The effects of natural ostium and nasoantral window on mucosal regeneration after maxillary sinus surgery in rabbits.

The aims of the study were to investigate the effects of natural ostium and the nasoantral window on the mucosal regeneration after maxillary sinus surgery and to detect the changes in the mucociliary clearance during regeneration process. Twenty-eight rabbits were studied. In the study group consisting of 21 rabbits, the mucosa of each right maxillary sinus was totally removed, natural ostium was occluded with bone-wax and a nasoantral window was created, while the left sinus mucosa was removed and the natural ostium was left open without creating a nasoantral window.

Evaluation of metastatic bone disease with pentavalent 99Tc(m)-dimercaptosuccinic acid: a comparison with whole-body scanning and 4/24 hour quantitation of vertebral lesions.

The aim of this study was to establish the value of 99Tcm(V)-DMSA scintigraphy in the detection of metastatic bone lesions and compare the results to 99Tcm-MDP bone scintigraphy. Thirty-four patients presenting with metastatic bone disease (Group 1) and 12 controls with degenerative skeletal lesions (Group 2) were studied. Conventional bone scanning and 99Tcm(V)-DMSA whole-body scanning were performed on all patients.

Comparison of Tc-99m MDP, Tc-99m HSA and Tc-99m HIG uptake in rheumatoid arthritis and its variants.

Tc-99m polyclonal immunoglobulin-G has been shown to be a successful agent in the depiction of active inflammation in rheumatoid arthritis (RA). The objective of this study was to compare the uptake behaviors of Tc-99m HIG and Tc-99m MDP in RA and variants of rheumatoid arthritis (VRA). Seventeen patients with RA and 8 patients with VRA presenting with active inflammation were included in this study.

Pulmonary Tc-99m tetrofosmin imaging: clinical experience with detecting malignant lesions and monitoring response to therapy.

The authors prospectively investigated the uptake and kinetics of Tc-99m tetrofosmin (Tetro) in benign and malignant lung lesions and the effect of radiotherapy, chemotherapy, or both on Tc-99m Tetro uptake in malignant lung tumors. Dynamic and planar Tetro imaging were performed in 45 patients with pulmonary lesions during a period of 28 months (34 untreated malignant tumors, 11 benign lesions). Tetro uptake was visibly increased in 26 of 34 malignant tumors, with a mean lesion to contralateral normal tissue ratio of 1.

Bilateral pulmonary artery aneurysms in a patient with Behcet syndrome: evaluation with radionuclide angiography and V/Q lung scanning.

The case of a 14-year-old girl with Behcet syndrome is described. Besides painful and recurrent oral ulcerations, the patient had a cough and intermittent hemoptysis. The initial chest roentgenogram revealed bilateral parahilar opacities.

Gastric emptying time in patients with primary hypothyroidism.

Background And Objectives: Symptoms due to slowing of gastrointestinal motility constitute an important problem in most patients with primary hypothyroidism. The purpose of this study was to calculate gastric emptying time in patients with primary hypothyroidism using a radioisotopic method.

Patients And Methods: Fifteen hypothyroid patients (2 male, 13 female) participated in the study.

Transient reverse ventilation-perfusion mismatch in acute pulmonary nitrofurantoin reaction.

A 67-yr-old woman with a history of myocardial infarct was admitted to emergency for marked dyspnea, nonproductive cough, nausea and fever. The thorax X-ray revealed a bilateral alveolar and interstitial infiltration pattern with basal accentuation. The cardiac examinations were normal.

Demonstration of frontal hypoperfusion in benign exertional headache by Technetium-99m-HMPAO SPECT.

We present a case of benign exertional headache (BEH) in a 15-yr-old boy. The patient suffered from exclusively exercise-induced headaches with migraine-like accompanying symptoms. No pathology could be detected by routine cardiovascular or neurological examinations by CT.

Variable kidney position mimicking renal artery branch stenosis in a Tc-99m-DTPA captopril scintigraphy.

Tc-99m-DTPA captopril scintigraphy was performed in a patient with suspected renovascular hypertension. Markedly impaired right renal function (Glomerular filtration rate (GFR) values for the right kidney = 14 ml/min, left kidney = 79 ml/min) was detected in the initial captopril study. Only lower pole activity of the right kidney was observed during the whole study.

Technetium-99m-tetrofosmin uptake in malignant lung tumours.

Technetium-99m-tetrofosmin is a new myocardial imaging agent which has yielded promising results compared to thallium-201. The tumour-seeking properties of the routinely used cardiac radiopharmaceuticals 201TI and 99mTc-methoxyisobutylisonitrile are well known. Here we report the results of a pilot study demonstrating 99mTc-tetrofosmin uptake in malignant lung tumours.

Thallium-201 uptake in myositis ossificans. Potential pitfall in diagnosis.

Myositis ossificans is primarily a disorder of adolescents or adults, whereby an area of muscle mass undergoes progressive ossification. Its radiographic and scintigraphic appearances have been well documented. In this paper, a case of histopathologically demonstrated myositis ossificans in the proximal thigh with unexpected TI-201 accumulation was presented.

Reflex sympathetic dystrophy syndrome secondary to organophosphate intoxication induced neuropathy.

Reflex sympathetic dystrophy or Sudeck's atrophy is a syndrome that can usually be followed by a traumatic insult. This disorder is accompanied by signs and symptoms of vasomotor instability, trophic skin changes, and rapid development of bony demineralization. This report presents a case with reflex sympathetic dystrophy syndrome secondary to organophosphate intoxication induced neuropathy.

The value of Tc-99m Nanocolloid scintigraphy in the evaluation of infected total hip arthroplasties.

The early diagnosis of loosening is very important, since it provides a chance to protect the bone structure by means of a good postrevision outcome. Although the delayed stage of infected loosenings can easily be detected by clinical presentations, significant laboratory data and plain X-rays, diagnosis becomes a problem in the early stage. In this study the value of Tc-99m Nanocolloid (NCol) scintigraphy in the diagnosis of infected loosenings was evaluated in 28 patients with painful total hip arthroplasty and 10 controls without any complaint after total hip arthroplasty, by comparing this method with laboratory data, plain X-rays and 3-phase Tc-99m methylene diphosphonate (MDP) scintigraphy.

Ipsilateral and contralateral testicular blood flows during unilateral testicular torsion by 133Xe clearance technique.

Testicular blood flows during unilateral testicular torsion were measured by Xenon-133 clearance technique. Xenon-133 was injected via the left carotid artery into the heart. Measurements were performed in control and left-sided testicular torsion groups, each consisting of ten rats.

Diuretic renography in children: a non-invasive method for the assessment of upper urinary tract pathologies.

Thirty-eight kidneys from 20 children were studied with diuretic renography and the findings in 32 kidneys were compared with the results obtained using IVP. The diuretic renography findings were consistent with those of the IVP in 72 percent of the patients. The main disparity was the dilated nonobstructed pattern observed in the kidneys with normal IVP's, which is pointed out as being an asset of diuretic renography in revealing the functional status of kidneys.