Initial experience with computed tomographic colonography applied for noncolorectal cancerous conditions.

Purpose: The aim of this study was to asses retrospectively the performance of computed tomography colonography (CTC) for noncolorectal cancerous conditions.

Material And Methods: A total of 44 patients with non-colorectal cancerous conditions underwent CTC. We researched the indications for CTC or present illness and evaluated the CTC imaging findings.

Re-evaluation of body weight as an indicator for contrast material dosage for indirect CT venography.

Objective: We evaluated body weight as an accurate indicator for determining contrast load using nonionic monomeric contrast material in indirect CT venography.

Materials And Methods: One hundred and thirty-two patients (mean age 51 years) underwent indirect CT venography to exclude the possibility of DVT. We used 150 ml of isohexol (iodine, 300 mgI/ml) administered at a rate of 3.

Visualization of azygos arch valves using computed tomography: comparison of scanning delay times.

Objective: To evaluate the frequency and appearance of azygos arch valves after short and long scanning delays and high injection rates of contrast material (CM) using a 64-slice multi-detector-row computed tomography (MDCT).

Methods: We retrospectively reviewed the findings from 264 contrast-enhanced MDCT chest examinations. The rate of injection for 300 mg I/ml CM was 3.

[Performance evaluation for CT-AEC(CT automatic exposure control)systems].

Although many current CT scanners incorporate CT-AEC, performance evaluation is not standardized. This study evaluates the performance of the latest CT-AEC of each manufacturer with the aim of establishing a standard CT-AEC performance evaluation method. The design of the phantoms was based upon the operation characteristics of different CT-AECs.