CT Colonography

Radiologists' show consistent CT colonography performance

Radiologists' show consistent CT colonography performance

Screening performance on adenoma and advanced neoplasia detection is consistent among radiologists using metrics that included advanced neoplasia detection rate and per-polyp endoscopic confirmation rate.

Virtual colonoscopy usage was Medicare-appropriate

Before Medicare halted coverage for screening CT colonography in March 2009, the technique was indeed being used appropriately, a study has found.

Radiation can be reduced while maintaining high quality in CT colonoscopy


High-quality CT colonoscopy diagnostic images can be maintained while reducing the radiation dose, according to a new study.

Other tests may be effective for rescreening after initial colonoscopy is negative


A new modeling study has found that people who undergo colonoscopy at age 50 years in which no precancerous polyps are found can be rescreened at age 60 years with one of three alternative methods, rather than undergoing colonoscopy every 10 years.

Study suggests 10-year colonoscopy rescreen not needed after first negative result

It may be reasonable to use methods other than colonoscopy to rescreen people who had negative results on their first screening colonoscopy.

Laxative-free virtual colonoscopy can detect large polyps


CT colonography can accurately detect adenomas 10 mm or larger in patients who did not undergo laxative-induced bowel cleansing before the procedure.

Virtual colonoscopy is an accurate screen in seniors

Virtual colonoscopy is an accurate screen in seniors

CT colonography accurately detects cancer and precancerous polyps in persons aged 65 years and older.

CT colonography accurate for 10 mm adenomas

CT colonography accurate for 10 mm adenomas

Less accurate for smaller lesions; better patient scores for comfort, exam preparation.

CT colonography raises screening rates, but colonoscopy finds more advanced neoplasia

Offering CT colonography improved participation in colorectal cancer screening by more than 50% compared with colonoscopy, but colonoscopy identified significantly more advanced neoplasia.

More hospitals using virtual colonoscopy

Computed tomographic colonography (CTC) is gaining a foothold in US hospitals despite lack of Medicare coverage or national consensus on its role in colorectal cancer screening.

Patients willing to undergo CT colonography discouraged by costs


Costs of computed tomography colonography (CTC) discourage patients who have previously refused colorectal cancer screening, according to a study published in the American Journal of Roentgenology (2010 Aug;195(2):393-7).

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