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C-2229 - Dose reduction strategy using 80-row non-helical scanning method for computed tomography of the head: A cerebral hemorrhage

F. Masaaki, H. Onishi, H. Yamamoto; Kurashiki/JP Type: Scientific Exhibit
Area of Interest: Head and neck
Imaging Technique: CT
Procedure: Technical aspects
Special Focus: Hemorrhage
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Aims and objectives: Non-enhaced head X-ray computed tomography (CT) has been used for diagnosis and evaluation of cerebrovascular diseases (such as cerebral infarction, intracerebral hemorrhage, subarachnoid hemorrhage, epidural hematoma, and subdural hematoma) [1-2]. Hypertensive intracerebral hemorrhage is the most c[...]

Methods and materials: This study was approved by Kurashiki central hospital institutional review board. Ten patients (mean age, 62 years; range 48 to 82 years; 6 males and 4 females) were assessed using HS and NHS method within 24 hours. All patients were performed on the same 80-row multi detector CT scanner (Aquilion P[...]

Results: Results: The SDs in Skull base were 4.3 ± 0.5 (NHS) and 4.0 ± 0.3 (HS) (p = 0.218). The SDs in Basal Ganglia were 3.7 ± 0.5 (NHS) and 3.5 ± 0.3 (HS) (p = 0.334). The SDs in Parietal were 3.3 ± 0.5 (NHS) and 3.3 ± 0.2 (HS) (p = 0.904) (Fig.3). The CNRs were 1.9 ± 0.3 (NHS) and 2.1 ± 0.5 (HS) (p = 0.4[...]

Conclusion: NHS can decrease the radiation dose while maintaining SD and CNR when assessing cerebral hemorrhage using head CT.

Personal information: Masaaki Fukunaga, Radiological Technologist Department of Radiological Technology Kurashiki Central Hospital mf12895@kchnet.or.jp

References: Korn A, Fenchel M, Bender B, et al. Iterative reconstruction in head CT: image quality of routine and low-dose protocols in comparison with standard filtered back-projection. AJNR 2012; 33:218-24.  Corcuera-Solano I, Doshi AH, Noor A, et al. Repeated head CT in the neurosurgical intensive care [...]

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