Korean J Med Phys.
2007 Sep;18(3):139-143.
Dose Measurements using Phantoms for Tube Voltage, Tube Current, Slice Thickness in MDCT
- Affiliations
-
- 1Department of Radiological Science, College of Health Science and Research Institute of Health Science, Yonsei University. hjk1@yonsei.ac.kr
- 2Department of Radiology, Wonju Christian Hospital.
Abstract
- The purpose of this study was to measure and evaluate radiation dose for MDCT parameters. Patient dose for various combination of MDCT parameters were experimentally measured, using MDCT (GE light speed plus 4 slice, USA), model 2026C electrometer (RADICAL 2026C, USA), standard Polymethylmethacrylate (PMMA) head and body CT dosimetry phantoms. In clinical situations, for a typical abdominal scan performed with MDCT at 120 kVp, 180 mAs, 20 mm collimation, and a pitch of 0.75, CTDIw, CTDIvol were measured as 20.2 mGy, 26.9 mGy, respectively. When scan length is assumed as 271.3 mm, DLP and measured effective dose of the abdominal would be calculated as 729.1 mGy cm, 10.9 mSv, respectively.
Keyword
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- A Study on Dose Response of MAGAT (Methacrylic Acid, Gelatin Gel and THPC) Polymer Gel Dosimeter Using X-ray CT Scanner
- A Comparative Study of Image Quality and Radiation Dose with Changes in Tube Voltage and Current for a Digital Chest Radiography
- Reducing of Craniofacial Radiation Dose Using Automatic Exposure Control Technique in the 64 Multi-Detector Computed Tomography
- Evaluation of the effective dose and image quality of low-dose multi-detector CT for orthodontic treatment planning
- Study on Generator Control for a Small X-Ray Tube
