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Biomedical subjects

I Garty

Publications and source records attributed to I Garty.

At least 37 records · Page 2Linked to original sources
PubMed1985

The radionuclide diagnosis, evaluation and follow-up of malignant external otitis (MEO). The value of immediate blood pool scanning.

A patient suffering from malignant external otitis (MEO) underwent early blood pool scanning followed after 2 hours by 99m Tc MDP bone scanning and serial Ga-67 citrate scintigraphies of the skull. The former two procedures served as a diagnostic tool to MEO. The latter was used for estimating the extent of the infective process and for following-up the efficacy of treatment. The complementary role of these three procedures in the diagnosis and follow-up of MEO, with special emphasis on immediate blood pool scanning as part of the diagnostic procedure, is illustrated.

Aged↗
PubMed1985

Nearly total absence of pulmonary perfusion with corresponding technetium-99m MDP and gallium-67 uptake in a patient with mediastinal neuroblastoma.

A case of unilateral nearly total hypoperfusion of the left lung in a 13-month-old girl is presented. The combination of the lung hypoperfusion and accumulation of the Tc-99m MDP and Ga-67 citrate in the same area suggested the preoperative diagnosis of mediastinal neuroblastoma. Explorative thoracotomy revealed the presence of a neuroblastoma compressing the left lung pedicle. The described scintigraphic appearance in the pediatric age group is suggested as typical of mediastinal neuroblastoma. This pathology should be included in the following gamuts in nuclear medicine: unilateral decrease or absent lung perfusion, unilateral diffuse chest uptake of Ga-67 citrate, and unilateral pulmonary uptake in bone scintigraphy.

Female↗
PubMed1985

Idiopathic hypertrophic sub-aortic stenosis (IHSS): a new diagnostic method using ECG-gated thallium-201 myocardial scintigraphy.

A new diagnostic method for idiopathic hypertrophic sub-aortic stenosis (IHSS), using synchronized ECG gated 201Tl myocardial scintigraphy, is described. Twenty patients previously diagnosed as IHSS were evaluated by sequential three-view ECG gated 201Tl and 45 degrees left anterior oblique multigated (MUGA) cardiac blood pool imaging (Group A). The results were compared with two control groups: 20 patients with no previous history of heart disease (Group B), and 20 patients with coronary ischaemic heart disease (Group C). We suggest the following combination of scintigraphic signs as typical and diagnostic to obstructive IHSS: Elevated left ventricular ejection fraction (mean 83.9% +/- 6.15S.D. versus 72.5% +/- 5.35S.D. and 51.2% +/- 13.65S.D. in Groups B and C respectively); Systolic left ventricular cavity obliteration (71% of obstructive IHSS patients versus 0% in Groups B and C); A ratio of more than 1.3:1 in septal to free wall thickness (100% of patients with IHSS); Perfusion/wall-motion mismatch of septum was demonstrated in all (100%) of patients with IHSS (versus 0% in Group B and 10% in Group C). We suggest this last finding as a new specific diagnostic sign for IHSS, with the ability to differentiate between patients with ischaemic coronary heart disease and IHSS patients; whilst both groups may present chest pains, the first group was characterized by 'matching' of perfusion and motion of the affected myocardial wall while the patients with IHSS had 'mismatching' of these parameters. We suggest gated 201Tl myocardial scintigraphy as an additional sensitive tool for the early diagnosis and evaluation of IHSS patients.

Adolescent↗
PubMed1985

Rheumatic carditis presenting as acute myocardial infarction.

Two weeks following streptococcal tonsillitis two patients developed migratory arthralgia, fever and pericarditic chest pain, followed by an episode of severe coronary retrosternal pressure. The ECG during the latter episodes revealed ST elevation in the inferior wall leads, followed later by the appearance of pathological Q waves in the same leads which persisted for only a few days. Radionuclide scans and echocardiographic studies revealed localized involvement of the inferior left ventricle in both cases and, in addition, involvement of the right ventricle in have been suggested to explain the co-occurrence of viral myopericarditis and myocardial infarction (MI)-like picture during acute rheumatic fever can be explained either by coronary vasculitis resulting in myocardial ischemia, or by direct involvement of the myocardium because of an inflammatory process. Both mechanisms have been suggested to explain the co-occurrence of viral myopericarditis and myocardial necrosis. The transient Q waves were probably produced by stunning of the myocytes during the acute phase of the disease. Increased awareness will probably result in detection of similar cases and may contribute to understanding the pathogenesis of the MI-like picture of acute rheumatic fever.

Acute Disease↗
PubMed1984

Frontal and orbital bone infarctions causing periorbital swelling in patients with sickle cell anemia.

Two cases of unilateral and bilateral periorbital hematomas occurred in patients with sickle cell anemia. The cause of periorbital swelling in these cases was found to be orbital and frontal bone infarctions, respectively, diagnosed by technetium Tc 99m medronate bone scintigraphy. To our knowledge, periorbital bone infarction, as a part of the differential diagnosis of periorbital hematoma and as part of the possible ocular manifestations in patients with sickle cell anemia, has not previously been described.

Anemia, Sickle Cell↗
PubMed1984

Study of ECG-gated thallium-201 myocardial scintigraphy: is imaging time a limiting factor?

Twenty patients underwent gated synchronized 201Tl myocardial scanning (TMS). Twelve also performed a rest blood pool multigated acquisition ( MUGA ) study. A 'static' image was obtained by adding all the gated frames of the study. In this way we found the conventional static study quite unnecessary. Comparing the gated TMS to the static one revealed significantly improved resolution in the gated images and additional information concerning wall motion and myocardial thickness. Close agreement was found with results of MUGA studies of the same patients. By the addition of diastolic frames the imaging time needed to obtain improved image quality was found to be not more than 10 min per view. The exclusion of imaging time as a limiting factor for gated TMS is stressed.

Coronary Disease↗
PubMed1984

Pitfalls in the diagnosis of neuroblastoma by 99mTc-MDP scintigraphy: a case report.

A routine bone scan was performed on an infant presenting with abdominal mass. Initially, the stasis of activity in the right ureter, which was compressed by a large abdominal meningocoele, was mistaken for activity in a neuroblastoma. A subsequent kidney scintigram led to the correct interpretation. The misinterpretation of abdominal 99mTc-MDP accumulation can be prevented by the correlation of bone and kidney scintigrams. In this way, the correct site of the radiopharmaceutical concentration can be assessed, and the damage caused by any kind of abdominal mass to the compressed urinary tract and kidney can be assessed.

Abdominal Neoplasms↗
PubMed1984

Bone infarction in children with sickle cell disease: early diagnosis and differentiation from osteomyelitis.

An early differential diagnosis between bone infarction and osteomyelitis in sickle cell patients is practically impossible using routine laboratory methods. Twenty radioisotope studies in sickle cell patients during vaso-occlusive crises, were analyzed. A three stage process can be described. In the first stage a decreased uptake can be demonstrated by Tc 99m methylene diphosphonate (MDP) bone scanning. In osteomyelitis, an increased uptake area is usually seen at this early stage, corresponding to increased uptake in Ga-67 citrate scanning. At the second stage, approximately a week later, normal uptake can be seen. Two to four weeks later an area of increased uptake is recorded that corresponds to the healing process, stage three. We recommend therefore Tc 99m MDP bone scanning in the early stages if clinical signs and symptoms suggest a vaso occlusive crisis or osteomyelitis in a sickle cell patient. This study can be followed by a Ga-67 citrate scintigraphy in doubtful cases. Later studies should be used for the assessment of the healing process. Two illustrative case reports are included.

Anemia, Sickle Cell↗
PubMed1984

The diagnosis and early complications of right ventricular infarction.

Studies of pathology have shown that involvement of the right ventricle (RV) in acute myocardial infarction (AMI) is relatively common. Our experience in the noninvasive diagnosis of RVAMI and its early prognosis is presented. Sixty patients with AMI were prospectively studied: 40 patients with inferior AMI and 20 patients with anterior AMI. The evaluation was made by: (1) CLINICAL FINDINGS: hypotension, congestive heart failure, sinus bradycardia less than 40/min, dysrhythmia, and conduction disturbances; (2) ECG record including precordial lead (V4R); (3) Radioisotope heart scintigraphy: 99mTc-PYP infarct scintigraphy and multigated acquisition MUGA blood pool scanning. Of the 40 patients diagnosed as having inferior AMI, 20 cases (50%) were found to be associated with RVAMI. All of them were diagnosed by positive radionuclide studies, and 17 (85%) also demonstrated a ST segment elevation of 0.1 mV, and pathological Q waves in the V4R lead. The ejection fraction (EF) of RV was found to be significantly decreased in patients with RVAMI compared with the other group (mean, 27% versus 57%). Among the 20 patients with RVAMI, 16 (80%) showed various complications during the hospitalization period, versus 9 patients (45%) from the group with inferior AMI. The most common complication in RVAMI patients was conduction disturbances (7 of 20 versus 2 of 20 patients). The clinical and prognostic importance of the early diagnosis of RVAMI is stressed.

Arrhythmias, Cardiac↗
PubMed1984

Tc-99m colloid lung uptake in a rare case of toxoplasmosis with liver involvement.

Intensive lung accumulation of colloid (Tc-99m phytate) was demonstrated in a child suffering from acquired toxoplasmosis with a rare manifestation of severe liver damage. The possible mechanism and clinical importance of colloid lung concentration in this case is briefly discussed, including a review of the literature on this subject.

Child, Preschool↗
PubMed1984

The noninvasive diagnosis of isolated right ventricular infarction.

A rare case of isolated right ventricular infarction (RVI) is described. The lack of clinical and electrocardiographic findings characteristic of isolated RVI makes this pathology a diagnostic challenge. The role of the radionuclide scintigraphic procedures as a single possible tool for the diagnosis of isolated RVI is emphasized.

Diphosphates↗