|
KMID : 1131320140160020057
|
|
Journal of Korean Society of Computed Tomographic Technology
2014 Volume.16 No. 2 p.57 ~ p.67
|
|
|
To compare diagnostic Accuracy and dose reduction with Brain CT Angiography Subtraction and Automatic Bone Remove Techniques in Cerebral aneurysmal Patients
|
|
Kim Hyun-Young
Lee Jong-Min
Park Guan-Jung
Bae Gyung-Deok
Dae Chang-Min
Min Kwan-Hong
|
|
|
Abstract
|
|
|
Purpose : The study was to compare image quality and dose reduction with Brain CT Angiography subtraction and Automatic Bone Remove techniques in Cerebral aneurysmal patients.
Materials and Methods : Cerebral aneurysmal patients 60 people are included who underwent TFCA and Brain CT Angiography since January 1st, 2012 to January 1st, 2013. Three 64-slice MDCT and one 256-slice MDCT are used. Diagnosis of aneurysm, size measurement and aneurysm morphology are evaluated. Dose report and Conversion Factor 0.0021 from ICRP 102 are used for dose evaluation.
Results : In Aneurysm diagnosis section, sensitivity 97.8% and specificity 100% were measured by comparing between TFCA and Brain CT Angiography subtraction. Also, Sensitivity 96.8% and specificity 100% was measured with Automatic Bone Remove technique. Brain CT Angiography subtraction’s aneurysm size measurement score was Excellent 71.6%, Good 25.0%, Normal 3.4%, Bad 0%. In Automatic Bone Remove, score was Excellent 70.5%, Good 26.7%, Normal 2.8%, Bad 0%. In Aneurysm morphology section, Subtraction represent Saccular 93.3%, Fusiform 5.0%, Dissecting 1.7% and Automatic Bone Remove represent Saccular 90.0%, Fusiform 8.3%, Dissecting 1.7%. For Automatic Bone Remove, 50% lower dose were used than Brain CT Angiography.
Conclusions : For Cerebral aneurysmal Brain CT Angiography, Automatic Bone Remove technique is not only reduce exposure dose but also maintain diagnostic quality of Images.
|
|
|
KEYWORD
|
|
|
Cerebral Aneurysm, Brain CT Angiography, Subtraction Technique, Automatic Bone Remove Technique, Dose reduction
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|