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Cystogram

PROCEDURE: CYSTOGRAM
SECTION: GENITOURINARY 5.7
ORIGINAL DATE: 9-21-99
DATE REVISED: 8-16-15

Indications: Evaluation of vesicoureteral reflux

Contraindications: None

Exam time length: 45 minutes – 1 hour 
(It helps to have a video playing when you bring child in.) May call a child-life specialist to help as well. 
Jenny Noel, pg 1341, ext. 55936.

Patient Preparation:

  • Patient comes to department with a Foley catheter in place. 
  • Oral versed may be given to patients greater than 2 years old. This will be determined by the ordering physician. 
  • Place a spot marker on the Rt shoulder during the beginning of the cine acquisition then remove for remainder of exam.
  • Drain residual urine from catheter before starting.
  • Mark Rt shoulder on post void image.

Radiopharmaceutical & Dose

  • Radiopharmaceutical: Na 99mTcO4-‑ 
  • Pediatric Dose: 300 – 600 microcuries 
  • Adult Dose: 1 mCi

STATIC ACQUISITION PARAMETERS

Time interval between tracer injection & imaging: None

Collimator: LEAP

Patient position

  • Upright sitting on bedpan with back to camera. Infants lying on bed with posterior camera.
  • Image from base of bladder and up towards head.

Energy: 140 keV

Matrix

  • 128 x 128 for dynamic
  • 256 x 256 for static

Time /View

  • Posterior dynamic of filling/voiding at 15 seconds/frame for 1800 seconds or until fill/void complete. NOTE computer time for end filling & beginning of voiding. Record filling volume.
  • Post-void static for 180 seconds

Images taken

  • Posterior dynamic of filling and voiding in one continuous acquisition.
  • Post-void posterior image

Screen caps to make: Image dynamic 6 x 5, on low intensity, using as many pages as needed to capture the whole dynamic and text on 10 sec/frame. Image post-void on a 1 on 1 & text on markers on Rt Shoulder. Text filling volume of saline.

Send to FUJI: Screen caps

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