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Image fusion within prostate biopsy
ŽŮČEK, David
This study deals with the use of image fusion within prostate biopsy, which is a method used for several decades, which serves to accurately capture pathological findings in the prostate, primarily prostate cancer. The combination of imaging modalities, which are magnetic resonance and intracavitary ultrasonography, is used to guide the biopsy. The aim of the study was to study the unusual situation where one and the same radiological team performs both procedures at the same time. Procedures from which the prostate biopsy methodology guided by image fusion is formed. Subsequently, we established a hypothesis that specific benefits can be found when the same doctor and radiology assistant perform both procedures. Procedures which consists of image fusion of magnetic resonance imaging and intracavitary ultrasonography, which guide the prostate biopsy of the same patient. The methodology of the theoretical part was the study of mostly foreign professional medical articles and literature and the subsequent use of the information to clarify the described method. In the practical part, the output data of physical examination of 59 patients were processed with the use of ROC analysis and then compared with two foreign studies to verify the established hypothesis. The data were provided by Mr. MUDr. Zdeněk Chudáček Ph.D. The results of the ROC analysis and its comparison with foreign studies confirmed the hypothesis, and therefore the presence of specific advantages of the studied unusual situation of performing a prostate biopsy in the way determined at the beginning of this study. The results of this study will be used in a broader journal publication, which aims to bring the issue of this study to the professional radiological public.
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Possibilities of using advanced MR techniques in pelvic imaging
Ryznarová, Zuzana ; Malíková, Hana (advisor) ; Büchler, Tomáš (referee) ; Lisý, Jiří (referee)
(AJ) The three aims of the work were as follows: 1. Comparison of prostate magnetic resonance (MR) examination results from 1.5 T and 3 T scanners in patients with prostate carcinoma (PCa). MR findings of 103 patients (ages 44-72 years) were compared with histopathological results after radical prostatectomy. The work was focused on the accuracy of predicting local cancer staging and determining prostate tumour location. Patients were divided into three groups (A, B and C) based on the type of MR scanner and protocol used. Patient groups A and B were examined in 1.5T and 3T MR scanners equipped with surface coils in the identical multiparametric MR imaging protocol included dynamic contrast examination (DCE). Patient group C was examined in a 3T MR scanner without DCE. The highest accuracy of predicting the stage of PCa was seen in patients examined in 3 T MR scanner with DCE included in the protocol, however, no significant differences were seen between results from 1.5 T and 3.T MR scanners. No significant difference was also found in the accuracy of determining the location of prostate tumour between 1.5 T and 3T MR examinations, however, there were significant differences between sequences used, with the highest accuracy attained by using a combination of T2 weighted sequences and diffusion...
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Possibilities of using advanced MR techniques in pelvic imaging
Ryznarová, Zuzana ; Malíková, Hana (advisor) ; Büchler, Tomáš (referee) ; Lisý, Jiří (referee)
(AJ) The three aims of the work were as follows: 1. Comparison of prostate magnetic resonance (MR) examination results from 1.5 T and 3 T scanners in patients with prostate carcinoma (PCa). MR findings of 103 patients (ages 44-72 years) were compared with histopathological results after radical prostatectomy. The work was focused on the accuracy of predicting local cancer staging and determining prostate tumour location. Patients were divided into three groups (A, B and C) based on the type of MR scanner and protocol used. Patient groups A and B were examined in 1.5T and 3T MR scanners equipped with surface coils in the identical multiparametric MR imaging protocol included dynamic contrast examination (DCE). Patient group C was examined in a 3T MR scanner without DCE. The highest accuracy of predicting the stage of PCa was seen in patients examined in 3 T MR scanner with DCE included in the protocol, however, no significant differences were seen between results from 1.5 T and 3.T MR scanners. No significant difference was also found in the accuracy of determining the location of prostate tumour between 1.5 T and 3T MR examinations, however, there were significant differences between sequences used, with the highest accuracy attained by using a combination of T2 weighted sequences and diffusion...
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