Imaging Pearls ❯ Contrast ❯ Techniques
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- “ Split bolus MDCT urography detected all proven cases of tumors of the upper urinary tract, yielding both high sensitivity and specificity. The split bolus technique has the potential to reduce both radiation dose and the number of images generated by MDCT Urography.”
Split-Bolus MDCT Urography with Synchronous Nephrographic and Excretory Phase Enhancement
Chow LC et al.
AJR 2007; 189:314-322 - “ 40 mL was administered at a rate of 2 mL/s after the unenhanced phase. After a 4-minute delay, an additional 80 mL was administered at 2 mL/s and the abdominal compression devise was inflated. The contrast enhance, breath hold abdominal phase images were acquired 120 seconds after the second contrast bolus, yielding images in synchronous nephrographic and excretory phases of enhancement.”
Split-Bolus MDCT Urography with Synchronous Nephrographic and Excretory Phase Enhancement
Chow LC et al.
AJR 2007; 189:314-322
- "Modified angiocatheters may have the potential to reduce extravasation events in patients by reducing wall stress."
Modifying Peripheral IV Catheters with Side Holes and Side Slits Results in Favorable Changes in Fluid Dynamic Properties During the Injection of Iodinated Contrast Material
Weber PW et al.
AJR 2009; 193:970-977 - "Numerous calculations showed that the addition of side holes or slits resulted in a 9-30% reduction of the velocity of contrast material exiting the exit hole of the catheter."
Modifying Peripheral IV Catheters with Side Holes and Side Slits Results in Favorable Changes in Fluid Dynamic Properties During the Injection of Iodinated Contrast Material
Weber PW et al.
AJR 2009; 193:970-977 - "Use of prefilled contrast syringes with single-use saline syringes is associated with time-efficient assembly of injection systems and prevents microbiologic contamination in clinical routine, especially in the care of immunocompromised patients."
Microbiologic Contamination and Time Efficiency of use of Automatic MDCT Injectors with Prefilled Syringes: Results of a Clinical Investigation
Buerke B et al.
AJR 2010; 194:299-303 - "We conclude that use of prefilled contrast syringes and single-use saline syringes allows time efficient assembly of injection systems, prevents microbiologic contamination, and avoids the hazards of septic complications in clinical routine, especially in imaging of immunocomprised patients."
Microbiologic Contamination and Time Efficiency of use of Automatic MDCT Injectors with Prefilled Syringes: Results of a Clinical Investigation
Buerke B et al.
AJR 2010; 194:299-303