Data From CT COLONOGRAPHY (ACRIN 6664)

The CT Colonography collection consists of a limited portion of The National CT Colonography Trial (ACRIN PROTOCOL 6664). The collection is offered to enlarge the broader research community's ability to develop CAD algorithms for polyp detection.
The National CT Colonography Trial (ACRIN 6664) collection contains 825 cases of CT colonography imaging with accompanying spreadsheets that provide polyp descriptions and their location within the colon segments. Additional information about the trial is available in the Study Protocol and Case Report Forms.

Main Objective: To clinically validate widespread use of computerized tomographic colonography (CTC) in a screening population for the detection of colorectal neoplasia.

Participants: Male and female outpatients, aged 50 years or older, scheduled for screening colonoscopy, who have not had a colonoscopy in the past five years.

Study Design Summary: The study addresses aspects of central importance to the clinical application of CTC in several interrelated but independent parts that will be conducted in parallel. In Part I, the clinical performance of the CTC examination will be prospectively compared in a blinded fashion to colonoscopy. In Part II, optimization of the CT technique will be performed in view of new technological advances in CT technology. In Part III, lesion detection will be optimized by studying the morphologic features of critical lesion types and in the development of a database for computer-assisted diagnosis. In Part IV, patient preferences and cost-effectiveness implications of observed performance outcomes will be evaluated using a predictive model.

本计算机断层扫描结肠造影（CT Colonography，CTC）数据集仅包含全国CT结肠造影试验（ACRIN方案6664）的部分数据，旨在助力广大科研群体开发用于息肉检测的计算机辅助诊断（Computer-Aided Diagnosis，CAD）算法。
全国CT结肠造影试验（ACRIN 6664）数据集共包含825例CT结肠造影影像数据，配套的电子表格记录了息肉的相关特征及其在结肠各节段的位置。该试验的更多详细信息可查阅研究方案与病例报告表。

主要研究目标：在筛查人群中临床验证CT结肠造影（CTC）在结直肠肿瘤检测中的大规模应用可行性。

研究对象：年龄≥50岁、计划接受筛查性结肠镜检查且近5年内未进行过结肠镜检查的男女门诊患者。

研究设计概述：本研究通过多个相互关联又彼此独立的并行模块，覆盖CT结肠造影临床应用的核心关键领域：
1. 第一部分：以盲法前瞻性对照的方式，对比CT结肠造影检查与结肠镜检查的临床性能表现；
2. 第二部分：结合CT技术的最新进展，优化CT扫描参数与流程；
3. 第三部分：通过分析关键病变类型的形态学特征，并构建计算机辅助诊断数据库，优化病变检测流程；
4. 第四部分：通过预测模型评估患者的检查偏好，以及基于现有性能结果的成本效益情况。

搜集汇总

背景与挑战

背景概述

该数据集来自国家CT结肠造影试验（ACRIN 6664）的一部分，包含825例CT结肠造影影像及相关息肉描述和位置信息，旨在扩大研究社区开发息肉检测CAD算法的能力，并支持临床验证CTC在结直肠肿瘤筛查中的应用。参与者为50岁及以上、计划进行筛查结肠镜检查的门诊患者，研究设计涵盖临床性能比较、技术优化和成本效益评估。