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Radiological diagnosis of renal colic
ONDRUŠKOVÁ, Lenka
The thesis focuses on performance frequency of particual radiodiagnostic imaging methods which are indicated to patients with diagnosis of undefined renal colic Another aim is comparison of individual imaging methods based on radiation pressure together with highlighting of advantages and disadvantages of every individual examination. The thesis is introduced with a brief anatomical and physiological summary of urinary system. The next paragraph deals with the issue of urolithiasis, classification of urinary stones and factors contributing to formation of urolithiasis. Undoubtedly, one of the most important passages in the theoretical part of the thesis is a detailed description of individual imaging methods used in urology. Every medical examination includes procedure, preparation of a patient, indication, contraindication, benefits and drawbacks typical for implementation of imaging methods. The last part of the theoretical section covers a comparison of particular medical srceenings according to the negative radiation effects on the patient and according to the financial point of view. The second part of the thesis focuses on hypothesis and description of the research methodology. The aim of the thesis is seen in a comparison as well as in a research of frequency of individual imaging methods used in renal illnesses causing renal colic. The research was focused on this aim and all useful data in connection with description of methodology were applied. Another goal of the research was verification of hypothesis which is based on the belief that methods without using contrastive substances are more frequently applied. Methodology used in the bachelor thesis describes collecting of data, processing and comparison of patients´ files who underwent treatment of renal colic in the urology ward in the hospital in Havlíčkův Brod. The research was mainly oriented on imaging methods using contrasting substances as well as non-contrasting methods. Amongst these imaging screenings belong ultrasonography, plain radiograph of kidneys, intravenous excretory urography, computed tomography with low-dose technique and CT with application of contrastive substance. The data was collected from the hospital information system service known as NIS in Havlíčkův Brod. The first data collection method was aimed at group of patients with renal colic diagnosis who have experienced radiodiagnostic examination methods in the hostital in Havlíčkův Brod in 2012. The group consisted of one hundred patients. In the first place, frequency of occurrence of urolithiasis and its frequency of particular examination of both sexes was examined. It was followed by the research of the frequency imaging methods for the entire year 2012. The final research was focused on the number of condactive examinations using contrastive substance. In the end, it was compared to the number of realized screenings without contrasing substance. The second data collection included the number of conducted screenings in last fifteen years. Out of this data frequency of examinations in the years 1999 and 2013 were compared and represented. For the clear arrangement, the data was reported and graphically presented for the individual years in the period from 1.1.1999 till 31.12.2013. The results of the first and the second collection data method were compared and assessed. As a result it can be assumed that hypothesis has been confirmed. In comparison of frequency of the conducted contrasing examinations in 2012, imaging methods without application of the contrastive substance were in percentage majority. The same outcome was also shown after researching the data from last fifteen years. Nephrogram radiology was the most frequently conducted type of examination meanwhile the least frequently used was CT examination with the application of contrasting substance.
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CT angiography vs. ultrasound imaging of the bloodstream - efectivity, limitation and impact on patients' health.
ADAMEC, Jaroslav
The subject of the BA thesis is "CT angiography vs. ultrasound imaging of the bloodstream - efectivity, limitation and impact on patients' health". Examination of blood vessels by computed tomography - CT angiography, using modern equipment and technological development, takes over the diagnostics of vascular diseases from digital subtraction angiography primarily due to the speed of the examination and the lesser invasiveness with regard to the patient. The second method treated in this thesis is ultrasonography. Which of these imaging methods yields better diagnostic information on blood vessel pathologies? Which entails fewer risks to the patient and which is more limited? I have tried to find the answers to these questions in this BA thesis. In this thesis I set out to find which of the two imaging modalities is more suitable for examining vascular diseases. A further aim of the thesis is to introduce and compare various examination methods of computed tomography and ultrasonography. The hypothesis of the BA thesis states: "Ultrasonography is a more suitable method for the examination of the blood vessel tree - it is a method which provides good diagnostic information and at the same time entails a lower risk to the patient than does computed tomography". The introductory part of the thesis is devoted to the anatomy of the blood vessel tree. It describes main blood vessels, veins, their construction and branches. This part also introduces the technological equipment which is used for the examination of the blood vessel tree - computed tomography machine, ultrasonography machine - and their historical development. The basic physical principles of these devices, their methods of imaging and general methods of the examination of the blood vessel tree are also described in this chapter. In the case of computed tomography it is CT angiography, and in ultrasonography it is Doppler examination. The chapter also briefly deals with the advantages and disadvantages of these methods and with the contrast media which are applied in connection with the examination of the vascular system. I have studied all available specialized literature and web sites related to the subject for the purpose of writing this BA thesis. Data from the Institute of Health Information and Statistics were used for the analysis of the technological equipment. Data from the information network of the R+S Benešov a.s. hospital were used for the analysis of the number of blood vessel examinations carried out by ultrasonography and computed tomography. Examination methods of the vascular system performed by computed tomography and ultrasonography have been summarized in the result. Furthermore, both modalities are compared in this chapter with regard to their utilization rate, limitations and risks. The chapter also includes an analysis of the data on the computed tomography and ultrasonography technology in the Czech Republic and on the number of blood vessel examinations carried out by computed tomography and ultrasonography. In the chapter "Discussion" I present my own opinion on the given matter. It also includes a reflection on the issue of indicating examinations on computed tomography. In the conclusion of the thesis, examination methods of the vascular system by computed tomography and ultrasonography are assessed, and established findings on the studied matter are summed up. After studying all available specialized literature I have found that it is impossible to determine which of the two imaging methods is more suitable for the examination of the blood vessel tree because each of them has its specific advantages and disadvantages. The two modalities are thus not opposed to each other in the decision making which method should be indicated; on the contrary, the two methods should be used in close collaboration. The hypothesis of the thesis therefore has not been proved.
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Imaging Methods in Antropology
KOBLASOVÁ, Věra
Abstract Imaging Methods in Anthropology. Anthropology, a science born in the 16th century, deals with humans. One of its branches is physical anthropology which includes forensic anthropology and osteology. The imaging methods in anthropology are indispensable tool for identification of the dead and for examination of mummies or other prehistoric bone material. Comparing of pre-death and after-death x-ray snapshots is essential for identification of human remains in forensic anthropology and odontology. The latest trend is 3D face reconstruction with the help of computed tomography. The aim of the thesis is: 1. To analyse all the methods available in the field of anthropology of the present time which use the radiology imaging methods. 2. To compare using of the computed tomography in the Czech Republic and other European countries. The data were obtained through questionnaires sent to anthropology institutes and museums dealing with photographing historical bone material and through searching and processing information focused on the topic of the theses. The results show that the imaging methods in anthropology are under-used. The anthropologists are fully aware of all available imaging methods but the methods are not used often enough because of financial and time consuming reasons. On the contrary to under-using the imaging methods in the Czech Republic the other European countries use the methods a lot more often. A hypothesis was established at the beginning of the research: ?All the available modern radiology imaging methods are not used enough in the Czech Republic. The hypothesis was confirmed. I would like to present the results of the theses at the specialist?s seminars of radiology assistants and to point out the possible further use of radiology imaging methods.
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Computer processing of tomography data
KONEČNÝ, Jan
Computer processing of tomography data Tomographs are one of the most important diagnostic devices, which are used in every hospital nowadays; they have already been so for a considerable period of time. The different types of tomographs and the processing of tomographic data and imaging of these data are the subject of this thesis. I have described the four most common types of tomography: X-ray Computed Tomography, Magnetic Resonance Imaging, Positron Emission Tomography and Single Photon Emission Computed Tomography. This thesis has described the basic principles of these devices, their technical parameters, their use and also different data formats, which are used for tomographic data. The practical part of my thesis is involved with software for viewing and processing of tomographic data. It specifically concerns freely available viewers such as MRIcro, ezDICOM, Amide, ImageJ and Gpetview. Their main functions and their pros and cons have also been described therein. The last part of my thesis has been devoted to SPM software that is used for an advanced processing of 3D tomographic data from PET, VBM and MRI as well as EEG and MEG imaging techniques. I have described these features and also those individual steps that are taken during the processing of particular sample data that has been taken from examinations on functional Magnetic Resonance Imaging. This thesis is addressed to all, those who want to learn more about tomographic data processing and mainly it should serve as an overview of free software for processing and viewing of these data.
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Ionizing radiation doses of the radiology assistants in the CT and PET/CT wards
MAZLOVÁ, Lenka
Hybrid methods, such as PET/CT, operating with the ionizing radiation, are being used more and more frequently, the number of wards working with this device increases in the Czech Republic. Just PET/CT belongs to the most modern imaging methods among them. In my thesis I compare the radiation doses to which the radiology assistants in the nuclear medicine ward and radiodiagnostics ward are exposed to. The part of the assessment is also the comparison of the radiation protection in the mentioned wards. From methodology point of view, I compared two wards, the hospital ``Na Homolce{\crqq}, where is situated the PET centre with the hybrid PET/CT device, and ``Úrazová nemocnice{\crqq}, equipped with the CT device. With the approval of the employees of the individual wards the data on the quantity of the examinations were processed for the period from 1. 1. 2008 to 30. 9. 2009. Data on the radiation doses were processed by the National Service of Personal Dosimetry in Prague. The number of staff in the individual wards varied during the monitored period, in common there were 13 people in each ward. Radiation load doses for each person were regularly registered during the monitored period. Dosimeters were used for the registration. The nuclear medicine ward uses personal and fingertip dosimeters. These are evaluated each month. On the contrary, the diagnostics ward - CT ward uses only personal dosimeters, evaluated once in three months. The values are presented in the tables. Comparing the personal dosimetry of the PET centre staff and the computer tomography staff, we come to the following results: Monitored period 1 and {$^3\!/\!_4$} year. Annual doses of the ionizing radiation per the person involved in the computer tomography can reach maximally 0,4mSv in the personal dosimetry. Doses per the representative of the PET centre equal to 2.88mSv per year for the personal dosimeters. The results confirmed the hypothesis assuming that the radiology assistants in the nuclear medicine ward are exposed to higher radiation load in comparison to the radiodiagnostics ward working with the CT device. The results comply with the limits for the radiation staff as stipulated in the notice 307/2002 Coll.
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Radiation risks potentially connected with computerized tomography in Czech republic
VEVERKA, Martin
Diagnostic X-rays are the most important man-made source of radiation exposure for the general population, contributing about 14% of the total annual exposure worldwide from all sources. However, although diagnostic X-rays provide great benefits, it is generally accepted that their use involves some small risk of developing cancer. The risk to an individual is probably small because radiation doses are usually low, but the large number of people exposed annually means that even small individual risks could translate into a considerable number of cancer cases. The aim of this work was to reestimate this risk on the basis of the annual number of CT examinations undertaken in the Czech Republic and typical doses applied. But there wasn't possible to find necessary data for planned reckonings by return, because their archiving isn't obligatory. This study, therefore, only describes common incidence of ionising radiation with human organism and further, all inevitable mathematically-physical equations needed for realization of primary planned investigation, with all necessary datal inputs included. In findings of this work there are drafted and demonstrated procedures, how to obtain and cultivate needed data ,so it was possible to compare it with technical literature.
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Indications of individual imaging femoropatellar joint investigations
KOLÁŘ, Jiří
The main theme of this bachelor work is to evaluate the indication of single imaging methods for examinations in the area of the patellofemoral joint. The work contains shortly summarized anatomy-physiology conditions in this area, including anatomy variations of the patella and the patellofemoral joint pathology. The work continues with a description of single indicated imaging methods. The basic is a skiagraphy examination, every single projection is described in details, including a historical overview of the axial patella projection. Other methods which are mentioned are the artrography, the magnetic resonance imaging, the computed tomography and the scintigraphy. Issues of contraindications and risks for patients related to examinations are mentioned, too. A level of suitability how to use other examination methods, especially MRI, is considered on a chosen patient sample. At first plain pictures were done, some patients undertook ultrasonography examination and finally a magnetic resonance imaging examination was indicated. The computed tomography and the scintigraphy are not usually used for patellofemoral joint indications. The author compares financial and time demands of each method. The cheapest seem to be plain pictures and the sonography, on the other hand the most expensive is the magnetic resonance imaging, which is also the best way in the diagnostics at the same time. The magnetic resonance imaging method is the most contributory for a valuation of cartilages and tender joint parts. The time demands make a part of the comparison, too.
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Present possibilities of using X-ray technology for examination of urology diseases
PODEŠVOVÁ, Jitka
Imaging methods play an essential role in the diagnostic algorithm by determining the disease character in any part of the human body. The same applies to uroradiology where we use both standard methods and recent modalities. In the opening part this theses I mention anatomical and physiological aspects of the urinary tract and describe conventional radiology methods, digitally processible (ultasonography, computer tomography, megnetic resonance) and interventional. Individual examination methods contain comments related to indication and contra-indication when applying a contrast agent and how to prevent allergic reactions, or possibly how to mange them if they have already occurred. In the following part of thesis I try to describe and evaluate costs of each examination. After a brief summary of radiating load in radiology methods I try to work out statistically a patient file examined on x-ray department in the Krnov´s hospital in October and November 2006 where I monitored whether urologists observe the algorithm of examination methods at patients with urological diseases.
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Conventional imaging procedure in radiology with a view to urogenital system (the education programe)
DVOŘÁČEK, Petr
In my work I concentrate on the basic examination methods for the urogenital system. It is about excretory urology (VUG), cystograph, cystouretrograph, retrograde uretrograph (ascending), histerosalpingograph (HSG), retrograde (ascending) pyelograph and antigrade (descending) pyelograph. Very detailed I describe the indication, the preparation and the follow through of the examinations. I am trying to compare non-invasive and invasive methods in the diagnosing of the urogenital system. I use the statistics of chosen hospitals in south of Czech Republic area in the time-span between 2000 and 2006. The modern radiodiagnostics methods together with the non-invasive and invasive methods in the diagnosing of the urogenital system still have non replaceable meaning in algorithm of the examinations in the urogenital system.
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