Spatial Recognition: A Temporal Tale of Multiple Window Spatial Registration.
Indian J Nucl Med
; 38(2): 134-139, 2023.
Article
in En
| MEDLINE
| ID: mdl-37456190
ABSTRACT
Purpose:
The performance ability of position logic circuitry of gamma-camera to superimpose the X-Y gains obtained from different pulse height analyzers is multiple window spatial registration (MWSR). This study was conducted to evaluate the feasibility of dual-tracer method using 99mTc and 131I to assess MWSR. Materials andMethods:
The procedure was carried out on a dual-head gamma-camera with rectangular NaI (Tl) crystal using a point source containing 99mTc pertechnetate and 131I-NaI. Pixel coordinates, full width at half-maximum of point spread function at 364 keV and 140 keV, and pixels with maximum count of images for dual detectors were analyzed and compared.Results:
The experiment demonstrated an excellent correlation between the X and Y coordinates identified on 364 keV and 140 keV images (Spearman's coefficient of rank correlation 0.9, P < 0.0001). Intraclass correlation of studies performed on two separate occasions showed a good correlation (k = 0.87) demonstrating the reproducibility of the procedure.Conclusion:
Dual-tracer method for evaluation of MWSR is a reproducible, accurate, and logical alternative to the routine National Electrical Manufacturers Association procedure.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Indian J Nucl Med
Year:
2023
Document type:
Article
Affiliation country:
India
Publication country:
IN
/
INDIA
/
ÍNDIA