INDICATIONS: PAINFUL Hematuria, Kidney Stones, Flank Pain

CT KUB

INDICATIONS: PAINFUL hematuria, kidney stones, flank pain

PATIENT PREP: None

IV CONTRAST: None

ORAL CONTRAST: 32 oz Water 30 Minutes Prior to Scan, and

12 oz Water Immediately Prior to Scan.

POSITIONING: Feet First Supine, Arms above head

TOPOGRAMS: AP. Range: Above dome of diaphragm through ischial tuberosities. 35 mA, 120 kV.

SCAN TYPE: Spiral/Helical

NOTES: Full bladder

If stones are seen in the bladder or at the UVJ, consult the radiologist about possible Low Dose Prone scan through the bladder.

ALARA – Keep radiation dose As Low As Reasonably Achievable.

KUB

Scan
Range / ScanDirection
Scan Type / Respiration / Scan
Delay
(Seconds) / CARE
DOSE
4D / Quality
Reference
mAs / CARE
kV / Quality
Reference
kV / Detector Configuration
Slices Per Tube Rotation / Pitch
Table Increment/Speed:
(mm/rotation) / Rotation
Time
(Seconds) / SFOV
(cm)
Dome of Diaphragm
Through
Ischial Tuberosities / Craniocaudal
Spiral/Helical / Suspended
Inspiration / 5
Seconds / ON / 120 / ON / 120 / Detectors: 64 x0.6 mm
Slices Per Tube Rotation: 32 / Pitch: 0.8
Table Increment/Speed:
15.36 mm/rotation / 0.5
Seconds / 50
cm
Plane / SAFIRE
Strength / Slice
Thickness / Interval / Kernal / Window
Width/Level / DFOV
(cm)
RECON – AXIAL SOFT TISSUE / Axial / ON
3 / 3.0 mm / 3.0 mm / I40f
Medium / Abdomen
300/40 / FOV just beyond
patient’s body
RECON – AXIAL LUNG / Axial / ON
2 / 1.0 mm / 1.0 mm / I70f
Very Sharp ASA / Lung
1200/-600 / FOV just beyond
patient’s body
RECON – CORONAL SOFT TISSUE
Coronals Angled in Plane to Body Part / Coronals Angled in Plane to Body Part
Recon Card 3D Coronal MPR / ON
3 / 3.0 mm / 3.0 mm / I40f
Medium / Abdomen
300/40 / FOV just beyond
patient’s body
RECON – SAGITTAL SOFT TISSUE
Sagittals Angled in Plane to Body Part / Sagittals Angled in Plane to Body Part
Recon Card 3D Sagittal MPR / ON
3 / 3.0 mm / 3.0 mm / I40f
Medium / Abdomen
300/40 / FOV just beyond
patient’s body

*The operator must check the CTDIvol before and after the scan to ensure it is within the allowed dose range. Scans performed outside of the allowed range must be

documented and reviewed by the designated radiologist and/or physicist.

Allowed CTDIvol Dose Ranges:3 mGy – 50 mGy

XR29 Dose Notification Value (CTDIvol):50 mGy

Approximate Values for CTDIvol
Patient Size / Weight (kg) / Weight (lbs) / CTDIvol (mGy)
Small / 50-70 / 110-155 / 10-17
Average / 70-90 / 155-200 / 15-25
Large / 90-120 / 200-265 / 22-35
Reference: AAPM

*The AAPM recommended NEMA XR29 Dose Notification Value for an adult torso is 50 mGy. Dose notification levels less than the AAPM recommended can be set. The maximum CTDIvol should match the dose notification value. Exams with CTDIvol values less than the minimum allowed range should not be performed unless approved by a radiologist.

NETWORK:Exam to PACS5/2018