Effect of a dedicated PI-QUAL curriculum on the assessment of prostate MRI quality.

PURPOSE: The Prostate Imaging Quality (PI-QUAL) score is a metric to evaluate the diagnostic quality of multiparametric magnetic resonance imaging (MRI) of the prostate. This study evaluated the impact of a prostate MRI quality training lecture on the participant's ability to assess prostate MRI image quality. METHODS: Eighteen in-training-radiologists of varying experience in reviewing diagnostic prostate MRI assessed the image quality of ten examinations. Then, they attended a dedicated lecture on MRI quality assessment using the PI-QUAL score. After the lecture, the same participants evaluated the image quality of a new set of ten scans applying the PI-QUAL score. Results were assessed using receiver operating characteristic (ROC) analysis. The reference standard was the PI-QUAL score assessed by a fellowship trained abdominal radiologist with experience in reading prostate MRI. RESULTS: There was a significant improvement in the average area under the curve (AUC) for assessment of prostate MRI image quality from baseline (0.82; [0.576 - 0.888]) to post teaching (1.0; [0.954-1]), with an improvement of 0.18 (p < 0.03). When ROC curves were computed for different cohorts stratified based on year of training, difference ranged from 0.48 for second year residents to 0.32 for fourth year residents (p < 0.001-0.01). For abdominal imaging fellows, the pre-teaching AUC was 0.9 [0.557-1] and post teaching AUC was 1 [0.957-1], a difference of 0.1 (p = 0.20). CONCLUSIONS: A dedicated lecture on PI-QUAL improved the ability of radiologists-in-training to assess prostate MRI image quality, with variable impact depending on year of training.

Fracturas en una mujer con mialgias difusas e hipocaliemias graves / Fractures in a woman with severe diffuse myalgias and hypokalemia

Resumen El déficit en la mineralización ósea caracteriza al raquitismo y a la osteomalacia, las cuales pueden ser secundarias a deficiencias de calcio o de vitamina D principalmente. La osteomalacia genera síntomas inespecíficos e insidiosos, usualmente minimizados, y puede confundirse con otras condiciones médicas. La densitometría ósea no diferencia entre osteoporosis y osteomalacia, por lo cual corresponde al clínico hacer una evaluación juiciosa de los síntomas, factores de riesgo, antecedentes, alteraciones de laboratorio y hallazgos radiológicos para tratar de descartar la presencia aislada o simultánea de osteomalacia. La exclusión de osteomalacia tiene importantes repercusiones terapéuticas y pronósticas. Presentamos el caso de una paciente con osteomalacia con varias fracturas espontáneas, pseudofracturas de Looser-Milkman, deformidades angulares en rodillas, mialgias difusas y antecedente de acidosis tubular renal, hipocaliemias graves y sordera neurosensorial, la cual venía rotulada y tratada erróneamente como osteoporosis. (Acta Med Colomb 2013; 38: 255-257).

Abstract The deficit in bone mineralization characterizes rickets and osteomalacia, which may be secondary to deficiencies of calcium or mainly of vitamin D. Osteomalacia generates unspecific and insidious symptoms, usually minimized , and can be confused with other medical conditions. Bone densitometry does not differentiate between osteoporosis and osteomalacia, so it is up to the clinician to make a wise assessment of symptoms, risk factors, history, laboratory abnormalities and radiographic findings to try to rule out the presence of isolated or simultaneous osteomalacia. The exclusion of osteomalacia has important therapeutic and prognostic implications. We report the case of a patient with osteomalacia with multiple spontaneous fractures, Looser-Milkman pseudo-fractures, angular deformities in knees, diffuse myalgias, and history of renal tubular acidosis, severe hipokalemias and sensorineural deafness, which had been wrongly labeled and treated as osteoporosis. (Acta Med Colomb 2013; 38: 255-257).