Detection of Pericardial Effusion by Radioisotope Heart Scanning

A marked difference between the cardiac silhouette on the six-foot chest roentgenogram and the cardiac blood pool, determined by radioisotope scanning, has been shown to be consistent with pericardial effusion and/or thickening. It has also been observed that the cardiac blood pool is separated from the liver margin by the interposition of pericardial fluid and/or thickening. This separation was not demonstrated in the presence of a normal pericardium. To appreciate these features, 400 μc. of radioiodinated human serum albumin and 50 μc. of colloidal radiogold were used for scanning. The former outlind the blood pool and the latter demonstrated the position of the liver.     

核素骨显像对不明原因骨痛的临床诊断价值

107例不明原因腰腿疼患者均经放射性核素~(99m)TC—MDP全身骨显像。其中100例阳性,阳性率93.5％,67例为单发灶占62.6％,多发病灶33例占30.8％。结果显示对原因不明的骨痛,特别是50岁以上患者,要注意恶性肿瘤所致疼痛的可能,尤其是多发病灶。如与X线片结合分析,对大多数骨痛原因得到确认,具有一定的临床价值。     

The Role of Radioisotope Renal Scanning in the Assessment of Renal Disease

Experience with 500 radio-chlormerodrin renal scans has shown that the technique can detect (1) altered renal function, both focal and generalized, (2) space-occupying kidney lesions, and (3) renal size and disease in some cases in which the blood urea nitrogen is elevated and the excretory urogram inconclusive.

The technique is valuable as an adjunct to the intravenous pyelogram since it may discriminate more disease than was thought to be present or may distinguish between anomalous variations in renal outline and calyceal displacement from parenchymal disease. The technique is completely harmless and there are no known contraindications to the test agent, radio-chlormerodrin.

     

核素肾功能定量指标检测和生化检查在系统性红斑狼疮肾炎中的应用

目的：探讨肾定量指标和生化检查在系统性红斑狼疮肾损害中早期诊断的可行性。方法：通过对28例系统性红斑狼疮患者进行肾显像,并分析GFR和^99mTc-亚锡喷替酸肾图定量指标,同时与血BUN、尿蛋白和β2-m等对照。结果：^99mTc-亚锡喷替酸肾显像定量指标GFR和血肌酐在系统性红斑狼疮肾损害中早期诊断上有显著的作用。结论：对于系统性红斑狼疮肾损害的早期诊断,临床上应以各种生化检查配合^99mTc-亚锡喷替酸肾显像和其定量指标分析。     

Research and Development of a Radioisotope Dose Calibrator with Background Alarm Used in Nuclear Medical Laboratories

In this study, research and development of a prototype background alarm levelled radioisotope dose calibrator for nuclear medical laboratories was emphasized. The aim was to develop a standard performance, economical dose calibrator (self-made) from the ion-chamber to the microcomputer. Dose calibrators are used in nuclear medical laboratories for treatment and diagnosis purposes. The device is developed using an ion chamber filled with 2 atm pressure argon gas, 3N201 dual gate mosfet for the extremely high impedance preamplifier, an Intel 8052AH microcontroller for the microcomputer, ADC0804 for the A/D conversion, a Phillips 2 × 16 character display, and other components. Correction factors are used for each radioisotope after the activity measurements, that can be updated and kept in the Ni–Cd rechargeable battery-powered RAM memory. To provide safety in nuclear medical laboratories, background activity values are measured.