How does the concentration of iodine in enhancing lesions relate to image quality in head CT?

2004 ◽  
Author(s):  
Aaron M. Fischman ◽  
Robert G. Dixon ◽  
Walter Huda ◽  
Kent M. Ogden ◽  
Kristin A. Lieberman ◽  
...  
Keyword(s):  
Image Quality ◽  
Head Ct

THE IMPACT OF HEAD POSITIONING ON THE IMAGE QUALITY OF MULTI-DETECTOR COMPUTED TOMOGRAPHY

2021 ◽  
pp. 2150050
Author(s):  
Yang-Ting Hsu ◽  
Jo-Chi Jao
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Control Group ◽  
Ct Scanner ◽  
Head Ct ◽  
Radiologic Technologists ◽  
Head Positioning ◽  
The Impact ◽  
Multi Detector Computed Tomography

Radiologic technologists face various types of patients during multi-detector computed tomography (CT) examinations. In emergency departments, it is common to have patients who cannot follow instructions for the examinations. The asymmetric axial view of the head CT might affect the correctness of the clinician’s diagnosis. This study aimed to assess the impact of head positioning on the image quality of head CT using two phantoms. All scans were performed on a 16-slice CT scanner. In the control group, the tilted angle of the phantoms was 0[Formula: see text], and no multiplanar reconstruction (MPR) was performed. In the experimental groups, the tilted angles of the phantoms were 5[Formula: see text], 10[Formula: see text] and 15[Formula: see text], respectively, and MPR was performed afterwards. The results showed that if the head was tilted during the head CT examinations, image asymmetry and artifacts appeared without MPR. After MPR, one phantom showed that there were significant differences and the other phantom showed no significant differences quantitatively in image symmetry and artifacts between experimental groups and the control group, while both phantoms showed no significant differences qualitatively in image symmetry and artifacts between experimental groups and the control group. Although MPR can correct the image asymmetry and artifacts caused by tilted head positioning to some extent, it consumes time. Therefore, technologists should position the head as exactly as possible when performing head CT examinations.

Virtual Monochromatic Reconstruction of Dual-Energy Unenhanced Head CT at 65–75 keV Maximizes Image Quality Compared with Conventional Polychromatic CT

Radiology ◽  
2013 ◽  
Vol 266 (1) ◽  
pp. 318-325 ◽  
Author(s):  
Stuart R. Pomerantz ◽  
Shervin Kamalian ◽  
Da Zhang ◽  
Rajiv Gupta ◽  
Otto Rapalino ◽  
...  
Keyword(s):  
Image Quality ◽  
Dual Energy ◽  
Head Ct

scholarly journals Limited Evaluation of Image Quality Produced by a Portable Head CT Scanner (CereTom) in a Neurosurgery Centre

2017 ◽  
Vol 24 (1) ◽  
pp. 104-112 ◽  
Author(s):  
Ariz Chong Abdullah ◽  
◽  
Johari Siregar Adnan ◽  
Noor Azman A. Rahman ◽  
Ravikant Palur ◽  
...  
Keyword(s):  
Image Quality ◽  
Ct Scanner ◽  
Head Ct

SU-F-I-46: Optimizing Dose Reduction in Adult Head CT Protocols While Maintaining Image Quality in Postmortem Head Scans

2016 ◽  
Vol 43 (6Part8) ◽  
pp. 3397-3397
Author(s):  
I Lipnharski ◽  
C Carranza ◽  
N Quails ◽  
N Correa ◽  
D Rajderkar ◽  
...  
Keyword(s):  
Image Quality ◽  
Dose Reduction ◽  
Head Ct ◽  
Adult Head

Stationary head CT with linear CNT x-ray source arrays: image quality assessment through simulation

2021 ◽  
Author(s):  
Yueting Luo ◽  
Derrek Spronk ◽  
Christina R. Inscoe ◽  
Yueh Z. Lee ◽  
Otto Zhou ◽  
...  
Keyword(s):  
Image Quality ◽  
Quality Assessment ◽  
Image Quality Assessment ◽  
Head Ct ◽  
X Ray

scholarly journals Effects of Differences in Head Holder on Image Quality and Radiation Dose in Head CT

2014 ◽  
Vol 70 (10) ◽  
pp. 1166-1172
Author(s):  
Kazushi Yokomachi ◽  
Eiji Nishimaru ◽  
Chikako Fujioka ◽  
Masao Kiguchi ◽  
Minoru Ishifuro ◽  
...  
Keyword(s):  
Image Quality ◽  
Radiation Dose ◽  
Head Ct ◽  
Head Holder
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