The Rationale of CT Data-based Simulation in Prosthetic Intervention with Dental Implants

2012 ◽  
Vol 4 ◽  
pp. 140-147
Author(s):  
Ryuji Hosokawa
Keyword(s):  
Dental Implants ◽  
Ct Data

Cost-effectiveness of dental implants: a utility analysis

1990 ◽  
Vol 54 (11) ◽  
pp. 688-689 ◽  
Author(s):  
J Jacobson ◽  
B Maxson ◽  
K Mays ◽  
J Peebles ◽  
C Kowalski
Keyword(s):  
Cost Effectiveness ◽  
Dental Implants ◽  
Utility Analysis

Validation of spiral computed tomography for dental implants

1998 ◽  
Vol 27 (6) ◽  
pp. 329-333 ◽  
Author(s):  
M G P Cavalcanti ◽  
J Yang ◽  
A Ruprecht ◽  
M W Vannier
Keyword(s):  
Computed Tomography ◽  
Dental Implants ◽  
Spiral Computed Tomography ◽  
Spiral Computed

Blinded re-analysis of CT-data with HeartNavigator®: Improved TAVI planning versus TEE and CT alone

2013 ◽  
Vol 61 (S 01) ◽  
Author(s):  
C Schmidtke ◽  
D Richardt ◽  
M Strauch ◽  
J Barkhausen ◽  
HH Sievers ◽  
...  
Keyword(s):  
Ct Data

Effect of CT-based attenuation correction on uptake ratios in skeletal SPECT

2007 ◽  
Vol 46 (01) ◽  
pp. 38-42 ◽  
Author(s):  
V. Schulz ◽  
I. Nickel ◽  
A. Nömayr ◽  
A. H. Vija ◽  
C. Hocke ◽  
...  
Keyword(s):  
Vertebral Body ◽  
Facet Joint ◽  
One Dimension ◽  
Patient Specific ◽  
Data Sets ◽  
Facet Joints ◽  
Lumbar Vertebral Body ◽  
Ct System ◽  
Ct Data ◽  
Attenuation Corrected

SummaryThe aim of this study was to determine the clinical relevance of compensating SPECT data for patient specific attenuation by the use of CT data simultaneously acquired with SPECT/CT when analyzing the skeletal uptake of polyphosphonates (DPD). Furthermore, the influence of misregistration between SPECT and CT data on uptake ratios was investigated. Methods: Thirty-six data sets from bone SPECTs performed on a hybrid SPECT/CT system were retrospectively analyzed. Using regions of interest (ROIs), raw counts were determined in the fifth lumbar vertebral body, its facet joints, both anterior iliacal spinae, and of the whole transversal slice. ROI measurements were performed in uncorrected (NAC) and attenuation-corrected (AC) images. Furthermore, the ROI measurements were also performed in AC scans in which SPECT and CT images had been misaligned by 1 cm in one dimension beforehand (ACX, ACY, ACZ). Results: After AC, DPD uptake ratios differed significantly from the NAC values in all regions studied ranging from 32% for the left facet joint to 39% for the vertebral body. AC using misaligned pairs of patient data sets led to a significant change of whole-slice uptake ratios whose differences ranged from 3,5 to 25%. For ACX, the average left-to-right ratio of the facet joints was by 8% and for the superior iliacal spines by 31% lower than the values determined for the matched images (p <0.05). Conclusions: AC significantly affects DPD uptake ratios. Furthermore, misalignment between SPECT and CT may introduce significant errors in quantification, potentially also affecting leftto- right ratios. Therefore, at clinical evaluation of attenuation- corrected scans special attention should be given to possible misalignments between SPECT and CT.

Preoperative assessment of treatment planning on minimization of micro-movement during healing period of immediate-loaded implants using X-ray CT data-based simulation

2010 ◽  
pp. 110220121911010
Author(s):  
KATSUHIKO KIMURA ◽  
Yasumasa Fukase ◽  
Michiko Makino ◽  
Chihiro Masaki ◽  
Tetsuji Nakamoto ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Preoperative Assessment ◽  
X Ray ◽  
Healing Period ◽  
Ct Data
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