Clinical Usefulness of <sup>99m</sup>Tc-DMSA Renal SPECT Using High Sensitivity-All Purpose Collimator for Pediatric Patients
نویسندگان
چکیده
منابع مشابه
Performance of a novel collimator for high-sensitivity brain SPECT.
We assessed improvements in performance in detection and estimation tasks due to a novel brain single photon computed tomography collimator. Data were acquired on the CeraSPECT scanner using both new and standard collimators. The new variable focusing collimator SensOgrade samples the projections unequally, with central regions more heavily represented, to compensate for attenuation of counts f...
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UNLABELLED Attenuation of photons degrades both the accuracy and the precision of SPECT images; attenuation correction algorithms correct the bias but cannot improve precision. Increased noise due to photon attenuation is most pronounced in regions deep in solid body sections, such as the brain and abdomen. We have quantified the degradation in performance in several estimation tasks that can b...
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Received 10/15/2007; revised 10/29/2007; accepted 10/30/2007. For correspondence and reprints contact: Jia-Huei Lin, M.D., Department of Nuclear Medicine, Kuang Tien General Hospital. 117 Sha-Tien Road, Sha-Lu, Taichung 43303, Taiwan, ROC. Tel: (886)4-26625111 ext. 2056, Fax: (886)426629167, E-mail: [email protected] Background: Patients with spinal cord injury (SCI) are at increased ri...
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UNLABELLED Renal length measurements are used in evaluating several abnormalities of the pediatric genitourinary tract. This study assesses reproducibility of renal length measurements obtained with 99mTc-dimercaptosuccinic acid (DMSA) SPECT. METHODS The lengths of 98 kidneys of 51 children (age range, 1-16 y; mean age, 5.4 y) who underwent 99mTc-DMSA SPECT were measured independently by 2 ob...
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UNLABELLED In SPECT using high-energy photon-emitting isotopes, such as (131)I, parallel-hole collimators with thick septa are required to limit septal penetration, at the cost of sensitivity and resolution. This study investigated a parallel-hole collimator with cone-shaped holes, which was designed to limit collimator penetration while preserving resolution and sensitivity. The objective was ...
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ژورنال
عنوان ژورنال: The Journal of the Korea Contents Association
سال: 2016
ISSN: 1598-4877
DOI: 10.5392/jkca.2016.16.03.219