76 research outputs found
Differences in Academic Performance by Grade Span Configuration for Students in Poverty
In this investigation the degree to which passing rates on the STAAR Reading and Mathematics assessments of Grade 5 and 6 students in poverty in the state of Texas differed as a function of grade span configuration was examined Data were obtained from the Texas Education Agency for all Grade 5 and 6 students in poverty who were enrolled in single double grade level i e Grades 4-5 5 only or Grades 5-6 or in multi-grade level i e PreK-6 grade span configurations for the 2012-2013 through the 2014-2015 school years Inferential analyses revealed the presence of statistically significant differences in reading and mathematics passing rates between the two grade span configurations Grade 5 and Grade 6 students in poverty had statistically significantly higher reading and mathematics passing rates in multi-grade level schools than in single double grade level schools Implications for policy and practice are provide
Low-dose CT protocol for orthodontic diagnosis.
AIM: This was to correlate the dosimetric evaluation with high diagnostic
accuracy by suggesting a protocol that significantly reduces the dose
administered by a Dentascan exam without affecting diagnostic accuracy.
MATERIALS AND METHODS: 17 patients were selected consecutively (7 males and 10
females) of a mean age of 11.2 (8-14 years) who sought orthodontic treatment.
They needed CT control before and after treatment with RME to evaluate impacted
canines. The study was performed using a multidetector 16-rows CT with two
protocols that provided 2 different KV acquisition parameters: 80 KV or 120 KV.
Radiation dose was evaluated in two ways: CTDI and DLP. Image quality was rated
and the results were compared to identify significant differences in terms of
image quality, radiation exposure and presence of artefacts.
RESULTS: The 80 KV scanning has a significantly lower effective radiation dose
compared to the 120 KV scanning (p <0.05). The images of all patients were used
for comparing the protocols in terms of image quality. The mean scores for the 80
KV scanning images were 4.18 +/-0.81 and 4.41 +/-0.80 for dose obtained by 120 KV
scanning. The median image quality was 4 (good) for both protocols. The 80 KV
protocol allowed, as well as the 120 KV, a careful analysis by the orthodontist
and the dental surgeon that together, based on this images, can choose the best
line of treatment between several available options.
CONCLUSION: 80 KV protocols compared with 120 KV protocols resulted in reduced
total radiation dose without relevant loss of diagnostic image information and
quality. The images were good enough to obtain information about the exact
position of impacted teeth and to plan the best line of surgical treatment and
mechanotherapy strategy
European society of urogenital radiology (ESUR) guidelines: MR imaging of pelvic endometriosis
Zinner syndrome diagnosed by magnetic resonance imaging and computed tomography: role of imaging to identify and evaluate the uncommon variation in development of the male genital tract
Seminal vesicle cysts are a very rare condition and its often associated with ipsilateral renal agenesis. The diagnosis of seminal vesicle cysts may be delayed or missed because of the non-specific symptoms of this condition. This article reports a triad of right renal agenesis, ipsilateral seminal vesicle cyst, and ejaculatory duct obstruction (Zinner syndrome) in a 56 years old man
Diagnostic evaluation of a case of lingual thyroid ectopia
Thyroid ectopia can occur when the process of thyroid embryogenesis fails. Here, we present the case of a 30-year-old woman with thyroid ectopia that was discovered during magnetic resonance imaging of cervical spine for referred neck pain. Imaging revealed the presence of an encapsulated mass at the base of her tongue. The patient was not symptomatic for any compression of the airways. Diagnosis of ectopic lingual thyroid was confirmed by (99m)TC scintigraphy. Incidental diagnosis of thyroid ectopia in asymptomatic adult patients is rare, and it should be considered on diagnostic imaging in case of an anterior midline cervical mass
Recurrent Ruptured Hemorrhagic Corpus Luteal Cyst in a Known Case of Combined Deficiency of Factor V and VIII
Securing cyber-physical systems: An optimization framework based on OSSTMM and genetic algorithms
This paper presents an optimization framework, based on Genetic Algorithms, for the control of the 'security level' of a Cyber-Physical System (CPS). The security level is a quantity that has been studied in several industrial standards, among which we selected the Open Source Security Testing Methodology Manual (OSSTMM). The proposed optimization solution is validated on scenarios representative of real operations of a security evaluator, and numerical simulations report the performances obtained by the algorithm
Low-dose CT protocol for orthodontic diagnosis.
AIM: This was to correlate the dosimetric evaluation with high diagnostic
accuracy by suggesting a protocol that significantly reduces the dose
administered by a Dentascan exam without affecting diagnostic accuracy.
MATERIALS AND METHODS: 17 patients were selected consecutively (7 males and 10
females) of a mean age of 11.2 (8-14 years) who sought orthodontic treatment.
They needed CT control before and after treatment with RME to evaluate impacted
canines. The study was performed using a multidetector 16-rows CT with two
protocols that provided 2 different KV acquisition parameters: 80 KV or 120 KV.
Radiation dose was evaluated in two ways: CTDI and DLP. Image quality was rated
and the results were compared to identify significant differences in terms of
image quality, radiation exposure and presence of artefacts.
RESULTS: The 80 KV scanning has a significantly lower effective radiation dose
compared to the 120 KV scanning (p <0.05). The images of all patients were used
for comparing the protocols in terms of image quality. The mean scores for the 80
KV scanning images were 4.18 +/-0.81 and 4.41 +/-0.80 for dose obtained by 120 KV
scanning. The median image quality was 4 (good) for both protocols. The 80 KV
protocol allowed, as well as the 120 KV, a careful analysis by the orthodontist
and the dental surgeon that together, based on this images, can choose the best
line of treatment between several available options.
CONCLUSION: 80 KV protocols compared with 120 KV protocols resulted in reduced
total radiation dose without relevant loss of diagnostic image information and
quality. The images were good enough to obtain information about the exact
position of impacted teeth and to plan the best line of surgical treatment and
mechanotherapy strategy
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