Modulated Arc Therapy (VMAT) plan by using photon beam 6 MV flattening filter FF on TrueBeam STx and Eclipse v13.6 software. The study aims to compare and evaluate the dose distribution, especially skin dose, in the VMAT plan for H&N cancer patients using photon beams at 6 MV FF and 6 MV Flattening Filter Free (FFF).
Objects and methods:
The CT-Simulation data of 31 treated H&N cancer patients was used to re-plan VMAT on Eclipse v13.6 software with 2 photon beams at 6 MV FF and 6 MV FFF of TrueBeam STx. The VMAT plans were quantitatively compared in terms of dose coverage for the treatment volume PTV, Quality of Coverage (Q), Conformity Index (CI), and Homogeneity Index (HI), the dose on organs at risk (OARs), and skin dose, as well as Monitor Unit (MU) number and Beam on Time (BoT).
Result:
The dose distribution of the VMAT plans using two beams of 6 MV each was compared. The dose evaluation indicators obtained from plans using 6 MV FFF photon beams give values close to the ideal values than the 6 MV FF photon beam plans. In terms of physical characteristics, the plans to use the FFF photon beam for the average number of MU are about 17.39% higher than the plans to use FF photon beams. However, the BoT of the FFF photon beam (1400MU/mins) is reduced by 49.34% compared to the FF photon beam (600MU/mins).
For the tolerance dose to OARs, FF photon beams give tolerated dose values at some OARs using a 6 MV FF photon beam for lower dose values than 6 MV FFF photon beams at the spinal cord (0.76%) and right inner ear (0.24%). However, the 6 MV-FFF photon beam has a lower dose value than the 6 MV-FF photon beam in most of the remaining OARs, such as 0.36% in the brainstem, 5.68% in the chiasm, 12.18% in the left len, 14.77% in the right len, 1.01% in the left inner ear, 3.07% in the left optic nerve, 2.79% in the right optic nerve, 1.15% in the left parotid gland, 0.87% in the right parotid gland, and 4.44% of the body mean dose.
The skin dose on the VMAT plan using the 6 MV FFF beam was lower than the 6 MV FF beam observed at different skin thicknesses from 1 mm to 4 mm as well as different dose levels from 5 Gy to 60 Gy.
Conclusion:
The study compared the planning of head and neck cancer patients by the VMAT technique using two photon beams at 6 MV, which gave similar results. When using the FFF beam, it will reduce the dose on the patient's skin and reduce the beam on time during the treatment of the patient.
Keywords: FFF, FF, skin dose, head and neck cancer.

Speaker: Nguyễn Tùng Lâm .

30 An analytical expression for R50% dependent on PTV surface area and volume: A cranial SRS comparison

The intermediate dose spill for a stereotactic radiosurgery (SRS) plan can be quantified with the metric R50%, defined as the 50% isodose cloud volume (VIDC50%) divided by the volume of the planning target volume (PTV). By coupling sound physical principles with the basic definition of R50%, we derive an analytical expression for R50% for a spherical PTV. Our analytical expression depends on three quantities: the surface area of PTV (SAPTV), the volume of PTV (VPTV), and the distance of dose drop-off to 50% (Δr). The value of Δr was obtained from a simple set of cranial phantom plan calculations. We generate values from our analytical expression for R50% (R50%Analytic) and compare the values to clinical R50% values (R50%Clinical) extracted from a previously published SRS data set that spans the VPTV range from 0.15 to 50.1 cm3. R50%Analytic is smaller than R50%Clinical in all cases by an average of 15% +- 7%, and the general trend of R50%Clinical vs VPTV is reflected in the same trend of R50%Analytic. This comparison suggests that R50%Analytic could represent a theoretical lower limit for the clinical SRS data; further investigation is required to confirm this. R50%Analytic could provide useful guidance for what might be achievable in SRS planning.

Speaker: Nguyễn Trần Đức .

31 Research on the construction of a phantom in dose calculation by PHITS simulation program

In the field of medical physics, determining the dosage for organs is a very complex problem because it is impossible to directly measure the dosage inside a living person's body. Therefore, in order to estimate the dosage, one usually has to use phantoms. For dosage determination and safety assessment, Monte Carlo simulation programs and today's phantoms have become indispensable tools. There are already several standard phantoms in the world, but they do not represent biological characteristics by region or for a specific object. Another method used to build characteristic phantoms is through computed tomography (CT) images and the Hounsfield index. The method requires converting the grayscale value of each pixel element into the Hounsfield index. As such, it can only be applied to CT imaging. To overcome this shortcoming, this study has developed a program based on a new process that can convert images to geometric format for MCNP/PHITS.
The new procedure that we propose will allow researchers to describe the anatomical
structures more accurately and be specific to each patient.

Speaker: Trần Thùy Dương .

32 Studying neutron/gamma emission from 15 MV medical linear accelerator by GATE/GEANT4 simulation toolkit

In clinical linear accelerators, high-energy beams may produce secondary neutrons which leads to an unwanted dose distribution surrounding. A small neutron dose is known for high biological effectiveness with regard to cancer induction. We study a Siemens Primus radiotherapy linear accelerator operated at the energy of 15MV by GATE/GEANT4 simulation toolkit. In our work, we discuss the geometry of linac’s head, the Physics List and the beam profile of the incident electron hitting an accelerator target. Here, the comparison of absorbed dose in water phantom between simulation data and measurement data is discussed to evaluate the beam profile of incident election of 15MV operation.

Speaker: Trần Thị Thanh Vinh .

33 Application of machine learning (ML) in radioisotope identification in the environment

Danang Unit, Research and Development Center for Radiation Technology,
Vietnam Atomic Energy Institute. The content of the internship is as follows:
1. Internship topic: Research on application of machine learning (ML) in radioisotope identification in the environment based on gamma spectrum measured by NaI scintillation detector
2. Job Description:
- Developing and testing algorithms, image recognition models and other problems in the field of physics, nuclear engineering
- Deploy and improve algorithms and models according to actual application requirements
- Writing algorithm documents, reports and seminars
As a pedagogical student, I have never been exposed to programming, so I am spending 2 months learning this language. Besides, I find this topic extremely interesting because the application of information technology in the nuclear field is really attractive in the 4.0 era.
To complete the project I need to equip:
- Have a mathematical background in linear algebra, statistical probability, and good optimization
- Ability to work independently, actively, proactively at work, always eager to explore and learn new knowledge
- Ability to search documents, read English documents
So I'm doing my best in the hope that artificial intelligence will develop more and more widely.

Speaker: Phùng Thị Xuân .

17:15 Beach Time

34 Exercise TimePix - Group 2 (continued)

18:30 Bus leaves for Quy Nhon 18:30

19:30 Dinner

Thursday 8 September

35 Applications of artificial intelligence (machine learning / deep learning) in medical physics

Speaker: Hoàng Thị Kiều Trang (University of Science, Ho Chi Minh City, Vietnam)

36 Treatment planning of stereotactic radiosurgery (SRS) for patients with brain metastasis

Speaker: Ngo Trung Nghia

10:30 Coffee and Tea

Student presentations - Session 4

37 Investigation of neutron dose rate from 15 MV photon beam in Clinac iX medical accelerator at Kien Giang Oncology hospital

The photon beams in Radiotherapy are shaped by some components of the LINAC head such as collimators, flattering filter, MLCs, etc., which are made of heavy metals. Because the threshold for photon-neutron reaction of heavy materials is about 7 MeV, photon beams with energies of 10, 15, and 18 MV in clinical applications are capable of generating unwanted neutrons. These unwanted neutrons need to be taken into account because they cause a high Relative Biological Effect (RBE) that even a small amount can cause harm to patients as well as medical staffs. This work was performed to investigate the neutron dose rate and its attenuation at several locations in the LINAC vault for photon beam 15 MV emitted from Clinac iX medical accelerator. A portable neutron survey meter was used to measure the neutron dose rate at 12 different locations in the LINAC vault, where the patients were delivered by prescribed dose and the radiotherapists often appeared after beam off. Results revealed that the neutron dose rate distribution was not the same at the measurement locations, moreover, it was not decreased to zero immediately after beam off, but declined over time.

Speaker: Vũ Ngọc Tú .

38 Determination the neutron flux on Varian CX linear accelerator at 108 Military Cental Hospital by experimental method

Nowaday, radiotherapy accelerators is used to treating patients with electron and photon beams. However, photon beam energy is greater than 8 MV, secondary neutron beam will be created by photo-nuclear reaction (γ, n). The effects of secondary neutron beam on patients during radiation therapy have not been fully evaluated. In the world, previous studies were conducted by author (Hong Suk Kim, Najmeh Mohammadi, Seyed Mehdi Hashemi, H. Yucel …), the results of these studies: the neutron flux in the treatment room was in the range (1,17±0,06)x〖10〗^7n/〖cm〗^2. This study was performed to determine the neutron flux distribution at different positions on the treatment table with gold foil activation method at the Varian CX treatment room, using an energy level of 15 MV at 108 Military Central Hospital. Research results: neutron flux along the treatment table is about 3,97x〖10〗^3 to 2,33x〖10〗^6 n/〖cm〗^2/s. The results are used as data to calculate the dose of neutrons affecting the patient to improve the quality of treatment.

Speaker: Lê Mạnh Đức .

39 DAILY DOSE TEST RESULT EVALUATION OF THE PRECISE ELEKTA ACCELERATORS AT HO CHI MINH CITY ONCOLOGY HOSPITAL

Target: Evaluation of daily dose test results of the Precise Elekta accelerators, there
by make conclusions about the dose stability of Precise Elekta accelerators.
Subjects, methods: Perform dose measurement on Precise Elekta accelerators
using Daily QA3 device based TRS-398[1], TG-142[2] reports and reference guide
of Sun Nuclear Corporation.
Results: In this study, results of daily dose measurement were obtained for 331 days
(18 months), from January 2, 2018 to June 30, 2019. In general, the energy levels
of the Presice Elekta accelerators bring good dose quality, the number of days
exceeding the limit is very low. Common energy levels such as 6MV and 9MeV are
always highly stable, highly accurate, and will never exceed the limit.
Conclusions: The Presice Eleckta accelerators at Ho Chi Minh City Oncology
Hospital is highly appreciated in terms of dose, the dose measuring device works
well, is operated by a team of highly qualified engineers, always bringing the best
results for radiationtherapy patients.

Speaker: Nguyễn Khắc Sơn .

40 Measurements of Percentage Depth Dose and Beam profile for 6 MV and 15 MV in water phantom at General Ninh Binh hospital

Radiotherapy is the branch of clinical medicine concerned with the application of ionizing radiation in the treatment of disease. The process of commissioning a linac for clincl use includes measurements of dosimetric parameters that are necessary to validate the treament planning systems used to select optimal radiation modality and treatment technique for individual patients. In the present study, the measurement of PDD, beam profile was 6 MV , 15 MV in a water phantom at SSD 10 cm (PDD); 90 cm (beam profile); field size 1010×10〖cm〗^2 using detector CC103, the linear accelerator is Synergy Platform. Measurement sbased on TRS 398 protocol, results was compared with IAEA standard. The obtained PDD, symmetric, flatness, penumbra is similar to request of machine, which ensure system work normally.

Speaker: Trịnh Thúy Nguyện .

41 A simple tool to show depth dose distributions in goods treated by 10 MeV electron beam

When we use the 10 MeV electron beam to irradiate goods (eg: frozen fish, seafood, pet food, fruit…), absorbed dose and Dose Uniformity Ratio (DUR) are two important aspects that must be considered. The energy depth distribution of the electron beam when going through the matter is quite varied, so the absorbed dose is varied too. We have to create a tool that demonstrates the absorbed dose inside the goods quickly and visually. Based on that tool, the accelerator operator can predict the dose distribution then they can decide rapidly and precisely if the good can be treated by electron beam and which the surface dose should be.
Almost every operator is not an expert in coding, so that tool needs to be simple. The calculation is based on depth dose distributions in a water phantom, with some adjustments from real-life dosimetry and we used Microsoft Excel software to perform the demonstration, with great help from the conditional formatting function

Speaker: Nguyễn Ngọc Quốc Trình .

12:15 Lunch

Visit to Explora Science Museum

15:30 Coffee and Tea

42 AI in nuclear medical imaging context (remote presentation)

The evolution of machine learning approaches with the introduction of deep learning techniques, has led to an exponential increase in the use of Artificial Intelligence (AI) in a variety of application areas, including the healthcare field. Within this context, AI has been introduced at different steps of medical imaging, covering the simulation of imaging devices, image formation including tomographic reconstruction and image related corrections to image processing for the subsequent exploitation of reconstructed images. The latest advances in the field of medical image formation and processing will be covered during this presentation including an insight on the potential interest of AI from a clinical perspective.

Speaker: Dimitris Visvikis

17:00 Beach Time

18:00 Dinner

Friday 9 September

43 Radiation measurements around the Fukushima Daiichi nuclear power plant

Speaker: MASAHARU NOMACHI

QuyNhon-fukushima upload.pdf

44 Dosimetry

Speaker: Francis Gagnon-Moisan

10:30 Coffee and Tea

Student presentations - Session 5

45 The Evolution of Medical Imaging

One of the most ground-breaking advances in medicine is diagnostic imaging, also known as radiology. How doctors and patients understand health and sickness has been transformed by advances in radiology. Radiology enables medical personnel to view a live human body's interior without having to make an incision. It is crucial to the expansion and advancement of the field because it is the medical community's most fundamentally visual specialty.

Speaker: Phạm Thị Phương Kha .

46 ROLE, RESPONSIBILITIES AND REALITY OF MEDICAL PHYSICIST IN A DEPARTMENT OF DIAGNOSTIC IMAGING

Purpose
Describe the role, responsibilities and current situation of human resources Medical Physicist in a department of diagnostic imaging
Object and method
The subject is the newly recognized profession of Medical Physicist. The survey is based on the statistical results of the Vietnam Society of Medical Physics. Assessment of career prospects in radiology departments based on the minimum framework of the number of physicists of the International Atomic Energy Agency (IAEA).
Result
The Medical Physicist has not been recorded working independently in departments of diagnostic imaging. Roles and responsibilities of Medical Physicist are taken up by Radiologists, biomedical engineers, and Medical Physicist in radiation oncology or nuclear medicine.
Conclusion
Medical Physicist is a potential profession, bringing efficiency and quality improvement in diagnostic imaging departments.
Key word: Medical Physics, Medical Physics Engineer, Physics Engineer, Medical Physicist

Speaker: Nguyễn Tiến Quân .

47 Radiological Image quality metrics in clinical routine

Radiography is an imaging technique using X-rays and which is the most common and quick technique in diagnostic imaging. It has been more than a century since W.C. Röntgen discovered X - ray but nowadays, it still has some useful and helpful values. In Vietnam, few radiographers pay attention about the image quality in radiography. Therefore, it is essential to know the metrics which affect the image quality.

Speaker: Đặng Thế Phong .

48 MAGNETIZATION PROPERTIES OF TISSUES

Due to the fact that Magnetic Resonance Imaging has become prevalent and been likely to take lead in the field of Diagnostic Imaging these days, I am extremely aware of the importance of understanding the rationale behind the MRI techniques. This study topic will present, to some extent, what is occurring inside our body during the MRI examination; in other words, magnetization properties of tissues.

I, myself, as well as many of our student generations have faced some misleading problems in terms of MR images when they first got used to this procedure. Unlike X-ray or Computed Tomography, which our learners would find it less difficult to obtain the physics of these, most of us would struggle to comprehend how the body’s parts or organs contrast were revealed on the MR images. Therefore, I opt for this topic as my interest when it comes to introducing MRI to students or talks with my colleagues. My presentation, including some formulas and images as examples, will clarify the principles of T1, and T2 relaxations as well as differences between them.

If only my presentation would provide those who will take part in the ‘student presentations’ session of the workshop with some useful and informative details regarding how MR images were created.

Speaker: Vũ Lê Huy .

49 Methods of diseases detection using image processing anh machine learning

Systems using machine learning can learn from initial data labeled, then identify features and make decisions with little human intervention. An input image can be converted into millions of pixels for classification tasks. Accordingly, data entry will make processing very difficult. To make it easier, the image is converted into a reduced set of features. This selects and measures representative properties of the raw input data in reduced form and size. Furthermore, a streamlined set represents the relevant piece of information needed to perform the desired task. This set can be represented by color, texture, shape, or a simple part of an image. In this essay, some studies on the use of machine learning to process medical images in the diagnosis of several diseases such as ophthalmology, dermatology, osteoarthritis, and hematology will be summarized.

Speaker: Võ Văn Tiên .

12:15 Lunch

50 Quality Assurance in radiotherapy

Speaker: Francis Gagnon-Moisan

51 Logfile-based 4D dose reconstruction (remote presentation)

Speaker: Ye Zhang

15:30 Coffee and Tea

52 Silicon detectors for space research

Speaker: Stanislav Pospisil (Institute of Experimental and Applied Physics, Czech Technical University in Prague)

17:00 Beach Time

19:00 Handout of certificates, Farewell Dinner