GATED SCAN CT APPARATUSOOHASHI AKINAMI
GATED CT WITH IRREGULAR SAMPLING FOR SLOW CT ACQUISITIONA physiological parameter monitor (44) monitors a cyclic physiological parameter and generates a cyclic parameter phase indicative signal. A radiation system (8) is disposed adjacent an examination region (18, 28) to generate transmission ...
CT imaging is performed after each irradiation and is compared with the CT scan images obtained at the time of treatment planning; alternatively, the diaphragm observed under fluoroscopy is used as a landmark for respiratory movement to perform accurate irradiation. Dawson et al. [35] reported ...
35 - Gated Cardiac CT is Useful for Assessment of Mechanical Aortic Valve Obstruction - EM|consultedoi:10.1016/j.hlc.2009.05.076J. HarkerCentre for Cardiovascular MRI, The Prince Charles Hospital, Brisbane, Australia;T. BogaCentre for Cardiovascular MRI, The Prince Charles Hospital, Brisbane, ...
Twenty-one patients underwent free-breathing respiratory-gated chest CT using a high-pitch scan mode no more than 6 months after inspiratory breath-held nongated CT, which serves as reference. Scan parameters were as follows: pitch = 3.4, 128 × 0.6 mm collimation, 0.28 s ...
This study was performed to evaluate tube current reduction in non-ECG-gated heart CT angiography in children by combined tube current modulation, and to assess the effects of body weight, age, sex, and scan direction on tube current reduction. Materials and methods From September 2004 to Januar...
Thin-section CT was performed in 35 patients by using standard techniques. Three additional sections were obtained in each patient with prospective ECG gating at corresponding levels of the paracardiac lung parenchyma. Non-ECG-gated and ECG-gated sections were then rated in blinded fashion by three...
Further in- vestigations will be necessary to assess the role of a respiratory-gated PET in addition to contrast-enhanced CT scan as the standard planning procedure. Conclusions In comparison to non-gated PET, 4D PET may better account for the respiratory movements of liver targets and more ...
The recent improvements in CT detector and gantry technology in combination with new heart rate adaptive cone beam reconstruction algorithms enable the visualization of the heart in three dimensions at high spatial resolution. However, the finite temporal resolution still impedes the artifact-free reconstr...
ECG-Gated Cardiac CT 下载积分: 1889 内容提示: AJ R:182, April 2004 993 oronary artery disease is the lead-ing cause of death in the UnitedStates and the leading cause ofpremature permanent disability [1]. The lateststatistics from the American Heart Associa-tion indicate that in 2003, ...