Analisis Optimasi Citra Radiografi Pada Pemeriksaan Thorax Sistem Computed Radiography (CR) Terhadap Entrance Surface Dose (ESD)
DOI:
https://doi.org/10.47313/jig.v17i1.533Keywords:
Variasi faktor eksposi, Dosis permukaan, Computed Radiography (CR)Abstract
Telah dilakukan penelitian analisis variasi faktor eksposi pemeriksaan thorax terhadap dosis permukaan dan noise pada citra radiografi. Dilakukan 10 (sepuluh) kali ekspos pada phantom thorax dengan faktorĀ eksposi 50 kV- 8 mAs, 50 kV-10 mAs, 55 kV- 8 mAs, 55 kV-10 mAs, 55 kV-10 mAs, 60 kV- 8 mAs, 60 kV-10 mAs, 66 kV-8 mAs, 66 kV-10 mAs dan 102 kV- 1 mAs, 102 kV - 2,5 mAs untuk teknik kV tinggi. Untuk masing-masing faktor eksposi ditempelkan satu TLD yang diletakkan di tengah lapangan penyinaran untuk mengukur nilai dosis permukaan. Kondisi eksposi optimum pemeriksaan thorax PA (dinyatakan dengan nilai lgM ) terjadi ketika penggunaan faktor eksposi 55 kV dengan 8 mAs karena nilai lgM yang didapat yaitu 1,91 , nilai standar deviasi 6,605 dan nilai ESD sebesar 0,098 mGy.References
IAEA. (2007).Technical Report Series No. 457 Dosimetry in Diagnostic Radiology: an International Code of Practic. Austria:IAEA Vienna.
Akhadi, M. (2000). Dasar-Dasar Proteksi Radiasi Edisi I. Jakarta: Rineka Cipta.
Ballinger.W.Philip, Eugene.D.Frank. (2003). Merrills Atlas of Radiographic Positions Volume 2 10th Edition. Mosby.
American Association of Physicists in Medicine. (2009) . Report No.116, Task Group 116: An Exposure Idicator For Digital Radiography. USA : One Physics, College Park, MD.
Bushberg JT, Seibert JA, Leidholdt EM, Boone JM. The Essential Physics of Medical Imaging. 2nd ed. Philadelphia, Pa: Lippincott Williams & Wilkins, 2002.
Bushong, S. C. (2000). Radiologic science for technologist. St. Louis: CV. Mosby Company.
Seeram, Euclid, Brennan, Patrick, C. Diagnostic reference levels in radiology. Radiologic Technology. May-June, 2006.
ImageJ User Guide http://rsb.info.nih.gov/ij/
Philips Bucky Diagnost X-Ray Unit .2014.
www.terraaster.ro/nou/images/stories/philips_bucky_diagnost.jpg diakses pada tanggal 05 Juni 2014 pukul 06.06 WIB
Datasheet CR 35 X Digitizer. 2009. Agfa Healthcare NV. Belgium. www.agfahealthcare.com
Datasheet CR MD 4.0 General Cassette. 2009. Agfa Healthcare NV. Belgium. www.agfahealthcare.com
TLD Reader.2014.
www.thermoscientific.com/en/product/harshaw-tld-model-3500-manual-readers1.htm diakses pada tanggal 09 Juli 2014 pukul 19.43 WIB
Ridwan, M. (2003). Keputusan Kepala BAPETEN No.01-P/Ka-BAPETEN/I- 03 Tentang Pedoman Dosis Pasien Radiodiagnostik. Jakarta: Bapeten.
Downloads
Published
Issue
Section
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).