Diagnostic Imaging (A+ Graded Already)

Define technique chart correct answers A chart based on tissue thickness and anatomic parts that can be consulted to predetermined machine settings Purpose of technique chart correct answers Provide a consistent method of choosing the proper exposure factors to create a diagnostic xray. Technique charts are standardize for: correct answers Speed of xray film, speed of intensifying screens, SID, amount of beam filtration, type of quality of developer solution, temperature and time of film developing, and use of grid Different charts for: correct answers Different machines, screen vs non-screen film, table-top vs cassette tray, different film-screen combinations, species specific and anatomy specific kVp variable chart correct answers kVp changes for different tissue thickness/type. mAs is constant mAs-variable chart correct answers Suitable for machines with limited exposure. mAs varies by tissue thickness/type. kVp is constant Piezoelectric crystal correct answers Convert electricity to soundwave, and spend only 1% of their time being electricity T/F: Anechoic tissue reflects more echoes than hyperechoic tissues. correct answers False T/F: Urine causes more attenuation than renal medulary papillae correct answers True T/F: The renal medullary papillae are more hyperechoic than urine correct answers True T/F: Echogenicity is an indication of liquid or solid compostion of tissues. correct answers True T/F: Regarding abdominal ultrasound fasting and a relatively full bladder are optimal correct answers True T/F: Regarding abdominal ultrasound allowing the patient to urinate and defecate immediately prior is optimal correct answers False T/F: Regarding abdominal ultrasound fasting and a barium enema are optimal correct answers False T/F: Regarding abdominal ultrasound patients that have not been fasted should be stomach tubed to prevent GDV during the scan correct answers False An acoustic shadow is: correct answers An ultrasound artifact