https://cw.fel.cvut.cz/b242/ 2026-04-20T21:05:06+0200 https://cw.fel.cvut.cz/b242/ https://cw.fel.cvut.cz/b242/lib/tpl/bulma-cw/images/favicon.ico text/html 2025-01-21T10:49:00+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/examquestions2022?rev=1737452940&do=diff Medical Imaging course exam topics This is a version for summer 2022. Besides the topics mentioned below, you should also know the topics explained in the laboratory sessions. I might also ask you to do simple calculations using mathematical formulas that we talked about. text/html 2025-05-20T13:13:39+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/examquestions2023?rev=1747739619&do=diff Medical Imaging course exam topics This is a version for summer 2023. Besides the topics mentioned below, you should also know the topics explained in the laboratory sessions. I might also ask you to do simple calculations using mathematical formulas that we talked about. text/html 2025-04-28T10:07:05+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs?rev=1745827625&do=diff Cvičení / Lab organization This is the main wiki page for labs in Medical Imaging Systems (codes BAM33ZSL, BEAM33ZSL). Teaching assistants: * Jiří Anýž <anyzjiri@fel.cvut.cz> * Jan Šanda <jan.sanda@lfmotol.cuni.cz> * Jan Kybic <kybic@fel.cvut.cz> Plán cvičení (Timetable and topics) Labs take place on Wednesdays at 9:15-10:45 or 11:00-12:30, in room text/html 2025-02-12T13:33:46+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_01_introduction_ttest?rev=1739363626&do=diff Lab 01: Introduction to Matlab, hypothesis testing Topics: 1 Introduction to Matlab Matlab is available at CTU Download As a warm-up exercise, we will try a few simple image transformations using Matlab. Download the image by clicking on the image [ CT scan of brain] Use imread$$ t = \frac{\bar{x} - \mu_0}{\frac{s}{\sqrt{n}}}$$$\bar{x}$$\mu_0$$s$$n$$n - 1$$$ t = \frac{\bar{x}_1 - \bar{x}_1}{ \sqrt{ \frac{s_1^2}{n_1} + \frac{s_2^2}{n_2} } } $$$\bar{x}_1$$\bar{x}_2$$s_1$$s_2$$n_1$$n_2$$x_1$… text/html 2025-02-25T14:42:02+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_02_ct_images?rev=1740490922&do=diff Lab 02 : CT Images Topics: VisualizationClassification HW02 Homework [3 pts][2 pts] (A) CT Data Processing Download the [ MITK Workbench] application. Load the testing image lowdose_CT.nii, if the data are too large for your PC to process, you can try the smaller lowdose_CT_cropped.nii.gz file. Optionally you can look at T1-weighted images of lower leg $[W_l, W_u]$$W_l$$W_u$$[W_l, W_u]$$(W_u + W_l) / 2$$W_u - W_l$$I(x,y)$$\theta_l \leq I(x, y) \leq \theta_u$ text/html 2025-03-05T13:53:53+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_03_xray_decay?rev=1741179233&do=diff Lab 3 : X-rays, radioactive decay 1 X-Rays Useful formulas $E = hf = h \frac{c}{\lambda}$$I = I_0 \cdot e^{-\mu d}$$\mu_m = \frac{\mu}{\rho_m}$$\frac{1}{2} = \textrm{e}^{-\mu d}$$c \approx 3 \cdot 10^8 m \cdot s^{-1}$$h \approx 4.135 \cdot 10^{-15} eV \cdot Hz^{-1}$ 1.1 Energy of a photon (I) A photon with wavelength $100~nm$ has energy of $12~eV$, what is the energy of a photon with wavelength $2~nm$? [600 eV] HW 1.2 Energy of a photon (II) [1 pt] The X-ray tube (rentgenka$10~keV$$10~W/cm^… text/html 2025-08-31T20:51:25+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_04_us_theory?rev=1756666285&do=diff Lab 04 : Ultrasound theory Homework [3 pt][2 pt] 1 US exercises Useful formulas: $\lambda = \frac{c}{f}$$c = \frac{1}{\sqrt{\rho K}}$$K$$E$$Z_t = \rho c$$R = \frac{(Z_1 - Z_2)^2}{(Z_1 + Z_2)^2}$ 1.1 Signal propagation 1.1.1 The time delay between transmission and the arrival of the reflected wave of a signal using ultrasound travelling through a piece of fat tissue was $0.13 ms$$1450 m/s$$1540 m/s$$1000 kg \cdot m^{-3}$$1.54 \cdot 10^6 Rayl$$30.8 \cdot 10^6 \frac{kg}{m^2 \cdot s}$$429 \fra… text/html 2025-03-28T09:42:50+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_05_ussim?rev=1743151370&do=diff Lab 05 : Ultrasound simulation Homework [2 pts][3 pts] Field II simulator In this part we will examine the basic properties of US imaging systems using the Field II simulator. The Field II simulator is an environment for the numeric simulation of ultrasound signals. The simulator is capable of numerically simulating emitted and received acoustic fields for a broad range of acoustic transducers. With the simulator it is for example possible to acquire data and reconstruct images similarly to a … text/html 2025-04-14T14:02:43+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_06_radon?rev=1744632163&do=diff Lab 06 : CT Radon transform, forward projection Topics: -- HW06 Assignment The homework has four consecutive parts. When completed, you will have your own implementation of the forward projection ( Radon transform) used in CT imaging. A set of projections with varying direction $\theta$$x, y$$p$$q$$q$$p$$\theta$\begin{align} p &=& x \cdot \cos \theta + y \cdot \sin \theta \\ q &=& -x \cdot \sin \theta + y \cdot \cos \theta \end{align}$[-p_m, p_m] \times [-q_m, q_m]$$(x, y) \in [-x_m, x_m] \t… text/html 2025-04-11T13:58:40+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_07_backproj?rev=1744372720&do=diff Lab 07 : CT Reconstruction, Back-projection Topics: -- HW07 Assignment Today's homework is subdivided into three parts (and one additional bonus part) and its main topic is the inverse of the forward (Radon) projection transform, that was the topic of $J(\theta, p)$$f(x, y)$$f_{\theta}(x, y)$$J(\theta, p)$$$f_{\theta}(x, y) = J(\theta, x \cos \theta + y \sin \theta)$$$$f_{\text{unfilt}}(x, y) = \mathcal{B}[\mathcal{R}f] = \sum_\theta {f_{\theta}(x, y)}$$$\mathcal{F}_2$$f(x, y)$$\mathcal{F}_1 [… text/html 2025-04-16T10:45:00+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_08_iterrecon?rev=1744793100&do=diff Lab 08: Algebraic reconstruction technique Radon transform Radon transform is a transform that is used for example in computed tomography. Revise the equations describing the Radon transform in Radon transform equations. In the previous lab we used the Radon transform in a continuous space and we discretized the equation in order to apply it to digital images. Another form of the Radon transform for digital images is in Equation 1. This form is more suitable for the reconstruction of a sinog… text/html 2025-05-14T12:38:35+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/labs2025_12_mribloch?rev=1747219115&do=diff Lab 12 : MRI Basics In today's lab we will examine the basic principles of Magnetic Resonance Imaging (MRI). Review the MRI lectures [ MRI - introduction, principles, excitation, relaxation ] and [ MRI - spin-echo, Fourier imaging ]. A very rich information source on the topic of MRI with a lot of illustrations and animations offers [MRI Questions]. The relationship between the Bloch equations and the relaxation times is shown $90^\circ$$T_1, T_2$$M_{xy}$$M_z$$90^\circ$$T_1$$T_2$$T_2$$T_1$$$U … text/html 2025-06-25T17:02:13+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/lessons?rev=1750863733&do=diff ZSL Zobrazovací systémy v lékařství / Medical Imaging Systems Přednášky / Lectures Monday, 14:30-16:00, room KN:E-301, Charles square. Přednášející/Lecturers: Jan Kybic (JK), André Sopczak (AS), Vít Herynek (VH) The schedule is preliminary and may be changed. Updated study materials will appear here before the lecture. text/html 2025-02-03T11:14:27+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/start?rev=1738577667&do=diff BAM33ZSL / A6M33ZSL - Zobrazovací systémy v lékařství / Medical Imaging Systems Obsahem předmětu je koncepce, vlastnosti a struktura zobrazovacích systémů užívaných v současné době v lékařství. Jedná se 2D mikroskopické, rentgenové a ultrazvukové zobrazovací systémy včetně dopplerovského ultrazvuku. Dále se budeme zabývat tomografickými (3D) systémy: počítačovou tomografií (CT), magnetickou rezonancí (MRI) včetně funkční MR a nukleárními zobrazovacími metodami (PET,SPECT).… text/html 2025-04-24T15:05:08+0200 Anonymous (anonymous@undisclosed.example.com) https://cw.fel.cvut.cz/b242/courses/zsl/zkouskazsl?rev=1745499908&do=diff Zkouška z předmětu Zobrazovací systémy v lékařství / Medical Imaging Systems course exam Termíny zkoušek v roce 2025: / The exam dates in 2025: 26.5.11.6.25.6. Podrobnosti * Zkoušku tvoří písemný test, který lze psát česky i anglicky.