1.Malignant trasformation of hepatic dysplastic nodule revealed by Tc (99m)Liver Spect.
Korean Journal of Medicine 1999;56(6):777-777
No abstract available.
Tomography, Emission-Computed, Single-Photon*
2.Cerebral Postischemic Hyperperfusion in PET and SPECT.
Korean Journal of Nuclear Medicine 2001;35(6):343-351
No abstract available.
Tomography, Emission-Computed, Single-Photon*
3.Combined 201T1 and 99mTc-PYP myocardial SPECT in acute myocardialinfarction.
Hee Seung BOM ; Ji Yeul KIM ; Jeong Gwan CHO ; Jong Chun PARK ; Jung Chaee KANG
Korean Journal of Nuclear Medicine 1991;25(2):294-295
No abstract available.
Tomography, Emission-Computed, Single-Photon*
4.Assessment of Gastric Accommodation by SPECT.
Journal of Neurogastroenterology and Motility 2010;16(4):347-349
No abstract available.
Tomography, Emission-Computed, Single-Photon
5.Myocardial SPECT.
Korean Circulation Journal 2001;31(4):385-391
No abstract available.
Tomography, Emission-Computed, Single-Photon*
6.Reproducibility of non-invasive measurement for left ventricular contractility using gated myocardial SPECT.
Kyeong Min KIM ; Dong Soo LEE ; Yu Kyeong KIM ; Gi Jeong CHEON ; Seok Ki KIM ; June Key CHUNG ; Myung Chul LEE
Korean Journal of Nuclear Medicine 2001;35(3):152-160
No abstract available.
Tomography, Emission-Computed, Single-Photon*
7.Early stress echocardiogram and 99Tc-MIBI heart spect findings after coronary atrery revascularization.
Deug Young NA ; Deog Yoon KIM ; Heung Sun KANG ; Chung Whee CHOUE ; Kwon Sam KIM ; Ju Chel PARK ; Myung Shick KIM ; Jung Song SONG ; Jong Hoa BAE
Journal of the Korean Society of Echocardiography 1993;1(2):185-194
No abstract available.
Heart*
;
Tomography, Emission-Computed, Single-Photon*
8.Clinical significance of brain SPECT in zipeprol abusers.
Dai Ok CHO ; Jae Phil KIM ; Deog Yoon KIM ; Hyung In YANG ; Eun Mi KOH ; Kwang Mi KIM ; Young Kil CHOI
Korean Journal of Nuclear Medicine 1993;27(1):22-27
No abstract available.
Brain*
;
Tomography, Emission-Computed, Single-Photon*
10.Improved Activity Estimation using Combined Scatter and Attenuation Correction in SPECT.
Jeong Rim LEE ; Chang Woon CHOI ; Sang Moo LIM ; Seong Wun HONG
Korean Journal of Nuclear Medicine 1998;32(4):382-390
PURPOSE: The pvrpose of this study was to evaluate the accuracy of radioactivity quantitation in Tc-99m SPECT by using combined scatter and attenuation correction. MATERIALS AND METHODS: A cylindrical phantom which simulates tumors (T) and normal tissue (B) was filled with varying activity ratios of Tc-99m. We acquired emission scans of the phantom using a three-headed SPECT system (Trionix, Inc.) witb two energy windows (photopeak window: 126 154 keV and scatter window: 101 123 keV). We performed the scatter correction with dual-energy window subtraction method (k=0.4) and Chang attenuation correction. Three sets of SPECT images were reconstructed using combined scatter and attenuation correction (SC+AC', attenuation correction (AC) and without any correction (NONE). We compared T/B ratio, irnage contrast [(T-B)/(T+B)) and absolute radioactivity with true values. RESULTS: SC+AC images had the highest mean values of T/B ratios. Image contrast was 0.92 in SC+AC, which was close to the true value of 1, and higher than AC (0.77) or NONE (0.80). Errors of true activity by SPECT images ranged from 1 to 11% for SC+AC, 22-47% for AC, and 2 16% for NONE in a phantom which was located 2.4cm from the phantom surface. In a phantom located 10,0cm from the surface, SC+AC underestimated by ?4%, NON.E 40%. However, AC overestimated by 10%. CONCLUSION: We conclude that accurate SPECT activity quantitation of Tc-99m distribution can be achieved by dual window scatter correc.tion combined with attenuation correction.
Radioactivity
;
Tomography, Emission-Computed, Single-Photon*
Result Analysis
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