Summer Course in Medical Physics 2024

IndoQCT and IndoseCT for CT Image Quality and Dosimetry Measurements

The Summer Course in Medical Physics 2024 is organized by the Department of Physics, Faculty of Sciences and Mathematics (FSM), Diponegoro University (UNDIP), Semarang, Central Java, Indonesia. The Summer Course is a seven-day online activity that will expose the participants to knowledge and skills in image quality measurements of computed tomography using IndoQCT and IndoseCT software. Moreover, its quality performance is also compared with dose measurements to ensure optimal future computed tomography (CT) scanning protocol. In brief, the summer course will cover various practical measurement skills as follows: computed tomography dose index volume (CTDIvol), size-specific dose estimate (SSDE), dosimetry for CT with tube current modulation (TCM) technique, CT number consistency, CT number uniformity and homogeneity, CT number linearity, noise image and noise power spectrum (NPS),  spatial resolution (visual observation, modulation transfer function (MTF), and task transfer function (TTF)), low-contrast detectability (LCD), slice thickness, CT alignment, antry tilts, and advanced image quality on clinical patient images.

About IndoseCT (

IndoseCT is software to calculate and manage the radiation dose of a patient undergoing CT examination. It does not only calculate the radiation output dose of CT machines (in terms of CTDIvol), but also the individual dose received by each patient (in terms of SSDE) either based on the effective diameter (Deff) or water-equivalent diameter (Dw). This software can also calculate radiation output and patient dose for CT equipped with TCM technique. IndoseCT has been recorded in the Letter of Registration of Creation, Ministry of Law and Human Rights (Kementerian Hukum dan HAM), Republic of Indonesia, Number 000217029, on August 12, 2020.

Until 2011, CT doses had been characterized by the CTDIvol, whereas that metric is only able to quantify CT radiation output. The CTDIvol value is influenced by almost all input parameters, such as tube voltage (kVp), tube current (mA), rotation time (s), pitch, collimation width, and others. It was noted, since its introduction, that CTDIvol was not meant to indicate the radiation dose received by the patient. This is because the dose within each scanner is influenced by not only the radiation output from the CT machine but also by the characteristics of the patient undergoing the examination, such as the size of the patient and the composition of the body part being examined. To quantify a patient’s radiation dose, a new metric of SSDE was introduced.

IndoseCT software estimates the radiation dose directly for each patient using the patient’s image or by entering patient data manually. IndoseCT can also be used for the estimation of organ dose and effective dose. The effective dose is the dose commonly used to estimate the risk of developing cancer in the future from CT examinations. IndoseCT is also equipped with tools to store patient dosimetry data in a database. From this database, the software can analyze patient dosimetry data and easily display its graphs so that it becomes useful information for dose optimization for the use of ionizing radiation for stakeholders, whether for medical physicists, radiology doctors, hospital management, or regulatory agencies.

About  IndoQCT

IndoQCT is software for automatically measuring CT image quality. IndoQCT can measure many CT quality parameters (either manually or automatically), including CT number (accuracy, uniformity, homogeneity, and linearity), image noise (tolerance, uniformity, and NPS), spatial resolution (visual, MTF based on point, MTF based on edge, and TTF), slice thickness, low-contrast resolution (visual, contrast-to noiseration (CNR), LCD statistical calculations), CT alignment, gantry tilt, distance accuracy, and distance between slice accuracy. IndoQCT can measure CT quality parameters from several types of phantoms available in the market, such as AAPM CT performance phantom, ACR CT accreditation phantom, CatPhan phantom, and phantoms supplied by CT vendors (GE, Siemens, Philips, and Toshiba). Moreover, several CT quality parameters can be measured directly from patient clinical images, such as CT number, image noise, LCD, spatial resolution, and alignment.

With IndoQCT, various image quality parameters can be set and then detected either manually or automatically using computational phantoms. This is particularly useful for educational purposes to provide a direct overview to students. Several filters for noise suppression are equipped in IndoQCT, such as adaptive mean filter (AMF), selective mean filter (SMF), bilateral filter (BF), non-local mean (NLM) filter, and others. Moreover, additional features are also included, such as resizing images, rotating images, and shifting images. An interesting feature that is not available in any other software, in IndoseCT, multi-windows blending can be performed, so that 2 or 3 windows can be displayed in one image in the form of color (red-green-blue).


The summer course will be held online from July 22 – 30, 2024 using Zoom meeting application. Fourteen topics will be presented by:

Choirul Anam, Ph.D, F.Med, Diponegoro University, Indonesia

Pandji Triadyaksa PhD, F.Med, Diponegoro University, Indonesia

Noor Diyana Osman PhD, Universiti Sains Malaysia, Malaysia

Mustapha Alhaji Barde PhD, Bayero University Kano, Nigeria

On each day, two sessions, 100 minutes each, are scheduled. The full agenda of the course is listed in the information below:

Fee and Registration

  • The summer course is free of charge for International and National Students and Researchers with only accepts a limited number of participants.
  • The admission process starts from April 1 – July 15, 2024, or until the number of participants is fulfilled.
  • International students (undergraduate and graduate) please apply using the registration link provided at:
  • National Students and Researchers/Academia (worldwide) please apply using the registration link provided at:

Contact detail

Questions regarding the summer course and its registration process can be directed to the summer course Coordinator, Pandji Triadyaksa Ph.D, F.Med, at

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