|
|
Sensing signals of a sensor in digestive tract
Raška, Marek ; Láčík, Jaroslav (referee) ; Raida, Zbyněk (advisor)
Wireless capsule endoscopy (WCE) is a system for capturing images of human digestive tract for medical purposes. The antenna is one of the most important parts of the system. In this report, I present a solution for a system operating in the 2.4 GHz and 915 MHz ISM band. The capsule transmitter contains a conformal loop antenna placed on its outer wall. The planar monopole with a partial ground is used as a receiver. The systems have been verified by numerical simulations with a phantom representing digestive tract. The transmitting modules have the bandwidth of several GHz according to simulations. This allows the antenna to tolerate various effects of living tissues. The receiving antennas have the bandwidth of hundreds of MHz. The path loss of the radio link between antennas operating in 2,4 GHz band is lower than 94 dB for any capsule orientation and location. This does not ensure a sufficient signal strength at the receiving antenna. In contrast, the system operating at 915 MHz ensures sufficient signal level at the receiver.
|
|
|
Sensing signals of a sensor in digestive tract
Raška, Marek ; Láčík, Jaroslav (referee) ; Raida, Zbyněk (advisor)
Wireless capsule endoscopy (WCE) is a system for capturing images of human digestive tract for medical purposes. The antenna is one of the most important parts of the system. In this report, I present a solution for a system operating in the 2.4 GHz and 915 MHz ISM band. The capsule transmitter contains a conformal loop antenna placed on its outer wall. The planar monopole with a partial ground is used as a receiver. The systems have been verified by numerical simulations with a phantom representing digestive tract. The transmitting modules have the bandwidth of several GHz according to simulations. This allows the antenna to tolerate various effects of living tissues. The receiving antennas have the bandwidth of hundreds of MHz. The path loss of the radio link between antennas operating in 2,4 GHz band is lower than 94 dB for any capsule orientation and location. This does not ensure a sufficient signal strength at the receiving antenna. In contrast, the system operating at 915 MHz ensures sufficient signal level at the receiver.
|
|
| |
|
| |
|
| |
|
|
Nursing process in patiens undergoing endoscopic examination methods.
FORŠTOVÁ, Eliška
In recent decades the endoscopy plays an important role in detection and subsequent treatment of diseases, through which the pathological changes in all hollow organs can be viewed and controlled either by physiological or artificial pathway. A great emphasis is put on care which is provided by the medical personal during the endoscopy. The first aim of the thesis was to find out how patients are prepared for the selected endoscopy and how they tolerate this preparation as well as the course and care after the examination and what information patients have about the steps after the endoscopy. The second aim was to find out how nurses prepare patients for the selected endoscopy and take care of them during and after those examinations. The research part of this thesis was processed as a form of qualitative research, a half-designed interview was chosen as a technique of data collection. There were two groups of researched ? patients who have undergone some of the selected endoscopy and nurses who took care of patients before, during and after the examination. The main results, which are summarized in the tables, include findings about the care which was provided to patients and nurser´s activities associated with the correct preparation before, during and after the examination. These tables are based on results of both reports. The results present that the patients are very well prepared by the nurses for selected endoscopy although these examinations are very stressful for the patients. That relates with their perception of care during the nursing process. Neither patients nor nurses can remember the complete set of acts associated with the preparation, the course and the nursing process after the endoscopy. In conclusion, nothing was neglected during the nursing process, including an information guideline after the endoscopy. Based on these results, an information booklet has been prepared which could have great benefits for patients undergoing selected endoscopy ? especially colonoscopy which is the most common endoscopy. The information booklet contains information about a suitable diet (without any left-overs) and food selection that the patient should follow before colonoscopy.
|
guest ::
