Evaluation of Sine Spin flat detector CT imaging compared with multidetector CT

Area of Science:

• Medical Imaging
• Radiology
• Neurological Imaging

Background:

• Flat detector computed tomography (FDCT) is utilized for periprocedural imaging in angiography.
• Sine Spin FDCT (SFDCT) employs a double oblique trajectory to minimize artifacts and enhance brain soft tissue imaging.
• This study compares the latest SFDCT generation with multidetector CT (MDCT) regarding dose, image quality, and diagnostic performance.

Purpose of the Study:

• To compare the effective dose, image quality, and diagnostic performance of Sine Spin FDCT (SFDCT) against multidetector CT (MDCT).
• To evaluate the diagnostic capabilities of SFDCT for detecting intracranial hemorrhage and early ischemic lesions.

Main Methods:

• Effective dose measurement using MOSFET detectors with the 7sDCT Sine Spin protocol on a biplane angiographic C-arm system.
• Diagnostic performance evaluation of SFDCT for anatomical details, hemorrhage, and ischemia detection, compared to MDCT.
• Calculation of inter- and intra-rater correlation, sensitivity, and specificity.

Main Results:

• SFDCT demonstrated equal diagnostic performance to MDCT in the supratentorial ventricular system.
• Image quality was inferior for SFDCT in grey-white matter differentiation and infratentorial structures.
• High sensitivity and specificity were observed for hemorrhage and early ischemic lesion detection with SFDCT; effective dose was 2 mSv.

Conclusions:

• SFDCT exhibits high diagnostic sensitivity and specificity for intracranial hemorrhage and early ischemic lesions.
• Limitations of SFDCT include delineation of grey-white matter and infratentorial structures.
• The 7sDCT Sine Spin protocol offers a lower effective dose compared to previous studies.