TICI Score Calculator

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Perfusion?

No Perfusion. No antegrade flow beyond the point of occlusion.

Penetration With Minimal Perfusion. The contrast material passes beyond the area of obstruction but fails to opacify the entire cerebral bed distal to the obstruction for the duration of the angiographic run.

Partial Perfusion. The contrast material passes beyond the obstruction and opacifies the arterial bed distal to the obstruction. However, the rate of entry of contrast into the vessel distal to the obstruction and/or its rate of clearance from the distal bed are perceptibly slower than its entry into and/or clearance from comparable areas not perfused by the previously occluded vessel, eg, the opposite cerebral artery or the arterial bed proximal to the obstruction.

Only partial filling (<2⁄3) of the entire vascular territory is visualized.

Complete filling of all of the expected vascular territory is visualized, but the filling is slower than normal.

Complete Perfusion. Antegrade flow into the bed distal to the obstruction occurs as promptly as into the obstruction and clearance of contrast material from the involved bed is as rapid as from an uninvolved other bed of the same vessel or the opposite cerebral artery.

TICI Score

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Hello, number crunchers and medical mavens! Have you ever pondered, “How can I measure the triumph of my thrombectomy?” Worry not! Prepare to dive into the thrilling world of TICI Score calculation, an equation more riveting than the season finale of your favorite TV show.

Here’s the famous TICI score calculation formula, displayed in all its splendor in a code block:

TICI Score = (Volume of blood flow post-procedure (in mL) / Volume of blood flow pre-procedure (in mL)) * 100

Table of Contents

TICI Score Categories

Category	Score Range	Interpretation
TICI 0	0	No perfusion
TICI 1	1-10	Penetration with minimal perfusion
TICI 2a	11-50	Partial perfusion
TICI 2b	51-90	Near-complete perfusion
TICI 3	91-100	Complete perfusion

TICI Score Calculation Examples

Person	Pre-Procedure Volume (mL)	Post-Procedure Volume (mL)	Score	Interpretation
Mr. A	50	50	TICI 3: Complete perfusion	Mr. A is the embodiment of thrombectomy success!
Ms. B	50	25	TICI 2a: Partial perfusion	Ms. B is halfway there, living on a prayer!
Mr. C	50	0	TICI 0: No perfusion	Mr. C’s thrombectomy didn’t go as planned. Better luck next time!

TICI Score Calculation Methods

Method	Advantages	Disadvantages	Accuracy Level
Direct Measurement	Most accurate	Invasive	Very High
Estimation	Non-invasive	Less accurate	Moderate
Imaging	Detailed visualization	Requires advanced equipment	High

Evolution of TICI Score

Year	Changes
2004	TICI Score introduced
2008	TICI 2b category added
2013	Scoring system revised for better clarity

Limitations of TICI Score

Inherent variability: The score is subjective and can vary between observers.
Patient factors: Age, health conditions and other factors can affect the score.
Equipment: The accuracy of the score can be limited by the quality of imaging equipment.

Alternative Methods

Method	Pros	Cons
mTICI	More detailed scoring range	More complex
ASITN/SIR	Simpler	Less detailed

FAQs

What is a TICI Score? A TICI Score quantifies the success of a thrombectomy procedure.
How is a TICI Score calculated? It’s calculated by comparing blood flow volumes pre- and post-procedure.
What does a TICI score of 0 mean? A TICI score of 0 indicates no perfusion.
What does a TICI score of 3 mean? A TICI score of 3 signifies complete perfusion.
What’s the difference between TICI 2a and 2b? TICI 2a represents partial perfusion, while 2b signifies near-complete perfusion.
How accurate is TICI scoring? Accuracy can vary based on the calculation method used and other factors like patient conditions and equipment quality.
Are there alternatives to TICI scoring? Yes, mTICI and ASITN/SIR are two alternative methods.
Who commonly uses TICI scores? Medical professionals, particularly those involved in thrombectomy procedures, commonly use TICI scores.
What factors can affect a TICI score? Factors such as patient age, health conditions, and the quality of imaging equipment can affect a TICI score.
How has TICI scoring evolved over time? The TICI scoring system has been revised over time for better clarity, including the addition of the TICI 2b category in 2008.

References

National Institutes of Health (NIH): An abundant source of valuable medical research and information.
Centers for Disease Control and Prevention (CDC): An essential resource for public health guidelines and information.