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Detection Rate clinical trials

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NCT ID: NCT05994898 Recruiting - Ultrasound Clinical Trials

Ultrahigh-frequency Ultrasonography (UHFUS) in Detection of Small Pulmonary Ground Glass Opacity (GGO)

UHFUSGGO
Start date: January 4, 2023
Phase:
Study type: Observational

The purpose of this study is to assess the feasibility of UHFUS on detection of GGOs in excised lung tissue and investigate UHFUS features of GGO in vitro. Each GGO was detected by palpation, UHFUS and open biopsy in sequence. The comparison of detection rate and time consumption were analyzed respectively. The Bland-Altman analysis was used to estimate the agreement of tumor size measured by CT, UHFUS and pathology.

NCT ID: NCT04602299 Completed - Clinical trials for Early Gastric Cancer

Setting the Shortest Examination Time of Gastroscopy to Improve the Detection Rate of Upper Gastrointestinal Tumors

Start date: November 1, 2020
Phase: N/A
Study type: Interventional

This multicenter, prospective, interventional study aims to include 2000 gastroscopic procedures and investigate the relationship between procedure time and lesion detection rate in tertiary endoscopic centers in China. At the first stage, the researchers observe the actual procedure time of gastroscopies without affecting the natural behavior of endoscopists. At the second stage, a minimal time limit will be set for each procedure based on the observational results of the first stage. The primary study outcome is focal lesion detection rate. Secondary outcomes include detection rate of early upper GI cancer, biopsy rate and adverse event rate.