Estimation of 99Mo production rates from natural molybdenum in research reactors.

Molybdenum-99 is one of the most important radionuclides for medical diagnostics. In 2015, the International Atomic Energy Agency organized a round-robin exercise where the participants measured and calculated specific saturation activities achievable for the 98Mo(n,γ)99Mo reaction. This reaction is of interest as a means to locally, and on a small scale, produce 99Mo from natural molybdenum. The current paper summarises a set of experimental results and reviews the methodology for calculating the corresponding saturation activities. Activation by epithermal neutrons and also epithermal neutron self-shielding are found to be of high importance in this case.

Providencia rettgeri Prostatic Abscess Cured by Medical Therapy

A prostatic abscess is a rare, but potentially serious disease. The mainstay of treatment for the prostatic abscess is antibiotic administration and drainage. Here, we experienced a 66-year-old man with a prostatic abscess caused by Providencia rettgeri, which has not been reported as a pathogenic agent of a prostatic abscess. He was cured using antibiotics, without surgical drainage. This case suggests that the appropriate selection of patients for antibiotic therapy may provide an excellent prognosis.

A Fatal Case of Vocal Cord Dysfunction: A Case Report / 대한구급학회지

Vocal cord dysfunction is characterized by the paradoxical adduction of the vocal cord during inspiration, causing relapsing wheezing or stridor, chest tightness, shortness of breath, and coughing. If the patient exhibiting symptoms of asthma is not responsive to treatment, there is a need to test whether vocal cord dysfunction is complicated by asthma. Herein, we report a case of vocal cord dysfunction with acute respiratory failure in old age with underlying disease. The patient presented with resting dyspnea, an audible wheeze, and was first diagnosed with acute exacerbation of bronchial asthma. However, her symptoms were not controlled with medical treatment and laryngoscopy showed paradoxical adduction of the vocal cords. Sudden cardiopulmonary arrest occurred after meal on the day of laryngoscopic examination. Although successful cardiopulmonary resuscitation, the patient developed ventilator-associated pneumonia, and multiple organ failure, eventually leading to death. Because the case was fatal, a report is being issued.