CO-RADS ( COVID 19 REPORTING & DATA SYSTEM )

📙 CO-RADS means COVID 19 REPORTING AND DATA SYSTEM

• It is used as a standardized diagnostic tool for assessing pulmonary involvement in COVID-19 patient & to categorize it based on unenhanced chest CT / HRCT (Computed Tomography) scan findings.  

• HRCT ( High resolution CT ) scan has a HIGH SENSITIVITY & HIGH SPECIFICITY values.
• So, False Positive & False Negative rates are low.

 

🌏CO-RADS 0 : 

• Level of suspicion for pulmonary involvement of COVID-19 is : NOT INTERPRETABLE
• Summary : Scan technically insufficient for assigning a score.
• Scans are incomplete or of insufficient quality, for example because of severe artifacts due to coughing or breathing.

 

🌏CO-RADS 1 :

• Level of suspicion for pulmonary involvement of COVID-19 is : VERY LOW
• Summary : NORMAL OR NON INFECTIOUS
• This category is identical to the “negative for pneumonia” 

 

🌖CO-RADS 2 :

• Level of suspicion for pulmonary involvement of COVID-19 is : LOW
• Summary : Features are typical for OTHER INFECTION and it is NOT compatible with COVID 19
• Examples includes Bronchitis, Infectious bronchiolitis, Broncho pneumonia, Lobar pneumonia, and Pulmonary abscess

 

🌗CO-RADS 3 :

• Level of suspicion for pulmonary involvement of COVID-19 is : EQUIVOCAL / UNSURE
• Summary :  Features compatible with COVID-19 but also with other diseases. 
  

• Findings include :

• equivocal findings for pulmonary involvement of COVID-19 on CT scan which is also found in other viral pneumonia or noninfectious causes.

 

🌒CO-RADS 4 :

• Level of suspicion for pulmonary involvement of COVID-19 is : HIGH
• Summary : Suspicious for COVID 19

• Findings include :
  

• Perihilar ground-glass opacity,
• Homogenous extensive ground-glass opacity
• Interlobular septal thickening with or without pleural effusion in the absence of other typical CT findings. 

 

🌑CO-RADS 5 :

• Level of suspicion for pulmonary involvement of COVID-19 is : VERY HIGH
• Summary : Typical for COVID 19

• Findings include : 
  

• Ground-glass opacities with or without consolidations
• Crazy paving pattern
• Reverse halo signs  
• Bands of ground glass opacities
  

 

🎇CO-RADS 6 :

• Level of suspicion for pulmonary involvement of COVID-19 is : PROVEN CASE OF COVID 19
• Summary : RT PCR Positive for SARS CoV2
  

• Patient is having positive RT-PCR test results for virus-specific nucleic acid detection test.
• we are doing this test for assessing Percentage of pulmonary involvement & for Prognostic purpose in these patients. 

 

 

 

CO-RADS CATEGORY	Level of suspicion for pulmonary involvement due to COVID-19	Summary
0	Not Interpretable	Technically insufficient for assigning a score.
1	Very Low	NORMAL or NON INFECTIOUS
2	Low	Typical for OTHER INFECTION and it is NOT compatible with COVID 19
3	Equivocal	Compatible with COVID-19 but also with other diseases.
4	High	Suspicious for COVID 19
5	Very High	Typical for COVID 19
6	PROVEN RT PCR +ve	RT PCR Positive for SARS CoV2