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Computerized Tomographic Colonography Compared With Standard Diagnostic Procedures in Detecting Colorectal Neoplasia (ACRIN 6656)

This study has been completed.
National Cancer Institute (NCI)
Information provided by (Responsible Party):
American College of Radiology Imaging Network Identifier:
First received: June 2, 2000
Last updated: February 1, 2013
Last verified: February 2013

RATIONALE: New diagnostic procedures such as computed tomographic colonography may provide a less invasive method of identifying patients who have colorectal neoplasia.

PURPOSE: Diagnostic study to compare the effectiveness of computerized tomographic colonography with that of standard diagnostic procedures in detecting colorectal neoplasia.

Condition Intervention
Colorectal Cancer Procedure: computed tomography Procedure: diagnostic colonoscopy

Study Type: Interventional
Study Design: Primary Purpose: Diagnostic
Official Title: Computerized Tomographic Colonography: Performance Evaluation in a Multicenter Setting

Further study details as provided by American College of Radiology Imaging Network:

Study Start Date: July 2000
Study Completion Date: January 2003
Primary Completion Date: October 2000 (Final data collection date for primary outcome measure)
Detailed Description:

OBJECTIVES: I. Compare retrospectively the accuracy of computerized tomographic colonography (CTC) vs pathology and colonoscopy in the detection of clinically important colorectal neoplasia, defined as at least one proven lesion with a diameter measuring at least 1 cm. II. Compare the physician image display preferences and interpretation time across three viewing platforms for CTC images.

OUTLINE: This is a retrospective, multicenter study. Radiologists evaluate each patient's optimal diagnostic computerized tomographic colonography (CTC) data. Patients' CTC findings are evaluated by a radiologist at a central facility using an imaging display software platform from General Electric, Vital Images, or the Mayo Clinic. CTC findings are compared with conventional colonoscopy findings and pathologic analysis. A comparison is made between physician image display preferences and interpretation time across three viewing platforms for CTC images.

PROJECTED ACCRUAL: A total of 90 patients will be accrued for this study.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

DISEASE CHARACTERISTICS: The following case material must be submitted for each patient: No colonic diseases except polyps, cancer, or diverticulosis Optimal diagnostic computerized tomographic colonography (CTC) data with computed tomography acquisition parameters that meet the following minimal standards: Slice thickness no greater than 5 mm Reconstruction interval no greater than 3 mm Pitch no greater than 2 Anatomic coverage of the entire colorectum Supine and prone data sets Complete colonoscopy performed within 30 days following CTC by a board certified gastroenterologist or a physician with at least 3 years of colonoscopic experience Pathology reports for all endoscopically or surgically removed colorectal lesions with the exception of polyps that are inadvertently dropped at the time of retrieval Photograph or videotape record of dropped lesion allowed as proof of its existence All studies are allowed including those with lesions less than 1 cm, lesions at least 1 cm, or no lesions Report documents size, site, stage, grade, and type of colorectal cancers; size, site, degree of dysplasia, and type of colorectal adenomas; and types of other lesions (e.g., inflammatory, vascular, ulcerative) Demographic data including patient's age, sex, ethnic background, symptoms, risk factors, and relevant clinical history

PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Not specified Life expectancy: Not specified Hematopoietic: Not specified Hepatic: Not specified Renal: Not specified

PRIOR CONCURRENT THERAPY: See Disease Characteristics

  Contacts and Locations
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Please refer to this study by its identifier: NCT00005809

United States, Alabama
University of Alabama Comprehensive Cancer Center
Birmingham, Alabama, United States, 35294
United States, California
Jonsson Comprehensive Cancer Center, UCLA
Los Angeles, California, United States, 90095-1781
Veterans Affairs Medical Center - San Francisco
San Francisco, California, United States, 94121
United States, Georgia
Emory University School of Medicine
Atlanta, Georgia, United States, 30322
United States, Massachusetts
Boston Medical Center
Boston, Massachusetts, United States, 02118
United States, Minnesota
Mayo Clinic Cancer Center
Rochester, Minnesota, United States, 55905
United States, Missouri
Mallinckrodt Institute of Radiology
Saint Louis, Missouri, United States, 63110
United States, New York
NYU School of Medicine's Kaplan Comprehensive Cancer Center
New York, New York, United States, 10016
United States, North Carolina
Duke Comprehensive Cancer Center
Durham, North Carolina, United States, 27710
Comprehensive Cancer Center of Wake Forest University Baptist Medical Center
Winston-Salem, North Carolina, United States, 27157-1082
United States, Pennsylvania
Milton S. Hershey Medical Center
Hershey, Pennsylvania, United States, 17033
Sponsors and Collaborators
American College of Radiology Imaging Network
National Cancer Institute (NCI)
Study Chair: C. Daniel Johnson, MD Mayo Clinic
  More Information

Responsible Party: American College of Radiology Imaging Network Identifier: NCT00005809     History of Changes
Other Study ID Numbers: CDR0000067802
CA80098 ( Other Grant/Funding Number: NCI CIP )
Study First Received: June 2, 2000
Last Updated: February 1, 2013

Keywords provided by American College of Radiology Imaging Network:
colon cancer
rectal cancer

Additional relevant MeSH terms:
Colorectal Neoplasms
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Digestive System Diseases
Gastrointestinal Diseases
Colonic Diseases
Intestinal Diseases
Rectal Diseases processed this record on September 21, 2017