scholarly journals Audit of diagnostic quality of computer monitors used to view digital radiographs

2021 ◽  
Vol 31 (S3) ◽  
pp. 97-99
Keyword(s):  
Diagnostic Quality ◽  
Digital Radiographs ◽  
Computer Monitors

scholarly journals Understanding PI-QUAL for prostate MRI quality: a practical primer for radiologists

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Francesco Giganti ◽  
Alex Kirkham ◽  
Veeru Kasivisvanathan ◽  
Marianthi-Vasiliki Papoutsaki ◽  
Shonit Punwani ◽  
...  
Keyword(s):  
Diffusion Weighted Imaging ◽  
Signal To Noise Ratio ◽  
High Signal ◽  
Diagnostic Quality ◽  
Prostate Mri ◽  
Prostate Imaging ◽  
Dynamic Contrast Enhanced ◽  
Diffusion Weighted ◽  
Contrast Enhanced

AbstractProstate magnetic resonance imaging (MRI) of high diagnostic quality is a key determinant for either detection or exclusion of prostate cancer. Adequate high spatial resolution on T2-weighted imaging, good diffusion-weighted imaging and dynamic contrast-enhanced sequences of high signal-to-noise ratio are the prerequisite for a high-quality MRI study of the prostate. The Prostate Imaging Quality (PI-QUAL) score was created to assess the diagnostic quality of a scan against a set of objective criteria as per Prostate Imaging-Reporting and Data System recommendations, together with criteria obtained from the image. The PI-QUAL score is a 1-to-5 scale where a score of 1 indicates that all MR sequences (T2-weighted imaging, diffusion-weighted imaging and dynamic contrast-enhanced sequences) are below the minimum standard of diagnostic quality, a score of 3 means that the scan is of sufficient diagnostic quality, and a score of 5 implies that all three sequences are of optimal diagnostic quality. The purpose of this educational review is to provide a practical guide to assess the quality of prostate MRI using PI-QUAL and to familiarise the radiologist and all those involved in prostate MRI with this scoring system. A variety of images are also presented to demonstrate the difference between suboptimal and good prostate MR scans.

The application of the MPEG-4 standard to telepathology images for electronic patient records

2003 ◽  
Vol 9 (1_suppl) ◽  
pp. 19-21 ◽  
Author(s):  
Georg A Brox ◽  
Janis L Huston
Keyword(s):  
Image Quality ◽  
Patient Records ◽  
Electronic Patient Records ◽  
Diagnostic Image ◽  
Diagnostic Quality ◽  
Compressed Images ◽  
Software Packages ◽  
Mapping Software ◽  
Pixel Mapping

summary We conducted a pilot study to compare the diagnostic quality of digital telepathology images compressed using two software packages, each of which incorporated the MPEG-4 standard. Both software packages produced lossy (rather than lossless) compressed images. Lossy images can be less reliable for diagnostic purposes and the aim of the study was to examine how the MPEG-4 standard affects image quality. The results showed that manipulation of the images by the software did not dramatically alter the image quality but they highlighted the need to develop both pixel-mapping software and associated standards. Standards will help to determine which bits of a diagnostic image can be safely removed during compression while ensuring the integrity and reliability of images for diagnostic purposes.

Comparison of diagnostic quality of motion picture experts group–2 digital video with super VHS videotape for echocardiographic imaging

2003 ◽  
Vol 16 (8) ◽  
pp. 880-883 ◽  
Author(s):  
Kevin M Harris ◽  
Kevin R Schum ◽  
Thomas Knickelbine ◽  
David G Hurrell ◽  
Jodi L Koehler ◽  
...  
Keyword(s):  
Motion Picture ◽  
Digital Video ◽  
Diagnostic Quality ◽  
Quality Of Motion ◽  
Group 2

scholarly journals Comparative therapeutic use of Risedronate and Calcarea phosphorica - allopathy versus homeopathy - in bone repair in castrated rats

2006 ◽  
Vol 20 (3) ◽  
pp. 196-201 ◽  
Author(s):  
Cristina Werkman ◽  
Giselle Segnini Senra ◽  
Rosilene Fernandes da Rocha ◽  
Adriana Aigotti Haberbeck Brandão
Keyword(s):  
Bone Repair ◽  
Bone Lesion ◽  
Male Rats ◽  
Bone Lesions ◽  
Digital Radiographs ◽  
Defect Area ◽  
Old Rats ◽  
Experimental Treatments ◽  
Made In

Osteoporosis, a disease characterized by progressive bone loss, has been the target of several studies in the past few years. It results in a much higher risk for fractures and might cause slower bone lesion healing. The aim of this work was to study the effects of Risedronate (allopathic medicine) and Calcarea phosphorica 6CH (homeopathic medicine) on the repair of bone lesions in male rats with osteoporosis induced by castration. Eighty-four three-month-old rats were used divided into four groups of twenty-one animals each. Three groups where castrated and one group was submitted to Sham surgery. One month later, cortical lesions were made in all animals' tibiae and, after one day, the different experimental treatments began according to the following groups: CR - castrated/Risedronate (1 mg/kg/day); CCp - castrated/Calcarea phosphorica 6CH (3 drops/day); CP - castrated/placebo and SP - Sham/placebo. The animals were sacrificed at seven, fourteen and twenty-eight days after the beginning of the treatments and had their tibiae removed. Digital radiographs of the tibiae were taken and analyzed in order to evaluate the optical density of the defect area. Then, they were decalcified and processed for histological and histomorphometrical analysis. The data were submitted to ANOVA, and to the Tukey and Dunnett tests (5%). The allopathic and homeopathic treatments led to different bone formation as regards remodeling and maturation aspects. Further research is necessary to access the resistance and quality of the newly formed bone.

The impact on diagnostic quality of using contrast media in PET-CT studies

2010 ◽  
Vol 52 (4) ◽  
pp. 327-332
Author(s):  
M. García García-Esquinas ◽  
A. Ortega Candil ◽  
L. Lapeña Gutierrez ◽  
J. Mucientes Rasilla ◽  
J.L. Carreras Delgado ◽  
...  
Keyword(s):  
Contrast Media ◽  
Diagnostic Quality ◽  
Pet Ct ◽  
The Impact ◽  
Ct Studies
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