Radiomics-based Surrogate of Endoscopy (rEndosc) (CHESS1703)
Radiomics-based Surrogate of Endoscopy (rEndosc) (CHESS1703)
Esophageal varices (EVs) resulting from portal hypertension are a prevalent complication of
 cirrhosis with a high mortality when variceal hemorrhage (VH) occurs. Screening endoscopy for
 EVs is recommended for all patients with cirrhosis, and prophylactic treatments are proposed
 for preventing VH, which may be financially onerous. Therefore, noninvasive tools for
 diagnosing EVs and risk stratifying VH in cirrhotic patients are needed to decrease the
 number of unnecessary invasive endoscopic examinations of low-risk patients and avoid
 unneeded prophylactic treatment. This is a prospective, multi-center diagnostic trial
 conducted at 9 high-volume liver centers in China designed to determine the diagnostic
 performance of radiomics-based surrogate (rEndosc) (investigational technology) by CT imaging
 for noninvasive prediction of EVs and risk stratification of VH in patients with hepatitis B
 virus-related cirrhosis using endoscopic examinations as reference standard.
Esophageal varices (EVs) resulting from portal hypertension are a prevalent complication of
 cirrhosis with a high mortality when variceal hemorrhage (VH) occurs. Screening endoscopy for
 EVs is recommended for all patients with cirrhosis, and prophylactic treatments are proposed
 for preventing VH, which may be financially onerous. Therefore, noninvasive tools for
 diagnosing EVs and risk stratifying VH in cirrhotic patients are needed to decrease the
 number of unnecessary invasive endoscopic examinations of low-risk patients and avoid
 unneeded prophylactic treatment. This is a prospective, multi-center diagnostic trial
 conducted at 9 high-volume liver centers (Beijing YouAn Hospital, Capital Medical University;
 Nanfang Hospital, Southern Medical University; 302 Hospital of PLA; Shandong Provincial
 Hospital; Beijing Friendship Hospital, Capital Medical University; Chinese PLA General
 Hospital; Peking University People's Hospital; Xingtai People's Hospital) in China designed
 to determine the diagnostic performance of radiomics-based surrogate (rEndosc)
 (investigational technology) by CT imaging for noninvasive prediction of EVs and risk
 stratification of VH in patients with hepatitis B virus-related cirrhosis using endoscopic
 examinations as reference standard.
Inclusion Criteria:

 -  18-75 years;

 -  HBsAg positive;

 -  confirmed cirrhosis based on results of histologic examination of liver tissue or
 combined physical, laboratory, and radiologic findings, including a nodular surface, a
 coarse texture, and an enlarged caudate lobe of the liver on ultrasonography, CT, or
 MR imaging.

 Exclusion Criteria:

 -  active alcohol abuse (less than 6 months of alcohol abstinence); portal thrombosis;

 -  history of treatments for portal hypertension (drug therapy, such as β-blocker,
 vasopressin) within 2 weeks;

 -  prior surgeries (such as splenectomy, partial splenic embolization/devascularization,
 transjugular intrahepatic portosystemic shunt);

 -  prior endoscopic therapies (such as endoscopic variceal ligation);

 -  previous variceal hemorrhage;

 -  acute-on-chronic (sub-acute) liver failure;

 -  malignant tumor (such as hepatocellular carcinoma);

 -  cirrhotic portal hypertension with isolated gastric varices or ectopic varices;

 -  inability to adhere to study procedures (such as heart failure, renal failure);

 -  pregnancy or unknown pregnancy status;

 -  no informed consent.