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Biomedical subjects

J F Rockett

Publications and source records attributed to J F Rockett.

17 recordsLinked to original sources
PubMed1991

Scintigraphic manifestation of iliotibial band injury in an endurance athlete.

The scintigraphic appearance of an overuse injury at the insertion of the iliotibial band is described. This injury was depicted on three-phase bone scintigraphy as focally increased radionuclide concentration in the anterolateral tibial condyle (lateral tibial tubercle) where the iliotibial band inserts. Overuse injuries involving the insertion of the iliotibial band are uncommon and are not to be confused with a stress fracture or other bony lesion involving the lateral tibial condyle.

Adult↗
PubMed1990

Intravenous dipyridamole thallium-201 SPECT imaging in patients with left bundle branch block.

Tl-201 exercise imaging in patients with left bundle branch block (LBBB) has proven to be indeterminate for significant left anterior descending (LAD) coronary artery stenosis because of the presence of immediate septal perfusion defects with redistribution on delayed images in almost all cases. Tl-201 redistribution occurs regardless of the presence or absence of LAD stenosis. Nineteen patients having LBBB were evaluated with dipyridamole Tl-201 SPECT. Fourteen of these subjects had normal dipyridamole Tl-201 SPECT imaging. Three patients had normal coronary angiograms. None of the remaining 11 patients with normal dipyridamole Tl-201 SPECT images was found to have clinical coronary artery disease in a 5-11 month follow-up period. Five patients had abnormal septal perfusion. Four underwent coronary angiography. One had a significant LAD stenosis. The single patient with septal redistribution who refused to undergo coronary angiography died shortly thereafter of clinical coronary artery disease. This preliminary work suggests that dipyridamole Tl-201 SPECT may be more useful for excluding LAD stenosis in patients with LBBB than Tl-201 exercise imaging.

Adult↗
PubMed1990

Scintigraphic demonstration of pectineus muscle avulsion injury.

An exercise-related avulsion injury of the insertion of the pectineus muscle is described. The abnormality was detected on a 4-hour delayed bone scan. Symptomatic injuries of the adductor muscles are uncommon and are not to be confused scintigraphically with a stress fracture of the proximal femoral shaft.

Diagnosis, Differential↗
PubMed1990

Intravenous dipyridamole thallium-201 SPECT imaging methodology, applications, and interpretations.

Dipyridamole TI-201 imaging is an ideal alternative to exercise TI-201 scintigraphy in patients who are unwilling or unable to perform maximum exercise stress. The use of intravenous dipyridamole, alone or in combination with exercise, has not been approved for clinical practice by the Food and Drug Administration. Once approval is granted, the test will become a widely used and important component of the cardiac work-up. The indications, methodology, side effects, and utility of dipyridamole cardiac imaging in the clinical setting are discussed and a variety of examples presented.

Coronary Disease↗
PubMed1990

Three-phase radionuclide bone imaging in stress injury of the anterior iliac crest.

Two adolescents with stress-related avulsion injury of the anterior iliac crest apophysis are presented. Increased tracer concentration in the anterior iliac crest area is present on the blood-pool and delayed images. Increased iliac crest activity was demonstrated on the radionuclide angiogram in one patient. Scintigraphic detection of this injury is useful when clinical findings are atypical, if objective evidence of a fracture is required, or when the fracture is not readily apparent radiographically.

Adolescent↗
PubMed1978

Ureteral rupture and bone scintigraphy.

The scintigraphic findings are described of upper ureteral rupture seen incidentally on bone scan in a 30-year-old patient after retrograde pyelography. This case is presented to alert physicians to look for non-osseous abnormalities on the bone scan.

Adult↗
PubMed1976

The radionuclide cerebral angiogram in stroke diagnosis.

The radionuclide cerebral angiogram using intravenous radiopertechnetate has been found to be of value in confirming the early diagnosis of stroke. The isotopic perfusion study is of value in detecting ischemic carotid and middle cerebral lesions. It can also provide a rapid means of demonstrating intracerebral hemorrhages. Nuclear angiography is not recommended for detection of vertebrobasilar artery disease unless a posterior cerebral artery occlusion is suspected.

Adolescent↗