early gastric cancer
Conditions
Interventions
None listed
Sponsors
Kawahara Yoshiro
Ryobi Systems co., ltd.
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Individuals who are 20 years of age or older at the time of endoscopic image acquisition. 2. Individuals who can provide early gastric cancer tissue suitable for pathological diagnosis by a pathological evaluator. 3. Individuals who can provide images that meet the following criteria for endoscopic images: Images captured using White Light mode Vertical resolution of 700 pixels or more and horizontal resolution of 800 pixels or more (image area) Images captured using an Olympus or Fujifilm endoscope Five or more images per lesion Suitable for deep depth diagnosis, as shown below The entire gastric tumor is generally visible (without using close-up or magnifying endoscopy, etc.) The details of the tumor's shape can be observed (without moving the lens too far from the tumor) Sufficient insufflation is performed.
Exclusion criteria
Exclusion criteria: 1. The following images are excluded Images that do not show the gastric tumor (such as normal areas) Images taken after treatment such as biopsy or clipping, or images with severe bleeding Images that show foreign objects such as food residue Blurred or unclear images due to poor focus or other factors Images that only show a portion of the lesion due to magnifying endoscopy or close-up photography 2. Individuals who have undergone gastric resection or gastric tube reconstruction at the time of endoscopic image acquisition or specimen collection. 3. Individuals with lesions extending to the esophagus or duodenum at the time of endoscopic image acquisition or specimen collection. 4. Individuals with a history of chemotherapy or radiation therapy to the upper abdomen within the year prior to the target endoscopic examination. 5. Patients who have refused to participate in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Sensitivity of mucosal gastric cancer (M cancer) diagnosed by this program. | — |
Secondary
| Measure | Time frame |
|---|---|
| 1) Specificity of mucosal gastric cancer (M cancer) diagnosed by this program. 2) Diagnostic accuracy rate of mucosal gastric cancer (M cancer) diagnosed by this program. | — |
Contacts
Public ContactShoichiro Hirata
Okayama University Hospital
Outcome results
None listed