Subject(s)
Breast Neoplasms , Early Detection of Cancer , Female , Humans , Mammography , Mass Screening , Personal SatisfactionABSTRACT
International guidelines recommend assessing women's satisfaction with breast cancer screening programmes; however, validated tools are needed. A systematic review to identify and evaluate the quality of validated instruments for screening satisfaction, from 01/1965 until 11/2017 was performed. From 3283 individual citations, six instruments were identified. Evaluation of the MammoGraphy Questionnaire using the COSMIN checklist resulted in 'good' to 'excellent' scores in most assessed domains, while the other tools were mostly 'poor'/'fair' quality or did not provide enough information for assessment. Nevertheless, substantial changes in screening processes and programmes have been implemented in recent years. Thus, further development work is needed.
Subject(s)
Breast Neoplasms/diagnosis , Early Detection of Cancer/psychology , Mammography/psychology , Mass Screening/psychology , Patient Satisfaction , Adult , Breast Neoplasms/prevention & control , Breast Neoplasms/psychology , Female , Humans , Middle Aged , Psychometrics , Surveys and QuestionnairesABSTRACT
To conduct interventional procedures in MRI, reliable visualization of interventional devices such as catheters is necessary. For this purpose, the use of inductively-coupled radio frequency (ICRF) coils has been proposed. Without a wired connection, the signal around the ICRF coil is amplified, enabling catheters to be visualized. The wireless connection allows easy handling of catheters, in some pulse sequences, however, it might be difficult to differentiate the catheters from anatomical background information. In this work, a novel ICRF coil visualization method, which allows separation of the catheter and the anatomical information by using the reverse and forward polarization modes of a coil, is proposed. This method allows images of the anatomy and the catheter to be combined into a color-coded image. First, an ICRF coil with decoupling diodes was constructed; we call this a receive-coupled RF (RCRF) coil. The RF safety profile of the RCRF coil is shown to be better than the ICRF coil. Second, to demonstrate the feasibility of this method, a receive-only birdcage coil without a hybrid coupler was constructed and then connected to a scanner as a two-channel phased-array coil. MR signals acquired from two channels were added after phase adjustments to create the reverse and forward polarization mode images. The reverse polarization mode image contained signal only from the RCRF coil, but the forward polarization mode displayed both anatomical information and the RCRF coil. The performance of this novel tracking method was tested in phantom and animal experiments. Color-coded images demonstrate the feasibility of the method to track catheters using RCRF coils.
Subject(s)
Catheterization/instrumentation , Image Enhancement/instrumentation , Image Interpretation, Computer-Assisted/instrumentation , Magnetic Resonance Imaging, Interventional/instrumentation , Magnetic Resonance Imaging/instrumentation , Magnetics/instrumentation , Telemetry/instrumentation , Animals , Catheterization/methods , Equipment Design , Equipment Failure Analysis , Esophagus/pathology , Image Enhancement/methods , Image Interpretation, Computer-Assisted/methods , Magnetic Resonance Imaging/methods , Magnetic Resonance Imaging, Interventional/methods , Rabbits , Telemetry/methodsABSTRACT
OBJECTIVE: The purpose of this study was to compare conventional sonography, real-time spatial compound sonography, tissue harmonic sonography, and tissue harmonic sonography merged with compound sonography for overall image quality, lesion conspicuity, and elimination of artifacts. SUBJECTS AND METHODS. In this study, 150 lesions in 122 randomly selected patients with various abdominal and pelvic lesions were evaluated. For each lesion, sonograms were obtained with four techniques: conventional sonography, real-time spatial compound sonography, tissue harmonic sonography, and tissue harmonic compound sonography. All images were reviewed and graded independently by two observers for overall image quality, lesion conspicuity, and elimination of artifacts. RESULTS: Statistical analysis showed that for overall image quality, lesion conspicuity, and elimination of artifacts, tissue harmonic compound sonography was significantly superior to all of the other techniques; real-time spatial compound sonography was better than tissue harmonic sonography; and conventional sonography was the least valuable of all (p < 0.001). When data were analyzed separately according to lesion types, tissue harmonic compound sonography was significantly superior for revealing stone diseases, liver cysts, gallbladder polyps, and uterine myomas. For the remainder of lesion groups, spatial compounding was superior to tissue harmonic sonography for all aspects of evaluation, and conventional sonography was the least valuable (p < 0.05). CONCLUSION: In abdominal and pelvic scanning, tissue harmonic compound sonography provides the best overall image quality, best lesion conspicuity, and least artifacts of all the evaluated imaging modes. Spatial compound sonography is better than tissue harmonic sonography for the evaluation of lesions in general, despite some differences among lesion groups.
