Patient doses and dosimetric evaluations in interventional cardiology

Bor D., OLĞAR T., Toklu T., Caglan A., ÖNAL E., Padovani R.

PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, cilt.25, sa.1, ss.31-42, 2009 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.ejmp.2008.03.002
  • Dergi Adı: PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.31-42
  • Anahtar Kelimeler: Effective dose, Dose-area product, Entrance skin dose, Interventional cardiology, FLUOROSCOPICALLY GUIDED PROCEDURES, REAL-TIME MEASUREMENT, CORONARY-ANGIOGRAPHY, AREA PRODUCT, SKIN INJURIES, RADIATION-EXPOSURE, RADIOLOGY
  • Ankara Üniversitesi Adresli: Evet

Özet

Interventional cardiological examinations may be associated with excessive radiation exposures which may cause skin injuries and higher probabilities of stochastic effects. Dose-area product (DAP) and skin doses of 325 patients were measured using alternative dosimetric techniques for different cardiological examinations. Data were collected from five different systems with the involvement of 11 cardiologists. All these dosimetric information has been collected separately for each of 10 projections together with the exposure parameters of X-ray systems. Mean DAP values measured with a transparent ion chamber were 49.1 Gy cm(2), 66.8 Gy cm(2), 106.9 Gy cm(2) and 124.7 Gy cm(2), respectively, for coronary angiography (CA), percutaneous transluminal. coronary angioplasty (PTCA) or stent (PT-SI), coronary angiography and/or PTCA and/or stent (CA-PT-SI), and ablation examinations. Radiochromic films, thermoluminescent dosimeters (TLD) and point measurement of air kerma (AK) were carried out for skin dose assessments. Skin doses of 23 patients measured with radiochromic films were found to be between 2 Gy and 6 Gy. Although the complexity of the procedures was the major reason for these excessive doses, considerable contributions of high X-ray output of some fluoroscopy units were also noticed.