Radiation exposure during CT-guided biopsies: recent CT machines provide markedly lower doses
Autor: | Michael Forsting, Jens M. Theysohn, Kai Nassenstein, Axel Wetter, Saravanabavaan Suntharalingam, Adrian Ringelstein, Nika Guberina |
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Rok vydání: | 2018 |
Předmět: |
Adult
Image-Guided Biopsy Male medicine.medical_specialty Adolescent Medizin Radiation Dosage Effective dose (radiation) 030218 nuclear medicine & medical imaging Ionizing radiation Young Adult 03 medical and health sciences 0302 clinical medicine Abdomen Multidetector Computed Tomography Humans Medicine Radiology Nuclear Medicine and imaging Aged Retrospective Studies Neuroradiology Aged 80 and over medicine.diagnostic_test Phantoms Imaging business.industry Radiation dose Ultrasound Extremities Interventional radiology General Medicine Middle Aged Radiation Exposure Thorax Spine Radiation exposure medicine.anatomical_structure Female Radiology business Monte Carlo Method 030217 neurology & neurosurgery |
Zdroj: | European Radiology. 28:3929-3935 |
ISSN: | 1432-1084 0938-7994 |
Popis: | To examine radiation dose levels of CT-guided interventional procedures of chest, abdomen, spine and extremities on different CT-scanner generations at a large multicentre institute. 1,219 CT-guided interventional biopsies of different organ regions ((A) abdomen (n=516), (B) chest (n=528), (C) spine (n=134) and (D) extremities (n=41)) on different CT-scanners ((I) SOMATOM-Definition-AS+, (II) Volume-Zoom, (III) Emotion6) were included from 2013–2016. Important CT-parameters and standard dose-descriptors were retrospectively examined. Additionally, effective dose and organ doses were calculated using Monte-Carlo simulation, following ICRP103. Overall, radiation doses for CT interventions are highly dependent on CT-scanner generation: the newer the CT scanner, the lower the radiation dose imparted to patients. Mean effective doses for each of four procedures on available scanners are: (A) (I) 9.3mSv versus (II) 13.9mSv (B) (I) 7.3mSv versus (III) 11.4mSv (C) (I) 6.3mSv versus (II) 7.4mSv (D) (I) 4.3mSv versus (II) 10.8mSv. Standard dose descriptors [standard deviation (SD); CT dose indexvol (CTDIvol); dose-length product (DLPbody); size-specific dose estimate (SSDE)] were also compared. Effective dose, organ doses and SSDE for various CT-guided interventional biopsies on different CT-scanner generations following recommendations of the ICRP103 are provided. New CT-scanner generations involve markedly lower radiation doses versus older devices. • Effective dose, organ dose and SSDE are provided for CT-guided interventional examinations. • These data allow identifying organs at risk of higher radiation dose. • Detailed knowledge of radiation dose may contribute to a better individual risk-stratification. • New CT-scanner generations involve markedly lower radiation doses compared to older devices. |
Databáze: | OpenAIRE |
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