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Biophysics 1. Dentistry



Általános információk

Compulsory subject 1st year 1st semester

1.5 hours lecture/week + 2 hours practice/week

credit: 3

Lecturer: Dr. Gabriella Csík

Tutor: Dr. István Voszka (phone: 459-1500/60234)

If one wants to get exemption from the subject based on the previous studies must give the application to the tutor until Sept. 15. The transcript (original or validated copy) and the detailed topic list of the relevant subjects should be attached. If there is a proper overlap between the topics (at least 75%) we check the knowledge of applicants by a written test containing multiple choice questions at the beginning of the second week of the semester.
The attached sample test shows the style of questions. The real test will contain 40 questions.


Condition for signature: participation on at least 75 % of the practices, at least 50 % of the points possible to get from the two midterm tests are achieved. The lab reports should be ready within one week after the measurement.

Participation in the practical lessons is compulsory. No more than three absences from practices are allowed for any reason, otherwise the semester will not be credited. Missed sessions must be reported to the teacher the week after. The missed measurements should be done with another group if possible.

Students must write a lab. report for each measurement. The registration card is signed only when the report is acceptable. The report is due two weeks after the measurement. At the final exam time all students must show their collection of reports to the examiner.The lab reports should be ready within one week after the measurement.

Precondition for participationon the laboratory practices, that the student must print the lab report sheet and fill the first page. It is important, that the student should write the questions, that he/she had during preparation for the practice. This will be the basis of discussion .

Rules for lab reports :

1.      Every lab report is considered as a written exam, where three types of grades can be given: „Accepted” „Correction needed” or „Not accepted” .

2.      The basis of acceptability that the teacher must sign the data measured ont he practice and written into part D of the lab report.

3.      After this the evaluation of the data must be done on the attached pages (parts E, F, G). For this application of computer is suggested, but the previously used excel sheets prepared for the given measurement are not allowed to use.

4.      Only the tasks listed in the homepage are required for a certain measurement.

5.      We give help to prepare the lab report by the checklist included in the sheet.

6.      The dataprocessing in the lab report can be accepted only if it is based ont he data measured by the student.

7.      The teacher will show, what is the mistake or missing part in the lab report. After correction the lab report must be shown again to the teacher.

8.      The acceptance can be recorded on the registration card if the correct lab report was shown.

9.      The signature for the semester can be given only if all the lab reports are ready in correct form.

10.  The last possibility to give the lab report is the last practice. After finishing the semester there is no possibility to give lab reports.
The form for the lab report can be downloaded here:

The tasks for the acceptance of lab reports are listed here:


The order of laboratory practices can be found here:


Midterm tests:

There will be two midterm tests on the 5th and 9th weeks. It contains 5 questions, from which there are 2 calculations. One can get 10 points for each question. One has to get at least 50 points from the possible 100 altogether for the two midterms to pass. Retake will be on the 13th and 14th weeks from the material of both midterms
The first midterm will be from the lecture material of 1-4. weeks and the laboratory practices of the first measurement cycle. The second midterm will be from the lecture material of 5-8. weeks and the laboratory practices of the second measurement cycle.

A sample for the midterm test can be downloaded from here:

Favours based on the semester work:
The student who gives all the lab reports on the week after the measurement and gets “Accepted” grade for all of them gets a bonus 5 at the end of the semester.
The student who answers correctly 75 % of the questions given on the lectures gets a bonus 5 at the end of the semester.

Exams and favours (ED)
Oral exam containing calculations, practice question and theoretical questions.
The bonus grades are counted into the final grade.
The student having at least 4 as the average of midterms does not have to take calculation on the exam.

Formula collection can be used on the exams. It can be downloaded here: http://biofiz.semmelweis.hu/upload/file/keplettar_20170908_EN_feltoltheto_1.pdf

We call the attention that we do not give permission to take  Biophysics II. without passing Biophysics I.

A tantárgy feladata az orvosképzés céljainak megvalósításában

Our teaching program is evolving continuously. Focused on the general objective of meeting the requirements of the medical curriculum, the courses are also intended to provide specific medical biophysics training.
Todays students will be the physicians of the oncoming decades. In selecting and highlighting topics of study, the first viewpoint is scientific foresight: the knowledge should be conveyed which must be pertinent to ensure first-class professional competence while keeping abreast of the most recent development in the field of study. Our aim is not only the teaching of a specific body of knowledge but also the development of the exact scientific method and concrete problem-solving abilities.

A tantárgy elsajátításához szükséges segédanyagok (könyv, jegyzet, egyéb)

Damjanovich-Fidy-Szöllősi (eds): Medical Biophysics (2009)

Medical biophysics practices (Semmelweis Publisher, 2015)

Essentials of Dental Radiography and Radiology (Elsevier 2013)



1 Biostatistics I: Normal distribution, parameters, sample, frequency distribution, statistical properties, estimation of parameters; linear regression (Károly Módos) 2017.09.11. pdf  
2 Biostatistics II: Statistical inference, hypothesis testing, statistical tests (t-test for a single sample, t-test for two samples, t-test for correlation, chi-square-probe); contingency tables, applications in clinical studies (Károly Módos) 2017.09.18. pdf  
3 Radiation: characteristic parameters; classification, electromagnetic spectrum; dual nature of light, diffraction, interference, monochromators, matter wave. (Gabriella Csík) 2017.09.25. pdf  
4 Interaction of light I. refraction, lenses, light microscope, electron microscopes. (Gabriella Csík) 2017.10.02. pdf  
5 Interactions of light II.reflection, scattering, absorption, law of attenuation of intensity, medical applications; color of the objects (Gabriella Csík) 2017.10.09. pdf  
6 Luminescence: description, characteristics, light sources, medical applications (Gabriella Csík) 2017.10.16. pdf  
7 Lasers: working principle, types of lasers; fields of medical application (Gabriella Csík) 2017.10.30. pdf  
8 Thermal radiation characteristics and description; emission of the human body, medical applications, infra-diagnostics (Gabriella Csík) 2017.11.06. pdf  
9 Biological effects of light, medical applications. (Gabriella Csík) 2017.11.13. pdf  
10 X-radiation 1: production, spectrum, interaction with matter (Gabriella Csík) 2017.11.20. pdf  
11 X-radiation 2: physical bases of X-ray diagnostic methods; dental X-ray, principle of CAT-scan, generations (Gabriella Csík) 2017.11.27. pdf  
12 Nuclear radiation: types, characteristics of them, principles of tracing with radioisotopes (Gabriella Csík) 2017.12.04. pdf  
13 Nuclear radiation in the clinical practice: isotope diagnostics: bases of radioisotope diagnostic methods, gamma-camera, SPECT, PET; radiotherapy (Gabriella Csík) 2017.12.11. pdf  



Everybody should bring ID card to the test.  We call your attention, that during the midterm tests and exams one can use calculator with max. 2 lines display only.

Without ID card and lab. reports one can not start the exam.

Consultations in the exam period will be on the following days at 4 p.m.:

Dec. 19, 22
Jan. 2, 9, 16, 23, 30

It will be in one of the student laboratories of the Department.

Házi feladat példák

Házi feladat példák

week dentistry practice
2 statistics problems 1, 2 Refractometry: 14
further calculations
3 statistics problems 3-7  
4 7, 8  
5 13, 39, 40 Microscopy I: 12
further calculations
6 20, 21 Light_Emission.pdf
7   Resonance.pdf
8 9, 10, 11 Problems_Light_Absorption.pdf
9   Problems_Nuclear_Medicine.pdf
10 15 Problems_OpticsOfTheEye.pdf
11 16, 17  
12 18  
13 24-28, 30  
14 29  

From the further calculations the following are important for the semifinal exam:

Microscopy I.: 2.23, 2.28

Refractometer: 2.10, 2.12, 2.14

Light emission: 2.56

Resonance: 11.2, 11.3

Mikroscopy II. (Special microscopes): 2.34, 2.35

Light absorption: 2.77, 2.78, 2.152

Optics of the eye:  4.5, 4.9

Nuclear medicine: 12.1, 12.4, 12.6